Filed Pursuant to Rule 497
File No. 333-193308

PROSPECTUS SUPPLEMENT
(to Prospectus dated March 14, 2014)

3,500,000 Shares

GOLUB CAPITAL BDC, INC.

Common Stock

$18.05 per share

We are an externally managed, closed-end, non-diversified management investment company that has elected to be regulated as a business development company under the Investment Company Act of 1940, as amended. Our investment objective is to generate current income and capital appreciation by investing primarily in senior secured, one stop, second lien and subordinated loans of, and warrants and minority equity securities in, U.S. middle-market companies.

GC Advisors LLC serves as our investment adviser. Golub Capital LLC serves as our administrator. GC Advisors LLC and Golub Capital LLC are affiliated with Golub Capital (as defined herein), a leading lender to middle-market companies that has over $8.0 billion of capital under management.

All of the 3,500,000 shares of common stock offered by this prospectus supplement are being sold by us. Our common stock is traded on The NASDAQ Global Select Market under the symbol “GBDC”. The last reported closing price for our common stock on March 17, 2014 was $18.42 per share. The net asset value of our common stock on December 31, 2013 (the last date prior to the date of this prospectus supplement on which we determined net asset value) was $15.23 per share. The offering price per share of our common stock less any underwriting commissions or discounts will not be less than the net asset value per share of our common stock at the time we make this offering.

Shares of closed-end investment companies, including business development companies, frequently trade at a discount to their net asset value. If our shares trade at a discount to our net asset value, it will likely increase the risk of loss for purchasers in this offering. Investing in our common stock involves a high degree of risk. Before buying any securities, you should read the discussion of the material risks of investing in our common stock, including the risk of leverage, in “Risk Factors” beginning on page 13 of the accompanying prospectus.

This prospectus supplement and the accompanying prospectus contain important information you should know before investing in our common stock. Please read it before you invest and keep it for future reference. We file annual, quarterly and current reports, proxy statements and other information about us with the Securities and Exchange Commission, or the SEC. We maintain a website at http://www.golubcapitalbdc.com and make all of our annual, quarterly and current reports, proxy statements and other publicly filed information available on or through our website. You may also obtain such information, free of charge, and make shareholder inquiries by contacting us at 150 South Wacker Drive, Suite 800, Chicago, Illinois 60606, Attention: Investor Relations, or by calling us collect at (312) 205-5050. The SEC also maintains a website at http://www.sec.gov that contains such information.

We generally invest in securities that have been rated below investment grade by independent rating agencies or that would be rated below investment grade if they were rated. These securities, which may be referred to as “junk,” have predominantly speculative characteristics with respect to the issuer’s capacity to pay interest and repay principal. In addition, many of our debt investments have floating interest rates that reset on a periodic basis and typically do not fully pay down principal prior to maturity, which may increase our risk of losing part or all of our investment.

Neither the SEC nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

		Per Share				Total
Public offering price		$	18.05			$	63,175,000
Sales load (underwriting discounts and commissions)		$	0.55			$	1,925,000
Proceeds to us (before expenses)		$	17.50			$	61,250,000

In addition, the underwriters may purchase up to an additional 525,000 shares of common stock at the public offering price, less the sales load payable by us, within 30 days from the date of this prospectus supplement. If the underwriters exercise this option in full, the total sales load paid by us will be $2,213,750, and total proceeds to us, before expenses, will be $70,437,500.

The underwriters are offering the common stock as set forth in “Underwriting.” Delivery of the common stock will be made on or about March 21, 2014.

Wells Fargo Securities		BofA Merrill Lynch		Morgan Stanley

Keefe, Bruyette & Woods                         A Stifel Company		Raymond James

The date of this prospectus supplement is March 18, 2014.

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ABOUT THIS PROSPECTUS SUPPLEMENT

You should rely only on the information contained in this prospectus supplement and the accompanying prospectus. We have not, and the underwriters have not, authorized any other person to provide you with different information. We are not, and the underwriters are not, making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should assume that the information appearing in this prospectus supplement is accurate only as of the date on the front cover of this prospectus supplement and that the information appearing in the accompanying prospectus is accurate only as of the date on its front cover. Our business, financial condition, results of operations, cash flows and prospects may have changed since that date. We will update these documents to reflect material changes only as required by law. We are offering to sell and seeking offers to buy, securities only in jurisdictions where offers are permitted.

This document is in two parts. The first part is this prospectus supplement, which describes the terms of this offering and also adds to and updates information contained in the accompanying prospectus. The second part is the accompanying prospectus, which gives more general information and disclosure. To the extent the information contained in this prospectus supplement differs from the information contained in the accompanying prospectus, the information in this prospectus supplement will control. You should read this prospectus supplement and the accompanying prospectus together with the additional information described under the headings, “Risk Factors” included in the accompanying prospectus and “Available Information” included in this prospectus supplement before investing in our common stock.

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PROSPECTUS SUPPLEMENT

		Page
PROSPECTUS SUPPLEMENT SUMMARY			S-1
THE OFFERING			S-8
FEES AND EXPENSES			S-10
SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS			S-15
USE OF PROCEEDS			S-16
CAPITALIZATION			S-17
UNDERWRITING			S-18
LEGAL MATTERS			S-25
AVAILABLE INFORMATION			S-25

PROSPECTUS

		Page
PROSPECTUS SUMMARY			1
FEES AND EXPENSES			9
RISK FACTORS			13
SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS			42
USE OF PROCEEDS			43
DISTRIBUTIONS			44
SELECTED CONSOLIDATED FINANCIAL DATA			46
MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION, RESULTS OF OPERATIONS AND CASHFLOWS			48
PRICE RANGE OF COMMON STOCK			82
THE COMPANY			83
PORTFOLIO COMPANIES			94
MANAGEMENT			109
MANAGEMENT AGREEMENTS			118
RELATED PARTY TRANSACTIONS AND CERTAIN RELATIONSHIPS			127
CONTROL PERSONS AND PRINCIPAL STOCKHOLDERS			130
DETERMINATION OF NET ASSET VALUE			132
DIVIDEND REINVESTMENT PLAN			135
MATERIAL U.S. FEDERAL INCOME TAX CONSIDERATIONS			137
DESCRIPTION OF OUR CAPITAL STOCK			144
DESCRIPTION OF OUR PREFERRED STOCK.			149
DESCRIPTION OF OUR SUBSCRIPTION RIGHTS			150
DESCRIPTION OF WARRANTS			152
DESCRIPTION OF OUR DEBT SECURITIES			154
REGULATION			165
CUSTODIAN, TRANSFER AND DIVIDEND PAYING AGENT AND REGISTRAR			172
BROKERAGE ALLOCATION AND OTHER PRACTICES			172
PLAN OF DISTRIBUTION			173
LEGAL MATTERS			175
INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM			175
AVAILABLE INFORMATION			175
INDEX TO CONSOLIDATED FINANCIAL STATEMENTS			F-1

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PROSPECTUS SUPPLEMENT SUMMARY

This summary highlights some of the information in this prospectus supplement and the accompanying prospectus. It is not complete and may not contain all of the information that you may want to consider. You should read the more detailed information set forth under “Risk Factors” included in the accompanying prospectus and the other information included in this prospectus supplement and the accompanying prospectus carefully.

Except as otherwise indicated, the terms:

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On April 13, 2010, we converted from a limited liability company into a corporation. In this conversion, Golub Capital BDC, Inc. succeeded to the business of Golub Capital BDC LLC and its consolidated subsidiary, and the members of Golub Capital BDC LLC became stockholders of Golub Capital BDC, Inc. In this prospectus supplement, we refer to such transactions as the “BDC Conversion.” Prior to the BDC Conversion, Golub Capital BDC LLC held all of the outstanding limited liability company interests in our predecessor, Golub Capital Master Funding LLC, or GCMF.

Golub Capital BDC

We are an externally managed, closed-end, non-diversified management investment company that has elected to be regulated as a business development company under the Investment Company Act of 1940, as amended, or the 1940 Act. In addition, for U.S. federal income tax purposes, we have elected to be treated as a regulated investment company, or RIC, under Subchapter M of the Internal Revenue Code of 1986, as amended, or the Code. We were formed in November 2009 to continue and expand the business of our predecessor, GCMF, which commenced operations in July 2007, to make investments primarily in senior secured, one stop (a loan that combines characteristics of traditional first lien senior secured loans and second lien or subordinated loans), second lien and subordinated (a loan that ranks senior only to a borrower’s equity securities and ranks junior to all of such borrower’s other indebtedness in priority of payment) loans and warrants and minority equity securities of middle-market companies that are, in most cases, sponsored by private equity firms. In this prospectus, the term “middle-market” generally refers to companies having earnings before interest, taxes, depreciation and amortization, or EBITDA, of between $5 million and $50 million annually.

Our investment objective is to generate current income and capital appreciation by investing primarily in senior secured, one stop, second lien and subordinated loans of, and warrants and minority equity securities in, U.S. middle-market companies. We intend to achieve our investment objective by (1) accessing the established loan origination channels developed by Golub Capital, a leading lender to middle-market companies with over $8.0 billion of capital under management, (2) selecting investments within our core middle-market company focus, (3) partnering with experienced private equity firms, or sponsors, in many cases with whom we have invested alongside in the past, (4) implementing the disciplined underwriting standards of Golub Capital and (5) drawing upon the aggregate experience and resources of Golub Capital.

We seek to create a diverse portfolio that includes primarily senior secured, one stop, second lien and subordinated loans and warrants and minority equity securities by primarily investing approximately $5 million to $25 million of capital, on average, in the securities of U.S. middle-market companies. We may also selectively invest more than $25 million in some of our portfolio companies and generally expect that the size of our individual investments will vary proportionately with the size of our capital base.

In the current environment, we continue to focus on senior secured loans and one stop investments given the greater principal protection from the first lien security interest associated with such loans.

We generally invest in securities that have been rated below investment grade by independent rating agencies or that would be rated below investment grade if they were rated. These securities, which may be referred to as “junk,” have predominantly speculative characteristics with respect to the issuer’s capacity to

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pay interest and repay principal. In addition, many of our debt investments have floating interest rates that reset on a periodic basis and typically do not fully pay down principal prior to maturity, which may increase our risk of losing part or all of our investment.

As of December 31, 2013, our portfolio at fair value was comprised of 24.6% senior secured loans, 59.5% one stop loans, 9.4% second lien loans, 0.5% subordinated loans, 3.2% equity and 2.8% of investments in SLF. As of December 31, 2013, we had debt and equity investments in 139 portfolio companies. For the three months ended December 31, 2013, our income producing assets, which represented nearly 100% of our total portfolio, had a weighted average annualized interest income (which excludes income resulting from amortization of fees and discounts) yield of 8.6% and a weighted average annualized investment income (which includes interest income and amortization of fees and discounts) yield of 9.3%.

As of December 31, 2013, SLF had commitments from us and United Insurance of $100.0 million of subordinated notes, of which approximately $32.4 million in aggregate principal amount was funded at December 31, 2013. SLF also has commitments from us and United Insurance of $25.0 million of LLC equity interests, of which approximately $4.7 million was funded as of December 31, 2013. As of December 31, 2013, our investment in SLF consisted of subordinated notes of $28.4 million and LLC equity interests of $4.1 million. As of December 31, 2013, United Insurance’s investment in SLF consisted of subordinated notes of $4.1 million and LLC equity interests of $0.6 million. As of December 31, 2013, we and United Insurance owned 87.5% and 12.5%, respectively, of both the outstanding subordinated notes and LLC equity interests of SLF. Our investment in SLF is not a qualifying asset under Section 55(a) of the 1940 Act. Under the 1940 Act, we may not acquire any non-qualifying asset unless, at the time the acquisition is made, qualifying assets represent at least 70% of our total assets.

Our Adviser

Our investment activities are managed by our investment adviser, GC Advisors. GC Advisors is responsible for sourcing potential investments, conducting research and due diligence on prospective investments and equity sponsors, analyzing investment opportunities, structuring our investments and monitoring our investments and portfolio companies on an ongoing basis. GC Advisors was organized in September 2008 and is a registered investment adviser under the Investment Advisers Act of 1940, as amended, or the Advisers Act. Under our amended and restated investment advisory agreement, or the Investment Advisory Agreement, with GC Advisors, we pay GC Advisors a base management fee and an incentive fee for its services. See “Management Agreements — Investment Advisory Agreement —  Management Fee” in the accompanying prospectus for a discussion of the base management fee and incentive fee, including the cumulative income incentive fee and the income and capital gains incentive fee, payable by us to GC Advisors. Unlike most closed-end funds whose fees are based on assets net of leverage, our base management fee is based on our average-adjusted gross assets (including assets purchased with borrowed funds and securitization-related assets, leverage, unrealized depreciation or appreciation on derivative instruments and cash collateral on deposit with custodian but adjusted to exclude cash and cash equivalents so that investors do not pay the base management fee on such assets) and, therefore, GC Advisors benefits when we incur debt or use leverage. For purposes of the Investment Advisory Agreement, cash equivalents means U.S. government securities and commercial paper instruments maturing within 270 days of purchase (which is different than the definition under U.S. Generally Accepted Accounting Principles, or GAAP, which defines cash equivalents as U.S. government securities and commercial paper instruments maturing within 90 days of purchase). Additionally, under the incentive fee structure, GC Advisors benefits when capital gains are recognized and, because it determines when a holding is sold, GC Advisors controls the timing of the recognition of capital gains. Our board of directors is charged with protecting our interests by monitoring how GC Advisors addresses these and other conflicts of interest associated with its management services and compensation. While not expected to review or approve each borrowing, our independent directors periodically review GC Advisors’ services and fees as well as its portfolio management decisions and portfolio performance. In connection with these reviews, our independent directors consider whether our fees and expenses (including those related to leverage) remain appropriate. See “Management Agreements —  Investment Advisory Agreement — Board Approval of the Investment Advisory Agreement” in the accompanying prospectus.

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GC Advisors is an affiliate of Golub Capital and has entered into a staffing agreement, or the Staffing Agreement, with two Golub Capital affiliates, Golub Capital Incorporated and Golub Capital LLC. Under the Staffing Agreement, these companies make experienced investment professionals available to GC Advisors and provide access to the senior investment personnel of Golub Capital and its affiliates. The Staffing Agreement provides GC Advisors with access to investment opportunities, which we refer to in the aggregate as deal flow, generated by Golub Capital and its affiliates in the ordinary course of their businesses and commits the members of GC Advisors’ investment committee to serve in that capacity. As our investment adviser, GC Advisors is obligated to allocate investment opportunities among us and its other clients fairly and equitably over time in accordance with its allocation policy. See “Conflicts of Interest” below and “Related Party Transactions and Certain Relationships” in the accompanying prospectus. However, there can be no assurance that such opportunities will be allocated to us fairly or equitably in the short-term or over time. GC Advisors seeks to capitalize on the significant deal origination, credit underwriting, due diligence, investment structuring, execution, portfolio management and monitoring experience of Golub Capital’s investment professionals.

An affiliate of GC Advisors, the Administrator, provides the administrative services necessary for us to operate. See “Management Agreements  — Administration Agreement” in the accompanying prospectus for a discussion of the fees and expenses we are required to reimburse to the Administrator.

About Golub Capital

Golub Capital, founded in 1994, is a leading lender to middle-market companies, with a long track record of investing in senior secured, one stop, second lien and subordinated loans. As of December 31, 2013, Golub Capital managed over $6.0 billion of invested or available capital for senior secured, one stop, second lien and subordinated loan investments in middle-market companies. Since its inception, Golub Capital has closed deals with over 150 middle-market sponsors and repeat transactions with over 100 sponsors.

Golub Capital’s middle-market lending group is managed by a four-member senior management team consisting of Lawrence E. Golub, David B. Golub, Andrew H. Steuerman and Gregory W. Cashman. As of December 31, 2013, Golub Capital’s more than 55 investment professionals had an average of over 12 years of investment experience and were supported by more than 100 administrative and back office personnel that focus on operations, finance, legal and compliance, accounting and reporting, marketing, information technology and office management.

Market Trends

We have identified the following trends that may affect our business:

Target Market.  We believe that small and middle-market companies in the United States with annual revenues between $10 million and $2.5 billion represent a significant growth segment of the U.S. economy and often require substantial capital investments to grow. Middle market companies have generated a significant number of investment opportunities for investment funds managed or advised by Golub Capital, and we believe that this market segment will continue to produce significant investment opportunities for us.

Specialized Lending Requirements.  We believe that several factors render many U.S. financial institutions ill-suited to lend to U.S. middle-market companies. For example, based on the experience of our management team, lending to U.S. middle-market companies (1) is generally more labor intensive than lending to larger companies due to the smaller size of each investment and the fragmented nature of information for such companies, (2) requires due diligence and underwriting practices consistent with the demands and economic limitations of the middle market and (3) may also require more extensive ongoing monitoring by the lender.

Demand for Debt Capital.  We believe there is a large pool of uninvested private equity capital for middle-market companies. We expect private equity firms will seek to leverage their investments by combining equity capital with senior secured loans and subordinated debt from other sources, such as us.

Competition from Bank Lenders.  We believe that many traditional bank lenders to middle-market businesses have either exited or de-emphasized their service and product offerings in the middle market. These

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traditional lenders have instead focused on lending and providing other services to large corporate clients. We believe this has resulted in fewer key players and the reduced availability of debt capital to the companies we target.

Market Environment.  We believe that as part of the path of economic recovery following the credit crisis, there has been increased competition for new middle-market investments due to some new non-bank finance companies that have entered the market and due to improving financial performance of middle-market companies. However, we believe that our scale and strong market position will continue to allow us to find investment opportunities with attractive risk-adjusted returns.

Competitive Strengths

Deep, Experienced Management Team.  We are managed by GC Advisors, which, as of December 31, 2013, had access through the Staffing Agreement to the resources and expertise of Golub Capital’s more than 155 employees, led by our chairman, Lawrence E. Golub, and our chief executive officer, David B. Golub. As of December 31, 2013, the more than 55 investment professionals of Golub Capital had an average of over 12 years of investment experience and were supported by more than 100 administrative and back office personnel that focus on operations, finance, legal and compliance, accounting and reporting, marketing, information technology and office management. Golub Capital seeks to hire and retain high-quality investment professionals and reward those personnel based on investor returns. In 2013, Golub Capital was awarded Finance Monthly’s Global Awards 2013 “Credit Asset Manager of the Year” and DealMakers M&A Awards 2013 “Middle Market Lender of the Year.” In 2012, Golub Capital was awarded the Association for Corporate Growth (ACG) New York Champion’s Award for “Senior Lender Firm of the Year” and the M&A Advisor award for “Lender Firm of the Year.” These awards do not constitute an endorsement by such organizations of the securities being offered by this prospectus supplement.

Leading U.S. Debt Platform Provides Access to Proprietary Relationship-Based Deal Flow.  GC Advisors gives us access to the deal flow of Golub Capital, one of the leading middle-market lenders in the United States. Golub Capital has been ranked a “Top 3” Traditional Middle Market Bookrunner every year from 2008 through 2013 by Thomson Reuters LPC for senior secured loans of up to $100 million for leveraged buyouts (based on number of deals completed). Since its inception, Golub Capital has closed deals with over 150 middle-market sponsors and repeat transactions with over 100 sponsors. We believe that Golub Capital receives relationship-based “early looks” and “last looks” at many investment opportunities in the U.S. middle-market market, allowing it to be highly selective in the transactions it pursues.

Disciplined Investment and Underwriting Process.  GC Advisors utilizes the established investment process of Golub Capital for reviewing lending opportunities, structuring transactions and monitoring investments. Using its disciplined approach to lending, GC Advisors seeks to minimize credit losses through effective underwriting, comprehensive due diligence investigations, structuring and the implementation of restrictive debt covenants.

Regimented Credit Monitoring.  Following each investment, GC Advisors implements a regimented credit monitoring system. This careful approach, which involves ongoing review and analysis by teams of professionals, has enabled us to identify problems early and to assist borrowers before they face difficult liquidity constraints.

Concentrated Middle-Market Focus.  Because of our focus on the middle-market, we understand the following general characteristics of middle-market lending:

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Operating and Regulatory Structure

Our investment activities are managed by GC Advisors and supervised by our board of directors, a majority of whom are independent of us, GC Advisors and its affiliates.

As a business development company, we are required to comply with certain regulatory requirements. For example, while we are permitted to finance investments using leverage, which may include the issuance of shares of preferred stock, or notes and other borrowings, our ability to use leverage is limited in significant respects. See “Regulation” in the accompanying prospectus. Any decision on our part to use leverage will depend upon our assessment of the attractiveness of available investment opportunities in relation to the costs and perceived risks of such leverage. GC Advisors makes recommendations to our board of directors with respect to leverage policies. Our board of directors determines our leverage policy, including approving in advance the incurrence of material indebtedness and the execution of material contracts, and directs GC Advisors to implement such policies. The use of leverage to finance investments creates certain risks and potential conflicts of interest. See “Risk Factors — Risks Relating to our Business and Structure — There are significant potential conflicts of interest that could affect our investment returns — Our management and incentive fee structure may create incentives for GC Advisors that are not fully aligned with the interests of our stockholders,” “— Risks Relating to our Business and Structure — Regulations governing our operation as a business development company affect our ability to, and the way in which we, raise additional capital. As a business development company, the necessity of raising additional capital exposes us to risks, including the typical risks associated with leverage” and “— Risks Relating to our Business and Structure — We intend to finance our investments with borrowed money, which will magnify the potential for gain or loss on amounts invested and may increase the risk of investing in us” in the accompanying prospectus.

Also, as a business development company, we are generally prohibited from acquiring assets other than “qualifying assets” unless, after giving effect to any acquisition, at least 70% of our total assets are qualifying assets. Qualifying assets generally include securities of “eligible portfolio companies,” cash, cash equivalents, U.S. government securities and high-quality debt investments maturing in one year or less from the time of investment. Under the rules of the 1940 Act, “eligible portfolio companies” include (1) private domestic operating companies, (2) public domestic operating companies whose securities are not listed on a national securities exchange (e.g., the New York Stock Exchange, NYSE Amex Equities and The NASDAQ Stock Market) or registered under the Securities Exchange Act of 1934, as amended, or the Exchange Act, and (3) public domestic operating companies having a market capitalization of less than $250 million. Public domestic operating companies whose securities are quoted on the over-the-counter bulletin board and through Pink Sheets LLC are not listed on a national securities exchange and therefore are eligible portfolio companies. See “Regulation” in the accompanying prospectus.

Conflicts of Interest

Subject to certain 1940 Act restrictions on co-investments with affiliates, GC Advisors offers us the right to participate in all investment opportunities that it determines are appropriate for us in view of our investment objective, positions, policies, strategies and restrictions as well as regulatory requirements and other relevant factors. Such offers are subject to the exception that, in accordance with GC Advisors’ code of ethics and allocation policies, we might not participate in each individual opportunity but will, on an overall basis, be entitled to participate equitably with other entities sponsored or managed by GC Advisors and its affiliates.

To the extent that we compete with entities sponsored or managed by GC Advisors or its affiliates for a particular investment opportunity, GC Advisors will allocate investment opportunities across the entities for which such opportunities are appropriate, consistent with (1) its internal conflict of interest and allocation policies, (2) the requirements of the Advisers Act and (3) certain restrictions under the 1940 Act regarding co-investments with affiliates. GC Advisors’ allocation policies are intended to ensure that, over time, we may generally share equitably in investment opportunities with other investment funds, accounts or other investment vehicles, together referred to as accounts, sponsored or managed by GC Advisors or its affiliates, particularly those involving a security with limited supply or involving differing classes of securities of the same issuer which may be suitable for us and such other accounts.

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GC Advisors and its affiliates have other clients with similar or competing investment objectives, including several private funds that are pursuing an investment strategy similar to ours, some of which are continuing to seek new capital commitments. In serving these clients, GC Advisors may have obligations to other clients or investors in those entities. Our investment objective may overlap with such affiliated accounts. GC Advisors’ allocation procedures are designed to allocate investment opportunities among the accounts sponsored or managed by GC Advisors and its affiliates in a manner consistent with its obligations under the Advisers Act. If two or more accounts with similar investment strategies are actively investing, GC Advisors will seek to allocate investment opportunities among eligible accounts in a manner that is fair and equitable over time and consistent with its allocation policy. GC Advisors has put in place a conflict-resolution policy that addresses the co-investment restrictions set forth under the 1940 Act. See “Risk Factors — Risks Relating to our Business and Structure — There are significant potential conflicts of interest that could affect our investment returns — Conflicts related to obligations GC Advisors’ investment committee, GC Advisors or its affiliates have to other clients” in the accompanying prospectus.

GC Advisors seeks to ensure the equitable allocation of investment opportunities when we are able to invest alongside other accounts sponsored or managed by GC Advisors and its affiliates. When we invest alongside such other accounts, such investments are made consistent with GC Advisors’ allocation policy. Under this allocation policy, GC Advisors will determine separately a recommended allocation, or Target Allocation, as a percentage of total capital of us and similar eligible accounts and a minimum and maximum investment size for each asset class in which we and similar eligible accounts sponsored or managed by GC Advisors and its affiliates invest. If an investment opportunity is appropriate for us and another similar eligible account, the opportunity will be allocated based on the applicable Target Allocation multiplied by total capital of each of us and such other eligible accounts, subject to minimum and maximum investment size limits. Where there is an insufficient amount of an investment opportunity to fully satisfy us and other accounts sponsored or managed by GC Advisors or its affiliates, the allocation policy further provides that allocations among us and such other accounts will generally be made pro rata to us and each other eligible account based on the total capital allocated to the asset class of the investment and subject to the minimum and maximum investment size limits for each such party. In situations in which co-investment with other entities sponsored or managed by GC Advisors or its affiliates is not permitted or appropriate, such as when, in the absence of exemptive relief described below, we and such other entities would be making different investments in the same issuer, GC Advisors will need to decide whether we or such other entity or entities will proceed with the investment. GC Advisors will make these determinations based on its policies and procedures, which generally require that such opportunities be offered to eligible accounts on a basis that will be fair and equitable over time, including, for example, through random or rotational methods. We and GC Advisors have submitted an exemptive application to the SEC to permit greater flexibility to negotiate the terms of co-investments if our board of directors determines that it would be advantageous for us to co-invest with other accounts sponsored or managed by GC Advisors or its affiliates in a manner consistent with our investment objectives, positions, policies, strategies and restrictions as well as regulatory requirements and other pertinent factors. Our board of directors regularly reviews the allocation policy of Golub Capital and annually reviews the code of ethics of GC Advisors. See “Related Party Transactions and Certain Relationships” in the accompanying prospectus.

Additionally, under our incentive fee structure, GC Advisors benefits when we recognize capital gains and, because GC Advisors determines when a holding is sold, GC Advisors controls the timing of the recognition of such capital gains. See “Risk Factors — Risks Relating to our Business and Structure —  There are significant potential conflicts of interest that could affect our investment returns — Our management and incentive fee structure may create incentives for GC Advisors that are not fully aligned with the interests of our stockholders” in the accompanying prospectus. In addition, because the base management fee that we pay to GC Advisors is based on our average adjusted gross assets, including those assets acquired through the use of leverage, GC Advisors has a financial incentive to incur leverage.

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Our principal executive offices are located at 150 South Wacker Drive, Suite 800, Chicago, Illinois 60606, and our telephone number is (312) 205-5050. Our corporate website is located at www.golubcapitalbdc.com. Information on our website is not incorporated into or a part of this prospectus supplement.

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THE OFFERING

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FEES AND EXPENSES

The following table is intended to assist you in understanding the costs and expenses that an investor in shares of our common stock will bear directly or indirectly. However, we caution you that some of the percentages indicated in the table below are estimates and may vary. Actual costs and expenses incurred by investors in shares of our common stock may be greater than the percentage estimates in the table below. The following table excludes one-time fees payable to third parties not affiliated with GC Advisors that were incurred in connection with the Debt Securitization but includes all of the applicable ongoing fees and expenses of the Debt Securitization. Whenever this prospectus supplement contains a reference to fees or expenses paid by “us” or “Golub Capital BDC,” or that “we” will pay fees or expenses, our common stockholders will indirectly bear such fees or expenses.

Stockholder transaction expenses:
Sales load (as a percentage of offering price)			3.05	%(1)
Offering expenses (as a percentage of offering price)			0.32	%(2)
Dividend reinvestment plan expenses			0.00	%(3)
Total stockholder transaction expenses (as a percentage of offering price)			3.37	%
Annual expenses (as a percentage of net assets attributable to common stock):
Management fees			2.12	%(4)
Incentive fees payable under the Investment Advisory Agreement (20%)			1.68	%(5)
Interest payments on borrowed funds			2.27	%(6)
Other expenses			0.76	%(7)
Acquired fund fees and expenses			0.01	%(8)
Total annual expenses			6.84	%(9)

GC Advisors, as collateral manager for the Securitization Issuer under the collateral management agreement, is entitled to receive an annual fee in an amount equal to 0.35% of the principal balance of the portfolio loans held by the Securitization Issuer at the beginning of the collection period relating to each payment date, which is payable in arrears on each payment date. This fee, which is less than the management fee payable under the Investment Advisory Agreement, is paid directly by the Securitization Issuer to GC Advisors and offset against such management fee. Accordingly, the 1.375% management fee paid by us to GC Advisors under the Investment Advisory Agreement on all of our assets, including those indirectly held through the Securitization Issuer, is reduced, on a dollar-for-dollar basis, by an amount equal to such 0.35% fee paid to GC Advisors by the Securitization Issuer. The term “collection period” refers to a quarterly period running from the day after the end of the prior collection period to the fifth business day of the calendar month in which a payment date occurs. This fee may be waived by the collateral manager. The collateral management agreement does not include any incentive fee payable to GC Advisors.

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For purposes of this table, the SEC requires that the “Management fees” percentage be calculated as a percentage of net assets attributable to common stock, rather than total assets, including assets that have been funded with borrowed monies because common stockholders bear all of this cost. If the base management fee portion of the “Management fees” percentage were calculated instead as a percentage of our total assets, our base management fee portion of the “Management fees” percentage would be approximately 1.21% of total assets. The base management fee in the table above is based on net assets of $721.0 million and leverage of $591.6 million, which reflects our net assets and leverage pro forma as of December 31, 2013 after giving effect to this offering.

We accomplish this limitation by subjecting each quarterly incentive fee payable under the Income and Capital Gain Incentive Fee Calculation (as defined below) to a cap, or the Incentive Fee Cap. The Incentive Fee Cap in any quarter is equal to the difference between (a) 20.0% of Cumulative Pre-Incentive Fee Net Income and (b) cumulative incentive fees of any kind paid to GC Advisors by Golub Capital BDC since April 13, 2010, the effective date of our election to become a business development company. To the extent the Incentive Fee Cap is zero or a negative value in any quarter, no incentive fee would be payable in that quarter. “Cumulative Pre-Incentive Fee Net Income” is equal to the sum of (a) Pre-Incentive Fee Net Investment Income (as defined below) for each period since April 13, 2010 and (b) cumulative aggregate realized capital gains, cumulative aggregate realized capital losses, cumulative aggregate unrealized capital depreciation and cumulative aggregate unrealized capital appreciation since April 13, 2010.

“Pre-Incentive Fee Net Investment Income” means interest income, dividend income and any other income (including any other fees such as commitment, origination, structuring, diligence and consulting fees or other fees that we receive from portfolio companies, but excluding fees for providing managerial assistance) accrued during the calendar quarter, minus operating expenses for the calendar quarter (including the base management fee, taxes, any expenses payable under the Investment Advisory Agreement and an administration agreement, or the Administration Agreement, with the Administrator, any expenses of securitizations and any interest expense and dividends paid on any outstanding preferred stock, but excluding the incentive fee). Pre-Incentive Fee Net Investment Income includes, in the case of investments with a deferred interest feature such as market discount, debt instruments with payment-in-kind, or PIK, interest, preferred stock with PIK dividends and zero coupon securities, accrued income that we have not yet received in cash.

The income and capital gain incentive fee calculation, or the Income and Capital Gain Incentive Fee Calculation, has two parts. The income component is calculated quarterly in arrears based on our Pre-Incentive Fee Net Investment Income for the immediately preceding calendar quarter.

Pre-Incentive Fee Net Investment Income does not include any realized capital gains, realized capital losses or unrealized capital appreciation or depreciation. Because of the structure of the income component, it is possible that an incentive fee may be calculated under this formula with respect to a period in which we have incurred a loss. For example, if we receive Pre-Incentive Fee Net Investment Income in excess of the hurdle rate (as defined below) for a calendar quarter, the income component will result in a positive value and an incentive fee will be paid unless the payment of such incentive fee would cause us to pay incentive fees on a cumulative basis that exceed 20.0% of our Cumulative Pre-Incentive Fee Net Income.

Pre-Incentive Fee Net Investment Income, expressed as a rate of return on the value of our net assets (defined as total assets less indebtedness and before taking into account any incentive fees payable during the period) at the end of the immediately preceding calendar quarter, is compared to a fixed “hurdle rate” of 2.0% quarterly. If market interest rates rise, we may be able to invest our funds in debt instruments that provide for a higher return, which would increase our Pre-Incentive Fee Net Investment Income and make it easier for GC Advisors to surpass the fixed hurdle rate and receive an incentive fee based on such net investment income. Our Pre-Incentive Fee Net Investment Income used to calculate this part of the incentive fee is also included in the amount of our total assets (excluding cash and cash equivalents but including assets purchased with borrowed funds and securitization-related assets, leverage,

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unrealized depreciation or appreciation on derivative instruments and cash collateral on deposit with custodian) used to calculate the 1.375% base management fee.

We calculate the income component of the Income and Capital Gain Incentive Fee Calculation with respect to our Pre-Incentive Fee Net Investment Income quarterly, in arrears, as follows:

The sum of these calculations yields the income incentive fee. This amount is appropriately adjusted for any share issuances or repurchases during the quarter.

The second part of the Income and Capital Gain Incentive Fee Calculation, or the Capital Gain Incentive Fee, equals (a) 20.0% of our Capital Gain Incentive Fee Base (as defined below), if any, calculated in arrears as of the end of each calendar year (or upon termination of the Investment Advisory Agreement, as of the termination date), commencing with the calendar year ending December 31, 2010, less (b) the aggregate amount of any previously paid Capital Gain Incentive Fees. Our “Capital Gain Incentive Fee Base” equals the sum of (1) our realized capital gains, if any, on a cumulative positive basis from April 13, 2010 through the end of each calendar year, (2) all realized capital losses on a cumulative basis and (3) all unrealized capital depreciation on a cumulative basis.

As described above, the incentive fee will not be paid at any time where after such payment the cumulative incentive fees paid to date would be greater than 20.0% of the Cumulative Pre-Incentive Net Income since April 13, 2010. We will accrue the Capital Gain Incentive Fee if, on a cumulative basis, the sum of net realized gains/(losses) plus net unrealized appreciation/(depreciation) is positive. The Capital Gain Incentive Fee is calculated on a cumulative basis from the date we elected to become a business development company through the end of each calendar year. For the year ended September 30, 2013 and the three months ended December 31, 2013, the Capital Gain Incentive Fee was zero. For a more detailed discussion of the calculation of the incentive fee, see “Management Agreements — Investment Advisory Agreement — Management Fee” in the accompanying prospectus.

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Example

The following example demonstrates the projected dollar amount of total cumulative expenses that would be incurred over various periods with respect to a hypothetical investment in our common stock. This example and the expenses in the table above should not be considered a representation of our future expenses, and actual expenses (including the cost of debt, if any, and other expenses) may be greater or less than those shown. These amounts assume (1) a 3.05% sales load (underwriting discounts and commissions), (2) offering expenses totaling 0.32% and (2) total net annual expenses of 5.16% of net assets attributable to common shares as set forth in the table above (other than performance-based incentive fees). Transaction expenses are not included in the following example. For purposes of this table, we have assumed leverage of $591.6 million, which was our actual leverage as of December 31, 2013.

		1 year				3 years				5 years				10 years
You would pay the following expenses on a $1,000 investment, assuming a 5% annual return		$	84			$	183			$	282			$	529

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While the example assumes, as required by the SEC, a 5% annual return, our performance will vary and may result in a return greater or less than 5%. The incentive fee under the Investment Advisory Agreement, which, assuming a 5% annual return, would either not be payable or have an immaterial impact on the expense amounts shown above, is not included in the example. Under our Investment Advisory Agreement, no incentive fee would be payable if we have a 5% annual return. If we achieve sufficient returns on our investments, including through the realization of capital gains, to trigger an incentive fee of a material amount, our expenses, and returns to our investors, would be higher. The example assumes that all dividends and other distributions are reinvested at net asset value. Under certain circumstances, reinvestment of dividends and other distributions under our dividend reinvestment plan may occur at a price per share that differs from net asset value. See “Dividend Reinvestment Plan” in the accompanying prospectus for more information.

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

Some of the statements in this prospectus supplement and the accompanying prospectus constitute forward-looking statements, which relate to future events or our future performance or financial condition. The forward-looking statements contained in this prospectus supplement and the accompanying prospectus involve risks and uncertainties, including statements as to:

Such forward-looking statements may include statements preceded by, followed by or that otherwise include the words “may,” “might,” “will,” “intend,” “should,” “could,” “can,” “would,” “expect,” “believe,” “estimate,” “anticipate,” “predict,” “potential,” “plan” or similar words. The forward-looking statements contained in this prospectus supplement and the accompanying prospectus involve risks and uncertainties. Our actual results could differ materially from those implied or expressed in the forward-looking statements for any reason, including the factors set forth as “Risk Factors” in the accompanying prospectus and elsewhere in this prospectus supplement and the accompanying prospectus.

We have based the forward-looking statements included in this prospectus supplement on information available to us on the date of this prospectus supplement, and we assume no obligation to update any such forward-looking statements. Actual results could differ materially from those anticipated in our forward-looking statements and future results could differ materially from historical performance. Although we undertake no obligation to revise or update any forward-looking statements, whether as a result of new information, future events or otherwise, you are advised to consult any additional disclosures that we may make directly to you or through reports that we have filed or in the future may file with the SEC, including annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K. This prospectus supplement and the accompanying prospectus contain statistics and other data that have been obtained from or compiled from information made available by third-party service providers. We have not independently verified such statistics or data.

You should understand that, under Section 27A(b)(2)(B) of the Securities Act of 1933, as amended, or the Securities Act, and Section 21E(b)(2)(B) of the Exchange Act, the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995 do not apply to forward-looking statements made in connection with any offering of securities pursuant to this prospectus supplement, the accompanying prospectus or in periodic reports we file under the Exchange Act.

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USE OF PROCEEDS

We estimate that net proceeds we will receive from the sale of 3,500,000 shares of our common stock in this offering will be approximately $61.1 million (or approximately $70.2 million if the underwriters fully exercise their option), in each case based on a public offering price of $18.05 per share, after deducting the underwriting discounts and commissions payable by us and estimated offering expenses of approximately $200,000 payable by us.

We intend to use the net proceeds from the sale of our common stock to invest in portfolio companies in accordance with our investment objective and strategies and for general corporate purposes. We expect that our new investments will consist primarily of senior secured, one stop, second lien and subordinated loans. We will also pay operating expenses, including management and administrative fees, and may pay other expenses such as due diligence expenses relating to potential new investments, from the net proceeds of this offering. A portion of the net proceeds from this offering is expected to be utilized to capitalize SBIC V, our SBIC subsidiary, following which we expect SBIC V to issue SBA-guaranteed debentures and make investments in accordance with our investment strategy. A portion of the net proceeds is also expected to be utilized to capitalize SLF. We may also use a portion of the net proceeds from this offering to repay amounts outstanding under our Credit Facility, which bore an annual interest rate of 2.42% (i.e., one-month LIBOR plus 2.25% per annum) on the outstanding balance as of $166.0 million as of December 31, 2013 and matures on October 22, 2018, and our Revolver, which, at the election of Revolver Funding, bears an interest rate of either one-, two-, or three-month LIBOR plus 3.50% per annum or PrivateBank’s prime rate plus 1.50% per annum through November 22, 2014 and either one-, two-, or three-month LIBOR plus 2.50% per annum or PrivateBank’s prime rate plus 0.50% per annum for the period subsequent to November 22, 2014 and matures on November 22, 2019.

We anticipate that we will use substantially all of the net proceeds from this offering for the above purposes within approximately six months after the completion of this offering, depending on the availability of appropriate investment opportunities consistent with our investment objective and market conditions. We cannot assure you that we will achieve our targeted investment pace.

Until such appropriate investment opportunities can be found, we will invest the net proceeds of this offering primarily in cash, cash equivalents, U.S. government securities and high-quality debt investments that mature in one year or less from the date of investment. These temporary investments may have lower yields than our other investments and, accordingly, may result in lower distributions, if any, during such period. Our ability to achieve our investment objective may be limited to the extent that the net proceeds from this offering, pending full investment, are held in lower yielding interest-bearing deposits or other short-term instruments. See “Regulation — Temporary Investments” in the accompanying prospectus for additional information about temporary investments we may make while waiting to make longer-term investments in pursuit of our investment objective.

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CAPITALIZATION

The following table sets forth:

		As of December 31, 2013
		Actual				Pro Forma as Adjusted
		(dollars in thousands)
Assets:
Cash and cash equivalents		$	71,683			$	132,733
Investments at fair value			1,179,919				1,179,919
Other assets			13,225				13,225
Total assets			1,264,827				1,325,877
Liabilities:
Debt			577,200				577,200
Secured borrowings			14,366				14,366
Other liabilities			13,280				13,280
Total liabilities			604,846				604,846
Net assets:
Common stock, par value $0.001 per share; 100,000,000 shares authorized, 43,325,575 shares issued and outstanding; 46,825,575 shares issued and outstanding, pro forma			43				47
Paid in capital in excess of par			653,427				714,473
Capital distributions in excess of net investment income			2,135				2,135
Net unrealized (depreciation) appreciation on investments, derivative instruments and secured borrowings			15,796				15,796
Net realized gains (losses) on investments and derivative instruments			(11,420	)			(11,420	)
Total stockholders’ equity			659,981				721,031
Net asset value per common share		$	15.23			$	15.40

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UNDERWRITING

We are offering the common stock described in this prospectus supplement and the accompanying prospectus through a number of underwriters. Wells Fargo Securities, LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated and Morgan Stanley & Co. LLC are acting as joint book-running managers and representatives of the several underwriters. We have entered into an underwriting agreement with the underwriters. Subject to the terms and conditions of the underwriting agreement, we have agreed to sell to the underwriters, and each underwriter has severally agreed to purchase, at the public offering price less the underwriting discounts and commissions set forth on the cover page of this prospectus supplement, the number of shares of common stock listed next to its name in the following table:

Underwriter		Number of Shares
Wells Fargo Securities, LLC			1,137,500
Merrill Lynch, Pierce, Fenner & Smith          Incorporated			962,500
Morgan Stanley & Co. LLC			962,500
Keefe, Bruyette & Woods, Inc.			262,500
Raymond James & Associates, Inc.			175,000
Total			3,500,000

The underwriters are committed to purchase all of the shares of common stock offered by us if they purchase any common stock. The underwriting agreement also provides that if an underwriter defaults, the purchase commitments of non-defaulting underwriters may also be increased or this offering may be terminated.

Option

The underwriters have an option to buy up to 525,000 additional shares of common stock from us. The underwriters have 30 days from the date of this prospectus supplement to exercise this option. If any shares are purchased with this option, the underwriters will purchase shares in approximately the same proportion as shown in the table above. If any additional shares of common stock are purchased, the underwriters will offer the additional shares on the same terms as those on which the shares are being offered.

The underwriters propose to offer the shares of common stock directly to the public at the public offering price set forth on the cover page of this prospectus supplement and to certain dealers at that price less a concession not in excess of $0.33 per share. After the public offering of the shares, the offering price and other selling terms may be changed by the underwriters. Sales of shares made outside of the United States may be made by affiliates of the underwriters.

Commissions and Discounts

The underwriting fee is equal to the public offering price per share of common stock less the amount paid by the underwriters to us per share of common stock. The underwriting fee is $0.55 per share. The following table shows the per share of common stock and total underwriting discounts and commissions to be paid to the underwriters assuming both no exercise and full exercise of the underwriters’ option to purchase additional shares of our common stock.

		Per Share								Total
		Without Option				With Option				Without Option				With Option
Public offering price		$	18.05			$	18.05			$	63,175,000			$	72,651,250
Sales load (underwriting discounts and commissions)		$	0.55			$	0.55			$	1,925,000			$	2,213,750
Proceeds to us before expenses		$	17.50			$	17.50			$	61,250,000			$	70,437,500

We estimate that the total expenses of this offering, including registration, filing and listing fees, printing fees and legal and accounting expenses, but excluding the underwriting discounts and commissions, will be approximately $200,000, or approximately $0.06 per share excluding the underwriters’ option to purchase

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additional shares of our common stock and approximately $0.05 per share including the underwriters’ option to purchase additional shares of our common stock. All of these offering expenses will be borne indirectly by investors in this offering and, therefore, immediately reduce the net asset value of each investor’s shares. The underwriters will reimburse us for certain other expenses related to this offering.

Lock-Up Agreements

During the period from the date of this prospectus supplement continuing through the date 45 days after the date of this prospectus supplement, we, GC Advisors, the Administrator and our Section 16 officers and directors have agreed with the representatives of the underwriters, subject to certain exceptions, not to:

Moreover, if (1) during the last 17 days of such 45-day restricted period, we issue an earnings release or material news or a material event relating to us occurs or (2) prior to the expiration of such 45-day restricted period, we announce that we will release earnings results or become aware that material news or a material event will occur during the 16-day period beginning on the last day of such 45-day restricted period, the restrictions described above shall continue to apply until the expiration of the 18-day period beginning on the date of issuance of the earnings release or the occurrence of the material news or material event, as the case may be, unless the representatives of the underwriters waive, in writing, such extension.

In addition, during the period from the date of this prospectus supplement continuing through the date 45 days after the date of this prospectus supplement, we have agreed with the representatives of the underwriters not to file or cause the filing of any registration statement under the Securities Act with respect to any common stock or other capital stock or any securities convertible into or exercisable or exchangeable for our capital stock or our common stock.

Price Stabilizations and Short Positions

In connection with this offering, the underwriters may purchase and sell shares of common stock in the open market. These transactions may include short sales, syndicate covering transactions and stabilizing transactions. Short sales involve sales by the underwriters of common stock in excess of the number of securities required to be purchased by the underwriters in the offering, which creates a syndicate short position. “Covered” short sales are sales of securities made in an amount up to the number of securities represented by the underwriters’ option to purchase up to 525,000 additional shares of our common stock. Transactions to close out the covered syndicate short involve either purchases of such securities in the open market after the distribution has been completed or the exercise of the underwriters’ option to purchase additional shares of our common stock. In determining the source of securities to close out the covered syndicate short position, the underwriters may consider the price of securities available for purchase in the open market as compared to the price at which they may purchase securities through the option. The underwriters may also make “naked” short sales, or sales in excess of the option. The underwriters must close out any naked short position by purchasing securities in the open market. A naked short position is more likely to be created if the underwriters are concerned that there may be downward pressure on the price of the securities in the open market after pricing that could adversely affect investors who purchase in this offering. Stabilizing transactions consist of bids for or purchases of securities in the open market while this offering is in progress for the purpose of fixing or maintaining the price of the securities.

The underwriters also may impose a penalty bid. Penalty bids permit the underwriters to reclaim a selling concession from an underwriter or syndicate member when the underwriters repurchase securities originally sold by that underwriter or syndicate member in order to cover syndicate short positions or make stabilizing purchases.

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Any of these activities may have the effect of raising or maintaining the market price of the securities or preventing or retarding a decline in the market price of the securities. As a result, the price of the securities may be higher than the price that might otherwise exist in the open market. The underwriters may conduct these transactions on the NASDAQ Global Select Market or otherwise. Neither we nor any of the underwriters makes any representation or prediction as to the direction or magnitude of any effect that the transactions described above may have on the price of our securities. In addition, neither we nor any of the underwriters makes any representation that the underwriters will engage in these transactions. If the underwriters commence any of these transactions, they may discontinue them at any time.

In connection with this offering, the underwriters may engage in passive market making transactions in our securities on the NASDAQ Global Select Market in accordance with Rule 103 of Regulation M under the Exchange Act during a period before the commencement of offers or sales of securities and extending through the completion of distribution. A passive market maker must display its bid at a price not in excess of the highest independent bid of that security. However, if all independent bids are lowered below the passive market maker’s bid, that bid must then be lowered when specified purchase limits are exceeded.

Sales Outside the United States

No action has been taken in any jurisdiction (except in the United States) that would permit a public offering of our common stock, or the possession, circulation or distribution of this prospectus supplement or accompanying prospectus or any other material relating to us or the common stock in any jurisdiction where action for that purpose is required. Accordingly, our common stock may not be offered or sold, directly or indirectly, and none of this prospectus supplement, the accompanying prospectus or any other offering material or advertisements in connection with our common stock may be distributed or published, in or from any country or jurisdiction except in compliance with any applicable rules and regulations of any such country or jurisdiction.

Each of the underwriters may arrange to sell our common stock offered hereby in certain jurisdictions outside the United States, either directly or through affiliates, where it is permitted to do so. In that regard, Wells Fargo Securities, LLC may arrange to sell shares of our common stock in certain jurisdictions through an affiliate, Wells Fargo Securities International Limited, or WFSIL. WFSIL is a wholly owned indirect subsidiary of Wells Fargo & Company and an affiliate of Wells Fargo Securities, LLC. WFSIL is a U.K. incorporated investment firm regulated by the Financial Services Authority. Wells Fargo Securities is the trade name for certain corporate and investment banking services of Wells Fargo & Company and its affiliates, including Wells Fargo Securities, LLC and WFSIL.

Notice to Prospective Investors in the European Economic Area

In relation to each Member State of the European Economic Area which has implemented the Prospectus Directive, (each, a Relevant Member State), each underwriter has represented and agreed that with effect from and including the date on which the Prospectus Directive is implemented in that Relevant Member State (the Relevant Implementation Date) it has not made and will not make an offer of shares of our common stock to the public in that Relevant Member State prior to the publication of a prospectus in relation to the shares of our common stock which has been approved by the competent authority in that Relevant Member State or, where appropriate, approved in another Relevant Member State and notified to the competent authority in that Relevant Member State, all in accordance with the Prospectus Directive, except that it may, with effect from and including the Relevant Implementation Date, make an offer of shares to the public in that Relevant Member State at any time:

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provided that no such offer of our common stock shall result in a requirement for the publication by us or any underwriter of a prospectus pursuant to Article 3 of the Prospectus Directive.

For the purposes of this provision, the expression an “offer of shares to the public” in relation to any shares in any Relevant Member State means the communication in any form and by any means of sufficient information on the terms of the offer and the shares to be offered so as to enable an investor to decide to purchase or subscribe the shares, as the same may be varied in that Relevant Member State by any measure implementing the Prospectus Directive in that Relevant Member State and the expression Prospectus Directive means Directive 2003/71/EC and includes any relevant implementing measure in each Relevant Member State.

Each underwriter has represented and agreed that:

United Kingdom

In addition, each underwriter: (a) has only communicated or caused to be communicated and will only communicate or cause to be communicated any invitation or inducement to engage in investment activity (within the meaning of Section 21 of the FSMA) received by it in connection with the issue or sale of shares of our common stock in circumstances in which Section 21(1) of the FSMA does not apply to us, and (b) has complied and will comply with all applicable provisions of the FSMA with respect to anything done by it in relation to our common stock in, from or otherwise involving the United Kingdom.

Without limitation to the other restrictions referred to in this prospectus, this prospectus is directed only at (1) persons outside the United Kingdom; (2) persons having professional experience in matters relating to investments who fall within the definition of “investment professionals” in Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005; or (3) high net worth bodies corporate, unincorporated associations and partnerships and trustees of high value trusts as described in Article 49(2) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005. Without limitation to the other restrictions referred to herein, any investment or investment activity to which this prospectus relates is available only to, and will be engaged in only with, such persons, and persons within the United Kingdom who receive this communication (other than persons who fall within (2) or (3) above) should not rely or act upon this communication.

France

The prospectus (including any amendment, supplement or replacement thereto) has not been prepared in connection with the offering of our securities that has been approved by the Autorité des marchés financiers or by the competent authority of another State that is a contracting party to the Agreement on the European Economic Area and notified to the Autorité des marchés financiers; no security has been offered or sold and will be offered or sold, directly or indirectly, to the public in France within the meaning of Article L. 411-1 of the French Code Monétaire et Financier except to permitted investors, or Permitted Investors, consisting of persons licensed to provide the investment service of portfolio management for the account of third parties, qualified investors (investisseurs qualifiés) acting for their own account and/or corporate investors meeting one of the four criteria provided in article D. 341-1 of the French Code Monétaire et Financier and belonging to a limited circle of investors (cercle restreint d’investisseurs) acting for their own account, with “qualified investors” and “limited circle of investors” having the meaning ascribed to them in Article L. 411-2,

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D. 411-1, D. 411-2, D. 734-1, D. 744-1, D. 754-1 and D. 764-1 of the French Code Monétaire et Financier; none of this prospectus or any other materials related to the offer or information contained in this prospectus relating to our common stock has been released, issued or distributed to the public in France except to permitted investors; and the direct or indirect resale to the public in France of any securities acquired by any permitted investors may be made only as provided by articles L. 411-1, L. 411-2, L. 412-1 and L. 621-8 to L. 621-8-3 of the French Code Monétaire et Financier and applicable regulations thereunder.

Hong Kong

Shares of our common stock may not be offered or sold by means of any document other than (i) in circumstances which do not constitute an offer to the public within the meaning of the Companies Ordinance (Cap. 32, Laws of Hong Kong), or (ii) to “professional investors” within the meaning of the Securities and Futures Ordinance (Cap. 571, Laws of Hong Kong) and any rules made thereunder, or (iii) in other circumstances which do not result in the document being a “prospectus” within the meaning of the Companies Ordinance (Cap. 32, Laws of Hong Kong), and no advertisement, invitation or document relating to the shares may be issued or may be in the possession of any person for the purpose of issue (in each case whether in Hong Kong or elsewhere), which is directed at, or the contents of which are likely to be accessed or read by, the public in Hong Kong (except if permitted to do so under the laws of Hong Kong) other than with respect to shares which are or are intended to be disposed of only to persons outside Hong Kong or only to “professional investors” within the meaning of the Securities and Futures Ordinance (Cap. 571, Laws of Hong Kong) and any rules made thereunder.

Singapore

This prospectus has not been registered as a prospectus with the Monetary Authority of Singapore. Accordingly, this prospectus and any other document or material in connection with the offer or sale, or invitation for subscription or purchase, of shares of our common stock may not be circulated or distributed, nor may shares of our common stock be offered or sold, or be made the subject of an invitation for subscription or purchase, whether directly or indirectly, to persons in Singapore other than (i) to an institutional investor under Section 274 of the Securities and Futures Act, Chapter 289 of Singapore, or the SFA, (ii) to a relevant person, or any person pursuant to Section 275(1A) of the SFA, and in accordance with the conditions, specified in Section 275 of the SFA or (iii) otherwise pursuant to, and in accordance with the conditions of, any other applicable provision of the SFA.

Where shares of our common stock are subscribed or purchased under Section 275 of the SFA by a relevant person which is: (a) a corporation (which is not an accredited investor) the sole business of which is to hold investments and the entire share capital of which is owned by one or more individuals, each of whom is an accredited investor; or (b) a trust (where the trustee is not an accredited investor) whose sole purpose is to hold investments and each beneficiary is an accredited investor, shares, debentures and units of shares and debentures of that corporation or the beneficiaries’ rights and interest in that trust shall not be transferable for six months after that corporation or that trust has acquired the shares of our common stock under Section 275 of the SFA except: (1) to an institutional investor under Section 274 of the SFA or to a relevant person, or any person pursuant to Section 275(1A) of the SFA, and in accordance with the conditions, specified in Section 275 of the SFA; (2) where no consideration is given for the transfer; or (3) by operation of law.

Japan

Our common stock has not been and will not be registered under the Securities and Exchange Law of Japan, or the Securities and Exchange Law, and each underwriter has agreed that it will not offer or sell any shares of our common stock, directly or indirectly, in Japan or to, or for the benefit of, any resident of Japan (which term as used herein means any person resident in Japan, including any corporation or other entity organized under the laws of Japan), or to others for re-offering or resale, directly or indirectly, in Japan or to a resident of Japan, except pursuant to an exemption from the registration requirements of, and otherwise in compliance with, the Securities and Exchange Law and any other applicable laws, regulations and ministerial guidelines of Japan.

Notice to Prospective Investors in Switzerland

This document as well as any other material relating to the shares of our common stock which are the subject of the offering contemplated by this prospectus do not constitute an issue prospectus pursuant to

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Article 652a of the Swiss Code of Obligations. Our common stock will not be listed on the SWX Swiss Exchange and, therefore, the documents relating to our common stock, including, but not limited to, this document, do not claim to comply with the disclosure standards of the listing rules of SWX Swiss Exchange and corresponding prospectus schemes annexed to the listing rules of the SWX Swiss Exchange.

Our common stock is being offered in Switzerland by way of a private placement, i.e. to a small number of selected investors only, without any public offer and only to investors who do not purchase shares of our common stock with the intention to distribute them to the public. The investors will be individually approached by us from time to time.

This document as well as any other material relating to our common stock is personal and confidential and does not constitute an offer to any other person. This document may only be used by those investors to whom it has been handed out in connection with the offering described herein and may neither directly nor indirectly be distributed or made available to other persons without our express consent. It may not be used in connection with any other offer and shall in particular not be copied and/or distributed to the public in (or from) Switzerland.

Notice to Prospective Investors in the Dubai International Financial Centre

This document relates to an exempt offer in accordance with the Offered Securities Rules of the Dubai Financial Services Authority. This document is intended for distribution only to persons of a type specified in those rules. It must not be delivered to, or relied on by, any other person. The Dubai Financial Services Authority has no responsibility for reviewing or verifying any documents in connection with exempt offers. The Dubai Financial Services Authority has not approved this document nor taken steps to verify the information set out in it, and has no responsibility for it. The shares of our common stock which are the subject of the offering contemplated by this prospectus may be illiquid and/or subject to restrictions on their resale. Prospective purchasers of the shares of our common stock offered should conduct their own due diligence on our common stock. If you do not understand the contents of this document you should consult an authorized financial adviser.

Electronic Delivery

The underwriters may make this prospectus supplement and accompanying prospectus available in an electronic format. The prospectus supplement and accompanying prospectus in electronic format may be made available on a website maintained by any of the underwriters, and the underwriters may distribute such documents electronically. The underwriters may agree with us to allocate a limited number of securities for sale to their online brokerage customers. Any such allocation for online distributions will be made by the underwriters on the same basis as other allocations.

We estimate that our share of the total expenses of this offering, excluding underwriting discounts and commissions, will be approximately $200,000.

We, GC Advisors and the Administrator have agreed to indemnify the several underwriters against certain liabilities, including liabilities under the Securities Act.

Additional Relationships

Certain of the underwriters and their respective affiliates have from time to time performed and may in the future perform various commercial banking, financial advisory and investment banking services for us and our affiliates for which they have received or will receive customary compensation. Wells Fargo Securities, LLC acts as sales agents and/or principals under an “At the Market” program. In addition, Wells Fargo Securities, LLC, Morgan Stanley & Co. LLC and affiliates of Keefe, Bruyette & Woods, Inc. acted as underwriters in our initial public offering, which was completed in April 2010 and/or our subsequent public offerings, which were completed in April 2011, February 2012, October 2012, January 2013, May 2013 and September 2013, and received customary underwriting discounts and commissions. Wells Fargo Securities, LLC also served as initial purchaser for the Class A Notes and the Class B Notes sold in the Debt Securitization and the amendment to the Debt Securitization for which it received structuring and placement fees of $1.74 million and $0.75 million, respectively, with respect to the Class A Notes and a structuring fee of $50,000 and $0, respectively, with respect to the Class B Notes. Additionally, on July 21, 2011, Funding,

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our wholly owned subsidiary, entered into the Credit Facility with Wells Fargo Securities, LLC, as administrative agent, and Wells Fargo Bank, N.A., as lender, collateral agent, account bank and collateral custodian. The Credit Facility was most recently amended on October 31, 2013. We may use a portion of the net proceeds from this offering to repay amounts outstanding under the Credit Facility, and Wells Fargo Securities, LLC and its affiliates may receive a part of such proceeds by reason of repayment of certain amounts outstanding under the Credit Facility. On June 5, 2013, Wells Fargo Bank, N.A. entered into a custodial agreement with Senior Loan Fund to act as custodian for assets of Senior Loan Fund. Golub Capital Employee Grant Program Rabbi Trust, a trust organized for the purpose of awarding equity incentive compensation to employees of Golub Capital, purchased an aggregate of $3.0 million, $3.1 million, $1.0 million and $1.2 million of shares in our October 2012, February 2012, January 2013 and September 2013 offerings at a price per share of $15.58, $15.35, $15.87 and $16.95, respectively, and, during our fiscal year ended September 30, 2012, invested $3.2 million through open market purchases. An affiliate of Wells Fargo Securities, LLC serves as trustee of Golub Capital Employee Grant Program Rabbi Trust and receives customary fees in connection with its role as trustee. On January 17, 2014, Senior Loan Fund II LLC, or SLF II, a wholly owned subsidiary of SLF, entered into a senior secured revolving credit facility with Wells Fargo Securities, LLC, as administrative agent, and Wells Fargo Bank, N.A., as lender, which allows SLF II to borrow up to $50.0 million at any one time outstanding.

In addition the underwriters or their affiliates may execute transactions with or on behalf of Golub Capital. The underwriters or their affiliates may act as arrangers, underwriters or placement agents for companies whose securities are sold to Golub Capital. The underwriters or their affiliates may also trade in our securities, securities of our portfolio companies or other financial instruments related thereto for their own accounts or for the account of others and may extend loans or financing directly or through derivative transactions to Golub Capital or any of the portfolio companies.

We may purchase securities of third parties from the underwriters or their affiliates after the offering. However, we have not entered into any agreement or arrangement regarding the acquisition of any such securities, and we may not purchase any such securities. We would only purchase any such securities if, among other things, we identified securities that satisfied our investment needs and completed our due diligence review of such securities.

After the date of this prospectus supplement, the underwriters and their affiliates may from time to time obtain information regarding specific portfolio companies or us that may not be available to the general public. Any such information is obtained by the underwriters and their affiliates in the ordinary course of its business and not in connection with the offering of the common stock. In addition, after the offering period for the sale of our common stock, the underwriters or their affiliates may develop analyses or opinions related to Golub Capital or our portfolio companies and buy or sell interests in one or more of our portfolio companies on behalf of their proprietary or client accounts and may engage in competitive activities. There is no obligation on behalf of these parties to disclose their respective analyses, opinions or purchase and sale activities regarding any portfolio company or regarding Golub Capital to our stockholders.

The principal business addresses of the underwriters are: Wells Fargo Securities, LLC, 550 South Tryon Street, Charlotte, North Carolina 28288; Merrill Lynch, Pierce, Fenner & Smith Incorporated, One Bryant Park, New York, New York 10036; and Morgan Stanley & Co. LLC, 1585 Broadway, New York, New York 10036.

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LEGAL MATTERS

Certain legal matters regarding the securities offered by this prospectus supplement will be passed upon for us by Dechert LLP, Washington, D.C. Dechert LLP has from time to time represented GC Advisors and the underwriters on unrelated matters. Certain legal matters in connection with the securities offered hereby will be passed upon for the underwriters by Clifford Chance US LLP, New York, New York.

AVAILABLE INFORMATION

We have filed with the SEC a registration statement on Form N-2, together with all amendments and related exhibits, under the Securities Act, with respect to our shares of common stock offered by this prospectus supplement and the accompanying prospectus. The registration statement contains additional information about us and our shares of common stock being offered by this prospectus supplement and the accompanying prospectus.

We file with or submit to the SEC annual, quarterly and current reports, proxy statements and other information meeting the informational requirements of the Exchange Act. You may inspect and copy these reports, proxy statements and other information, as well as the registration statement and related exhibits and schedules, at the SEC’s Public Reference Room at 100 F Street, NE, Washington, D.C. 20549-0102. You may obtain information on the operation of the Public Reference Room by calling the SEC at (202) 551-8090. We maintain a website at www.golubcapitalbdc.com and make all of our annual, quarterly and current reports, proxy statements and other publicly filed information available, free of charge, on or through our website. Information contained on our website is not incorporated into this prospectus supplement and the accompanying prospectus, and you should not consider information on our website to be part of this prospectus supplement and the accompanying prospectus. You may also obtain such information by contacting us in writing at 150 South Wacker Drive, Suite 800, Chicago, IL 60606, Attention: Investor Relations. The SEC maintains a website that contains reports, proxy statements and other information we file with the SEC at www.sec.gov. Copies of these reports, proxy statements and other information may also be obtained, after paying a duplicating fee, by electronic request at the following e-mail address: publicinfo@sec.gov, or by writing the SEC’s Public Reference Section, 100 F Street, N.E., Washington, D.C. 20549-0102.

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$1,000,000,000

GOLUB CAPITAL BDC, INC.

Common Stock

Preferred Stock

Warrants

Subscription Rights

Debt Securities

We are an externally managed, closed-end, non-diversified management investment company that has elected to be regulated as a business development company under the Investment Company Act of 1940, as amended. Our investment objective is to generate current income and capital appreciation by investing primarily in senior secured, one stop, second lien and subordinated loans of, and warrants and minority equity securities in, U.S. middle-market companies.

GC Advisors LLC serves as our investment adviser. Golub Capital LLC serves as our administrator. GC Advisors LLC and Golub Capital LLC are affiliated with Golub Capital (as defined herein), a leading lender to middle-market companies that has over $8.0 billion of capital under management.

We may offer, from time to time, in one or more offerings or series, together or separately, up to $1,000,000,000 of our common stock, preferred stock, warrants representing rights to purchase shares of our common stock, preferred stock or debt securities, subscription rights or debt securities, which we refer to, collectively, as the “securities.” We may sell our common stock through underwriters or dealers, “at-the-market” to or through a market maker into an existing trading market or otherwise directly to one or more purchasers or through agents or through a combination of methods of sale. The identities of such underwriters, dealers, market makers or agents, as the case may be, will be described in one or more supplements to this prospectus. The securities may be offered at prices and on terms to be described in one or more supplements to this prospectus. In the event we offer common stock, the offering price per share of our common stock exclusive of any underwriting commissions or discounts will not be less than the net asset value per share of our common stock at the time we make the offering except (1) in connection with a rights offering to our existing stockholders, (2) with the consent of the majority of our common stockholders and approval of our board of directors or (3) under such circumstances as the Securities and Exchange Commission, or the SEC, may permit. See “Risk Factors” for more information.

Our common stock is traded on The NASDAQ Global Select Market under the symbol “GBDC”. The last reported closing price for our common stock on February 18, 2014 was $18.96 per share. The net asset value of our common stock on December 31, 2013 (the last date prior to the date of this prospectus on which we determined net asset value) was $15.23 per share.

Shares of closed-end investment companies, including business development companies, frequently trade at a discount to their net asset value. If our shares trade at a discount to our net asset value, it will likely increase the risk of loss for purchasers in this offering. Investing in our securities involves a high degree of risk. Before buying any securities, you should read the discussion of the material risks of investing in our securities, including the risk of leverage, in “Risk Factors” beginning on page 13 of this prospectus.

This prospectus contains important information you should know before investing in our securities. Please read it before you invest and keep it for future reference. We file annual, quarterly and current reports, proxy statements and other information about us with the SEC. We maintain a website at http://www.golubcapitalbdc.com and make all of our annual, quarterly and current reports, proxy statements and other publicly filed information available on or through our website. You may also obtain such information, free of charge, and make shareholder inquiries by contacting us at 150 South Wacker Drive, Suite 800, Chicago, Illinois 60606, Attention: Investor Relations, or by calling us collect at (312) 205-5050. The SEC also maintains a website at http://www.sec.gov that contains such information.

We generally invest in securities that have been rated below investment grade by independent rating agencies or that would be rated below investment grade if they were rated. These securities, which may be referred to as “junk,” have predominantly speculative characteristics with respect to the issuer’s capacity to pay interest and repay principal. In addition, many of our debt investments have floating interest rates that reset on a periodic basis and typically do not fully pay down principal prior to maturity, which may increase our risk of losing part or all of our investment.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

This prospectus may not be used to consummate sales of securities unless accompanied by a prospectus supplement.

The date of this prospectus is March 14, 2014.

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You should rely only on the information contained in this prospectus. We have not, and the underwriters have not, authorized any other person to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. We are not, and the underwriters are not, making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should assume that the information appearing in this prospectus is accurate only as of the date on the front cover of this prospectus. Our business, financial condition, results of operations, cash flows and prospects may have changed since that date. We will update these documents to reflect material changes only as required by law.

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PROSPECTUS SUMMARY			1
FEES AND EXPENSES			9
RISK FACTORS			13
SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS			42
USE OF PROCEEDS			43
DISTRIBUTIONS			44
SELECTED CONSOLIDATED FINANCIAL DATA			46
MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION, RESULTS OF OPERATIONS AND CASH FLOWS			48
PRICE RANGE OF COMMON STOCK			82
THE COMPANY			83
PORTFOLIO COMPANIES			94
MANAGEMENT			109
MANAGEMENT AGREEMENTS			118
RELATED PARTY TRANSACTIONS AND CERTAIN RELATIONSHIPS			127
CONTROL PERSONS AND PRINCIPAL STOCKHOLDERS			130
DETERMINATION OF NET ASSET VALUE			132
DIVIDEND REINVESTMENT PLAN			135
MATERIAL U.S. FEDERAL INCOME TAX CONSIDERATIONS			137
DESCRIPTION OF OUR CAPITAL STOCK			144
DESCRIPTION OF OUR PREFERRED STOCK			149
DESCRIPTION OF OUR SUBSCRIPTION RIGHTS			150
DESCRIPTION OF WARRANTS			152
DESCRIPTION OF OUR DEBT SECURITIES			154
REGULATION			165
CUSTODIAN, TRANSFER AND DIVIDEND PAYING AGENT AND REGISTRAR			172
BROKERAGE ALLOCATION AND OTHER PRACTICES			172
PLAN OF DISTRIBUTION			173
LEGAL MATTERS			175
INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM			175
AVAILABLE INFORMATION			175
INDEX TO CONSOLIDATED FINANCIAL STATEMENTS			F-1

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ABOUT THIS PROSPECTUS

This prospectus is part of a registration statement that we have filed with the SEC using the “shelf” registration process. Under the shelf registration process, we may offer from time to time up to $1,000,000,000 of our common stock, preferred stock, warrants representing rights to purchase shares of our common stock, preferred stock or debt securities, subscription rights or debt securities on the terms to be determined at the time of the offering. We may sell our common stock through underwriters or dealers, “at-the-market” to or through a market maker, into an existing trading market or otherwise directly to one or more purchasers or through agents or through a combination of methods of sale. The identities of such underwriters, dealers, market makers or agents, as the case may be, will be described in one or more supplements to this prospectus. The securities may be offered at prices and on terms described in one or more supplements to this prospectus. This prospectus provides you with a general description of the securities that we may offer. Each time we use this prospectus to offer securities, we will provide a prospectus supplement that will contain specific information about the terms of that offering. The prospectus supplement may also add, update or change information contained in this prospectus, and the prospectus and prospectus supplement will together serve as the prospectus. Please carefully read this prospectus and any prospectus supplement, together with any exhibits, before you make an investment decision. Any exhibits will nonetheless be summarized in the prospectus or applicable prospectus supplement.

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PROSPECTUS SUMMARY

This summary highlights some of the information in this prospectus. It is not complete and may not contain all of the information that you may want to consider. You should read the more detailed information set forth under “Risk Factors” and the other information included in this prospectus carefully.

Except as otherwise indicated, the terms:

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On April 13, 2010, we converted from a limited liability company into a corporation. In this conversion, Golub Capital BDC, Inc. succeeded to the business of Golub Capital BDC LLC and its consolidated subsidiary, and the members of Golub Capital BDC LLC became stockholders of Golub Capital BDC, Inc. In this prospectus, we refer to such transactions as the “BDC Conversion.” Prior to the BDC Conversion, Golub Capital BDC LLC held all of the outstanding limited liability company interests in our predecessor, Golub Capital Master Funding LLC, or GCMF.

Golub Capital BDC

We are an externally managed, closed-end, non-diversified management investment company that has elected to be regulated as a business development company under the Investment Company Act of 1940, as amended, or the 1940 Act. In addition, for U.S. federal income tax purposes, we have elected to be treated as a regulated investment company, or RIC, under Subchapter M of the Internal Revenue Code of 1986, as amended, or the Code. We were formed in November 2009 to continue and expand the business of our predecessor, GCMF, which commenced operations in July 2007, to make investments primarily in senior secured, one stop (a loan that combines characteristics of traditional first lien senior secured loans and second lien or subordinated loans), second lien and subordinated (a loan that ranks senior only to a borrower’s equity securities and ranks junior to all of such borrower’s other indebtedness in priority of payment) loans and warrants and minority equity securities of middle-market companies that are, in most cases, sponsored by private equity firms. In this prospectus, the term “middle-market” generally refers to companies having earnings before interest, taxes, depreciation and amortization, or EBITDA, of between $5 million and $50 million annually.

Our investment objective is to generate current income and capital appreciation by investing primarily in senior secured, one stop, second lien, subordinated loans of, and warrants and minority equity securities in, U.S. middle-market companies. We intend to achieve our investment objective by (1) accessing the established loan origination channels developed by Golub Capital, a leading lender to middle-market companies with over $8.0 billion of capital under management, (2) selecting investments within our core middle-market company focus, (3) partnering with experienced private equity firms, or sponsors, in many cases with whom we have invested alongside in the past, (4) implementing the disciplined underwriting standards of Golub Capital and (5) drawing upon the aggregate experience and resources of Golub Capital.

We seek to create a diverse portfolio that includes primarily senior secured, one stop, second lien and subordinated loans and warrants and minority equity securities by primarily investing approximately $5 million to $25 million of capital, on average, in the securities of U.S. middle-market companies. We may also selectively invest more than $25 million in some of our portfolio companies and generally expect that the size of our individual investments will vary proportionately with the size of our capital base.

In the current environment, we continue to focus on senior secured loans and one stop investments given the greater principal protection from the first lien security interest associated with such loans.

We generally invest in securities that have been rated below investment grade by independent rating agencies or that would be rated below investment grade if they were rated. These securities, which may be referred to as “junk,” have predominantly speculative characteristics with respect to the issuer’s capacity to pay interest and repay principal. In addition, many of our debt investments have floating interest rates that reset on a periodic basis and typically do not fully pay down principal prior to maturity, which may increase our risk of losing part or all of our investment.

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As of December 31, 2013, our portfolio at fair value was comprised of 24.6% senior secured loans, 59.5% one stop loans, 9.4% second lien loans, 0.5% subordinated loans, 3.2% equity and 2.8% of investments in SLF. As of September 30, 2013, our portfolio at fair value was comprised of 28.9% senior secured loans, 54.1% one stop loans, 11.0% second lien loans, 2.2% subordinated loans, 3.3% equity and 0.5% of investments in SLF. As of September 30, 2012, our portfolio at fair value was comprised of 40.7% senior secured loans, 39.5% one stop loans, 6.6% second lien loans, 10.0% subordinated loans and 3.2% equity.

As of December 31, 2013, September 30, 2013 and September 30, 2012, we had debt and equity investments in 139, 135 and 121 portfolio companies, respectively. For the three months ended December 31, 2013 and for the years ended September 30, 2013 and 2012, our income producing assets, which represented nearly 100% of our total portfolio, had a weighted average annualized interest income (which excludes income resulting from amortization of fees and discounts) yield of 8.6%, 9.1%, and 9.3%, respectively, and a weighted average annualized investment income (which includes interest income and amortization of fees and discounts) yield of 9.3%, 10.1%, and 10.2%, respectively.

As of December 31, 2013, SLF had commitments from us and United Insurance of $100.0 million of subordinated notes, of which approximately $32.4 million and $4.7 million in aggregate principal amount was funded at December 31, 2013 and September 30, 2013, respectively. As of December 31, 2013 and September 30, 2013, our investment in SLF consisted of subordinated notes of $28.4 million and $4.1 million, respectively, and LLC equity interests of $4.1 million and $0.6 million, respectively. As of December 31, 2013 and September 30, 2013, United Insurance’s investment in SLF consisted of subordinated notes of $4.1 million and $0.6 million, respectively, and LLC equity interests of $0.6 million and $0.1 million, respectively. As of December 31, 2013, we and United Insurance owned 87.5% and 12.5%, respectively, of both the outstanding subordinated notes and LLC equity interests of SLF.

Our Adviser

Our investment activities are managed by our investment adviser, GC Advisors. GC Advisors is responsible for sourcing potential investments, conducting research and due diligence on prospective investments and equity sponsors, analyzing investment opportunities, structuring our investments and monitoring our investments and portfolio companies on an ongoing basis. GC Advisors was organized in September 2008 and is a registered investment adviser under the Investment Advisers Act of 1940, as amended, or the Advisers Act. Under our amended and restated investment advisory agreement, or the Investment Advisory Agreement, with GC Advisors, we pay GC Advisors a base management fee and an incentive fee for its services. See “Management Agreements — Investment Advisory Agreement — Management Fee” for a discussion of the base management fee and incentive fee, including the cumulative income incentive fee and the income and capital gains incentive fee, payable by us to GC Advisors. Unlike most closed-end funds whose fees are based on assets net of leverage, our base management fee is based on our average-adjusted gross assets (including assets purchased with borrowed funds and securitization-related assets, leverage, unrealized depreciation or appreciation on derivative instruments and cash collateral on deposit with custodian but adjusted to exclude cash and cash equivalents so that investors do not pay the base management fee on such assets) and, therefore, GC Advisors benefits when we incur debt or use leverage. For purposes of the Investment Advisory Agreement, cash equivalents means U.S. government securities and commercial paper instruments maturing within 270 days of purchase (which is different than the definition under U.S. Generally Accepted Accounting Principles, or GAAP, which defines cash equivalents as U.S. government securities and commercial paper instruments maturing within 90 days of purchase). Additionally, under the incentive fee structure, GC Advisors benefits when capital gains are recognized and, because it determines when a holding is sold, GC Advisors controls the timing of the recognition of capital gains. Our board of directors is charged with protecting our interests by monitoring how GC Advisors addresses these and other conflicts of interest associated with its management services and compensation. While not expected to review or approve each borrowing, our independent directors periodically review GC Advisors’ services and fees as well as its portfolio management decisions and portfolio performance. In connection with these reviews, our independent directors consider whether our fees and expenses (including those related to leverage) remain appropriate. See “Management Agreements — Investment Advisory Agreement — Board Approval of the Investment Advisory Agreement.”

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GC Advisors is an affiliate of Golub Capital and has entered into a staffing agreement, or the Staffing Agreement, with two Golub Capital affiliates, Golub Capital Incorporated and Golub Capital LLC. Under the Staffing Agreement, these companies make experienced investment professionals available to GC Advisors and provide access to the senior investment personnel of Golub Capital and its affiliates. The Staffing Agreement provides GC Advisors with access to investment opportunities, which we refer to in the aggregate as deal flow, generated by Golub Capital and its affiliates in the ordinary course of their businesses and commits the members of GC Advisors’ investment committee to serve in that capacity. As our investment adviser, GC Advisors is obligated to allocate investment opportunities among us and its other clients fairly and equitably over time in accordance with its allocation policy. See “Conflicts of Interest” below and “Related Party Transactions and Certain Relationships.” However, there can be no assurance that such opportunities will be allocated to us fairly or equitably in the short-term or over time. GC Advisors seeks to capitalize on the significant deal origination, credit underwriting, due diligence, investment structuring, execution, portfolio management and monitoring experience of Golub Capital’s investment professionals.

An affiliate of GC Advisors, the Administrator, provides the administrative services necessary for us to operate. See “Management Agreements — Administration Agreement” for a discussion of the fees and expenses we are required to reimburse to the Administrator.

About Golub Capital

Golub Capital, founded in 1994, is a leading lender to middle-market companies, with a long track record of investing in senior secured, one stop, second lien and subordinated loans. As of December 31, 2013, Golub Capital managed over $6.0 billion of invested or available capital for senior secured, one stop, second lien and subordinated loan investments in middle-market companies. Since its inception, Golub Capital has closed deals with over 150 middle-market sponsors and repeat transactions with over 100 sponsors.

Golub Capital’s middle-market lending group is managed by a four-member senior management team consisting of Lawrence E. Golub, David B. Golub, Andrew H. Steuerman and Gregory W. Cashman. As of December 31, 2013, Golub Capital’s more than 55 investment professionals had an average of over 12 years of investment experience and were supported by more than 100 administrative and back office personnel that focus on operations, finance, legal and compliance, accounting and reporting, marketing, information technology and office management.

Market Trends

We have identified the following trends that may affect our business:

Target Market.  We believe that small and middle-market companies in the United States with annual revenues between $10 million and $2.5 billion represent a significant growth segment of the U.S. economy and often require substantial capital investments to grow. Middle market companies have generated a significant number of investment opportunities for investment funds managed or advised by Golub Capital, and we believe that this market segment will continue to produce significant investment opportunities for us.

Specialized Lending Requirements.  We believe that several factors render many U.S. financial institutions ill-suited to lend to U.S. middle-market companies. For example, based on the experience of our management team, lending to U.S. middle-market companies (1) is generally more labor intensive than lending to larger companies due to the smaller size of each investment and the fragmented nature of information for such companies, (2) requires due diligence and underwriting practices consistent with the demands and economic limitations of the middle market and (3) may also require more extensive ongoing monitoring by the lender.

Demand for Debt Capital.  We believe there is a large pool of uninvested private equity capital for middle-market companies. We expect private equity firms will seek to leverage their investments by combining equity capital with senior secured loans and subordinated debt from other sources, such as us.

Competition from Bank Lenders.  We believe that many traditional bank lenders to middle-market businesses have either exited or de-emphasized their service and product offerings in the middle market. These traditional lenders have instead focused on lending and providing other services to large corporate clients. We believe this has resulted in fewer key players and the reduced availability of debt capital to the companies we target.

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Market Environment.  We believe that as part of the path of economic recovery following the credit crisis, there has been increased competition for new middle-market investments due to some new non-bank finance companies that have entered the market and due to improving financial performance of middle-market companies. However, we believe that our scale and strong market position will continue to allow us to find investment opportunities with attractive risk-adjusted returns.

Competitive Strengths

Deep, Experienced Management Team.  We are managed by GC Advisors, which, as of September 30, 2013, had access through the Staffing Agreement to the resources and expertise of Golub Capital’s more than 155 employees, led by our chairman, Lawrence E. Golub, and our chief executive officer, David B. Golub. As of December 31, 2013, the more than 55 investment professionals of Golub Capital had an average of over 12 years of investment experience and were supported by more than 100 administrative and back office personnel that focus on operations, finance, legal and compliance, accounting and reporting, marketing, information technology and office management. Golub Capital seeks to hire and retain high-quality investment professionals and reward those personnel based on investor returns. In 2013, Golub Capital was awarded Finance Monthly’s Global Awards 2013 “Credit Asset Manager of the Year” and DealMakers M&A Awards 2013 “Middle Market Lender fo the Year.” In 2012, Golub Capital was awarded the Association for Corporate Growth (ACG) New York Champion’s Award for “Senior Lender Firm of the Year” and the M&A Advisor award for “Lender Firm of the Year.” These awards do not constitute an endorsement by such organizations of the securities being offered by this prospectus.

Leading U.S. Debt Platform Provides Access to Proprietary Relationship-Based Deal Flow.  GC Advisors gives us access to the deal flow of Golub Capital, one of the leading middle-market lenders in the United States. Golub Capital has been ranked a “Top 3” Traditional Middle Market Bookrunner every year from 2008 through 2013 by Thomson Reuters LPC for senior secured loans of up to $100 million for leveraged buyouts (based on number of deals completed). Since its inception, Golub Capital has closed deals with over 150 middle-market sponsors and repeat transactions with over 100 sponsors. We believe that Golub Capital receives relationship-based “early looks” and “last looks” at many investment opportunities in the U.S. middle-market market, allowing it to be highly selective in the transactions it pursues.

Disciplined Investment and Underwriting Process.  GC Advisors utilizes the established investment process of Golub Capital for reviewing lending opportunities, structuring transactions and monitoring investments. Using its disciplined approach to lending, GC Advisors seeks to minimize credit losses through effective underwriting, comprehensive due diligence investigations, structuring and the implementation of restrictive debt covenants.

Regimented Credit Monitoring.  Following each investment, GC Advisors implements a regimented credit monitoring system. This careful approach, which involves ongoing review and analysis by teams of professionals, has enabled us to identify problems early and to assist borrowers before they face difficult liquidity constraints.

Concentrated Middle-Market Focus.  Because of our focus on the middle-market, we understand the following general characteristics of middle-market lending:

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Organizational Structure

The following shows a simplified organizational chart reflecting our relationship with our investment adviser and administrator and our direct and indirect ownership interests in certain of our subsidiaries, including the membership interests of the Securitization Issuer, as of the date of this prospectus:

Recent Developments

On January 17, 2014, Senior Loan Fund II LLC, or SLF II, a wholly owned subsidiary of SLF, entered into a senior secured revolving credit facility, or the SLF Credit Facility, with Wells Fargo Securities, LLC, as administrative agent, and Wells Fargo Bank, N.A., as lender, which allows SLF II to borrow up to $50.0 million at any one time outstanding. The period from the closing date through January 17, 2015 is referred to as the reinvestment period. All amounts outstanding under the SLF Credit Facility are required to be repaid by January 17, 2019. Through the reinvestment period, the SLF Credit Facility bears interest at one-month LIBOR plus a rate between 1.75% and 2.25%, depending on the composition of the collateral asset portfolio, per annum. After the reinvestment period, the rate will reset to LIBOR plus 2.75% per annum for the remaining term of the SLF Credit Facility. In addition to the stated interest expense on the SLF Credit Facility, SLF is required to pay a non-usage fee rate of 0.50% per annum through July 17, 2014 and thereafter between 0.50% and 2.00% per annum depending on the size of the unused portion of the SLF Credit Facility. The SLF Credit Facility is collateralized by all of the assets held by SLF II. SLF and SLF II have made customary representations and warranties and are required to comply with various covenants, reporting requirements and other customary requirements for similar credit facilities.

On February 4, 2014, our board of directors declared a quarterly distribution of $0.32 per share payable on March 28, 2014 to holders of record as of March 17, 2014.

Operating and Regulatory Structure

Our investment activities are managed by GC Advisors and supervised by our board of directors, a majority of whom are independent of us, GC Advisors and its affiliates.

As a business development company, we are required to comply with certain regulatory requirements. For example, while we are permitted to finance investments using leverage, which may include the issuance of shares of preferred stock, or notes and other borrowings, our ability to use leverage is limited in significant respects. See “Regulation.” Any decision on our part to use leverage will depend upon our assessment of the attractiveness of available investment opportunities in relation to the costs and perceived risks of such leverage. GC Advisors makes recommendations to our board of directors with respect to leverage policies. Our board of directors determines our leverage policy, including approving in advance the incurrence of material indebtedness and the execution of material contracts, and directs GC Advisors to implement such policies. The use of leverage to finance investments creates certain risks and potential conflicts of interest. See “Risk Factors — Risks Relating to our Business and Structure — There are significant potential conflicts of interest that could affect our investment returns — Our management and incentive fee structure may create incentives for GC Advisors that are not fully aligned with the interests of our stockholders,” “— Risks Relating to our Business and Structure — Regulations governing our operation as a business development

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company affect our ability to, and the way in which we, raise additional capital. As a business development company, the necessity of raising additional capital exposes us to risks, including the typical risks associated with leverage” and “— Risks Relating to our Business and Structure — We intend to finance our investments with borrowed money, which will magnify the potential for gain or loss on amounts invested and may increase the risk of investing in us.”

Also, as a business development company, we are generally prohibited from acquiring assets other than “qualifying assets” unless, after giving effect to any acquisition, at least 70% of our total assets are qualifying assets. Qualifying assets generally include securities of “eligible portfolio companies,” cash, cash equivalents, U.S. government securities and high-quality debt investments maturing in one year or less from the time of investment. Under the rules of the 1940 Act, “eligible portfolio companies” include (1) private domestic operating companies, (2) public domestic operating companies whose securities are not listed on a national securities exchange (e.g., the New York Stock Exchange, NYSE Amex Equities and The NASDAQ Stock Market) or registered under the Securities Exchange Act of 1934, as amended, or the Exchange Act, and (3) public domestic operating companies having a market capitalization of less than $250 million. Public domestic operating companies whose securities are quoted on the over-the-counter bulletin board and through Pink Sheets LLC are not listed on a national securities exchange and therefore are eligible portfolio companies. See “Regulation.”

Conflicts of Interest

Subject to certain 1940 Act restrictions on co-investments with affiliates, GC Advisors offers us the right to participate in all investment opportunities that it determines are appropriate for us in view of our investment objective, positions, policies, strategies and restrictions as well as regulatory requirements and other relevant factors. Such offers are subject to the exception that, in accordance with GC Advisors’ code of ethics and allocation policies, we might not participate in each individual opportunity but will, on an overall basis, be entitled to participate equitably with other entities sponsored or managed by GC Advisors and its affiliates.

To the extent that we compete with entities sponsored or managed by GC Advisors or its affiliates for a particular investment opportunity, GC Advisors will allocate investment opportunities across the entities for which such opportunities are appropriate, consistent with (1) its internal conflict of interest and allocation policies, (2) the requirements of the Advisers Act and (3) certain restrictions under the 1940 Act regarding co-investments with affiliates. GC Advisors’ allocation policies are intended to ensure that, over time, we may generally share equitably in investment opportunities with other investment funds, accounts or other investment vehicles, together referred to as accounts, sponsored or managed by GC Advisors or its affiliates, particularly those involving a security with limited supply or involving differing classes of securities of the same issuer which may be suitable for us and such other accounts.

GC Advisors and its affiliates have other clients with similar or competing investment objectives, including several private funds that are pursuing an investment strategy similar to ours, some of which are continuing to seek new capital commitments. In serving these clients, GC Advisors may have obligations to other clients or investors in those entities. Our investment objective may overlap with such affiliated accounts. GC Advisors’ allocation procedures are designed to allocate investment opportunities among the accounts sponsored or managed by GC Advisors and its affiliates in a manner consistent with its obligations under the Advisers Act. If two or more accounts with similar investment strategies are actively investing, GC Advisors will seek to allocate investment opportunities among eligible accounts in a manner that is fair and equitable over time and consistent with its allocation policy. GC Advisors has put in place a conflict-resolution policy that addresses the co-investment restrictions set forth under the 1940 Act. See “Risk Factors — Risks Relating to our Business and Structure — There are significant potential conflicts of interest that could affect our investment returns — Conflicts related to obligations GC Advisors’ investment committee, GC Advisors or its affiliates have to other clients.”

GC Advisors seeks to ensure the equitable allocation of investment opportunities when we are able to invest alongside other accounts sponsored or managed by GC Advisors and its affiliates. When we invest alongside such other accounts, such investments are made consistent with GC Advisors’ allocation policy. Under this allocation policy, GC Advisors will determine separately a recommended allocation, or Target

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Allocation, as a percentage of total capital of us and similar eligible accounts and a minimum and maximum investment size for each asset class in which we and similar eligible accounts sponsored or managed by GC Advisors and its affiliates invest. If an investment opportunity is appropriate for us and another similar eligible account, the opportunity will be allocated based on the applicable Target Allocation multiplied by total capital of each of us and such other eligible accounts, subject to minimum and maximum investment size limits. Where there is an insufficient amount of an investment opportunity to fully satisfy us and other accounts sponsored or managed by GC Advisors or its affiliates, the allocation policy further provides that allocations among us and such other accounts will generally be made pro rata to us and each other eligible account based on the total capital allocated to the asset class of the investment and subject to the minimum and maximum investment size limits for each such party. In situations in which co-investment with other entities sponsored or managed by GC Advisors or its affiliates is not permitted or appropriate, such as when, in the absence of exemptive relief described below, we and such other entities would be making different investments in the same issuer, GC Advisors will need to decide whether we or such other entity or entities will proceed with the investment. GC Advisors will make these determinations based on its policies and procedures, which generally require that such opportunities be offered to eligible accounts on a basis that will be fair and equitable over time, including, for example, through random or rotational methods. We and GC Advisors have submitted an exemptive application to the SEC to permit greater flexibility to negotiate the terms of co-investments if our board of directors determines that it would be advantageous for us to co-invest with other accounts sponsored or managed by GC Advisors or its affiliates in a manner consistent with our investment objectives, positions, policies, strategies and restrictions as well as regulatory requirements and other pertinent factors. Our board of directors regularly reviews the allocation policy of Golub Capital and annually reviews the code of ethics of GC Advisors. See “Related Party Transactions and Certain Relationships.”

Additionally, under our incentive fee structure, GC Advisors benefits when we recognize capital gains and, because GC Advisors determines when a holding is sold, GC Advisors controls the timing of the recognition of such capital gains. See “Risk Factors — Risks Relating to our Business and Structure — There are significant potential conflicts of interest that could affect our investment returns — Our management and incentive fee structure may create incentives for GC Advisors that are not fully aligned with the interests of our stockholders.” In addition, because the base management fee that we pay to GC Advisors is based on our average adjusted gross assets, including those assets acquired through the use of leverage, GC Advisors has a financial incentive to incur leverage.

Our principal executive offices are located at 150 South Wacker Drive, Suite 800, Chicago, Illinois 60606, and our telephone number is (312) 205-5050. Our corporate website is located at www.golubcapitalbdc.com. Information on our website is not incorporated into or a part of this prospectus.

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FEES AND EXPENSES

The following table is intended to assist you in understanding the costs and expenses that an investor in shares of our common stock will bear directly or indirectly. However, we caution you that some of the percentages indicated in the table below are estimates and may vary. Actual costs and expenses incurred by investors in shares of our common stock may be greater than the percentage estimates in the table below. The following table excludes one-time fees payable to third parties not affiliated with GC Advisors that were incurred in connection with the Debt Securitization but includes all of the applicable ongoing fees and expenses of the Debt Securitization. Whenever this prospectus contains a reference to fees or expenses paid by “us” or “Golub Capital BDC,” or that “we” will pay fees or expenses, our common stockholders will indirectly bear such fees or expenses.

Stockholder transaction expenses:
Sales load (as a percentage of offering price)			—	(1)
Offering expenses (as a percentage of offering price)			—	(2)
Dividend reinvestment plan expenses			None	(3)
Total stockholder transaction expenses (as a percentage of offering price)			—
Annual expenses (as a percentage of net assets attributable to common stock):
Management fees			2.32	%(4)
Incentive fees payable under the Investment Advisory Agreement (20%)			1.84	%(5)
Interest payments on borrowed funds			2.48	%(6)
Other expenses			0.83	%(7)
Total annual expenses			7.47	%(8)

GC Advisors, as collateral manager for the Securitization Issuer under the collateral management agreement, is entitled to receive an annual fee in an amount equal to 0.35% of the principal balance of the portfolio loans held by the Securitization Issuer at the beginning of the collection period relating to each payment date, which is payable in arrears on each payment date. This fee, which is less than the management fee payable under the Investment Advisory Agreement, is paid directly by the Securitization Issuer to GC Advisors and offset against such management fee. Accordingly, the 1.375% management fee paid by us to GC Advisors under the Investment Advisory Agreement on all of our assets, including those indirectly held through the Securitization Issuer, is reduced, on a dollar-for-dollar basis, by an amount equal to such 0.35% fee paid to GC Advisors by the Securitization Issuer. The term “collection period” refers to a quarterly period running from the day after the end of the prior collection period to the fifth business day of the calendar month in which a payment date occurs. This fee may be waived by the collateral manager. The collateral management agreement does not include any incentive fee payable to GC Advisors.

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For purposes of this table, the SEC requires that the “Management fees” percentage be calculated as a percentage of net assets attributable to common stock, rather than total assets, including assets that have been funded with borrowed monies because common stockholders bear all of this cost. If the base management fee portion of the “Management fees” percentage were calculated instead as a percentage of our total assets, our base management fee portion of the “Management fees” percentage would be approximately 1.21% of total assets. The base management fee in the table above is based on net assets of $660.0 million and leverage of $591.6 million as of December 31, 2013.

We accomplish this limitation by subjecting each quarterly incentive fee payable under the Income and Capital Gain Incentive Fee Calculation (as defined below) to a cap, or the Incentive Fee Cap. The Incentive Fee Cap in any quarter is equal to the difference between (a) 20.0% of Cumulative Pre-Incentive Fee Net Income and (b) cumulative incentive fees of any kind paid to GC Advisors by Golub Capital BDC since April 13, 2010, the effective date of our election to become a business development company. To the extent the Incentive Fee Cap is zero or a negative value in any quarter, no incentive fee would be payable in that quarter. “Cumulative Pre-Incentive Fee Net Income” is equal to the sum of (a) Pre-Incentive Fee Net Investment Income (as defined below) for each period since April 13, 2010 and (b) cumulative aggregate realized capital gains, cumulative aggregate realized capital losses, cumulative aggregate unrealized capital depreciation and cumulative aggregate unrealized capital appreciation since April 13, 2010.

“Pre-Incentive Fee Net Investment Income” means interest income, dividend income and any other income (including any other fees such as commitment, origination, structuring, diligence and consulting fees or other fees that we receive from portfolio companies, but excluding fees for providing managerial assistance) accrued during the calendar quarter, minus operating expenses for the calendar quarter (including the base management fee, taxes, any expenses payable under the Investment Advisory Agreement and an administration agreement, or the Administration Agreement, with the Administrator, any expenses of securitizations and any interest expense and dividends paid on any outstanding preferred stock, but excluding the incentive fee). Pre-Incentive Fee Net Investment Income includes, in the case of investments with a deferred interest feature such as market discount, debt instruments with payment-in-kind, or PIK, interest, preferred stock with PIK dividends and zero coupon securities, accrued income that we have not yet received in cash.

The income and capital gain incentive fee calculation, or the Income and Capital Gain Incentive Fee Calculation, has two parts. The income component is calculated quarterly in arrears based on our Pre-Incentive Fee Net Investment Income for the immediately preceding calendar quarter.

Pre-Incentive Fee Net Investment Income does not include any realized capital gains, realized capital losses or unrealized capital appreciation or depreciation. Because of the structure of the income component, it is possible that an incentive fee may be calculated under this formula with respect to a period in which we have incurred a loss. For example, if we receive Pre-Incentive Fee Net Investment Income in excess of the hurdle rate (as defined below) for a calendar quarter, the income component will result in a positive value and an incentive fee will be paid unless the payment of such incentive fee would cause us to pay incentive fees on a cumulative basis that exceed 20.0% of our Cumulative Pre-Incentive Fee Net Income.

Pre-Incentive Fee Net Investment Income, expressed as a rate of return on the value of our net assets (defined as total assets less indebtedness and before taking into account any incentive fees payable during the period) at the end of the immediately preceding calendar quarter, is compared to a fixed “hurdle rate” of 2.0% quarterly. If market interest rates rise, we may be able to invest our funds in debt instruments that provide for a higher return, which would increase our Pre-Incentive Fee Net Investment Income and make it easier for GC Advisors to surpass the fixed hurdle rate and receive an incentive fee

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based on such net investment income. Our Pre-Incentive Fee Net Investment Income used to calculate this part of the incentive fee is also included in the amount of our total assets (excluding cash and cash equivalents but including assets purchased with borrowed funds and securitization-related assets, leverage, unrealized depreciation or appreciation on derivative instruments and cash collateral on deposit with custodian) used to calculate the 1.375% base management fee.

We calculate the income component of the Income and Capital Gain Incentive Fee Calculation with respect to our Pre-Incentive Fee Net Investment Income quarterly, in arrears, as follows:

The sum of these calculations yields the income incentive fee. This amount is appropriately adjusted for any share issuances or repurchases during the quarter.

The second part of the Income and Capital Gain Incentive Fee Calculation, or the Capital Gain Incentive Fee, equals (a) 20.0% of our Capital Gain Incentive Fee Base (as defined below), if any, calculated in arrears as of the end of each calendar year (or upon termination of the Investment Advisory Agreement, as of the termination date), commencing with the calendar year ending December 31, 2010, less (b) the aggregate amount of any previously paid Capital Gain Incentive Fees. Our “Capital Gain Incentive Fee Base” equals the sum of (1) our realized capital gains, if any, on a cumulative positive basis from April 13, 2010 through the end of each calendar year, (2) all realized capital losses on a cumulative basis and (3) all unrealized capital depreciation on a cumulative basis.

As described above, the incentive fee will not be paid at any time where after such payment the cumulative incentive fees paid to date would be greater than 20.0% of the Cumulative Pre-Incentive Net Income since April 13, 2010. We will accrue the Capital Gain Incentive Fee if, on a cumulative basis, the sum of net realized gains/(losses) plus net unrealized appreciation/(depreciation) is positive. The Capital Gain Incentive Fee is calculated on a cumulative basis from the date we elected to become a business development company through the end of each calendar year. For the year ended September 30, 2013 and the three months ended December 31, 2013, the Capital Gain Incentive Fee was zero. For a more detailed discussion of the calculation of the incentive fee, see “Management Agreements — Investment Advisory Agreement — Management Fee.”

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Example

The following example demonstrates the projected dollar amount of total cumulative expenses that would be incurred over various periods with respect to a hypothetical investment in our common stock. This example and the expenses in the table above should not be considered a representation of our future expenses, and actual expenses (including the cost of debt, if any, and other expenses) may be greater or less than those shown.

		1 year				3 years				5 years				10 years
You would pay the following expenses on a $1,000 investment, assuming a 5% annual return		$	75			$	219			$	355			$	669

The foregoing table is to assist you in understanding the various costs and expenses that an investor in our common stock will bear directly or indirectly. While the example assumes, as required by the SEC, a 5% annual return, our performance will vary and may result in a return greater or less than 5%. The incentive fee under the Investment Advisory Agreement, which, assuming a 5% annual return, would either not be payable or have an immaterial impact on the expense amounts shown above, is not included in the example. Under our Investment Advisory Agreement, no incentive fee would be payable if we have a 5% annual return. If we achieve sufficient returns on our investments, including through the realization of capital gains, to trigger an incentive fee of a material amount, our expenses, and returns to our investors, would be higher. The example assumes that all dividends and other distributions are reinvested at net asset value. Under certain circumstances, reinvestment of dividends and other distributions under our dividend reinvestment plan may occur at a price per share that differs from net asset value. See “Dividend Reinvestment Plan” for more information.

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RISK FACTORS

Investing in our securities involves a number of significant risks. Before you invest in our securities, you should be aware of various risks, including those described below. You should carefully consider these risk factors, together with all of the other information included in this prospectus and the applicable prospectus supplement, before you decide whether to make an investment in our securities. The risks set out below are not the only risks we face. Additional risks and uncertainties not presently known to us or not presently deemed material by us may also impair our operations and performance. If any of the following events occur, our business, financial condition, results of operations and cash flows could be materially and adversely affected. In such case, our net asset value and the trading price of our common stock could decline, and you may lose all or part of your investment. The risk factors described below are the principal risk factors associated with an investment in us as well as those factors generally associated with an investment company with investment objectives, investment policies, capital structure or trading markets similar to ours.

Risks Relating to Our Business and Structure

We are subject to risks associated with the current interest rate environment.

Since the economic downturn that began in mid-2007, interest rates have remained low. Because longer-term inflationary pressure is likely to result from the U.S. government’s fiscal policies and challenges during this time, we will likely experience rising interest rates, rather than falling rates, over our investment horizon.

To the extent we borrow money or issue debt securities or preferred stock to make investments, our net investment income will depend, in part, upon the difference between the rate at which we borrow funds or pay interest or dividends on such debt securities or preferred stock and the rate at which we invest these funds. In addition, many of our debt investments and borrowings have floating interest rates that reset on a periodic basis. As a result, a significant change in market interest rates could have a material adverse effect on our net investment income. In periods of rising interest rates, our cost of funds will increase because the interest rates on the Class A Notes and Class B Notes issued under the Debt Securitization and amounts borrowed under the Credit Facility are floating, which could reduce our net investment income to the extent any debt investments have fixed interest rates. We expect that our long-term fixed-rate investments will be financed primarily with issuances of equity and long-term debt securities. We may use interest rate risk management techniques in an effort to limit our exposure to interest rate fluctuations. Such techniques may include various interest rate hedging activities to the extent permitted by the 1940 Act and applicable commodities laws. These activities may limit our ability to participate in the benefits of lower interest rates with respect to the hedged borrowings. Adverse developments resulting from changes in interest rates or hedging transactions could have a material adverse effect on our business, financial condition and results of operations.

You should also be aware that a rise in the general level of interest rates typically will lead to higher interest rates applicable to our debt investments. Accordingly, an increase in interest rates may result in an increase of the amount of incentive fees payable to GC Advisors.

In addition, a decline in the prices of the debt we own could adversely affect the trading price of our common stock and our net asset value. Also, an increase in interest rates available to investors could make an investment in our common stock less attractive if we are not able to increase our distribution rate, which could reduce the value of our common stock.

We are dependent upon GC Advisors for our future success and upon their access to the investment professionals and partners of Golub Capital and its affiliates.

We do not have any internal management capacity or employees. We depend on the diligence, skill and network of business contacts of the senior investment professionals of GC Advisors to achieve our investment objective. We expect that GC Advisors will evaluate, negotiate, structure, close and monitor our investments in accordance with the terms of the Investment Advisory Agreement. We can offer no assurance, however, that the senior investment professionals of GC Advisors, including the members of its investment committee, will continue to provide investment advice to us. If these individuals do not maintain their existing relationships with Golub Capital and its affiliates and do not develop new relationships with other sources of investment

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opportunities, we may not be able to grow our investment portfolio. In addition, individuals with whom the senior investment professionals of GC Advisors have relationships are not obligated to provide us with investment opportunities. Therefore, we can offer no assurance that such relationships will generate investment opportunities for us.

GC Advisors is an affiliate of Golub Capital and depends upon access to the investment professionals and other resources of Golub Capital and its affiliates to fulfill its obligations to us under the Investment Advisory Agreement. GC Advisors also depends upon Golub Capital to obtain access to deal flow generated by the professionals of Golub Capital and its affiliates. Under the Staffing Agreement, Golub Capital provides GC Advisors with the resources necessary to fulfill these obligations. The Staffing Agreement provides that Golub Capital makes available to GC Advisors experienced investment professionals and provides access to the senior investment personnel of Golub Capital for purposes of evaluating, negotiating, structuring, closing and monitoring our investments. We are not a party to the Staffing Agreement and cannot assure you that Golub Capital will fulfill its obligations under the agreement. If Golub Capital fails to perform, we cannot assure you that GC Advisors will enforce the Staffing Agreement, that such agreement will not be terminated by either party or that we will continue to have access to the investment professionals of Golub Capital and its affiliates or their information and deal flow.

Our business model depends to a significant extent upon strong referral relationships with sponsors. Any inability of GC Advisors to maintain or develop these relationships, or the failure of these relationships to generate investment opportunities, could adversely affect our business.

We depend upon Golub Capital’s relationships with sponsors, and we intend to rely to a significant extent upon these relationships to provide us with potential investment opportunities. If Golub Capital fails to maintain such relationships, or to develop new relationships with other sponsors or sources of investment opportunities, we will not be able to grow our investment portfolio. In addition, individuals with whom the principals of Golub Capital have relationships are not obligated to provide us with investment opportunities, and, therefore, we can offer no assurance that these relationships will generate investment opportunities for us in the future.

We have a limited operating history as a business development company.

Our predecessor, GCMF, was formed in June 2007 and commenced operations in July 2007. Prior to the completion of our initial public offering in April 2010, we did not operate as a business development company or RIC. As a result of our limited operating history, we are subject to the business risks and uncertainties associated with recently formed businesses, including the risk that we will not achieve our investment objective and that the value of your investment could decline substantially.

The 1940 Act and the Code impose numerous constraints on the operations of business development companies and RICs that do not apply to other accounts sponsored or managed by GC Advisors and its affiliates. Business development companies are required, for example, to invest at least 70% of their total assets in qualifying assets. Moreover, qualification for taxation as a RIC requires satisfaction of source-of-income, asset diversification and distribution requirements. Neither we nor GC Advisors has significant experience operating under these constraints, which may hinder our ability to take advantage of attractive investment opportunities and to achieve our investment objective.

We may not replicate the historical results achieved by our predecessor, GCMF, or other entities managed or sponsored by members of GC Advisors’ investment committee, or by GC Advisors or its affiliates.

Our investments may differ from those of our predecessor, GCMF, and existing accounts that are or have been sponsored or managed by members of GC Advisors’ investment committee, GC Advisors or affiliates of GC Advisors. Investors in our securities are not acquiring an interest in any accounts that are or have been sponsored or managed by members of GC Advisors’ investment committee, GC Advisors or affiliates of GC Advisors. We may consider co-investing in portfolio investments with other accounts sponsored or managed by members of GC Advisors’ investment committee, GC Advisors or its affiliates. Any such investments are subject to regulatory limitations and approvals by directors who are not “interested persons,” as defined in the 1940 Act. We can offer no assurance, however, that we will obtain such approvals or develop

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opportunities that comply with such limitations. We also cannot assure you that we will replicate the historical results achieved by members of the investment committee, and we caution you that our investment returns could be substantially lower than the returns achieved by them in prior periods. Additionally, all or a portion of the prior results may have been achieved in particular market conditions which may never be repeated. Moreover, current or future market volatility and regulatory uncertainty may have an adverse impact on our future performance.

Our financial condition, results of operations and cash flows depend on our ability to manage our business effectively.

Our ability to achieve our investment objective depends on our ability to manage our business and to grow. This depends, in turn, on GC Advisors’ ability to identify, invest in and monitor companies that meet our investment criteria. The achievement of our investment objectives on a cost-effective basis depends upon GC Advisors’ execution of our investment process, its ability to provide competent, attentive and efficient services to us and, to a lesser extent, our access to financing on acceptable terms. GC Advisors has substantial responsibilities under the Investment Advisory Agreement, as well as responsibilities in connection with the management of other accounts sponsored or managed by GC Advisors, members of GC Advisors’ investment committee or Golub Capital and its affiliates. The personnel of the Administrator and its affiliates may be called upon to provide managerial assistance to our portfolio companies. These activities may distract them or slow our rate of investment. Any failure to manage our business and our future growth effectively could have a material adverse effect on our business, financial condition, results of operations and cash flows.

There are significant potential conflicts of interest that could affect our investment returns.

As a result of our arrangements with GC Advisors and its affiliates and GC Advisors’ investment committee, there may be times when GC Advisors or such persons have interests that differ from those of our securityholders, giving rise to a conflict of interest.

Conflicts related to obligations GC Advisors’ investment committee, GC Advisors or its affiliates have to other clients.

The members of GC Advisors’ investment committee serve or may serve as officers, directors or principals of entities that operate in the same or a related line of business as we do or of accounts sponsored or managed by GC Advisors or its affiliates. Similarly, GC Advisors or its affiliates currently manage and may have other clients with similar or competing investment objectives. In serving in these multiple capacities, they may have obligations to other clients or investors in those entities, the fulfillment of which may not be in the best interests of us or our stockholders. For example, Lawrence E. Golub and David B. Golub have management responsibilities for other accounts sponsored or managed by GC Advisors or its affiliates. Our investment objective may overlap with the investment objectives of such affiliated accounts. For example, GC Advisors currently manages several private funds that are pursuing an investment strategy similar to ours, some of which are continuing to seek new capital commitments, and we may compete with these and other accounts sponsored or managed by GC Advisors and its affiliates for capital and investment opportunities. As a result, those individuals may face conflicts in the allocation of investment opportunities among us and other accounts advised by or affiliated with GC Advisors. GC Advisors seeks to allocate investment opportunities among eligible accounts in a manner that is fair and equitable over time and consistent with its allocation policy. However, we can offer no assurance that such opportunities will be allocated to us fairly or equitably in the short-term or over time. If sufficient securities or loan amounts are available to satisfy our and each such account’s proposed investment, the opportunity will be allocated in accordance with GC Advisor’s pre-transaction determination. Where there is an insufficient amount of an investment opportunity to fully satisfy us and other accounts sponsored or managed by GC Advisors or its affiliates, the allocation policy further provides that allocations among us and other accounts will generally be made pro rata to us and each other eligible account based on the total capital allocated to the asset class of the investment and subject to the minimum and maximum investment size limits for each such party. However, there can be no assurance that we will be able to participate in all investment opportunities that are suitable to us.

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GC Advisors’ investment committee, GC Advisors or its affiliates may, from time to time, possess material nonpublic information, limiting our investment discretion.

Principals of GC Advisors and its affiliates and members of GC Advisors’ investment committee may serve as directors of, or in a similar capacity with, companies in which we invest, the securities of which are purchased or sold on our behalf. In the event that material nonpublic information is obtained with respect to such companies, or we become subject to trading restrictions under the internal trading policies of those companies or as a result of applicable law or regulations, we could be prohibited for a period of time from purchasing or selling the securities of such companies, and this prohibition may have an adverse effect on us.

Our management and incentive fee structure may create incentives for GC Advisors that are not fully aligned with the interests of our stockholders.

In the course of our investing activities, we pay management and incentive fees to GC Advisors. The management fee is based on our average adjusted gross assets and the incentive fee is computed and paid on income, both of which include leverage. As a result, investors in our common stock will invest on a “gross” basis and receive distributions on a “net” basis after expenses, resulting in a lower rate of return than one might achieve through direct investments. Because these fees are based on our average adjusted gross assets, GC Advisors benefits when we incur debt or use leverage. Although GC Advisors makes recommendations to our board of directors with respect to leverage policies, our board of directors determines our leverage policy, including approving in advance the incurrence of material indebtedness and the execution of material contracts.

Additionally, the incentive fee payable by us to GC Advisors may create an incentive for GC Advisors to cause us to realize capital gains or losses that may not be in the best interests of us or our stockholders. Under the incentive fee structure, GC Advisors benefits when we recognize capital gains and, because GC Advisors determines when a holding is sold, GC Advisors controls the timing of the recognition of such capital gains. Our board of directors is charged with protecting our stockholders’ interests by monitoring how GC Advisors addresses these and other conflicts of interest associated with its management services and compensation. While they are not expected to review or approve each borrowing, our independent directors periodically review GC Advisors’ services and fees as well as its portfolio management decisions and portfolio performance. In connection with these reviews, our independent directors consider whether our fees and expenses (including those related to leverage) remain appropriate. As a result of this arrangement, GC Advisors or its affiliates may from time to time have interests that differ from those of our securityholders, giving rise to a conflict.

The management and incentive fees payable by us to GC Advisors may create an incentive for GC Advisors to make investments on our behalf that are riskier or more speculative than would be the case in the absence of such compensation arrangement. The way in which these fees are payable to GC Advisors is determined may encourage GC Advisors to use leverage to increase the return on our investments. Under certain circumstances, the use of leverage may increase the likelihood of default, which would disfavor our securityholders.

The part of the management and incentive fees payable to GC Advisors that relates to our net investment income is computed and paid on income that may include interest income that has been accrued but not yet received in cash, such as market discount, debt instruments with PIK interest, preferred stock with PIK dividends and zero coupon securities. This fee structure may be considered to involve a conflict of interest for GC Advisors to the extent that it may encourage GC Advisors to favor debt financings that provide for deferred interest, rather than current cash payments of interest. GC Advisors may have an incentive to invest in deferred interest securities in circumstances where it would not have done so but for the opportunity to continue to earn the fees even when the issuers of the deferred interest securities would not be able to make actual cash payments to us on such securities. This risk could be increased because GC Advisors is not obligated to reimburse us for any fees received even if we subsequently incur losses or never receive in cash the deferred income that was previously accrued.

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Our incentive fee may induce GC Advisors to make certain investments, including speculative investments.

The incentive fee payable by us to GC Advisors may create an incentive for GC Advisors to make investments on our behalf that are riskier or more speculative than would be the case in the absence of such compensation arrangement. The way in which the incentive fee payable to GC Advisors is determined may encourage GC Advisors to use leverage to increase the return on our investments. Under certain circumstances, the use of leverage may increase the likelihood of default, which would disfavor our securityholders.

The incentive fee payable by us to GC Advisors also may create an incentive for GC Advisors to invest on our behalf in instruments that have a deferred interest feature. Under these investments, we accrue the interest over the life of the investment but do not receive the cash income from the investment until the end of the term. Our net investment income used to calculate the income portion of our investment fee, however, includes accrued interest. Thus, a portion of this incentive fee is based on income that we have not yet received in cash, such as market discount, debt instruments with PIK interest, preferred stock with PIK dividends and zero coupon securities.

The valuation process for certain of our portfolio holdings creates a conflict of interest.

The majority of our portfolio investments are expected to be made in the form of securities that are not publicly traded. As a result, our board of directors will determine the fair value of these securities in good faith as described below in “— Many of our portfolio investments are recorded at fair value as determined in good faith by our board of directors and, as a result, there may be uncertainty as to the value of our portfolio investments.” In connection with that determination, investment professionals from GC Advisors may provide our board of directors with portfolio company valuations based upon the most recent portfolio company financial statements available and projected financial results of each portfolio company. In addition, Lawrence E. Golub and David B. Golub have an indirect pecuniary interest in GC Advisors. The participation of GC Advisors’ investment professionals in our valuation process, and the indirect pecuniary interest in GC Advisors by Lawrence E. Golub and David B. Golub, could result in a conflict of interest as GC Advisors’ management fee is based, in part, on our average adjusted gross assets (including leverage but excluding cash) and our incentive fees will be based, in part, on unrealized gains and losses.

Conflicts related to other arrangements with GC Advisors or its affiliates.

We have entered into a license agreement with Golub Capital LLC under which Golub Capital LLC has granted us a non-exclusive, royalty-free license to use the name “Golub Capital”. See “Management Agreements — License Agreement.” In addition, we pay to the Administrator our allocable portion of overhead and other expenses incurred by the Administrator in performing its obligations under the Administration Agreement, such as rent and our allocable portion of the cost of our chief financial officer and chief compliance officer and their respective staffs. These arrangements create conflicts of interest that our board of directors must monitor.

The Investment Advisory Agreement with GC Advisors and the Administration Agreement with the Administrator were not negotiated on an arm’s-length basis and may not be as favorable to us as if they had been negotiated with an unaffiliated third party.

The Investment Advisory Agreement and the Administration Agreement, including its assignment to Golub Capital LLC, were negotiated between related parties. Consequently, their terms, including fees payable to GC Advisors, may not be as favorable to us as if they had been negotiated with an unaffiliated third party. In addition, we may choose not to enforce, or to enforce less vigorously, our rights and remedies under these agreements because of our desire to maintain our ongoing relationship with GC Advisors, the Administrator and their respective affiliates. Any such decision, however, would breach our fiduciary obligations to our stockholders.

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Our ability to enter into transactions with our affiliates will be restricted, which may limit the scope of investments available to us.

We are prohibited under the 1940 Act from participating in certain transactions with our affiliates without the prior approval of our independent directors and, in some cases, the SEC. Any person that owns, directly or indirectly, five percent or more of our outstanding voting securities is our affiliate for purposes of the 1940 Act, and we are generally prohibited from buying or selling any security from or to such affiliate, absent the prior approval of our independent directors. We consider GC Advisors and its affiliates to be our affiliates for such purposes. The 1940 Act also prohibits certain “joint” transactions with certain of our affiliates, which could include investments in the same portfolio company, without prior approval of our independent directors and, in some cases, the SEC. We are prohibited from buying or selling any security from or to, among others, any person who owns more than 25% of our voting securities or certain of that person’s affiliates, or entering into prohibited joint transactions with such persons, absent the prior approval of the SEC.

We may, however, invest alongside GC Advisors’ and its affiliates’ other clients in certain circumstances where doing so is consistent with applicable law and SEC staff, or Staff, interpretations. For example, we may invest alongside such accounts consistent with guidance promulgated by the Staff permitting us and such other accounts to purchase interests in a single class of privately placed securities so long as certain conditions are met, including that GC Advisors, acting on our behalf and on behalf of its other clients, negotiates no term other than price. We may also invest alongside GC Advisors’ other clients as otherwise permissible under regulatory guidance, applicable regulations and GC Advisors’ allocation policy. Under this allocation policy, GC Advisors will determine separately a Target Allocation as a percentage of total capital of us and similar eligible accounts and a minimum and maximum investment size for each asset class in which we and similar eligible accounts sponsored or managed by GC Advisors and its affiliates invest. If an investment opportunity is appropriate for us and another similar eligible account, the opportunity will be allocated based on the applicable Target Allocation multiplied by total capital of each of us and such other eligible accounts, subject to minimum and maximum investment size limits. Where there is an insufficient amount of an investment opportunity to fully satisfy us and other accounts sponsored or managed by GC Advisors or its affiliates, the allocation policy further provides that allocations among us and such other accounts will generally be made pro rata to us and each other eligible account based on the total capital allocated to the asset class of the investment and subject to the minimum and maximum investment size limits for each such party. However, we can offer no assurance that investment opportunities will be allocated to us fairly or equitably in the short-term or over time.

In situations in which co-investment with other accounts sponsored or managed by GC Advisors or its affiliates is not permitted or appropriate, such as when, in the absence of exemptive relief described below, we and such other entities may make investments in the same issuer or where the different investments could be expected to result in a conflict between our interests and those of other GC Advisors clients, GC Advisors needs to decide whether we or such other entity or entities will proceed with such investments. GC Advisors makes these determinations based on its policies and procedures, which generally require that such investment opportunities be offered to eligible accounts on a basis that is fair and equitable over time, including, for example, through random or rotational methods. Moreover, in certain circumstances, we may be unable to invest in an issuer in which an account sponsored or managed by GC Advisors or its affiliates has previously invested. Similar restrictions limit our ability to transact business with our officers or directors or their affiliates. These restrictions may limit the scope of investment opportunities that would otherwise be available to us.

We and GC Advisors have submitted an application for exemptive relief from the SEC to permit greater flexibility to negotiate the terms of co-investments if our board of directors determines that it would be advantageous for us to co-invest with other accounts sponsored or managed by GC Advisors or its affiliates in a manner consistent with our investment objectives, positions, policies, strategies and restrictions as well as regulatory requirements and other pertinent factors. We believe that co-investments by us and other accounts sponsored or managed by GC Advisors and its affiliates may afford us additional investment opportunities and an ability to achieve greater diversification. Accordingly, our application for exemptive relief seeks an exemptive order permitting us to invest with accounts sponsored or managed by GC Advisors or its affiliates in the same portfolio companies under circumstances in which such investments would otherwise not be

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permitted under the 1940 Act. We expect that such exemptive relief permitting co-investments, if granted, would apply only if our independent directors review and approve each co-investment.

We operate in a highly competitive market for investment opportunities, which could reduce returns and result in losses.

A number of entities compete with us to make the types of investments that we plan to make. We compete with public and private funds, commercial and investment banks, commercial financing companies and, to the extent they provide an alternative form of financing, private equity and hedge funds. Many of our competitors are substantially larger and have considerably greater financial, technical and marketing resources than we do. For example, we believe some of our competitors may have access to funding sources that are not available to us. In addition, some of our competitors may have higher risk tolerances or different risk assessments, which could allow them to consider a wider variety of investments and establish more relationships than us. Furthermore, many of our competitors are not subject to the regulatory restrictions that the 1940 Act imposes on us as a business development company or the source of income, asset diversification and distribution requirements we must satisfy to maintain our qualification as a RIC. The competitive pressures we face may have a material adverse effect on our business, financial condition, results of operations and cash flows. As a result of this competition, we may not be able to take advantage of attractive investment opportunities from time to time, and we may not be able to identify and make investments that are consistent with our investment objective.

With respect to the investments we make, we do not seek to compete based primarily on the interest rates we offer, and we believe that some of our competitors may make loans with interest rates that will be lower than the rates we offer. In the secondary market for acquiring existing loans, we compete generally on the basis of pricing terms. With respect to all investments, we may lose some investment opportunities if we do not match our competitors’ pricing, terms and structure. However, if we match our competitors’ pricing, terms and structure, we may experience decreased net interest income, lower yields and increased risk of credit loss. We may also compete for investment opportunities with accounts managed or sponsored by GC Advisors or its affiliates. Although GC Advisors allocates opportunities in accordance with its policies and procedures, allocations to such other accounts will reduce the amount and frequency of opportunities available to us and may not be in the best interests of us and our securityholders. Moreover, the performance of investments will not be known at the time of allocation. See “Risk Factors — Risks Relating to Our Business and Structure —  There are significant potential conflicts of interest that could affect our investment returns — Conflicts related to obligations GC Advisors’ investment committee, GC Advisors or its affiliates have to other clients” and “Related Party Transactions and Certain Relationships.”

We will be subject to corporate-level income tax if we are unable to qualify as a RIC.

To qualify as a RIC under the Code, we must meet certain source-of-income, asset diversification and distribution requirements. The distribution requirement for a RIC is satisfied if we distribute at least 90% of our net ordinary income and net short-term capital gains in excess of net long-term capital losses, if any, to our stockholders on an annual basis. We are subject, to the extent we use debt financing, to certain asset coverage ratio requirements under the 1940 Act and financial covenants under loan and credit agreements that could, under certain circumstances, restrict us from making distributions necessary to qualify as a RIC. If we are unable to obtain cash from other sources, we may fail to qualify as a RIC and, thus, may be subject to corporate-level income tax. To qualify as a RIC, we must also meet certain asset diversification requirements at the end of each calendar quarter. Failure to meet these requirements may result in our having to dispose of certain investments quickly in order to prevent the loss of our qualification as a RIC. Because most of our investments are in private or thinly traded public companies, any such dispositions could be made at disadvantageous prices and may result in substantial losses. If we fail to qualify as a RIC for any reason and become subject to corporate-level income tax, the resulting corporate taxes could substantially reduce our net assets, the amount of income available for distributions to stockholders and the amount of our distributions and the amount of funds available for new investments. Such a failure would have a material adverse effect on us and our securityholders. See “Material U.S. Federal Income Tax Considerations — Taxation as a RIC.”

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We may need to raise additional capital to grow because we must distribute most of our income.

We may need additional capital to fund new investments and grow our portfolio of investments. We intend to access the capital markets periodically to issue debt or equity securities or borrow from financial institutions in order to obtain such additional capital. Unfavorable economic conditions could increase our funding costs, limit our access to the capital markets or result in a decision by lenders not to extend credit to us. A reduction in the availability of new capital could limit our ability to grow. In addition, we are required to distribute at least 90% of our net ordinary income and net short-term capital gains in excess of net long-term capital losses, if any, to our stockholders to maintain our qualification as a RIC. As a result, these earnings are not available to fund new investments. An inability to access the capital markets successfully could limit our ability to grow our business and execute our business strategy fully and could decrease our earnings, if any, which may have an adverse effect on the value of our securities.

We may have difficulty paying our required distributions if we recognize income before, or without, receiving cash representing such income.

For U.S. federal income tax purposes, we include in income certain amounts that we have not yet received in cash, such as the accretion of original issue discount. This may arise if we receive warrants in connection with the making of a loan and in other circumstances, or through contracted PIK interest, which represents contractual interest added to the loan balance and due at the end of the loan term. Such original issue discount, which could be significant relative to our overall investment activities, or increases in loan balances as a result of contracted PIK arrangements, is included in income before we receive any corresponding cash payments. We also may be required to include in income certain other amounts that we do not receive in cash.

That part of the incentive fee payable by us that relates to our net investment income is computed and paid on income that may include interest that has been accrued but not yet received in cash, such as market discount, debt instruments with PIK interest, preferred stock with PIK dividends and zero coupon securities. If a portfolio company defaults on a loan that is structured to provide accrued interest, it is possible that accrued interest previously used in the calculation of the incentive fee will become uncollectible.

Since in certain cases we may recognize income before or without receiving cash representing such income, we may have difficulty meeting the requirement to distribute at least 90% of our net ordinary income and net short-term capital gains in excess of net long-term capital losses, if any, to our stockholders to maintain our qualification as a RIC. In such a case, we may have to sell some of our investments at times we would not consider advantageous, raise additional debt or equity capital or reduce new investment originations to meet these distribution requirements. If we are not able to obtain such cash from other sources, we may fail to qualify as a RIC and thus be subject to corporate-level income tax. See “Material U.S. Federal Income Tax Considerations — Taxation as a RIC.”

Regulations governing our operation as a business development company affect our ability to, and the way in which we, raise additional capital. As a business development company, the necessity of raising additional capital exposes us to risks, including the typical risks associated with leverage.

We may issue debt securities or preferred stock and/or borrow money from banks or other financial institutions, which we refer to collectively as “senior securities,” up to the maximum amount permitted by the 1940 Act. Under the provisions of the 1940 Act, we are permitted as a business development company to issue senior securities in amounts such that our asset coverage, as defined in the 1940 Act, equals at least 200% of gross assets (other than the U.S. Small Business Administration, or SBA, debentures of a small business investment company, or SBIC, subsidiary, as permitted by exemptive relief we have been granted by the SEC) less all liabilities and indebtedness not represented by senior securities, after each issuance of senior securities (other than the SBA debentures of an SBIC subsidiary, as permitted by exemptive relief we have been granted by the SEC). If the value of our assets declines, we may be unable to satisfy this ratio. If that happens, we may be required to sell a portion of our investments and, depending on the nature of our leverage, repay a portion of our indebtedness at a time when such sales may be disadvantageous. Also, any amounts that we use to service our indebtedness would not be available for distributions to our common stockholders. If we issue senior securities, we will be exposed to typical risks associated with leverage,

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including an increased risk of loss. As of December 31, 2013, we had $591.6 million of outstanding borrowings, including $215.0 million outstanding under the Debt Securitization.

In the absence of an event of default, no person or entity from which we borrow money has a veto right or voting power over our ability to set policy, make investment decisions or adopt investment strategies. If we issue preferred stock, which is another form of leverage, the preferred stock would rank “senior” to common stock in our capital structure, preferred stockholders would have separate voting rights on certain matters and might have other rights, preferences or privileges more favorable than those of our common stockholders, and the issuance of preferred stock could have the effect of delaying, deferring or preventing a transaction or a change of control that might involve a premium price for holders of our common stock or otherwise be in your best interest. Holders of our common stock will directly or indirectly bear all of the costs associated with offering and servicing any preferred stock that we issue. In addition, any interests of preferred stockholders may not necessarily align with the interests of holders of our common stock and the rights of holders of shares of preferred stock to receive dividends would be senior to those of holders of shares of our common stock. We do not, however, anticipate issuing preferred stock in the next 12 months.

We are not generally able to issue and sell our common stock at a price below net asset value per share. We may, however, sell our common stock, or warrants, options or rights to acquire our common stock, at a price below the then-current net asset value per share of our common stock if our board of directors determines that such sale is in the best interests of us and our stockholders, and if our stockholders approve such sale. In any such case, the price at which our securities are to be issued and sold may not be less than a price that, in the determination of our board of directors, closely approximates the market value of such securities (less any distributing commission or discount). If we raise additional funds by issuing common stock or senior securities convertible into, or exchangeable for, our common stock, then the percentage ownership of our stockholders at that time will decrease, and you might experience dilution.

We intend to finance our investments with borrowed money, which will magnify the potential for gain or loss on amounts invested and may increase the risk of investing in us.

The use of leverage magnifies the potential for gain or loss on amounts invested. The use of leverage is generally considered a speculative investment technique and increases the risks associated with investing in our securities. We may issue senior debt securities to banks, insurance companies and other lenders. Lenders of these senior securities will have fixed dollar claims on our assets that are superior to the claims of our common stockholders, and we would expect such lenders to seek recovery against our assets in the event of a default. We may pledge up to 100% of our assets and may grant a security interest in all of our assets under the terms of any debt instruments we may enter into with lenders. In addition, under the terms of any credit facility or other debt instrument we enter into, we are likely to be required by its terms to use the net proceeds of any investments that we sell to repay a portion of the amount borrowed under such facility or instrument before applying such net proceeds to any other uses. If the value of our assets decreases, leveraging would cause our net asset value to decline more sharply than it otherwise would have had we not leveraged, thereby magnifying losses or eliminating our equity stake in a leveraged investment. Similarly, any decrease in our revenue or income will cause our net income to decline more sharply than it would have had we not borrowed. Such a decline would also negatively affect our ability to make distributions on our common stock or any outstanding preferred stock. Our ability to service our debt depends largely on our financial performance and is subject to prevailing economic conditions and competitive pressures. Our common stockholders bear the burden of any increase in our expenses as a result of our use of leverage, including interest expenses and any increase in the base management fee payable to GC Advisors.

As a business development company, we generally are required to meet a coverage ratio of total assets to total borrowings and other senior securities, which include the Class A Notes and Class B Notes issued by the Securitization Issuer, our other borrowings (other than the SBA debentures of an SBIC subsidiary, as permitted by exemptive relief we have been granted by the SEC) and any preferred stock that we may issue in the future, of at least 200%. If this ratio declines below 200%, we cannot incur additional debt and could be required to sell a portion of our investments to repay some debt when it is disadvantageous to do so. This could have a material adverse effect on our operations, and we may not be able to make distributions in amounts sufficient to maintain our status as a RIC, or at all. The amount of leverage that we employ will

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depend on GC Advisors’ and our board of directors’ assessment of market and other factors at the time of any proposed borrowing. We cannot assure you that we will be able to obtain credit at all or on terms acceptable to us.

On September 13, 2011, we received exemptive relief from the SEC allowing us to modify the asset coverage requirement to exclude the SBA debentures from this calculation. As such, our ratio of total consolidated assets to outstanding indebtedness may be less than 200%. This provides us with increased investment flexibility but also increases our risks related to leverage.

The following table illustrates the effect of leverage on returns from an investment in our common stock as of December 31, 2013, assuming various annual returns, net of expenses. The calculations in the table below are hypothetical and actual returns may be higher or lower than those appearing in the table below.

		Assumed Return on Our Portfolio (Net of Expenses)
		-10%				-5%				0%				5%				10%
Corresponding return to common stockholder(1)			-22	%			-12	%			-2	%			7	%			17	%

Based on our outstanding indebtedness of $591.6 million as of December 31, 2013 and the effective annual interest rate of 2.73% as of that date, our investment portfolio would have been required to experience an annual return of at least 1.28% to cover annual interest payments on the outstanding debt.

We are subject to risks associated with the Debt Securitization.

As a result of the Debt Securitization, we are subject to a variety of risks, including those set forth below. We use the term “debt securitization” in this prospectus to describe a form of secured borrowing under which an operating company (sometimes referred to as an “originator” or “sponsor”) acquires or originates mortgages, receivables, loans or other assets that earn income, whether on a one-time or recurring basis (collectively, “income producing assets”), and borrows money on a non-recourse basis against a legally separate pool of loans or other income producing assets. In a typical debt securitization, the originator transfers the loans or income producing assets to a single-purpose, bankruptcy-remote subsidiary (also referred to as a “special purpose entity”), which is established solely for the purpose of holding loans and income producing assets and issuing debt secured by these income producing assets. The special purpose entity completes the borrowing through the issuance of notes secured by the loans or other assets. The special purpose entity may issue the notes in the capital markets to a variety of investors, including banks, non-bank financial institutions and other investors. In the Debt Securitization, an institutional investor purchased the notes issued by the Securitization Issuer in a private placement.

We are subject to certain risks as a result of our indirect interests in the Subordinated Notes and membership interests of the Securitization Issuer.

Under the terms of the master loan sale agreement governing the Debt Securitization, (1) we sold and/or contributed to Holdings all of our ownership interest in our portfolio loans and participations for the purchase price and other consideration set forth in the master loan sale agreement and (2) Holdings, in turn, sold and/or contributed to the Securitization Issuer all of its ownership interest in such portfolio loans and participations for the purchase price and other consideration set forth in the master loan sale agreement. Following these transfers, the Securitization Issuer, and not Holdings or us, held all of the ownership interest in such portfolio loans and participations. As a result of the Debt Securitization, as of December 31, 2013, we held indirectly through Holdings the Subordinated Notes as well as membership interests, which comprise 100% of the equity interests, in the Securitization Issuer. As a result, we consolidate the financial statements of Holdings and the Securitization Issuer, as well as our other subsidiaries, in our consolidated financial statements. Because each of Holdings and the Securitization Issuer is disregarded as an entity separate from its owner for U.S. federal income tax purposes, the sale or contribution by us to Holdings, and by Holdings to the Securitization Issuer, did not constitute a taxable event for U.S. federal income tax purposes. If the U.S. Internal Revenue Service were to take a contrary position, there could be a material adverse effect on our business, financial condition,

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results of operations or cash flows. The securities issued by the Securitization Issuer, or by any securitization vehicle we sponsor in the future, could be acquired by another business development company or securitization vehicle subject to the satisfaction of certain conditions. We may also, from time to time, hold asset-backed securities, or the economic equivalent thereof, issued by a securitization vehicle sponsored by another business development company to the extent permitted under the 1940 Act.

The Subordinated Notes and membership interests in the Securitization Issuer are subordinated obligations of the Securitization Issuer.

The Subordinated Notes are the most junior class of notes issued by the Securitization Issuer, are subordinated in priority of payment to every other class of notes issued by the Securitization Issuer and are subject to certain payment restrictions set forth in the indenture governing the notes. Therefore, Holdings only receives cash distributions on the Subordinated Notes if the Securitization Issuer has made all cash interest payments to all other notes it has issued, and we only receive cash distributions in respect of our indirect ownership of the Securitization Issuer to the extent that Holdings receives any cash distributions in respect of its direct ownership of the Securitization Issuer. The Subordinated Notes are also unsecured and rank behind all of the secured creditors, known or unknown, of the Securitization Issuer, including the holders of the senior notes it has issued. Consequently, to the extent that the value of the Securitization Issuer’s portfolio of loan investments has been reduced as a result of conditions in the credit markets, or as a result of defaulted loans or individual fund assets, the value of the Subordinated Notes at their redemption could be reduced.

The membership interests in the Securitization Issuer represent all of the equity interest in the Securitization Issuer. As such, the holder of the membership interests is the residual claimant on distributions, if any, made by the Securitization Issuer after holders of all classes of notes issued by the Securitization Issuer have been paid in full on each payment date or upon maturity of such notes under the Debt Securitization documents. Such payments may be made by the Securitization Issuer only to the extent permitted under the Debt Securitization documents on any payment date or upon payment in full of the notes issued by the Securitization Issuer.

The interests of holders of the senior classes of securities issued by the Securitization Issuer may not be aligned with our interests.

The Class A Notes are the debt obligations ranking senior in right of payment to other securities issued by the Securitization Issuer in the Debt Securitization. As such, there are circumstances in which the interests of holders of the Class A Notes may not be aligned with the interests of holders of the other classes of notes issued by, and membership interests of, the Securitization Issuer. For example, under the terms of the Class A Notes, holders of the Class A Notes have the right to receive payments of principal and interest prior to holders of the Class B Notes, the Subordinated Notes and the membership interests.

For as long as the Class A Notes remain outstanding, holders of the Class A Notes comprise the Controlling Class under the Debt Securitization and, as such, they have the right to act in certain circumstances with respect to the portfolio loans in ways that may benefit their interests but not the interests of holders of more junior classes of notes and membership interests, including by exercising remedies under the indenture in the Debt Securitization. If the Class A Notes are paid in full, the Class B Notes would comprise the Controlling Class.

If an event of default has occurred and acceleration occurs in accordance with the terms of the indenture, the Controlling Class, as the most senior class of notes then outstanding will be paid in full before any further payment or distribution on the more junior classes of notes and membership interests. In addition, if an event of default occurs, holders of a majority of the Controlling Class will be entitled to determine the remedies to be exercised under the indenture, subject to the terms of the indenture. For example, upon the occurrence of an event of default with respect to the notes issued by the Securitization Issuer, the trustee or holders of a majority of the Controlling Class may declare the principal, together with any accrued interest, of all the notes of such class and any junior classes to be immediately due and payable. This would have the effect of accelerating the principal on such notes, triggering a repayment obligation on the part of the Securitization Issuer. If at such time the portfolio loans were not performing well, the Securitization Issuer may not have sufficient proceeds available to enable the trustee under the indenture to repay the obligations of holders of the Class B Notes or the Subordinated Notes, or to pay a dividend to holders of the membership interests.

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Remedies pursued by the Controlling Class could be adverse to the interests of the holders of the notes that are subordinated to the Controlling Class (which would include the Class B Notes and Subordinated Notes to the extent the Class A Notes constitute the Controlling Class or the Subordinated Notes, to the extent the Class B Notes constitute the Controlling Class), and the Controlling Class will have no obligation to consider any possible adverse effect on such other interests. Thus, we cannot assure you that any remedies pursued by the Controlling Class will be in the best interests of Holdings or that Holdings will receive any payments or distributions upon an acceleration of the notes. Any failure of the Securitization Issuer to make distributions on the notes we indirectly hold, whether as a result of an event of default or otherwise, could have a material adverse effect on our business, financial condition, results of operations and cash flows and may result in an inability of us to make distributions sufficient to maintain our status as a RIC.

The Securitization Issuer may fail to meet certain asset coverage tests.

Under the documents governing the Debt Securitization, there are two asset coverage tests applicable to the Class A Notes and Class B Notes. The first such test compares the amount of interest received on the portfolio loans held by the Securitization Issuer to the amount of interest payable in respect of the Class A Notes and Class B Notes. To meet this first test, interest received on the portfolio loans must equal at least 115% of the interest payable in respect of the Class A Notes and Class B Notes. The second such test compares the principal amount of the portfolio loans to the aggregate outstanding principal amount of the Class A Notes and Class B Notes. To meet this second test at any time, the aggregate principal amount of the portfolio loans must equal at least 158% of the outstanding principal amount of the Class A Notes and the Class B Notes, taken together. If either coverage test is not satisfied, interest and principal received by the Securitization Issuer are diverted on the following payment date to pay the Class A Notes in full and then the Class B Notes in full (in order of seniority) to the extent necessary to cause all coverage tests to be satisfied on a pro forma basis after giving effect to all payments made in respect of the notes, which we refer to as a mandatory redemption. If any asset coverage test with respect to the Class A Notes or Class B Notes is not met, proceeds from the portfolio of loan investments that otherwise would have been distributed to the Securitization Issuer and the holders of the Subordinated Notes will instead be used to redeem first the Class A Notes and then the Class B Notes, to the extent necessary to satisfy the applicable asset coverage tests or to obtain the necessary ratings confirmation.

The value of the Class B Notes could be adversely affected by a mandatory redemption because such redemption could result in the Class B Notes being redeemed at par at a time when they are trading in the secondary market at a premium to their stated principal amount and when other investments bearing the same rate of interest may be difficult or expensive to acquire. A mandatory redemption could also result in a shorter investment duration than a holder of Class B Notes may have wanted or anticipated, which could, in turn, result in such a holder incurring breakage costs on related hedging transactions. In addition, the reinvestment period under the Debt Securitization may extend through as late as July 20, 2015, which could affect the value of the collateral securing the Class B Notes.

We may not receive cash from the Securitization Issuer.

We receive cash from the Securitization Issuer only to the extent that Holdings receives payments on the Subordinated Notes or membership interests. The Securitization Issuer may only make payments on such securities to the extent permitted by the payment priority provisions of the indenture governing the notes, which generally provides that principal payments on the Subordinated Notes may not be made on any payment date unless all amounts owing under the Class A Notes and Class B Notes are paid in full. In addition, if the Securitization Issuer does not meet the asset coverage tests or the interest coverage test set forth in the documents governing the Debt Securitization, cash would be diverted from the Class B Notes and the Subordinated Notes to first pay the Class A Notes in amounts sufficient to cause such tests to be satisfied. In the event that we fail to indirectly receive cash from the Securitization Issuer, we could be unable to make such distributions in amounts sufficient to maintain our status as a RIC, or at all.

We may be required to assume liabilities of the Securitization Issuer.

As part of the Debt Securitization, we entered into a master loan sale agreement under which we would be required to repurchase any loan (or participation interest therein) which was sold to the Securitization Issuer in breach of any representation or warranty made by us with respect to such loan on the date such loan

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was sold. To the extent we fail to satisfy any such repurchase obligation, the trustee may, on behalf of the Securitization Issuer, bring an action against us to enforce these repurchase obligations.

The structure of the Debt Securitization is intended to prevent, in the event of our bankruptcy or the bankruptcy of Holdings, the consolidation of the Securitization Issuer with our operations or those of Holdings. If the true sale of these assets were not respected in the event of our insolvency, a trustee or debtor-in-possession might reclaim the assets of the Securitization Issuer for our estate. However, in doing so, we would become directly liable for all of the indebtedness then outstanding under the Debt Securitization, which would equal the full amount of debt of the Securitization Issuer reflected on our consolidated balance sheet. In addition, we cannot assure you that the recovery in the event we were consolidated with the Securitization Issuer for purposes of any bankruptcy proceeding would exceed the amount to which we would otherwise be entitled as an indirect holder of the Class B Notes and the Subordinated Notes had we not been consolidated with the Securitization Issuer.

In addition, in connection with the Debt Securitization, we indirectly gave the lenders certain customary representations with respect to the legal structure of the Securitization Issuer and the quality of the assets transferred to it. We remain indirectly liable for any incorrect statements or omissions for a period of at least one year, and potentially for the life of the Debt Securitization.

The Securitization Issuer may issue additional Subordinated Notes.

Under the terms of the Debt Securitization documents, the Securitization Issuer could issue additional Subordinated Notes and use the net proceeds of such issuance to purchase additional portfolio loans. Any such additional issuance, however, would require the consent of the collateral manager and the approval of a majority of the Subordinated Notes. Among the other conditions that must be satisfied in connection with an additional issuance of Subordinated Notes, the aggregate principal amount of all additional issuances of Subordinated Notes may not exceed $97 million; the Securitization Issuer must notify each rating agency of such issuance prior to the issuance date; and the terms of the Subordinated Notes to be issued must be identical to the terms of previously issued Subordinated Notes (except that all monies due on such additional Subordinated Notes will accrue from the issue date of such notes and that the prices of such Subordinated Notes do not have to be identical to those of the initial Subordinated Notes). We do not expect to cause the Securitization Issuer to issue any additional Subordinated Notes at this time, and the terms of the Debt Securitization documents do not provide for additional issuances of Class A Notes or Class B Notes without amendment of the Debt Securitization documents.

We are subject to risks associated with the Credit Facility and the Revolver.

On July 21, 2011, Funding, our wholly-owned subsidiary, entered into the Credit Facility with Wells Fargo Securities LLC, as administrative agent, and Wells Fargo Bank, N.A., as lender, or the Lender. On November 22, 2013, Revolver Funding, our wholly-owned subsidiary, entered into the Revolver with PrivateBank. As a result of the Credit Facility and the Revolver, we are subject to a variety of risks, including those set forth below.

Our interests in Funding and Revolver Funding are subordinated.

We own 100% of the equity interests in each of Funding and Revolver Funding, respectively. We consolidate the financial statements of both Funding and Revolver Funding in our consolidated financial statements and treat the indebtedness of Funding and Revolver Funding as our leverage. Our interests in each of Funding and Revolver Funding, respectively, are subordinated in priority of payment to every other obligation of Funding and Revolver Funding, respectively, and are subject to certain payment restrictions set forth in the Credit Facility and the Revolver. We receive cash distributions on our equity interests in Funding and Revolver Funding only if Funding and Revolver Funding, respectively, have made all required cash interest payments to their respective lenders. We cannot assure you that distributions on the assets held by Funding or Revolver Funding will be sufficient to make any distributions to us or that such distributions will meet our expectations.

Our equity interests in Funding and Revolver Funding, respectively, rank behind all of the secured and unsecured creditors, known or unknown, of Funding and Revolver Funding, respectively, including their

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respective lenders. Consequently, to the extent that the value of Funding’s or Revolver Funding’s respective portfolios of loan investments have been reduced as a result of conditions in the credit markets, defaulted loans, capital gains and losses on the underlying assets, prepayment or changes in interest rates, the return on our investment in Funding and Revolver Funding, respectively, could be reduced. Accordingly, our investment in Funding and Revolver Funding, respectively, may be subject to up to 100% loss.

We may not receive cash on our equity interests from Funding or Revolver Funding.

We receive cash from Funding and Revolver Funding, respectively, only to the extent that we receive distributions on our equity interests in Funding and Revolver Funding, respectively. Funding and Revolver Funding each may make payments on such interests only to the extent permitted by the payment priority provisions of the Credit Facility and the Revolver, respectively. The Credit Facility and Revolver each generally provide that payments on such interests may not be made on any payment date unless all amounts owing to the respective lenders and other secured parties are paid in full. In addition, if either Funding or Revolver Funding does not meet its respective asset coverage tests or the interest coverage tests set forth in the Credit Facility and Revolver documents, respectively, cash would be diverted from us to first pay the Lender or PrivateBank, as applicable, in amounts sufficient to cause such tests to be satisfied. In the event that we fail to receive cash from Funding or Revolver Funding, we could be unable to make distributions to our stockholders in amounts sufficient to maintain our status as a RIC, or at all. We also could be forced to sell investments in portfolio companies at less than their fair value in order to continue making such distributions.

The ability to sell investments held by each of Funding and Revolver Funding is limited.

Each of the Credit Facility and Revolver places significant restrictions on our ability, as servicer, to sell investments. As a result, there may be times or circumstances during which we are unable to sell investments or take other actions that might be in our best interests.

Our ability to invest in public companies may be limited in certain circumstances.

To maintain our status as a business development company, we are not permitted to acquire any assets other than “qualifying assets” specified in the 1940 Act unless, at the time the acquisition is made, at least 70% of our total assets are qualifying assets (with certain limited exceptions). Subject to certain exceptions for follow-on investments and investments in distressed companies, an investment in an issuer that has outstanding securities listed on a national securities exchange may be treated as qualifying assets only if such issuer has a common equity market capitalization that is less than $250 million at the time of such investment.

To the extent we use debt to finance our investments, changes in interest rates will affect our cost of capital and net investment income.

To the extent we borrow money to make investments, our net investment income depends, in part, upon the difference between the rate at which we borrow funds and the rate at which we invest those funds. As a result, we can offer no assurance that a significant change in market interest rates will not have a material adverse effect on our net investment income in the event we continue to use debt to finance our investments. In periods of rising interest rates, our cost of funds will increase because the interest rates on the Class A Notes and Class B Notes issued under the Debt Securitization and amounts borrowed under the Credit Facility are floating, which could reduce our net investment income to the extent any debt investments have fixed interest rates. We expect that our long-term fixed-rate investments will be financed primarily with issuances of equity and long-term debt securities. We may use interest rate risk management techniques in an effort to limit our exposure to interest rate fluctuations. Such techniques may include various interest rate hedging activities to the extent permitted by the 1940 Act and applicable commodities laws.

You should also be aware that a rise in the general level of interest rates typically will lead to higher interest rates applicable to our debt investments. Accordingly, an increase in interest rates may result in an increase of the amount of incentive fees payable to GC Advisors.

We may enter into reverse repurchase agreements, which are another form of leverage.

We may enter into reverse repurchase agreements as part of our management of our temporary investment portfolio. Under a reverse repurchase agreement, we will effectively pledge our assets as collateral

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to secure a short-term loan. Generally, the other party to the agreement makes the loan in an amount equal to a percentage of the fair value of the pledged collateral. At the maturity of the reverse repurchase agreement, we will be required to repay the loan and correspondingly receive back our collateral. While used as collateral, the assets continue to pay principal and interest which are for the benefit of us.

Our use of reverse repurchase agreements, if any, involves many of the same risks involved in our use of leverage, as the proceeds from reverse repurchase agreements generally will be invested in additional securities. There is a risk that the market value of the securities acquired in the reverse repurchase agreement may decline below the price of the securities that we have sold but remain obligated to purchase. In addition, there is a risk that the market value of the securities retained by us may decline. If a buyer of securities under a reverse repurchase agreement were to file for bankruptcy or experience insolvency, we may be adversely affected. Also, in entering into reverse repurchase agreements, we would bear the risk of loss to the extent that the proceeds of such agreements at settlement are less than the fair value of the underlying securities being pledged. In addition, due to the interest costs associated with reverse repurchase agreements, our net asset value would decline, and, in some cases, we may be worse off than if we had not used such agreements.

Adverse developments in the credit markets may impair our ability to enter into new debt financing arrangements.

During the economic downturn in the United States that began in mid-2007, many commercial banks and other financial institutions stopped lending or significantly curtailed their lending activity. In addition, in an effort to stem losses and reduce their exposure to segments of the economy deemed to be high risk, some financial institutions limited routine refinancing and loan modification transactions and even reviewed the terms of existing facilities to identify bases for accelerating the maturity of existing lending facilities. To the extent these circumstances arise again in the future, it may be difficult for us to finance the growth of our investments on acceptable economic terms, or at all.

If we do not invest a sufficient portion of our assets in qualifying assets, we could fail to qualify as a business development company or be precluded from investing according to our current business strategy.

As a business development company, we may not acquire any assets other than “qualifying assets” unless, at the time of and after giving effect to such acquisition, at least 70% of our total assets are qualifying assets. See “Regulation — Qualifying Assets.”

In the future, we believe that most of our investments will constitute qualifying assets. However, we may be precluded from investing in what we believe are attractive investments if such investments are not qualifying assets for purposes of the 1940 Act. If we do not invest a sufficient portion of our assets in qualifying assets, we could violate the 1940 Act provisions applicable to business development companies. As a result of such violation, specific rules under the 1940 Act could prevent us, for example, from making follow-on investments in existing portfolio companies (which could result in the dilution of our position) or could require us to dispose of investments at inappropriate times in order to come into compliance with the 1940 Act. If we need to dispose of such investments quickly, it could be difficult to dispose of such investments on favorable terms. We may not be able to find a buyer for such investments and, even if we do find a buyer, we may have to sell the investments at a substantial loss. Any such outcomes would have a material adverse effect on our business, financial condition, results of operations and cash flows.

If we do not maintain our status as a business development company, we would be subject to regulation as a registered closed-end investment company under the 1940 Act. As a registered closed-end investment company, we would be subject to substantially more regulatory restrictions under the 1940 Act which would significantly decrease our operating flexibility.

Many of our portfolio investments are recorded at fair value as determined in good faith by our board of directors and, as a result, there may be uncertainty as to the value of our portfolio investments.

The majority of our portfolio investments take the form of securities that are not publicly traded. The fair value of securities and other investments that are not publicly traded may not be readily determinable, and we value these securities at fair value as determined in good faith by our board of directors, including to reflect significant events affecting the value of our securities. As discussed in more detail under “Management’s

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Discussion and Analysis of Financial Condition, Results of Operations and Cash Flows — Critical Accounting Policies,” most, if not all, of our investments (other than cash and cash equivalents) are classified as Level 3 under Accounting Standards Codification, or ASC, Topic 820, Fair Value Measurement. This means that our portfolio valuations are based on unobservable inputs and our own assumptions about how market participants would price the asset or liability in question. Inputs into the determination of fair value of our portfolio investments require significant management judgment or estimation. Even if observable market data are available, such information may be the result of consensus pricing information or broker quotes, which may include a disclaimer that the broker would not be held to such a price in an actual transaction. The non-binding nature of consensus pricing and/or quotes accompanied by disclaimers materially reduces the reliability of such information. We have retained the services of several independent service providers to review the valuation of these securities. The types of factors that the board of directors may take into account in determining the fair value of our investments generally include, as appropriate, comparison to publicly traded securities including such factors as yield, maturity and measures of credit quality, the enterprise value of a portfolio company, the nature and realizable value of any collateral, the portfolio company’s ability to make payments and its earnings and discounted cash flow, the markets in which the portfolio company does business and other relevant factors. Because such valuations, and particularly valuations of private securities and private companies, are inherently uncertain, may fluctuate over short periods of time and may be based on estimates, our determinations of fair value may differ materially from the values that would have been used if a ready market for these securities existed. Our net asset value could be adversely affected if our determinations regarding the fair value of our investments were materially higher than the values that we ultimately realize upon the disposal of such securities.

We adjust quarterly the valuation of our portfolio to reflect our board of directors’ determination of the fair value of each investment in our portfolio. Any changes in fair value are recorded in our consolidated statement of operations as net change in unrealized appreciation or depreciation.

We may experience fluctuations in our quarterly operating results.

We could experience fluctuations in our quarterly operating results due to a number of factors, including the interest rate payable on the debt securities we acquire, the default rate on such securities, the level of our expenses, variations in and the timing of the recognition of realized and unrealized gains or losses, the degree to which we encounter competition in our markets and general economic conditions. In light of these factors, results for any period should not be relied upon as being indicative of our performance in future periods.

New or modified laws or regulations governing our operations may adversely affect our business.

We and our portfolio companies are subject to regulation by laws at the U.S. federal, state and local levels. These laws and regulations, as well as their interpretation, may change from time to time, and new laws, regulations and interpretations may also come into effect. Any such new or changed laws or regulations could have a material adverse effect on our business. In particular, on July 21, 2010, the Dodd-Frank Wall Street Reform and Consumer Protection Act, or Dodd-Frank, became law. The scope of Dodd-Frank impacts many aspects of the financial services industry, and it requires the development and adoption of many implementing regulations over the next several months and years. The effects of Dodd-Frank on the financial services industry will depend, in large part, upon the extent to which regulators exercise the authority granted to them and the approaches taken in implementing regulations. The likely impact of Dodd-Frank cannot be ascertained with any degree of certainty.

Additionally, changes to the laws and regulations governing our operations, including those associated with RICs, may cause us to alter our investment strategy in order to avail ourselves of new or different opportunities or result in the imposition of corporate-level taxes on us. Such changes could result in material differences to our strategies and plans and may shift our investment focus from the areas of expertise of GC Advisors to other types of investments in which GC Advisors may have little or no expertise or experience. Any such changes, if they occur, could have a material adverse effect on our results of operations and the value of your investment. If we invest in commodity interests in the future, GC Advisors may determine not to use investment strategies that trigger additional Commodities Futures Trading Commission,

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or CFTC, regulation or may determine to operate subject to CFTC regulation, if applicable. If we or GC Advisors were to operate subject to CFTC regulation, we may incur additional expenses and would be subject to additional regulation.

Our board of directors may change our investment objective, operating policies and strategies without prior notice or stockholder approval.

Our board of directors has the authority, except as otherwise provided in the 1940 Act, to modify or waive our investment objective and certain of our operating policies and strategies without prior notice and without stockholder approval. However, absent stockholder approval, we may not change the nature of our business so as to cease to be, or withdraw our election as, a business development company. Under Delaware law, we also cannot be dissolved without prior stockholder approval. We cannot predict the effect any changes to our current investment objective, operating policies and strategies would have on our business, operating results and the price value of our common stock. Nevertheless, any such changes could adversely affect our business and impair our ability to make distributions.

Provisions of the General Corporation Law of the State of Delaware and our certificate of incorporation and bylaws could deter takeover attempts and have an adverse effect on the price of our securities.

The General Corporation Law of the State of Delaware, or the DGCL, contains provisions that may discourage, delay or make more difficult a change in control of us or the removal of our directors. Our certificate of incorporation and bylaws contain provisions that limit liability and provide for indemnification of our directors and officers. These provisions and others also may have the effect of deterring hostile takeovers or delaying changes in control or management. We are subject to Section 203 of the DGCL, the application of which is subject to any applicable requirements of the 1940 Act. This section generally prohibits us from engaging in mergers and other business combinations with stockholders that beneficially own 15% or more of our voting stock, or with their affiliates, unless our directors or stockholders approve the business combination in the prescribed manner. If our board of directors does not approve a business combination, Section 203 of the DGCL may discourage third parties from trying to acquire control of us and increase the difficulty of consummating such an offer.

We have also adopted measures that may make it difficult for a third party to obtain control of us, including provisions of our certificate of incorporation classifying our board of directors in three classes serving staggered three-year terms, and provisions of our certificate of incorporation authorizing our board of directors to classify or reclassify shares of our preferred stock in one or more classes or series, to cause the issuance of additional shares of our stock, and to amend our certificate of incorporation, without stockholder approval, to increase or decrease the number of shares of stock that we have authority to issue. These provisions, as well as other provisions of our certificate of incorporation and bylaws, may delay, defer or prevent a transaction or a change in control that might otherwise be in the best interests of our securityholders.

GC Advisors can resign on 60 days’ notice, and we may not be able to find a suitable replacement within that time, resulting in a disruption in our operations that could adversely affect our financial condition, business and results of operations.

GC Advisors has the right to resign under the Investment Advisory Agreement at any time upon not less than 60 days’ written notice, whether we have found a replacement or not. If GC Advisors resigns, we may not be able to find a new investment adviser or hire internal management with similar expertise and ability to provide the same or equivalent services on acceptable terms within 60 days, or at all. If we are unable to do so quickly, our operations are likely to experience a disruption, our financial condition, business and results of operations as well as our ability to pay distributions are likely to be adversely affected and the market price of our shares may decline. In addition, the coordination of our internal management and investment activities is likely to suffer if we are unable to identify and reach an agreement with a single institution or group of executives having the expertise possessed by GC Advisors and its affiliates. Even if we are able to retain comparable management, whether internal or external, the integration of such management and their lack of familiarity with our investment objective may result in additional costs and time delays that may adversely affect our business, financial condition, results of operations and cash flows.

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The Administrator can resign on 60 days’ notice, and we may not be able to find a suitable replacement, resulting in a disruption in our operations that could adversely affect our financial condition, business and results of operations.

The Administrator has the right to resign under the Administration Agreement at any time upon not less than 60 days’ written notice, whether we have found a replacement or not. If the Administrator resigns, we may not be able to find a new administrator or hire internal management with similar expertise and ability to provide the same or equivalent services on acceptable terms, or at all. If we are unable to do so quickly, our operations are likely to experience a disruption, our financial condition, business and results of operations as well as our ability to pay distributions are likely to be adversely affected and the market price of our shares may decline. In addition, the coordination of our internal management and administrative activities is likely to suffer if we are unable to identify and reach an agreement with a service provider or individuals with the expertise possessed by the Administrator. Even if we are able to retain a comparable service provider or individuals to perform such services, whether internal or external, their integration into our business and lack of familiarity with our investment objective may result in additional costs and time delays that may adversely affect our business, financial condition, results of operations and cash flows.

We incur significant costs as a result of being a publicly traded company.

As a publicly traded company, we incur legal, accounting and other expenses, including costs associated with the periodic reporting requirements applicable to a company whose securities are registered under the Exchange Act, as well as additional corporate governance requirements, including requirements under the Sarbanes-Oxley Act of 2002, or the Sarbanes-Oxley Act, and other rules implemented by the SEC.

Our compliance with Section 404 of the Sarbanes-Oxley Act involves significant expenditures, and non-compliance with Section 404 of the Sarbanes-Oxley Act would adversely affect us and the market price of our common stock.

Under current SEC rules, we are required to report on our internal control over financial reporting pursuant to Section 404 of the Sarbanes-Oxley Act and related rules and regulations of the SEC. As a result, we incur expenses that may negatively impact our financial performance and our ability to make distributions. This process also results in a diversion of management’s time and attention. We cannot ensure that our evaluation, testing and remediation process is effective or that our internal control over financial reporting will be effective. In the event that we are unable to maintain compliance with Section 404 of the Sarbanes-Oxley Act and related rules, we and the market price of our securities would be adversely affected.

We are highly dependent on information systems and systems failures could significantly disrupt our business, which may, in turn, negatively affect the market price of our common stock and our ability to pay dividends and other distributions.

Our business depends on the communications and information systems of GC Advisors and its affiliates. Any failure or interruption of such systems could cause delays or other problems in our activities. This, in turn, could have a material adverse effect on our operating results and negatively affect the market price of our securities and our ability to pay dividends and other distributions to our securityholders.

Risks Relating to Our Investments

Economic recessions or downturns could impair our portfolio companies and harm our operating results.

Many of our portfolio companies are susceptible to economic slowdowns or recessions and may be unable to repay our loans during these periods. Therefore, our non-performing assets are likely to increase and the value of our portfolio is likely to decrease during these periods. Adverse economic conditions may decrease the value of collateral securing some of our loans and the value of our equity investments. Economic slowdowns or recessions could lead to financial losses in our portfolio and a decrease in revenues, net income and assets. Unfavorable economic conditions also could increase our funding costs, limit our access to the capital markets or result in a decision by lenders not to extend credit to us. These events could prevent us from increasing our investments and harm our operating results.

A portfolio company’s failure to satisfy financial or operating covenants imposed by us or other lenders could lead to defaults and, potentially, termination of its loans and foreclosure on its assets, which could

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trigger cross-defaults under other agreements and jeopardize our portfolio company’s ability to meet its obligations under the debt securities that we hold. We may incur expenses to the extent necessary to seek recovery upon default or to negotiate new terms with a defaulting portfolio company. In addition, lenders in certain cases can be subject to lender liability claims for actions taken by them when they become too involved in the borrower’s business or exercise control over a borrower. It is possible that we could become subject to a lender’s liability claim, including as a result of actions taken if we render significant managerial assistance to the borrower. Furthermore, if one of our portfolio companies were to file for bankruptcy protection, even though we may have structured our investment as senior secured debt, depending on the facts and circumstances, including the extent to which we provided managerial assistance to that portfolio company, a bankruptcy court might re-characterize our debt holding and subordinate all or a portion of our claim to claims of other creditors.

Global capital markets could enter a period of severe disruption and instability. These conditions have historically affected and could again materially and adversely affect debt and equity capital markets in the United States and around the world and our business.

The U.S. and global capital markets experienced extreme volatility and disruption during the economic downturn that began in mid-2007, and the U.S. economy was in a recession for several consecutive calendar quarters during the same period. This economic decline materially and adversely affected the broader financial and credit markets and has reduced the availability of debt and equity capital for the market as a whole and to financial firms, in particular. At various times, these disruptions resulted in a lack of liquidity in parts of the debt capital markets, significant write-offs in the financial services sector relating to subprime mortgages and the repricing of credit risk in the broadly syndicated market. These disruptions in the capital markets also increased the spread between the yields realized on risk-free and higher risk securities and reduced the availability of debt and equity capital for the market as a whole and financial services firms in particular. These conditions may reoccur for a prolonged period of time again or materially worsen in the future, including as a result of the U.S. government spending cuts that took effect March 1, 2013, the recent government shutdown in October 2013, or any further spending cuts or shutdowns. Unfavorable economic conditions, including future recessions, also could increase our funding costs, limit our access to the capital markets or result in a decision by lenders not to extend credit to us. We may in the future have difficulty accessing debt and equity capital on attractive terms, or at all, and a severe disruption and instability in the global financial markets or deteriorations in credit and financing conditions may cause us to reduce the volume of loans we originate and/or fund, adversely affect the value of our portfolio investments or otherwise have a material adverse effect on our business, financial condition, results of operations and cash flows.

Our debt investments may be risky and we could lose all or part of our investment.

The debt that we invest in is typically not initially rated by any rating agency, but we believe that if such investments were rated, they would be below investment grade (rated lower than “Baa3” by Moody's Investors Service, lower than “BBB-” by Fitch Ratings or lower than “BBB-” by Standard & Poor's Ratings Services), which under the guidelines established by these entities is an indication of having predominantly speculative characteristics with respect to the issuer's capacity to pay interest and repay principal. Bonds that are rated below investment grade are sometimes referred to as “high yield bonds” or “junk bonds.” Therefore, our investments may result in an above average amount of risk and volatility or loss of principal. To the extent we make investments with a deferred interest feature such as market discount, debt instruments with PIK interest, preferred stock with PIK dividends and zero coupon securities, the higher interest rates on these investments may reflect the payment deferral and may reflect an increased credit risk associated with such instruments.

Our investments in leveraged portfolio companies may be risky, and you could lose all or part of your investment.

Investment in leveraged companies involves a number of significant risks. Leveraged companies in which we invest may have limited financial resources and may be unable to meet their obligations under their debt securities that we hold. Such developments may be accompanied by a deterioration in the value of any collateral and a reduction in the likelihood of our realizing any guarantees that we may have obtained in

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connection with our investment. Smaller leveraged companies also may have less predictable operating results and may require substantial additional capital to support their operations, finance their expansion or maintain their competitive position.

Our investments in private and middle-market portfolio companies are risky, and you could lose all or part of your investment.

Investment in private and middle market companies involves a number of significant risks. Generally, little public information exists about these companies, and we rely on the ability of GC Advisors’ investment professionals to obtain adequate information to evaluate the potential returns from investing in these companies. If GC Advisors is unable to uncover all material information about these companies, it may not make a fully informed investment decision, and we may lose money on our investments. Middle market companies generally have less predictable operating results and may require substantial additional capital to support their operations, finance expansion or maintain their competitive position. Middle market companies may have limited financial resources, may have difficulty accessing the capital markets to meet future capital needs and may be unable to meet their obligations under their debt securities that we hold, which may be accompanied by a deterioration in the value of any collateral and a reduction in the likelihood of our realizing any guarantees we may have obtained in connection with our investment. In addition, such companies typically have shorter operating histories, narrower product lines and smaller market shares than larger businesses, which tend to render them more vulnerable to competitors’ actions and market conditions, as well as general economic downturns. Additionally, middle market companies are more likely to depend on the management talents and efforts of a small group of persons. Therefore, the death, disability, resignation or termination of one or more of these persons could have a material adverse impact on our portfolio company and, in turn, on us. Middle market companies also may be parties to litigation and may be engaged in rapidly changing businesses with products subject to a substantial risk of obsolescence. In addition, our executive officers, directors and GC Advisors may, in the ordinary course of business, be named as defendants in litigation arising from our investments in the portfolio companies.

The lack of liquidity in our investments may adversely affect our business.

We may invest all of our assets in illiquid securities, and a substantial portion of our investments in leveraged companies are and will be subject to legal and other restrictions on resale or will otherwise be less liquid than more broadly traded public securities. The illiquidity of these investments may make it difficult for us to sell such investments if the need arises. In addition, if we are required to liquidate all or a portion of our portfolio quickly, we may realize significantly less than the value at which we have previously recorded our investments. We may also face other restrictions on our ability to liquidate an investment in a portfolio company to the extent that we, GC Advisors, Golub Capital or any of its affiliates have material nonpublic information regarding such portfolio company.

Price declines and illiquidity in the corporate debt markets may adversely affect the fair value of our portfolio investments, reducing our net asset value through increased net unrealized depreciation.

As a business development company, we are required to carry our investments at market value or, if no market value is ascertainable, at fair value as determined in good faith by our board of directors. As part of the valuation process, we may take into account the following types of factors, if relevant, in determining the fair value of our investments:

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When an external event such as a purchase transaction, public offering or subsequent equity sale occurs, we use the pricing indicated by the external event to corroborate our valuation. We record decreases in the market values or fair values of our investments as unrealized depreciation. Declines in prices and liquidity in the corporate debt markets may result in significant net unrealized depreciation in our portfolio. The effect of all of these factors on our portfolio may reduce our net asset value by increasing net unrealized depreciation in our portfolio. Depending on market conditions, we could incur substantial realized losses and may suffer additional unrealized losses in future periods, which could have a material adverse effect on our business, financial condition, results of operations and cash flows.

Our portfolio companies may prepay loans, which may reduce our yields if capital returned cannot be invested in transactions with equal or greater expected yields.

The loans in our investment portfolio may be prepaid at any time. It is not clear at this time when each loan may be prepaid. Whether a loan is prepaid will depend both on the continued positive performance of the portfolio company and the existence of favorable financing market conditions that allow such company the ability to replace existing financing with less expensive capital. As market conditions change, we do not know when, and if, prepayment may be possible for each portfolio company. In some cases, the prepayment of a loan may reduce our achievable yield if the capital returned cannot be invested in transactions with equal or greater expected yields, which could have a material adverse effect on our business, financial condition and results of operations.

Our portfolio companies may be unable to repay or refinance outstanding principal on their loans at or prior to maturity, and rising interests rates may make it more difficult for portfolio companies to make periodic payments on their loans.

Our portfolio companies may be unable to repay or refinance outstanding principal on their loans at or prior to maturity. This risk and the risk of default is increased to the extent that the loan documents provide for moderate or no loan amortization in the early years of the loan, with all or the majority of the amortization deferred until loan maturity. By deferring amortization until loan maturity, the risk to us may increase because a portfolio company may be unable to satisfy its obligations to us in full at maturity, whether through refinancing, cash on hand or a combination of both. Any failure to collect on a loan in full, whether at maturity or through attempts to foreclose on collateral securing the portfolio’s companies borrowings, could have a material adverse effect on our business, financial condition, results of operations and cash flows. In addition, if general interest rates rise, there is a risk that our portfolio companies will be unable to pay escalating interest amounts, which could result in a default under their loan documents with us. Rising interests rates could also cause portfolio companies to shift cash from other productive uses to the payment of interest, which may have a material adverse effect on their business and operations and could, over time, lead to increased defaults. Any failure of one or more portfolio companies to repay or refinance its debt at or prior to maturity or the inability of one or more portfolio companies to make ongoing payments following an increase in contractual interest rates could have a material adverse effect on our business, financial condition, results of operations and cash flows.

We have not yet identified the portfolio company investments we will acquire.

While we currently hold a portfolio of investments, we have not yet identified additional potential investments for our portfolio that we will acquire with the proceeds of any offering of securities pursuant to this prospectus. Privately negotiated investments in illiquid securities or private middle-market companies require substantial due diligence and structuring, and we cannot assure you that we will achieve our anticipated investment pace. As a result, you will be unable to evaluate any future portfolio company investments prior to purchasing our shares of common stock. Additionally, GC Advisors selects all of our investments, and our stockholders will have no input with respect to such investment decisions. These factors increase the uncertainty, and thus the risk, of investing in our securities.

We anticipate that we will use substantially all of the net proceeds of any offering of our securities within approximately six months following the completion of any offering of our securities, depending on the availability of appropriate investment opportunities consistent with our investment objectives and market conditions. Until such appropriate investment opportunities can be found, we will invest the net proceeds

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primarily in cash, cash equivalents, U.S. government securities and high-quality debt investments that mature in one year or less from the date of investment. We expect these temporary investments to earn yields substantially lower than the income that we expect to receive in respect of investments in senior secured, one stop, second lien and subordinated loans and warrants and minority equity securities. As a result, any distributions we make during this period may be substantially smaller than the distributions that we expect to pay when our portfolio is fully invested.

We are a non-diversified investment company within the meaning of the 1940 Act, and therefore we are not limited with respect to the proportion of our assets that may be invested in securities of a single issuer.

We are classified as a non-diversified investment company within the meaning of the 1940 Act, which means that we are not limited by the 1940 Act with respect to the proportion of our assets that we may invest in securities of a single issuer. To the extent that we assume large positions in the securities of a small number of issuers, our net asset value may fluctuate to a greater extent than that of a diversified investment company as a result of changes in the financial condition or the market’s assessment of the issuer. We may also be more susceptible to any single economic or regulatory occurrence than a diversified investment company. Beyond our asset diversification requirements as a RIC under the Code, we do not have fixed guidelines for diversification, and our investments could be concentrated in relatively few portfolio companies.

Our portfolio may be concentrated in a limited number of portfolio companies and industries, which will subject us to a risk of significant loss if any of these companies defaults on its obligations under any of its debt instruments or if there is a downturn in a particular industry.

Our portfolio may be concentrated in a limited number of portfolio companies and industries. As a result, the aggregate returns we realize may be significantly and adversely affected if a small number of investments perform poorly or if we need to write down the value of any one investment. Additionally, while we are not targeting any specific industries, our investments may be concentrated in relatively few industries. As a result, a downturn in any particular industry in which we are invested could also significantly impact the aggregate returns we realize.

We may hold the debt securities of leveraged companies that may, due to the significant volatility of such companies, enter into bankruptcy proceedings.

Leveraged companies may experience bankruptcy or similar financial distress. The bankruptcy process has a number of significant inherent risks. Many events in a bankruptcy proceeding are the product of contested matters and adversary proceedings and are beyond the control of the creditors. A bankruptcy filing by an issuer may adversely and permanently affect the issuer. If the proceeding is converted to a liquidation, the value of the issuer may not equal the liquidation value that was believed to exist at the time of the investment. The duration of a bankruptcy proceeding is also difficult to predict, and a creditor’s return on investment can be adversely affected by delays until the plan of reorganization or liquidation ultimately becomes effective. The administrative costs of a bankruptcy proceeding are frequently high and would be paid out of the debtor’s estate prior to any return to creditors. Because the standards for classification of claims under bankruptcy law are vague, our influence with respect to the class of securities or other obligations we own may be lost by increases in the number and amount of claims in the same class or by different classification and treatment. In the early stages of the bankruptcy process, it is often difficult to estimate the extent of, or even to identify, any contingent claims that might be made. In addition, certain claims that have priority by law (for example, claims for taxes) may be substantial.

Our failure to make follow-on investments in our portfolio companies could impair the value of our portfolio.

Following an initial investment in a portfolio company, we may make additional investments in that portfolio company as “follow-on” investments, in seeking to:

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We have discretion to make follow-on investments, subject to the availability of capital resources. Failure on our part to make follow-on investments may, in some circumstances, jeopardize the continued viability of a portfolio company and our initial investment, or may result in a missed opportunity for us to increase our participation in a successful portfolio company. Even if we have sufficient capital to make a desired follow-on investment, we may elect not to make a follow-on investment because we may not want to increase our level of risk, because we prefer other opportunities or because of regulatory or other considerations. Our ability to make follow-on investments may also be limited by GC Advisors’ allocation policy.

Because we generally do not hold controlling equity interests in our portfolio companies, we may not be able to exercise control over our portfolio companies or to prevent decisions by management of our portfolio companies that could decrease the value of our investments.

To the extent we do not hold controlling equity positions in our portfolio companies, we are subject to the risk that a portfolio company may make business decisions with which we disagree, and that the management and/or stockholders of a portfolio company may take risks or otherwise act in ways that are adverse to our interests. Due to the lack of liquidity of the debt and equity investments that we typically hold in our portfolio companies, we may not be able to dispose of our investments in the event we disagree with the actions of a portfolio company and may therefore suffer a decrease in the value of our investments.

Defaults by our portfolio companies will harm our operating results.

A portfolio company’s failure to satisfy financial or operating covenants imposed by us or other lenders could lead to defaults and, potentially, termination of its loans and foreclosure on its assets. This could trigger cross-defaults under other agreements and jeopardize such portfolio company’s ability to meet its obligations under the debt or equity securities that we hold. We may incur expenses to the extent necessary to seek recovery upon default or to negotiate new terms, which may include the waiver of certain financial covenants, with a defaulting portfolio company.

Our portfolio companies may incur debt that ranks equally with, or senior to, our investments in such companies.

We have invested a portion of our capital in second lien and subordinated loans issued by our portfolio companies and intend to continue to do so in the future. The portfolio companies usually have, or may be permitted to incur, other debt that ranks equally with, or senior to, the debt securities in which we invest. By their terms, such debt instruments may provide that the holders are entitled to receive payment of interest or principal on or before the dates on which we are entitled to receive payments in respect of the debt securities in which we invest. Also, in the event of insolvency, liquidation, dissolution, reorganization or bankruptcy of a portfolio company, holders of debt instruments ranking senior to our investment in that portfolio company would typically be entitled to receive payment in full before we receive any distribution in respect of our investment. After repaying senior creditors, the portfolio company may not have any remaining assets to use for repaying its obligation to us. In the case of debt ranking equally with debt securities in which we invest, we would have to share any distributions on an equal and ratable basis with other creditors holding such debt in the event of an insolvency, liquidation, dissolution, reorganization or bankruptcy of the relevant portfolio company.

Additionally, certain loans that we make to portfolio companies may be secured on a second priority basis by the same collateral securing senior secured debt of such companies. The first priority liens on the collateral will secure the portfolio company’s obligations under any outstanding senior debt and may secure certain other future debt that may be permitted to be incurred by the portfolio company under the agreements governing the loans. The holders of obligations secured by first priority liens on the collateral will generally control the liquidation of, and be entitled to receive proceeds from, any realization of the collateral to repay their obligations in full before us. In addition, the value of the collateral in the event of liquidation will depend on market and economic conditions, the availability of buyers and other factors. There can be no assurance that the proceeds, if any, from sales of all of the collateral would be sufficient to satisfy the loan obligations secured by the second priority liens after payment in full of all obligations secured by the first

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priority liens on the collateral. If such proceeds were not sufficient to repay amounts outstanding under the loan obligations secured by the second priority liens, then we, to the extent not repaid from the proceeds of the sale of the collateral, will only have an unsecured claim against the portfolio company’s remaining assets, if any.

We have made in the past, and may make in the future, unsecured loans to portfolio companies, meaning that such loans will not benefit from any interest in collateral of such companies. Liens on a portfolio company’s collateral, if any, will secure the portfolio company’s obligations under its outstanding secured debt and may secure certain future debt that is permitted to be incurred by the portfolio company under its secured loan agreements. The holders of obligations secured by such liens will generally control the liquidation of, and be entitled to receive proceeds from, any realization of such collateral to repay their obligations in full before us. In addition, the value of such collateral in the event of liquidation will depend on market and economic conditions, the availability of buyers and other factors. There can be no assurance that the proceeds, if any, from sales of such collateral would be sufficient to satisfy our unsecured loan obligations after payment in full of all secured loan obligations. If such proceeds were not sufficient to repay the outstanding secured loan obligations, then our unsecured claims would rank equally with the unpaid portion of such secured creditors’ claims against the portfolio company’s remaining assets, if any.

The rights we may have with respect to the collateral securing the loans we make to our portfolio companies with senior debt outstanding may also be limited pursuant to the terms of one or more intercreditor agreements that we enter into with the holders of such senior debt. Under a typical intercreditor agreement, at any time that obligations that have the benefit of the first priority liens are outstanding, any of the following actions that may be taken in respect of the collateral will be at the direction of the holders of the obligations secured by the first priority liens:

We may not have the ability to control or direct such actions, even if our rights are adversely affected.

If we make subordinated investments, the obligors or the portfolio companies may not generate sufficient cash flow to service their debt obligations to us.

We may make subordinated investments that rank below other obligations of the obligor in right of payment. Subordinated investments are subject to greater risk of default than senior obligations as a result of adverse changes in the financial condition of the obligor or in general economic conditions. If we make a subordinated investment in a portfolio company, the portfolio company may be highly leveraged, and its relatively high debt-to-equity ratio may create increased risks that its operations might not generate sufficient cash flow to service all of its debt obligations.

The disposition of our investments may result in contingent liabilities.

A significant portion of our investments involve private securities. In connection with the disposition of an investment in private securities, we may be required to make representations about the business and financial affairs of the portfolio company typical of those made in connection with the sale of a business. We may also be required to indemnify the purchasers of such investment to the extent that any such representations turn out to be inaccurate or with respect to potential liabilities. These arrangements may result in contingent liabilities that ultimately result in funding obligations that we must satisfy through our return of distributions previously made to us.

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GC Advisors’ liability is limited, and we have agreed to indemnify GC Advisors against certain liabilities, which may lead GC Advisors to act in a riskier manner on our behalf than it would when acting for its own account.

Under the Investment Advisory Agreement and the collateral management agreement, GC Advisors does not assume any responsibility to us other than to render the services called for under those agreements, and it is not responsible for any action of our board of directors in following or declining to follow GC Advisors’ advice or recommendations. Under the terms of the Investment Advisory Agreement and the collateral management agreement, GC Advisors, its officers, members, personnel, and any person controlling or controlled by GC Advisors are not liable to us, any subsidiary of ours, our directors, our stockholders or any subsidiary’s stockholders or partners for acts or omissions performed in accordance with and pursuant to the Investment Advisory Agreement and the collateral management agreement, except those resulting from acts constituting gross negligence, willful misconduct, bad faith or reckless disregard of GC Advisors’ duties under the Investment Advisory Agreement and the collateral management agreement. In addition, we have agreed to indemnify GC Advisors and each of its officers, directors, members, managers and employees from and against any claims or liabilities, including reasonable legal fees and other expenses reasonably incurred, arising out of or in connection with our business and operations or any action taken or omitted on our behalf pursuant to authority granted by the Investment Advisory Agreement and the collateral management agreement, except where attributable to gross negligence, willful misconduct, bad faith or reckless disregard of such person’s duties under the Investment Advisory Agreement and the collateral management agreement. These protections may lead GC Advisors to act in a riskier manner when acting on our behalf than it would when acting for its own account.

We may be subject to risks under hedging transactions and may become subject to risks if we invest in foreign securities.

Under the 1940 Act, a business development company may not acquire any asset other than assets of the type listed in the 1940 Act, which are referred to as “qualifying assets,” unless, at the time the acquisition is made, qualifying assets represent at least 70% of the company’s total assets. In order for our investments to be classified as “qualifying assets,” among other requirements, such investments must be in issuers organized under the laws of, and which have their principal place of business in, any state of the United States, the District of Columbia, Puerto Rico, the Virgin Islands or any other possession of the United States.

We may invest in non-U.S. companies, including emerging market issuers, to the limited extent such investments are permitted under the 1940 Act. We expect that these investments would focus on the same types of investments that we make in U.S. middle-market companies and accordingly would be complementary to our overall strategy and enhance the diversity of our holdings. Investing in securities of emerging market issuers involves many risks including economic, social, political, financial, tax and security conditions in the emerging market, potential inflationary economic environments, regulation by foreign governments, different accounting standards and political uncertainties. Economic, social, political, financial, tax and security conditions also could negatively affect the value of emerging market companies. These factors could include changes in the emerging market government’s economic and fiscal policies, the possible imposition of, or changes in, currency exchange laws or other laws or restrictions applicable to the emerging market companies or investments in their securities and the possibility of fluctuations in the rate of exchange between currencies.

We have engaged in and, in the future, may engage in hedging transactions to the limited extent such transactions are permitted under the 1940 Act and applicable commodities laws. Engaging in hedging transactions or investing in foreign securities would entail additional risks to our stockholders. We could, for example, use instruments such as interest rate swaps, caps, collars and floors and, if we were to invest in foreign securities, we could use instruments such as forward contracts or currency options and borrow under a credit facility in currencies selected to minimize our foreign currency exposure. In each such case, we generally would seek to hedge against fluctuations of the relative values of our portfolio positions from changes in market interest rates or currency exchange rates. Hedging against a decline in the values of our portfolio positions would not eliminate the possibility of fluctuations in the values of such positions or prevent losses if the values of the positions declined. However, such hedging could establish other positions designed to gain from those same developments, thereby offsetting the decline in the value of such portfolio positions.

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Such hedging transactions could also limit the opportunity for gain if the values of the underlying portfolio positions increased. Moreover, it might not be possible to hedge against an exchange rate or interest rate fluctuation that was so generally anticipated that we would not be able to enter into a hedging transaction at an acceptable price. Use of a hedging transaction could involve counterparty credit risk.

While we may enter into hedging transactions to seek to reduce currency exchange rate and interest rate risks, unanticipated changes in currency exchange rates or interest rates could result in poorer overall investment performance than if we had not engaged in any such hedging transactions. In addition, the degree of correlation between price movements of the instruments used in a hedging strategy and price movements in the portfolio positions being hedged could vary. Moreover, for a variety of reasons, we might not seek to establish a perfect correlation between the hedging instruments and the portfolio holdings being hedged. Any such imperfect correlation could prevent us from achieving the intended hedge and expose us to risk of loss. In addition, it might not be possible to hedge fully or perfectly against currency fluctuations affecting the value of securities denominated in non-U.S. currencies because the value of those securities would likely fluctuate as a result of factors not related to currency fluctuations. Our ability to engage in hedging transactions may also be adversely affected by rules adopted by the CFTC.

We may not realize gains from our equity investments.

When we invest in one stop, second lien and subordinated loans, we may acquire warrants or other equity securities of portfolio companies as well. We may also invest in equity securities directly. To the extent we hold equity investments, we will attempt to dispose of them and realize gains upon our disposition of them. However, the equity interests we receive may not appreciate in value and may decline in value. As a result, we may not be able to realize gains from our equity interests, and any gains that we do realize on the disposition of any equity interests may not be sufficient to offset any other losses we experience.

Risks Relating to Offerings Pursuant to this Prospectus

Investing in our securities may involve an above average degree of risk.

The investments we make in accordance with our investment objective may result in a higher amount of risk than alternative investment options and a higher risk of volatility or loss of principal. Our investments in portfolio companies involve higher levels of risk, and therefore, an investment in our securities may not be suitable for someone with lower risk tolerance.

Shares of closed-end investment companies, including business development companies, often trade at a discount to their net asset value.

Shares of closed-end investment companies, including business development companies, may trade at a discount from net asset value. This characteristic of closed-end investment companies and business development companies is separate and distinct from the risk that our net asset value per share may decline. We cannot predict whether our common stock will trade at, above or below net asset value.

There is a risk that investors in our equity securities may not receive distributions or that our distributions may not grow over time and a portion of our distributions may be a return of capital.

We intend to make distributions on a quarterly basis to our stockholders out of assets legally available for distribution. We cannot assure you that we will achieve investment results that will allow us to make a specified level of cash distributions or year-to-year increases in cash distributions. Our ability to pay distributions might be adversely affected by the impact of one or more of the risk factors described in this prospectus. Due to the asset coverage test applicable to us under the 1940 Act as a business development company, we may be limited in our ability to make distributions. If we declare a dividend and if more stockholders opt to receive cash distributions rather than participate in our dividend reinvestment plan, we may be forced to sell some of our investments in order to make cash dividend payments.

The market price of our securities may fluctuate significantly.

The market price and liquidity of the market for our securities may be significantly affected by numerous factors, some of which are beyond our control and may not be directly related to our operating performance. These factors include:

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If we issue preferred stock, debt securities or convertible debt securities, the net asset value and market value of our common stock may become more volatile.

We cannot assure you that the issuance of preferred stock and/or debt securities would result in a higher yield or return to the holders of our common stock. The issuance of preferred stock, debt securities or convertible debt would likely cause the net asset value and market value of our common stock to become more volatile. If the dividend rate on the preferred stock, or the interest rate on the debt securities, were to approach the net rate of return on our investment portfolio, the benefit of leverage to the holders of our common stock would be reduced. If the dividend rate on the preferred stock, or the interest rate on the debt securities, were to exceed the net rate of return on our portfolio, the use of leverage would result in a lower rate of return to the holders of common stock than if we had not issued the preferred stock or debt securities. Any decline in the net asset value of our investment would be borne entirely by the holders of our common stock. Therefore, if the market value of our portfolio were to decline, the leverage would result in a greater decrease in net asset value to the holders of our common stock than if we were not leveraged through the issuance of preferred stock. This decline in net asset value would also tend to cause a greater decline in the market price for our common stock.

There is also a risk that, in the event of a sharp decline in the value of our net assets, we would be in danger of failing to maintain required asset coverage ratios which may be required by the preferred stock, debt securities, convertible debt or units or of a downgrade in the ratings of the preferred stock, debt securities, convertible debt or units or our current investment income might not be sufficient to meet the dividend requirements on the preferred stock or the interest payments on the debt securities. In order to counteract such an event, we might need to liquidate investments in order to fund redemption of some or all of the preferred stock, debt securities or convertible debt. In addition, we would pay (and the holders of our common stock would bear) all costs and expenses relating to the issuance and ongoing maintenance of the preferred stock, debt securities, convertible debt or any combination of these securities. Holders of preferred stock, debt securities or convertible debt may have different interests than holders of common stock and may at times have disproportionate influence over our affairs.

We are a holding company and depend on payments from our subsidiaries in order to make payments on any debt securities that we may issue as well as to pay dividends on our common stock. Any debt securities that we issue will be structurally subordinated to the obligations of our subsidiaries.

We are a holding company and fund a majority of our investments through wholly-owned subsidiaries, and a majority of the assets that we hold directly are the equity interests in such subsidiaries, including the Subordinated Notes. We depend upon the cash flow from our subsidiaries and the receipt of funds from them

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in the form of payments on the Subordinated Notes, dividends, and other distributions, any of which may be subject to restriction or limitations based on the organizational documents of the subsidiaries and the agreements governing the debt of any such subsidiary. In addition, because we are a holding company, any debt securities that we issue will be structurally subordinated to the obligations of our subsidiaries. In the event that one of our subsidiaries becomes insolvent, liquidates, reorganizes, dissolves or otherwise winds up, its assets will be used first to satisfy the claims of its creditors. Consequently, any claim by us or our creditors, including holders of any debt securities that we may issue, against any subsidiary will be structurally subordinated to all of the claims of the creditors of such subsidiary. We cannot assure security holders that they will receive any payments required to be made under the terms of any debt securities that we may issue, dividends or other distributions.

Holders of any preferred stock that we may issue will have the right to elect members of the board of directors and have class voting rights on certain matters.

The 1940 Act requires that holders of shares of preferred stock must be entitled as a class to elect two directors at all times and to elect a majority of the directors if dividends on such preferred stock are in arrears by two years or more, until such arrearage is eliminated. In addition, certain matters under the 1940 Act require the separate vote of the holders of any issued and outstanding preferred stock, including changes in fundamental investment restrictions and conversion to open-end status and, accordingly, preferred stockholders could veto any such changes. Restrictions imposed on the declarations and payment of dividends or other distributions to the holders of our common stock and preferred stock, both by the 1940 Act and by requirements imposed by rating agencies, might impair our ability to maintain our qualification as a RIC for U.S. federal income tax purposes.

Your interest in us may be diluted if you do not fully exercise your subscription rights in any rights offering. In addition, if the subscription price is less than our net asset value per share, then you will experience an immediate dilution of the aggregate net asset value of your shares.

In the event we issue subscription rights, stockholders who do not fully exercise their subscription rights should expect that they will, at the completion of a rights offering pursuant to this prospectus, own a smaller proportional interest in us than would otherwise be the case if they fully exercised their rights. We cannot state precisely the amount of any such dilution in share ownership because we do not know at this time what proportion of the shares will be purchased as a result of such rights offering.

In addition, if the subscription price is less than the net asset value per share of our common stock, then our stockholders would experience an immediate dilution of the aggregate net asset value of their shares as a result of the offering. The amount of any decrease in net asset value is not predictable because it is not known at this time what the subscription price and net asset value per share will be on the expiration date of a rights offering or what proportion of the shares will be purchased as a result of such rights offering. Such dilution could be substantial.

These dilutive effects may be exacerbated if we were to conduct multiple subscription rights offerings, particularly if such offerings were to occur over a short period of time. In addition, subscription rights offerings and the prospect of future subscription rights offerings may create downward pressure on the secondary market price of our common stock due to the potential for the issuance of shares at a price below our net asset value, without a corresponding change to our net asset value.

Our stockholders will experience dilution in their ownership percentage if they do not participate in our dividend reinvestment plan.

All dividends declared in cash payable to stockholders that are participants in our dividend reinvestment plan are automatically reinvested in shares of our common stock. As a result, our stockholders that do not participate in our dividend reinvestment plan will experience dilution in their ownership percentage of our common stock over time.

The trading market or market value of our publicly issued debt securities may fluctuate.

Our publicly issued debt securities may or may not have an established trading market. We cannot assure you that a trading market for our publicly issued debt securities will ever develop or be maintained if

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developed. In addition to our creditworthiness, many factors may materially adversely affect the trading market for, and market value of, our publicly issued debt securities. These factors include, but are not limited to, the following:

You should also be aware that there may be a limited number of buyers when you decide to sell your debt securities. This too may materially adversely affect the market value of the debt securities or the trading market for the debt securities.

Terms relating to redemption may materially adversely affect your return on any debt securities that we may issue.

If your debt securities are redeemable at our option, we may choose to redeem your debt securities at times when prevailing interest rates are lower than the interest rate paid on your debt securities. In addition, if your debt securities are subject to mandatory redemption, we may be required to redeem your debt securities also at times when prevailing interest rates are lower than the interest rate paid on your debt securities. In this circumstance, you may not be able to reinvest the redemption proceeds in a comparable security at an effective interest rate as high as your debt securities being redeemed.

Our credit ratings may not reflect all risks of an investment in our debt securities.

Our credit ratings are an assessment by third parties of our ability to pay our obligations. Consequently, real or anticipated changes in our credit ratings will generally affect the market value of our debt securities. Our credit ratings, however, may not reflect the potential impact of risks related to market conditions generally or other factors discussed above on the market value of or trading market for the publicly issued debt securities.

Sales of substantial amounts of our common stock in the public market may have an adverse effect on the market price of our common stock.

Sales of substantial amounts of our common stock, or the availability of such common stock for sale, could adversely affect the prevailing market prices for our common stock. If this occurs and continues, it could impair our ability to raise additional capital through the sale of securities should we desire to do so.

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

Some of the statements in this prospectus constitute forward-looking statements, which relate to future events or our performance or financial condition. The forward-looking statements contained in this prospectus involve risks and uncertainties, including statements as to:

Such forward-looking statements may include statements preceded by, followed by or that otherwise include the words “may,” “might,” “will,” “intend,” “should,” “could,” “can,” “would,” “expect,” “believe,” “estimate,” “anticipate,” “predict,” “potential,” “plan” or similar words. The forward-looking statements contained in this prospectus involve risks and uncertainties. Our actual results could differ materially from those implied or expressed in the forward-looking statements for any reason, including the factors set forth as “Risk Factors” and elsewhere in this prospectus.

We have based the forward-looking statements included in this prospectus on information available to us on the date of this prospectus, and we assume no obligation to update any such forward-looking statements. Actual results could differ materially from those anticipated in our forward-looking statements and future results could differ materially from historical performance. Although we undertake no obligation to revise or update any forward-looking statements, whether as a result of new information, future events or otherwise, you are advised to consult any additional disclosures that we may make directly to you or through reports that we have filed or in the future may file with the SEC, including annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K. This prospectus contains statistics and other data that have been obtained from or compiled from information made available by third-party service providers. We have not independently verified such statistics or data.

You should understand that, under Sections 27A(b)(2)(B) of the Securities Act and Section 21E(b)(2)(B) of the Exchange Act, the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995 do not apply to statements made in connection with any offering of securities pursuant to this prospectus, any prospectus supplement or in periodic reports we file under the Exchange Act.

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USE OF PROCEEDS

Unless otherwise specified in a prospectus supplement, we intend to use all or substantially all of the net proceeds from the sale of our securities to invest in portfolio companies in accordance with our investment objective and strategies and for general corporate purposes. We expect that our new investments will consist primarily of senior secured, one stop, second lien and subordinated loans. We will also pay operating expenses, including management and administrative fees, and may pay other expenses such as due diligence expenses relating to potential new investments, from the net proceeds of any offering of our securities. We may also use a portion of the net proceeds from the sale of our securities to repay amounts outstanding under our Credit Facility, which bore an annual interest rate of 2.42% (i.e., one-month LIBOR plus 2.25% per annum) on the outstanding balance as of $166.0 million as of December 31, 2013 and matures on October 22, 2018, and our Revolver, which, at the election of Revolver Funding, bears an interest rate of either one-, two-, or three-month LIBOR plus 3.50% per annum or PrivateBank’s prime rate plus 1.50% per annum through November 22, 2014 and either one-, two-, or three-month LIBOR plus 2.50% per annum or PrivateBank’s prime rate plus 0.50% per annum for the period subsequent to November 22, 2014 and matures on November 22, 2019.

We anticipate that we will use substantially all of the net proceeds of an offering for the above purposes within approximately six months after the completion of any offering of our securities, depending on the availability of appropriate investment opportunities consistent with our investment objective and market conditions. We cannot assure you that we will achieve our targeted investment pace.

Until such appropriate investment opportunities can be found, we will invest the net proceeds of any offering of our securities primarily in cash, cash equivalents, U.S. government securities and high-quality debt investments that mature in one year or less from the date of investment. These temporary investments may have lower yields than our other investments and, accordingly, may result in lower distributions, if any, during such period. Our ability to achieve our investment objective may be limited to the extent that the net proceeds from an offering, pending full investment, are held in lower yielding interest-bearing deposits or other short-term instruments. See “Regulation — Temporary Investments” for additional information about temporary investments we may make while waiting to make longer-term investments in pursuit of our investment objective.

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DISTRIBUTIONS

To the extent that we have income available, we intend to make quarterly distributions to our stockholders. Our quarterly distributions, if any, are determined by our board of directors. Any distributions to our stockholders will be declared out of assets legally available for distribution.

We have elected to be treated, and intend to qualify annually, as a RIC under Subchapter M of the Code. To maintain RIC qualification, we must distribute at least 90% of our net ordinary income and net short-term capital gains in excess of our net long-term capital losses, if any. In addition, we are subject to ordinary income and capital gain distribution requirements under U.S. federal excise tax rules for each calendar year. If we do not meet the required distributions we will be subject to a 4% nondeductible federal excise tax on the undistributed amount.

The following table reflects the cash distributions, including dividends and returns of capital per share that we have paid on our common stock since October 1, 2011.

		Payment Dates				Distributions Declared
Record Dates						Per Share				Dollar amount
						(in thousands except per share data)
Fiscal year ended September 30, 2012
December 19, 2011			December 29, 2011				0.32				6,955
March 16, 2012			March 29, 2012				0.32				8,187
June 15, 2012			June 29, 2012				0.32				8,204
September 13, 2012			September 27, 2012				0.32				8,211
Fiscal year ending September 30, 2013
December 14, 2012			December 28, 2012				0.32				9,146
March 14, 2013			March 28, 2013				0.32				10,793
June 13, 2013			June 27, 2013				0.32				12,722
September 13, 2013			September 27, 2013				0.32				12,733
Fiscal year ending September 30, 2014
December 17, 2013			December 27, 2013				0.32				13,850
March 17, 2014(2)			March 28, 2014				0.32				13,864
Total(1)						$	3.20			$	104,665

We currently intend to distribute net capital gains (i.e., net long-term capital gains in excess of net short-term capital losses), if any, at least annually out of the assets legally available for such distributions. However, we may decide in the future to retain such capital gains for investment and elect to treat such gains as deemed distributions to you. If this happens, you will be treated for U.S. federal income tax purposes as if you had received an actual distribution of the capital gains that we retain and reinvested the net after tax proceeds in us. In this situation, you would be eligible to claim a tax credit (or, in certain circumstances, a tax refund) equal to your allocable share of the tax we paid on the capital gains deemed distributed to you. See “Material U.S. Federal Income Tax Considerations — Taxation of U.S. Stockholders.” We cannot assure you that we will achieve results that will permit us to pay any cash distributions, and if we issue senior securities, we will be prohibited from making distributions if doing so would cause us to fail to maintain the asset coverage ratios stipulated by the 1940 Act or if such distributions are limited by the terms of any of our borrowings.

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Unless you elect to receive your distributions in cash, we intend to make such distributions in additional shares of our common stock under our dividend reinvestment plan. Although distributions paid in the form of additional shares of our common stock will generally be subject to U.S. federal, state and local taxes in the same manner as cash distributions, investors participating in our dividend reinvestment plan will not receive any corresponding cash distributions with which to pay any such applicable taxes. If you hold shares of our common stock in the name of a broker or financial intermediary, you should contact such broker or financial intermediary regarding your election to receive distributions in cash in lieu of shares of our common stock. Any distributions reinvested through the issuance of shares through our dividend reinvestment plan will increase our gross assets on which the base management fee and the incentive fee are determined and paid to GC Advisors. See “Dividend Reinvestment Plan.”

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SELECTED CONSOLIDATED FINANCIAL DATA

The following selected consolidated financial data of Golub Capital BDC as of and for the fiscal years ended September 30, 2013, 2012, 2011, 2010 and 2009 are derived from our consolidated financial statements that have been audited by McGladrey LLP, an independent registered public accounting firm. For the period prior to September 30, 2009, the financial data refers to the financial condition and results of operations of our predecessor, GCMF. Golub Capital BDC's consolidated financial statements for the three-month period ended December 31, 2013 and 2012 are unaudited. However, in our opinion, all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation have been made. Interim results may be subject to significant quarterly variations and may not be indicative of the results of operations to be expected for a full fiscal year. The financial data should be read in conjunction with our consolidated financial statements and related notes thereto and “Management’s Discussion and Analysis of Financial Condition, Results of Operations and Cash Flows” included elsewhere in this prospectus.

		Golub Capital BDC(1)																								GCMF
		As of and for the three months ended								As of and for the years ended
		December 31, 2013				December 31, 2012				September 30, 2013				September 30, 2012				September 30, 2011				September 30, 2010				September 30, 2009
		(unaudited)				(unaudited)				(In thousands, except per share data)
Statement of Operations Data:
Total investment income		$	25,579			$	18,594			$	83,774			$	57,859			$	39,150			$	33,150			$	33,338
Base management fee			3,824				2,468				11,749				8,495				5,789				3,328				2,849
Incentive fee			3,032				2,394				9,844				6,228				348				55				—
All other expenses			5,463				4,154				17,786				15,260				10,197				6,400				5,011
Net investment income			13,260				9,578				44,395				27,876				22,816				23,367				25,478
Net realized (loss) gain on investments and derivative instruments			(4,994	)			94				(1,363	)			(3,372	)			2,037				(40	)			(3,972	)
Net change in unrealized appreciation (depreciation) on investments, derivative instruments and secured borrowings			6,571				(353	)			3,488				7,256				(3,514	)			2,921				(1,489	)
Net increase in net assets resulting from operations			14,837				9,319				46,520				31,760				21,339				26,248				20,017
Per share data:
Net asset value		$	15.23			$	14.66			$	15.21			$	14.60			$	14.56			$	14.71				N/A	(2)
Net investment income			0.31				0.34				1.29				1.15				1.16				N/A	(2)			N/A	(2)
Net realized (loss) gain on investments and derivative instruments			(0.12	)			—				(0.04	)			(0.14	)			0.10				N/A	(2)			N/A	(2)
Net change in unrealized appreciation (depreciation) on investments, derivative instruments and secured borrowings			0.15				(0.01	)			0.10				0.30				(0.18	)			N/A	(2)			N/A	(2)
Net increase in net assets resulting from operations			0.34				0.33				1.35				1.31				1.09				N/A	(2)			N/A	(2)
Per share distributions declared			0.32				0.32				1.28				1.28				1.27				0.55				N/A	(2)
From net investment income			N/A				N/A				1.15				1.24				1.19				0.49				N/A
From capital gains			N/A				N/A				—				—				0.09				—				N/A
From return of capital			N/A				N/A				0.13				0.04				—				0.06				N/A
Dollar amount of distributions declared			13,850				9,146				45,394				31,556				25,069				9,742				N/A
From net investment income			N/A				N/A				40,605				30,484				23,254				8,620				N/A
From capital gains			N/A				N/A				—				—				1,815				—				N/A
From return of capital			N/A				N/A				4,789				1,072				—				1,122				N/A

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		Golub Capital BDC(1)																								GCMF
		As of and for the three months ended								As of and for the years ended
		December 31, 2013				December 31, 2012				September 30, 2013				September 30, 2012				September 30, 2011				September 30, 2010				September 30, 2009
		(unaudited)				(unaudited)				(In thousands, except per share data)
Balance Sheet data at period end:
Investments, at fair value		$	1,179,919			$	768,342			$	1,024,645			$	672,910			$	459,827			$	344,869			$	376,294
Cash and cash equivalents			71,683				60,646				54,717				50,927				69,766				92,990				30,614
Other assets			13,225				10,015				12,294				10,259				30,051				4,904				2,214
Total assets			1,264,827				839,003				1,091,656				734,096				559,644				442,763				409,122
Total debt			591,566				400,450				420,909				352,300				237,683				174,000				315,306
Total liabilities			604,846				419,613				433,420				358,967				243,095				182,222				316,370
Total net assets			659,981				419,390				658,236				375,129				316,549				260,541				92,752
Other Data
Weighted average annualized yield on income producing investments at fair value(3)			8.6	%			9.7	%			9.1	%			9.3	%			8.6	%			8.4	%			8.1	%
Number of portfolio companies at period end			139				129				135				121				103				94				95

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION, RESULTS OF OPERATIONS AND CASH FLOWS

The following discussion and analysis of our financial condition, results of operations and cash flows should be read in conjunction with “Selected Consolidated Financial Data” and the financial statements and the related notes thereto of us appearing elsewhere in this prospectus. The information in this section contains forward-looking statements that involve risks and uncertainties. Please see “Risk Factors” and “Special Note Regarding Forward-Looking Statements” for a discussion of the uncertainties, risks and assumptions associated with these statements.

Overview

We are an externally managed, closed-end, non-diversified management investment company that has elected to be regulated as a business development company under the 1940 Act. In addition, for U.S. federal income tax purposes, we have elected to be treated as a RIC under Subchapter M of the Code. As a business development company and a RIC, we are also subject to certain constraints, including limitations imposed by the 1940 Act and the Code. We were formed in November 2009 to continue and expand the business of our predecessor, GCMF, which commenced operations in July 2007, in making investments primarily in senior secured, one stop (a loan that combines characteristics of traditional first lien senior secured loans and second lien or subordinated loans), second lien and subordinated (a loan that ranks senior only to a borrower’s equity securities and ranks junior to all of such borrower’s other indebtedness in priority of payment) loans and warrants and minority equity securities of middle market companies that are, in most cases, sponsored by private equity firms.

Our shares are currently listed on The NASDAQ Global Select Market under the symbol “GBDC”.

Our investment objective is to maximize the total return to our stockholders in the form of current income and capital appreciation through debt and minority equity investments. We intend to achieve our investment objective by (1) accessing the established loan origination channels developed by Golub Capital, a leading lender to middle-market companies with over $8.0 billion in capital under management, (2) selecting investments within our core middle-market company focus, (3) partnering with experienced sponsors, in many cases with whom we have invested alongside in the past, (4) implementing the disciplined underwriting standards of Golub Capital and (5) drawing upon the aggregate experience and resources of Golub Capital.

Our investment activities are managed by GC Advisors and supervised by our board of directors of which a majority of the members are independent of us.

Under the Investment Advisory Agreement, which was most recently reapproved by our board of directors in February 2014, we have agreed to pay GC Advisors an annual base management fee based on our average adjusted gross assets as well as an incentive fee based on our investment performance. We have also entered into the Administration Agreement with the Administrator, under which we have agreed to reimburse the Administrator for our allocable portion (subject to the review and approval of our independent directors) of overhead and other expenses incurred by the Administrator in performing its obligations under the Administration Agreement.

We seek to create a diverse portfolio that includes primarily senior secured, one stop, second lien and subordinated loans and warrants and minority equity securities by investing approximately $5 to $25 million of capital, on average, in the securities of middle-market companies. We may also selectively invest more than $25 million in some of our portfolio companies and generally expect that the size of our individual investments will vary proportionately with the size of our capital base.

As of December 31, 2013, our portfolio at fair value was comprised of 24.6% senior secured loans, 59.5% one stop loans, 9.4% second lien loans, 0.5% subordinated loans, 3.2% equity and 2.8% of investments in SLF. As of September 30, 2013, our portfolio at fair value was comprised of 28.9% senior secured loans, 54.1% one stop loans, 11.0% second lien loans, 2.2% subordinated loans, 3.3% equity and 0.5% of investments in SLF. As of September 30, 2012, our portfolio at fair value was comprised of 40.7% senior secured loans, 39.5% one stop loans, 6.6% second lien loans, 10.0% subordinated loans and 3.2% equity.

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As of December 31, 2013 and September 30, 2013, 2012 and 2011, we had debt and equity investments in 139, 135, 121, and 103 portfolio companies, respectively. For the three months ended December 31, 2013 and years ended September 30, 2013, 2012 and 2011, our income producing assets, which represented nearly 100% of our total portfolio, had a weighted average interest income (which excludes income resulting from amortization of fees and discounts) yield of 8.6%, 9.1%, 9.3%, and 8.6% and a weighted average investment income (which includes interest income and amortization of fees and discounts) yield of 9.3%, 10.1%, 10.2%, and 9.9%, respectively.

Revenues:  We generate revenue in the form of interest income on debt investments and capital gains and distributions, if any, on portfolio company investments that we originate or acquire. Our debt investments, whether in the form of senior secured, one stop, second lien or subordinated loans, typically have a term of three to seven years and bear interest at a fixed or floating rate. In some instances, we receive payments on our debt investments based on scheduled amortization of the outstanding balances. In addition, we receive repayments of some of our debt investments prior to their scheduled maturity date. The frequency or volume of these repayments fluctuates significantly from period to period. Our portfolio activity also reflects the proceeds of sales of securities. In some cases, our investments provide for deferred interest payments or PIK interest. The principal amount of loans and any accrued but unpaid interest generally become due at the maturity date. In addition, we may generate revenue in the form of commitment, origination, amendment, structuring or due diligence fees, fees for providing managerial assistance and consulting fees. Loan origination fees, original issue discount and market discount or premium are capitalized, and we accrete or amortize such amounts as interest income. We record prepayment premiums on loans as interest income. When we receive partial principal payments on a loan in an amount that exceeds its amortized cost, we record the excess principal payment as interest income. Dividend income on preferred equity securities is recorded as dividend income on an accrual basis to the extent that such amounts are payable by the portfolio company and are expected to be collected. Dividend income on common equity securities is recorded on the record date for private portfolio companies or on the ex-dividend date for publicly traded portfolio companies. Distributions received from LLC, and limited partnership, or LP, investments are evaluated to determine if the distribution should be recorded as dividend income or a return of capital. Generally, we will not record distributions from equity investments in LLCs and LPs as dividend income unless there are sufficient accumulated tax-basis earnings and profits in the LLC or LP prior to the distribution. Distributions that are classified as a return of capital are recorded as a reduction in the cost basis of the investment.

We recognize realized gains or losses on investments based on the difference between the net proceeds from the disposition and the cost basis of the investment or derivative instrument, without regard to unrealized gains or losses previously recognized. We record current period changes in fair value of investments and derivative instruments that are measured at fair value as a component of the net change in unrealized appreciation (depreciation) on investments in the consolidated statements of operations.

Partial loan sales:  We follow the guidance in ASC Topic 860 — Transfers and Servicing, or ASC Topic 860, when accounting for loan participations and other partial loan sales. Such guidance requires a participation or other partial loan sale to meet the definition of a “participating interest”, as defined in the guidance, in order for sale treatment to be allowed. Participations or other partial loan sales, which do not meet the definition of a participating interest, remain on our consolidated statements of assets and liabilities and the proceeds are recorded as a secured borrowing until the definition is met.

Expenses:  Our primary operating expenses include the payment of fees to GC Advisors under the Investment Advisory Agreement, our allocable portion of overhead expenses under the Administration Agreement and other operating costs described below. Additionally, we pay interest expense on our outstanding debt. We bear all other out-of-pocket costs and expenses of our operations and transactions, including:

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During periods of asset growth, we expect our general and administrative expenses to be relatively stable or decline as a percentage of total assets and increase during periods of asset declines. Incentive fees, interest expenses and costs relating to future offerings of securities would be additive to the expenses described above.

GC Advisors, as collateral manager for the Securitization Issuer under the collateral management agreement, is entitled to receive an annual fee in an amount equal to 0.35% of the principal balance of the portfolio loans held by the Securitization Issuer at the beginning of the collection period relating to each payment date, which is payable in arrears on each payment date. This fee, which is less than the management fee payable under the Investment Advisory Agreement, is paid directly by the Securitization Issuer to GC Advisors and offset against such management fee. Accordingly, the 1.375% management fee paid by us to GC Advisors under the Investment Advisory Agreement on all of our assets, including those indirectly held through the Securitization Issuer, is reduced, on a dollar-for-dollar basis, by an amount equal to such 0.35%

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fee paid to GC Advisors by the Securitization Issuer. The term “collection period” refers to a quarterly period running from the day after the end of the prior collection period to the fifth business day of the calendar month in which a payment date occurs. This fee may be waived by the collateral manager. The collateral management agreement does not include any incentive fee payable to GC Advisors. In addition, the Securitization Issuer paid Wells Fargo Securities, LLC a structuring and placement fee for its services in connection with the initial structuring and subsequent amendment of the Debt Securitization. The Securitization Issuer also agreed to pay ongoing administrative expenses to the trustee, collateral manager, independent accountants, legal counsel, rating agencies and independent managers in connection with developing and maintaining reports, and providing required services in connection with, the administration of the Debt Securitization. The administrative expenses are paid by the Securitization Issuer on each payment date in two parts: (1) a component that is paid in a priority to other amounts distributed by the Securitization Issuer, subject to a cap equal to the sum of 0.04% per annum on the adjusted principal balance of the portfolio loans and other assets held by the Securitization Issuer on the last day of the collection period relating to such payment date, plus $150,000 per annum, and (2) a component that is paid in a subordinated position relative to other amounts distributed by the Securitization Issuer, equal to any amounts that exceed the aforementioned administrative expense cap. We believe that these administrative expenses approximate the amount of ongoing fees and expenses that we would be required to pay in connection with a traditional secured credit facility. Our common stockholders indirectly bear all of these expenses.

Recent Developments

On January 17, 2014, SLF II, a wholly-owned subsidiary of SLF, entered into the SLF Credit Facility with Wells Fargo Securities, LLC, as administrative agent, and Wells Fargo Bank, N.A., as lender, which allows SLF II to borrow up to $50.0 million at any one time outstanding. The period from the closing date through January 17, 2015 is referred to as the reinvestment period. All amounts outstanding under the SLF Credit Facility are required to be repaid by January 17, 2019. Through the reinvestment period, the SLF Credit Facility bears interest at one-month LIBOR plus a rate between 1.75% and 2.25%, depending on the composition of the collateral asset portfolio, per annum. After the reinvestment period, the rate will reset to LIBOR plus 2.75% per annum for the remaining term of the SLF Credit Facility. In addition to the stated interest expense on the SLF Credit Facility, SLF is required to pay a non-usage fee rate of 0.50% per annum through July 17, 2014 and thereafter between 0.50% and 2.00% per annum depending on the size of the unused portion of the SLF Credit Facility. The SLF Credit Facility is collateralized by all of the assets held by SLF II. SLF and SLF II have made customary representations and warranties and are required to comply with various covenants, reporting requirements and other customary requirements for similar credit facilities.

On February 4, 2014, our board of directors declared a quarterly distribution of $0.32 per share payable on March 28, 2014 to holders of record as of March 17, 2014.

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Consolidated Results of Operations

Comparison of the Three Months Ended December 31, 2013 and December 31, 2012

Consolidated operating results for the three months ended December 31, 2013 and 2012 are as follows:

		For the three months ended December 31,								Variances
		2013				2012				2013 vs. 2012
		(In thousands)
Interest income		$	23,474			$	15,887			$	7,587
Income from accretion of discounts and origination fees			1,908				2,440				(532	)
Interest income from subordinated notes in SLF			181				—				181
Dividend income			16				267				(251	)
Total investment income			25,579				18,594				6,985
Total expenses			12,319				9,016				3,303
Net investment income			13,260				9,578				3,682
Net realized (losses) gains on investments and derivative instruments			(4,994	)			94				(5,088	)
Net change in unrealized appreciation (depreciation) on investments and secured borrowings			6,571				(353	)			6,924
Net income		$	14,837			$	9,319			$	5,518
Average earning portfolio company investments, at fair value		$	1,089,469			$	663,077			$	426,392
Average debt outstanding(1)		$	494,588			$	338,768			$	155,820

The results of operations for the three months ended December 31, 2013 and 2012 may not be indicative of the results we report in future periods. Net income can vary substantially from period to period for various reasons, including the recognition of realized gains and losses and unrealized appreciation and depreciations. As a result, quarterly comparisons of net income may not be meaningful.

Investment Income

Interest income increased by $7.6 million from the three months ended December 31, 2012 to the three months ended December 31, 2013 and was primarily driven by an increase in the average earning investment balance, which is the annual average balance of accruing loans in our investment portfolio, of $426.4 million and an increase in prepayment fees of $0.5 million. These gains were partially offset by decline in the weighted average annualized interest income yield (which excludes income resulting from amortization of fees and discounts), which declined from 9.7% for the three months ended December 31, 2012 to 8.6% for the three months ended December 31, 2013. The decrease in yield was driven by the interest rate compression on new investments.

Income from accretion of discounts and amortization of premiums decreased by $0.5 million from the three months ended December 31, 2012 to the three months ended December 31, 2013. Income from the accretion of discounts and the amortization of premiums will fluctuate from quarter-to-quarter depending on the volume of payoffs and the discounts and premiums on the loans at the time of payoffs. A decline in payoffs by $32.5 million from the three months ended December 31, 2012 to the three months ended December 31, 2013 contributed to the decline in income from accretion of discounts and amortization of premiums.

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For the three months ended December 31, 2013, we recorded dividend income of less than $0.1 million and received return of capital distributions of $1.4 million. For the three months ended December 31, 2012, we recorded dividend income of $0.3 million and received return of capital distributions of $0.1 million.

The annualized interest income yield (which excludes income resulting from amortization of fees and discounts) by security type for the three months ended December 31, 2013 and 2012 was as follows:

		For the three months ended December 31,
		2013				2012
Senior secured			7.2	%			7.3	%
One stop			8.7	%			9.1	%
Second lien			11.6	%			11.2	%
Subordinated debt			13.9	%			14.0	%
Subordinated notes in SLF(1)			4.3	%			N/A

Annualized interest rate yields on senior secured and one stop investments have declined from the three months ended December 31, 2012 to the three months ended December 31, 2013 due to a general downward trend of interest rate compression on new investments between the two periods. The increase in yield on second lien debt is attributed to the inclusion of $0.4 million of prepayment fees. Interest rate yields on subordinated debt remained stable for the three months ended December 31, 2013 as compared to the three months ended December 31, 2012. For additional details on investment yields and asset mix, refer to the “Liquidity and Capital Resources — Portfolio Composition, Investment Activity and Yield” section below.

Expenses

The following table summarizes our expenses:

		For the three months ended December 31,								Variances
		2013				2012				2013 vs. 2012
		(In thousands)
Interest and other debt financing expenses		$	4,092			$	2,995			$	1,097
Base management fee			3,824				2,468				1,356
Incentive fee			3,032				2,394				638
Professional fees			658				493				165
Administrative service fee			582				548				34
General and administrative expenses			131				118				13
Total expenses		$	12,319			$	9,016			$	3,303

Interest and other debt financing expenses increased from the three months ended December 31, 2012 to the three months ended December 31, 2013 primarily due to an increase in the weighted average of outstanding borrowings from $338.8 million for the three months ended December 31, 2012 to $494.6 million for the three months ended December 31, 2013. We increased our use of debt under the Debt Securitization, Small Business Administration, or SBA, debentures through the SBICs and the Credit Facility, entered into by Funding with Wells Fargo Securities, LLC as administrative agent and Wells Fargo Bank, N.A. as lender to $215.0 million, $196.3 million and $165.9 million, respectively, as of December 31, 2013 from outstanding balances of $203.0 million, $135.0 million and $91.5 million, respectively, as of December 31, 2012. The increase in interest and debt financing expenses was partially offset by a decrease in the effective annualized average interest rate on our outstanding debt from 3.4% for the three months ended December 31, 2012 to 3.1% for the three months ended December 31, 2013.

The base management fee increased as a result of a sequential increase in average assets from December 31, 2012 to December 31, 2013. The incentive fee increased by $0.6 million from the three months ended December 31, 2012 to the three months ended December 31, 2013 primarily due to the increase in our

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average earning investment balances and related net investment income. The professional fees and the administrative service fee increased from December 31, 2012 to December 31, 2013 due to an increase in costs associated with servicing a growing investment portfolio.

The Administrator pays for certain expenses incurred by us. These expenses are subsequently reimbursed in cash. Total expenses reimbursed by us to the Administrator for the three months ended December 31, 2013 were $0.3 million. There were no expense reimbursements made during the three months ended December 31, 2012.

As of December 31, 2013 and September 30, 2013, included in accounts payable and accrued expenses were $0.3 million and $0.3 million, respectively, for accrued expenses paid on behalf of us by the Administrator.

Net Realized and Unrealized Gains and Losses

The following table summarizes our net realized and unrealized gains (losses) for the periods presented:

		For the three months ended December 31,								Variances
		2013				2012				2013 vs. 2012
		(In thousands)
Net realized (loss) gain on investments		$	(4,994	)		$	94			$	(5,088	)
Net realized (loss) gain			(4,994	)			94				(5,088	)
Unrealized appreciation on investments			13,772				5,415				8,357
Unrealized (depreciation) on investments			(7,366	)			(5,768	)			(1,598	)
Unrealized appreciation on investments in SLF(1)			651				—				651
Unrealized (depreciation) on investments in SLF(1)			(410	)			—				(410	)
Unrealized appreciation on secured borrowings			6				—				6
Unrealized (depreciation) on secured borrowings			(82	)			—				(82	)
Net change in unrealized appreciation (depreciation) on investments, investments in SLF, and secured borrowings		$	6,571			$	(353	)		$	6,924

For the three months ended December 31, 2013, we had net realized losses on investments totaling $5.0 million primarily due to the sale of one underperforming portfolio company and the write off of two non-accrual portfolio companies.

During the three months ended December 31, 2013, we had $13.8 million in unrealized appreciation on 64 portfolio company investments, which was partially offset by $7.4 million in unrealized depreciation on 115 portfolio company investments. Unrealized appreciation during the three months ended December 31, 2013 resulted from an increase in fair value primarily due to the rise in market prices and a reversal of prior period unrealized depreciation associated with the portfolio company investment sales and write-offs. Unrealized depreciation primarily resulted from the amortization of discounts and negative credit related adjustments that caused a reduction in fair value. Additionally, we had $0.1 million in net unrealized depreciation on secured borrowing proceeds related to two portfolio companies for the three months ended December 31, 2013. The unrealized depreciation resulted from the amortization of discounts and the rise in market prices associated with the investments funded by the secured borrowing proceeds.

For the three months ended December 31, 2013, we had $0.6 million in unrealized appreciation on our investment in SLF LLC equity interests, which was partially offset by $0.4 million in unrealized depreciation on our investment in SLF subordinated notes. The unrealized depreciation was the result of the lower yielding contractual rate compared to comparable market pricing of subordinated notes. Unrealized appreciation on the SLF LLC equity interests was driven by positive credit-related adjustments associated with SLF’s investment portfolio as well the offsetting impact of the pricing on the subordinated notes.

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For the three months ended December 31, 2012, we had realized gains on investments totaling $0.1 million as the result of the sale of portfolio company investments for total proceeds of $14.0 million.

During the three months ended December 31, 2012, we had $5.8 million in unrealized depreciation on 94 portfolio company investments, which was partially offset by $5.4 million in unrealized appreciation on 47 portfolio company investments. Unrealized depreciation during the three months ended December 31, 2012 primarily resulted from the accretion of discounts and negative credit related adjustments which caused a reduction in fair value. Unrealized appreciation during the three months ended December 31, 2012 resulted from an increase in fair value primarily due to the rise in market prices and a reversal of prior period unrealized depreciation.

Comparison of the Years Ended September 30, 2013, September 30, 2012 and September 30, 2011

Consolidated operating results for the years ended September 30, 2013, 2012 and 2011 are as follows:

		For the years ended September 30,												Variances
		2013				2012				2011				2013 vs. 2012				2012 vs. 2011
		(In thousands)
Interest income		$	73,960			$	52,393			$	34,076			$	21,567			$	18,317
Income from amortization of discounts and origination fees			7,594				5,089				5,074				2,505				15
Interest income from subordinated notes of SLF			23				—				—				23				—
Dividend income			2,197				377				—				1,820				377
Total investment income			83,774				57,859				39,150				25,915				18,709
Total expenses			39,379				29,983				16,334				9,396				13,649
Net investment income			44,395				27,876				22,816				16,519				5,060
Net realized (losses) gains on investments and derivative instruments			(1,363	)			(3,372	)			2,037				2,009				(5,409	)
Net change in unrealized appreciation (depreciation) on investments, derivative instruments and secured borrowings			3,488				7,256				(3,514	)			(3,768	)			10,770
Net income		$	46,520			$	31,760			$	21,339			$	14,760			$	10,421
Average earning portfolio company investments, at fair value		$	810,880			$	564,323			$	406,881			$	246,557			$	157,442
Average debt outstanding(1)		$	378,843			$	306,969			$	201,294			$	71,874			$	105,675

Net income can vary substantially from period to period for various reasons, including the recognition of realized gains and losses and unrealized appreciation and depreciations. As a result, annual comparisons of net income may not be meaningful.

Investment Income

Investment income increased from 2012 to 2013 by $25.9 million as a result of an increase in the average earning investment balance of $246.6 million, an increase in prepayment fees of $1.3 million and an increase in dividend income of $1.8 million, which were partially offset by a decline in the weighted average investment income (which includes interest income and amortization of fees and discounts) yield of 0.1%. Investment income increased from 2011 to 2012 by $18.7 million as a result of an increase in the average earning investment balance, which is the annual average balance of accruing loans in our investment portfolio, of $157.4 million as well as an increase in the weighted average investment income (which includes interest income and amortization of fees and discounts) yield of 0.3%.

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The decrease in the yield from 2012 to 2013 was driven primarily by the change in asset mix of our portfolio. Higher yielding subordinated debt investments decreased from 10.0% of the portfolio as of September 30, 2012 to 2.2% of the portfolio as September 30, 2013 while lower yielding one stop investments increased from 30.5% of the portfolio as of September 30, 2012 to 54.1% of the portfolio as of September 30, 2013. The increase in the yield from 2011 to 2012 was driven primarily by the change in asset mix of our portfolio. Higher yielding second lien and one stop investments increased from 43.5% of the portfolio as of September 30, 2011 to 46.1% of the portfolio as of September 30, 2012.

The interest income yield (which excludes income resulting from amortization of fees and discounts) by security type for the years ended September 30, 2013, 2012 and 2011 was as follows:

		For the years ended September 30,
		2013				2012				2011
Senior secured			7.4	%			7.1	%			7.1	%
One stop			8.8	%			9.4	%			9.2	%
Second lien(1)			11.7	%			11.0	%			12.0	%
Subordinated debt			16.8	%			14.0	%			13.0	%
Subordinated notes of SLF(2)			4.3	%			N/A				N/A

Interest rate yields on senior secured, one stop, second lien and fixed rate subordinated debt have fluctuated, as shown in the table above, for the year ended September 30, 2013 as compared to the year ended September 30, 2012. The increase in yields on second lien and subordinated debt is attributed to the inclusion of $0.6 million and $1.2 million, respectively, of prepayment fees, while we have seen interest rate compression on new investments, when excluding prepayment fees.

For the years ended September 30, 2012 and 2011, interest rate yields on senior secured, one stop, second lien and fixed rate subordinated debt remained relatively consistent as pricing on new originations remained relatively consistent over those two years. For additional details on investment yields and asset mix, refer to “— Portfolio Composition, Investment Activity and Yield.”

Expenses

The following table summarizes our expenses:

		For the years ended September 30,												Variances
		2013				2012				2011				2013 vs. 2012				2012 vs. 2011
		(In thousands)
Interest and other debt financing expenses		$	12,427			$	10,781			$	6,550			$	1,646			$	4,231
Base management fee			11,749				8,495				5,789				3,254				2,706
Incentive fee			9,844				6,228				348				3,616				5,880
Professional fees			2,200				2,231				2,204				(31	)			27
Administrative service fee			2,625				1,713				837				912				876
General and administrative expenses			534				535				606				(1	)			(71	)
Total expenses		$	39,379			$	29,983			$	16,334			$	9,396			$	13,649

Interest and other debt financing expenses increased from the year ended September 30, 2012 to the year ended September 30, 2013 primarily due to an increase in the weighted average of outstanding borrowings from $307.0 million for the year ended September 30, 2012 to $378.8 million for the year ended September 30, 2013. We increased our use of debt under the Debt Securitization and SBA debentures through the SBICs to $203.0 million and $169.5 million, respectively, as of September 30, 2013 and outstanding balances of $174.0 million and $123.5 million, respectively, as of September 30, 2012 while reducing our use of debt through the Credit Facility, which had outstanding balances of $29.6 million and $54.8 million as of September 30, 2013 and 2012, respectively. The increase in interest and debt financing expenses was partially

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offset by a decrease in the effective average annual interest rate on our outstanding debt from 3.5% for the year ended September 30, 2012 to 3.3% for the year ended September 30, 2013.

Interest and other debt financing expenses increased from the year ended September 30, 2011 to the year ended September 30, 2012 primarily due to an increase in the weighted average of outstanding borrowings from $201.3 million for the year ended September 30, 2011 to $307.0 million for the year ended September 30, 2012. In addition to the $174.0 million of borrowings under the Debt Securitization that was outstanding for the years ended September 30, 2012 and 2011, we increased our use of debt through GC SBIC IV, L.P., or SBIC IV, and the Credit Facility, which had outstanding balances of $123.5 million and $54.8 million, respectively, as of September 30, 2012 and outstanding balances of $61.3 million and $2.4 million, respectively, as of September 30, 2011. To a lesser extent, the increase in interest expense was also caused by an increase in the effective average interest rate on our outstanding debt from 3.3% for the year ended September 30, 2011 to 3.5% for the year ended September 30, 2012.

The base management fee increased as a result of a sequential increase in average assets from 2011 to 2013. The administrative service fee increased from 2011 to 2013 due to an increase in costs associated with servicing a growing investment portfolio. In addition, as permitted under the Administration Agreement, beginning January 1, 2012, the allocable portion of the cost of our chief compliance officer and chief financial officer and their respective staffs were charged to us, which was also partially related to the increase in the administrative service fee from the year ended September 30, 2011 to the year ended September 30, 2012. These costs are permitted to be charged under the terms of the Administration Agreement but were previously being waived by the Administrator.

The incentive fee increased by $5.9 million and $3.6 million from the years ended September 30, 2011 and September 30, 2012 to the years ended September 30, 2012 and 2013, respectively. The incentive fee increases are net of irrevocable incentive fee waivers by GC Advisors of $0.3 million and $0.6 million for the years ended September 30, 2013 and September 30, 2012, respectively. Incentive fee expense increased in the year ended September 30, 2013 primarily due to the increase in our average earning investment balances and related investment income. Incentive fee expense increased in the year ended September 30, 2012 also due to an increase in our average earning investment balances and related investment income. In addition, the incentive fee expense for the year ended September 30, 2011 was relatively small as our Pre-Incentive Fee Net Investment Income did not exceed or only marginally exceeded the hurdle rate as defined in the Investment Advisory Agreement.

The incentive fee waiver of $0.6 million for the year ended September 30, 2012 was attributable to interest spread payments from a total return swap, or TRS. As described in the “Net Realized and Unrealized Gains and Losses” section below, we entered into the TRS, with Citibank, N.A., or Citibank, for the purpose of gaining economic exposure to a portfolio of broadly syndicated loans. We subsequently terminated the TRS on April 11, 2012. For the periods ending September 30, 2011 and prior, we had included interest spread payments, which represent the difference between the interest and fees received on the referenced assets underlying the TRS and the interest paid to Citibank on the settled notional value of the TRS, from the TRS in the capital gains component of the incentive fee calculation as this is consistent with GAAP which records such payments in net realized gains/(losses) on derivative instruments in the consolidated statement of operations. However, we changed our methodology in the first fiscal quarter of fiscal year 2012 pursuant to discussions with the Staff resulting in the TRS interest spread payments being included in the income component of the incentive fee calculation.

For the year ended September 30, 2012, we received interest spread payments from the TRS of $2.6 million. For the three months ended December 31, 2011, including the interest spread payments from the TRS in the income component of the incentive fee calculation caused an increase in the incentive fee by $0.6 million. Upon reviewing the incentive fee calculation and the treatment of the interest spread payments from the TRS, GC Advisors irrevocably waived the incremental portion of the incentive fee attributable from the TRS interest spread payments for the three months ended December 31, 2011.

The Administrator pays for certain expenses incurred by us. These expenses are subsequently reimbursed in cash. Total expenses reimbursed by us to the Administrator for the years ended September 30, 2013, 2012 and 2011 were $1.0 million, $0.5 million and $0.3 million, respectively.

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As of September 30, 2013 and 2012, included in accounts payable and accrued expenses were $0.3 million and $40,000, respectively, for accrued expenses paid on behalf of us by the Administrator.

Net Realized and Unrealized Gains and Losses

The following table summarizes our net realized and unrealized gains (losses) for the periods presented:

		For the years ended September 30,												Variances
		2013				2012				2011				2013 vs. 2012				2012 vs. 2011
		(In thousands)
Net realized (loss) gain on investments		$	(1,363	)		$	(5,467	)		$	1,997			$	4,104			$	(7,464	)
Net realized gain on TRS			—				3,854				40				(3,854	)			3,814
Net realized (loss) on financial futures contracts			—				(1,759	)			—				1,759				(1,759	)
Net realized (loss) gain			(1,363	)			(3,372	)			2,037				2,009				(5,409	)
Unrealized appreciation on investments			17,956				15,632				7,220				2,324				8,412
Unrealized (depreciation) on investments			(14,445	)			(10,362	)			(8,748	)			(4,083	)			(1,614	)
Unrealized (depreciation) on investments in SLF(1)			(74	)			—				—				(74	)			—
Unrealized appreciation on investments in SLF(1)			177				—				—				177				—
Unrealized (depreciation) on secured borrowings			(126	)			—				—				(126	)			—
Unrealized appreciation (depreciation) on TRS			—				1,845				(1,845	)			(1,845	)			3,690
Unrealized appreciation (depreciation) on financial futures contracts			—				141				(141	)			(141	)			282
Net change in unrealized appreciation (depreciation) on investments, investments in SLF, derivative instruments and secured borrowings		$	3,488			$	7,256			$	(3,514	)		$	(3,768	)		$	10,770

For the year ended September 30, 2013, we had $18.0 million in unrealized appreciation on 101 portfolio company investments, which was partially offset by $14.4 million in unrealized depreciation on 108 portfolio company investments. Unrealized depreciation primarily resulted from the amortization of discounts and negative credit related adjustments that caused a reduction in fair value. Unrealized appreciation during the year ended September 30, 2013 resulted from an increase in fair value primarily due to the rise in market prices and a reversal of prior period unrealized depreciation. Additionally, we had $0.1 million in unrealized depreciation on secured borrowing proceeds related to one portfolio company for the year ended September 30, 2013. The unrealized depreciation resulted from the amortization of discounts and the rise in market prices associated with the investments funded by the secured borrowing proceeds.

For the year ended September 30, 2013, we had $0.2 million in unrealized appreciation on our investment in SLF LLC interests, which was partially offset by $0.1 million in unrealized depreciation on our investment in SLF subordinated notes. The unrealized depreciation was the result of the lower yielding contractual rate compared to comparable market pricing of subordinated notes. Unrealized appreciation on the SLF LLC interests was driven by positive credit related adjustments associated with SLF’s investment portfolio as well the offsetting impact of the pricing on the subordinated notes.

We also had $1.4 million in net realized losses on investments during the year ended September 30, 2013 primarily as a result of the sale of a non-accrual investment and the payoff of an under-performing loan.

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For the year ended September 30, 2012, we had $15.6 million in unrealized appreciation on 70 portfolio company investments, which was partially offset by $10.4 million in unrealized depreciation on 74 portfolio company investments. Unrealized depreciation primarily resulted from the amortization of discounts and negative credit related adjustments that caused a reduction in fair value. Unrealized appreciation during the year ended September 30, 2012 resulted from an increase in fair value primarily due to the rise in market prices and a reversal of prior period unrealized depreciation. We also had $5.5 million in realized losses on investments during the year ended September 30, 2012 primarily as a result of the sale of two non-accrual investments.

For the year ended September 30, 2011, we had $8.7 million in unrealized depreciation on 76 portfolio company investments, which was partially offset by $7.2 million in unrealized appreciation on 62 portfolio company investments. Unrealized depreciation primarily resulted from the amortization of discounts and negative credit related adjustments that caused a reduction in fair value. Unrealized appreciation during the year ended September 30, 2011 resulted from an increase in fair value primarily due to the rise in market prices and a reversal of prior period unrealized depreciation.

Termination of the Total Return Swap

On April 11, 2012, we terminated the TRS that we had entered into with Citibank.

The purpose of entering into the TRS was to gain economic exposure to a portfolio of broadly syndicated loans. Generally, under the terms of a total return swap, one party agrees to make periodic payments to another party based on the change in the market value of the assets referenced by the total return swap, which may include a specified security, basket of securities or securities indices during the specified period, in return for periodic payments based on a fixed or variable interest rate.

For the years ended September 30, 2012 and 2011, the change in the fair value of the TRS was $1.8 million and $(1.8) million, respectively. Realized gains on the TRS for the year ended September 30, 2012 were $3.9 million, which consisted of spread interest income of $2.7 million and a realized gain of $1.2 million on the sale of the referenced loans. Realized gains on the TRS for the year ended September 30, 2011 were $40,000, which consisted of spread interest income of $44,000 and a realized loss of $(4,000) on the sale of the referenced loans. As of September 30, 2011, the fair value of the TRS was $(1.8) million comprised of spread interest income of $0.6 million and an unrealized loss on the referenced loans of $(2.4) million.

Cash collateral of $19.9 million that had secured the obligations to Citibank under the TRS was returned to us during the year ended September 30, 2012 and was used to fund new middle market debt and equity investments.

Ten-Year U.S. Treasury Futures Contracts

In September of 2012, we sold our remaining ten-year U.S. Treasury futures contracts. We had entered into the futures contracts to mitigate our exposure to adverse fluctuation in interest rates related to our SBA debentures. The cash collateral underlying the futures contracts was returned to us.

Based on the daily fluctuation of the fair value of the futures contracts, we recorded an unrealized gain or loss equal to the daily fluctuation in fair value. Upon maturity or settlement of the futures contracts, we realized a gain or loss based on the difference of the fair value of the futures contracts at inception and the fair value of the futures contracts at settlement or maturity.

For the years ended September 30, 2012 and 2011, the realized loss on settlement of futures contracts was $(1.8) million and zero, respectively, and the change in unrealized appreciation (depreciation) related to the futures contracts was $0.1 million and $(0.1) million, respectively.

Liquidity and Capital Resources

For the three months ended December 31, 2013, we experienced a net increase in cash and cash equivalents of $15.6 million. During the period we used $138.9 million in operating activities, primarily as a result of fundings of portfolio investments of $256.2 million. This was partially offset by proceeds from principal payments and sales of portfolio investments of $103.6 million and net investment income of

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$13.3 million. During the same period, cash used in investment activities of $1.4 million was driven by the increase in restricted cash and cash equivalents. Lastly, cash provided by financing activities was $155.9 million, primarily driven by borrowings on debt of $215.4 million that were partially offset by repayments of debt of $50.2 million and distributions paid of $13.1 million.

For the three months ended December 31, 2012, we experienced a net increase in cash and cash equivalents of $7.5 million. During the same period, we used $72.5 million in operating activities, primarily as a result of fundings of portfolio investments of $235.3 million. This was partially offset by proceeds from principal payments and sales of portfolio investments of $145.6 million and net investment income of $9.6 million. During the same period, cash used in investment activities of $2.2 million was driven by the change in restricted cash and cash equivalents. Lastly, cash provided by financing activities was $82.2 million, primarily due to borrowings on debt of $107.7 million and proceeds from shares sold from a public offering of $43.8 million, partially offset by repayments of debt of $59.5 million and distributions paid of $8.8 million.

For the year ended September 30, 2013, we experienced a net increase in cash and cash equivalents of $2.4 million. During the period we used $297.6 million in operating activities, primarily as a result of fundings of portfolio investments of $669.2 million. This was partially offset by proceeds from principal payments and sales of portfolio investments of $336.2 million and net investment income of $44.4 million. During the same period, cash used in investment activities of $1.4 million was driven by the increase in restricted cash and cash equivalents. Lastly, cash provided by financing activities was $301.4 million, primarily due to net proceeds from four equity offerings of an aggregate of $280.9 million and borrowings on debt of $376.4 million, partially offset by repayments of debt of $316.6 million and distributions paid of $43.3 million.

For the year ended September 30, 2012, we experienced a net decrease in cash and cash equivalents of $32.5 million. During the period we used $158.3 million in operating activities, primarily as a result of fundings of portfolio investments of $395.6 million. This was partially offset by proceeds from principal payments and sales of portfolio investments of $191.5 million, return of cash collateral on deposit with custodian of $21.2 million and net investment income of $27.9 million. During the same period, cash used in investment activities of $13.6 million was driven by the change in restricted cash and cash equivalents. Lastly, cash provided by financing activities was $139.4 million, primarily due to net proceeds from the follow-on equity offering of $57.2 million and borrowings on debt of $178.3 million, partially offset by repayments of debt of $63.7 million and distributions paid of $23.9 million.

For the year ended September 30, 2011, we experienced a net decrease in cash and cash equivalents of $14.9 million. During the period we used $118.1 million in operating activities, primarily as a result of fundings of portfolio investments of $326.3 million. This was partially offset by proceeds from principal payments and sales of portfolio investments of $217.9 million and net investment income of $22.8 million. During the same period, cash provided by investment activities of $8.4 million was driven by the change in restricted cash and cash equivalents. Lastly, cash provided by financing activities was $94.9 million, primarily due to net proceeds from the follow-on equity offering of $59.4 million and borrowings on debt of $63.7 million, partially offset by distributions paid of $23.9 million.

As of December 31, 2013 and September 30, 2013 and 2012, we had cash and cash equivalents of $31.9 million, $16.3 million and $13.9 million, respectively. In addition, we had restricted cash and cash equivalents of $39.8 million, $38.4 million and $37.0 million as of December 31, 2013 and September 30, 2013 and 2012, respectively. Cash and cash equivalents are available to fund new investments, pay operating expenses and pay distributions. As of December 31, 2013, $16.4 million of our restricted cash and cash equivalents could be used to fund new investments that meet the investment guidelines established in the Debt Securitization, which are described in further detail in Note 7 to our consolidated financial statements, and for the payment of interest expense on the notes issued in the Debt Securitization. $15.4 million of such restricted cash and cash equivalents can be used to fund investments that meet the guidelines under the Credit Facility as well as for the payment of interest expense and revolving debt of the Credit Facility. The remaining $8.0 million of restricted cash and cash equivalents can be used to fund new investments that meet the

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regulatory and investment guidelines established by the SBA for our SBICs, which are described in further detail in Note 7 to our consolidated financial statements, and for interest expense and fees on our outstanding SBA debentures.

As of each of December 31, 2013, September 30, 2013 and September 30, 2012, we had outstanding commitments to fund investments totaling $94.3 million, $76.3 million and $56.5 million, respectively. These amounts may or may not be funded to the borrowing party now or in the future. The unfunded commitments relate to loans with various maturity dates, but the entire amount was eligible for funding to the borrowers as of each of December 31, 2013, September 30, 2013 and 2012, subject to the terms of each loan’s respective credit agreement.

On February 15, 2013, we amended the Debt Securitization to issue an additional $29.0 million in Class A Notes, $2.0 million in Class B Notes and $19.0 million in Subordinated Notes. On November 15, 2013, Holdings sold the $12.0 million in Class B Notes of the Debt Securitization and on November 20, 2013, the transaction closed and proceeds of $12.0 million were received. The Class A Notes are included in the December 31, 2013, September 30, 2013 and September 30, 2012 consolidated statements of financial condition as debt of Golub Capital BDC. The Class B Notes are included in the December 31, 2013 consolidated statements of financial condition as debt of the Company and at September 30, 2013 and September 30, 2012 are eliminated in consolidation. As of December 31, 2013, September 30, 2013 and September 30, 2012, the Subordinated Notes were eliminated in consolidation. As of December 31, 2013, September 30, 2013 and September 30, 2012, we had outstanding debt under the Debt Securitization of $215.0 million, $203.0 million and $174.0 million, respectively.

As of December 31, 2013 and September 30, 2013, subject to leverage and borrowing base restrictions, we had approximately $84.1 million and $70.4 million, respectively, available for additional borrowings on the Credit Facility. As of December 31, 2013, subject to leverage and borrowing base restrictions, we had $15.0 million available for additional borrowings on the Revolver. No borrowings under the Revolver were outstanding as of September 30, 2013.

On October 31, 2013, the Credit Facility was amended to, among other things, increase the size of the Credit Facility from $100 million to $250 million, extend the expiration of the reinvestment period from November 21, 2013 to October 21, 2014 and extend the stated maturity date from October 20, 2017 to October 22, 2018.

Under present SBIC regulations, the maximum amount of SBA-guaranteed debentures that may be issued by multiple licensees under common management is $225.0 million and the maximum amount that a single SBIC licensee may issue is $150.0 million. As of December 31, 2013, SBIC IV and GC SBIC V, L.P., or SBIC V, had $150.0 million and $46.3 million of outstanding SBA-guaranteed debentures, respectively, leaving incremental borrowing capacity of $28.7 million for SBIC V, under present SBIC regulations. As of September 30, 2013, SBIC IV and SBIC V had $146.3 million and $33.2 million of outstanding SBA-guaranteed debentures, respectively. As of December 31, 2013, we had invested 18.3% and 5.8% of our assets in SBIC IV and SBIC V, respectively.

In accordance with the 1940 Act, with certain limited exceptions, we are only allowed to borrow amounts such that our asset coverage, as defined in the 1940 Act, is at least 200% after such borrowing. On September 13, 2011, we received exemptive relief from the SEC allowing us to modify the asset coverage requirement to exclude the SBA debentures from this calculation. As such, our ratio of total consolidated assets to outstanding indebtedness may be less than 200%. This provides us with increased investment flexibility but also increases our risks related to leverage. As of December 31, 2013, our asset coverage for borrowed amounts was 266.9% (excluding the SBA debentures).

Although we expect to fund the growth of our investment portfolio through the net proceeds from future securities offerings and through our dividend reinvestment plan as well as future borrowings, to the extent permitted by the 1940 Act, we cannot assure you that our efforts to raise capital will be successful. In addition to capital not being available, it also may not be available on favorable terms.

We believe that our existing cash and cash equivalents and available borrowings as of December 31, 2013 will be sufficient to fund our anticipated requirements through at least December 31, 2014.

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Debt Securitization

In the Debt Securitization that we completed on July 16, 2010, as amended on February 15, 2013, the Securitization Issuer issued an aggregate of $350 million of notes and the aggregate $203 million of Class A Notes and the aggregate of $12 million of Class B Notes are secured by the assets of the Securitization Issuer. We structured the initial transactions and the subsequent amendment of the Debt Securitization with the assistance of Wells Fargo Securities, LLC, for which Wells Fargo Securities, LLC received structuring and placement fees. The transactions were executed through a private placement of an aggregate of $203 million of Aaa/AAA Class A Notes. The Class A Notes bear interest at a rate of three-month LIBOR plus 1.74%. The aggregate of $12 million face amount of Class B Notes bear interest at a rate of three-month LIBOR plus 2.40%, and the aggregate of $135 million face amount of Subordinated Notes do not bear interest. In partial consideration for the loans transferred to the Securitization Issuer as part of the Debt Securitization, Holdings retained all of the Class B and Subordinated Notes, which totaled $147 million, and it retained all of the membership interests in the Securitization Issuer, which Holdings initially purchased for $250. All of the notes are scheduled to mature on July 20, 2023. On November 15, 2013, Holdings sold the $12 million of Class B Notes of the Debt Securitization and on November 20, 2013, the transaction closed and proceeds of $12 million were received. As discussed below, in accordance with ASC Topic 860, Transfers and Servicing, we are required to consolidate the special purpose vehicle used in an asset-backed securitization and treat the transaction as a secured borrowing. GC Advisors is our investment adviser and also the collateral manager for the Securitization Issuer, which results in the “continued involvement” of us in the business of the Securitization Issuer. In addition, the investments of the Securitization Issuer constitute a substantial percentage of our total assets. As a result of this continued involvement and the fact that the investments of the Securitization Issuer constitute a substantial percentage of our assets, we consolidate the financial statements of the Securitization Issuer.

An important aspect of a debt securitization transaction is that the purchaser of the notes must become comfortable through their due diligence investigation that the sale and/or contribution of income producing assets into a special purpose entity would be considered a true sale and/or contribution or, in other words, that as a result of such sale and/or contribution, the originator no longer owns the income producing assets. This structure seeks to reduce risk to noteholders by insulating them from the credit and bankruptcy risks faced by the originator. The structure of any debt securitization is in large part intended to prevent, in the event of a bankruptcy, the consolidation in the originator’s bankruptcy case of the special purpose entity with the operations of the originator, based on equitable principles, and the noteholders must become comfortable with this analysis. As a result of this structure, debt securitization transactions frequently achieve lower overall borrowing costs than would be achieved if the borrowing had been structured as a traditional secured lending transaction.

In a typical sale transaction, the purchaser exchanges an asset for cash or some other asset, whereas in a contribution transaction, the contributor typically exchanges an asset for securities issued by the purchaser. In the Debt Securitization, we transferred the portfolio loans that comprise the collateral to Holdings in a transaction that was a partial sale and a partial capital contribution. Holdings then transferred these same portfolio loans to the Securitization Issuer in a transfer that was also a partial sale and a partial capital contribution. To the extent that we received cash proceeds from Holdings in consideration for the portfolio loans transferred to Holdings, such portion of the transfer constituted a sale. To the extent that Holdings received cash proceeds, Class B Notes and Subordinated Notes from the Securitization Issuer in consideration for the portfolio loans transferred by it to the Securitization Issuer, such portion of the transfer also constituted a sale. By contrast, to the extent that we received cash proceeds from Holdings equal to or less than the fair value of the portfolio loans transferred by us to Holdings, the difference between the fair value of such portfolio loans and the cash we received from Holdings was deemed to be a contribution to the capital of Holdings pursuant to the terms of the governing master loan sale agreement. Likewise, to the extent that the cash proceeds, Class B Notes and Subordinated Notes received by Holdings from the Securitization Issuer was less than the fair value of the portfolio loans transferred from Holdings to the Securitization Issuer, such portion of the transfer was deemed to be a contribution to the capital of the Securitization Issuer by Holdings pursuant to the terms of such master loan sale agreement. In these transactions, there were no material differences between selling and/or contributing loans or participations, viewed from the perspective of the Securitization Issuer’s ownership interests therein, as all of the ownership interests in such loans and

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participations were transferred to, and are now owned by, the Securitization Issuer under the terms of the master loan sale agreement, irrespective of whether such loans or participations were sold or contributed from us to Holdings and from Holdings to the Securitization Issuer.

GC Advisors, as collateral manager for the Securitization Issuer, selected the senior secured and second lien loans (or participations therein) that were transferred to the Securitization Issuer. The senior secured and second lien loans (or participations therein) were selected in accordance with the criteria set forth in the Debt Securitization documents. These are primarily objective requirements determined by the constraints of the market for collateralized debt obligations, and are generally designed to comply with regulations governing commercial lending and similar financing activities in the United States and the requirements of Rule 3a-7 under the 1940 Act.

The Subordinated Notes are limited recourse, unsecured obligations of the Securitization Issuer payable solely from payments made under the portfolio loans and other assets held by the Securitization Issuer and, in the event of a portfolio loan event of default, from the proceeds of any liquidation of the collateral underlying such portfolio loans. Additionally, for as long as the Class A Notes and Class B Notes remain outstanding, holders of the Subordinated Notes will not generally be entitled to exercise remedies under the indenture. As an unsecured class of notes, the interests and rights of holders of the Subordinated Notes in and to the portfolio loans and other assets owned by the Securitization Issuer are subject to the prior claims of secured creditors of the Securitization Issuer and are potentially subject to or will rank equally with the claims of other unsecured creditors of the Securitization Issuer.

The Class B Notes are subordinated in right of payment on each payment date to prior payments on the Class A Notes and to certain amounts payable by the Securitization Issuer as administrative expenses. The Subordinated Notes are subordinated in right of payment on each payment date to payments on the Class A Notes and the Class B Notes as well as to certain amounts payable by the Securitization Issuer as administrative expenses and to the claims of other unsecured creditors of the Securitization Issuer.

The Securitization Issuer may only make payments on such securities to the extent permitted by the payment priority provisions of the indenture governing the notes, which generally provides that principal payments on the Class B Notes and the Subordinated Notes may not be made on any payment date unless all amounts owing under the Class A Notes are paid in full. In addition, if the Securitization Issuer does not meet the asset coverage tests or the interest coverage test set forth in the documents governing the Debt Securitization, cash would be diverted from the Class B Notes and the Subordinated Notes to first pay the Class A Notes in amounts sufficient to cause such tests to be satisfied. In addition, no payments may be made on the membership interests in any period until all required payments in respect of the Class A Notes, the Class B Notes and Subordinated Notes have been paid in full. Therefore, to the extent that any losses are suffered by noteholders as a result of losses on the portfolio loans and other assets owned by the Securitization Issuer, such losses will be borne in the first instance by the holders of the membership interests, then by the Subordinated Notes, then by the holders of the Class B Notes and lastly by the holders of the Class A Notes.

We believe that the Debt Securitization benefits from “internal” credit enhancement, meaning that holders of more senior classes of notes issued by the Securitization Issuer benefit from the terms of subordination applicable to the more junior classes of notes issued by the Securitization Issuer. Thus, the Class A Notes enjoy the benefit of credit enhancement effectively provided by the subordination provisions of the Class B Notes and the Subordinated Notes. Likewise, the Class B Notes enjoy the benefit of credit enhancement effectively provided by the subordination provisions of the Subordinated Notes.

The Debt Securitization documents expressly provide that we and our subsidiaries (other than the Securitization Issuer) are not, and cannot be held, liable for any shortfall in payments or any defaults on any of the classes of notes issued by the Securitization Issuer in connection with the Debt Securitization because such obligations are the obligations of the Securitization Issuer only, and the sole recourse for such obligations is to the collateral owned by the Securitization Issuer rather than our assets or the assets of Holdings.

Under the terms of the documents related to the Debt Securitization, recourse to us and to Holdings is limited and generally consistent with the terms of other similarly structured finance transactions. Under the

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master loan sale agreement with respect to the Debt Securitization, (1) we sold and/or contributed to Holdings all of our ownership interest in certain of our portfolio loans and participations for the purchase price and other consideration set forth in the master loan sale agreement, and (2) Holdings, in turn, sold and/or contributed to the Securitization Issuer all of its ownership interest in such portfolio loans and participations for the purchase price and other consideration set forth in the master loan sale agreement. These transfers were structured by their terms to provide limited recourse to us by the Securitization Issuer relating to certain representations and warranties with respect to certain characteristics including title and quality of the portfolio loans that were transferred to the Securitization Issuer. If we breached these representations and warranties and such breach materially and adversely affected the value of the portfolio loans or the interests of holders of notes issued by the Securitization Issuer, then we could be required, within 30 days of notice or our knowledge of such breach, to (a) cure such breach in all material respects, (b) repurchase the portfolio loan or loans subject to such breach or (c) remove the portfolio loan or loans subject to such breach from the pool of loans and other assets held by the Securitization Issuer and substitute a portfolio loan or loans that meet the requirements of the Debt Securitization documents. This repurchase and substitution obligation of us constitutes the sole remedy available against us for any breach of a representation or warranty related to the portfolio loans transferred to the Securitization Issuer.

A collateral management agreement is an agreement entered into between an adviser and a debt securitization vehicle or similar issuer and sets forth the terms and conditions pursuant to which the adviser will provide advisory and/or management services with respect to the client’s securities portfolio. Under the collateral management agreement between GC Advisors and the Securitization Issuer, GC Advisors’ duties include (1) selecting portfolio loans to be acquired and selecting the portfolio loans to be sold or otherwise disposed of by the Securitization Issuer, (2) reinvesting in other portfolio loans, where appropriate, (3) instructing the trustee with respect to any acquisition, disposition or tender of, or offer with respect to, a portfolio loan or other assets received in the open market or otherwise by the Securitization Issuer and (4) performing all other tasks, and taking all other actions, that are specified in, or not inconsistent with, the duties of the collateral manager.

The Debt Securitization provides a number of benefits to us, most notably an ability on our part to finance new portfolio loans acquired by the Securitization Issuer at an attractive cost.

We have no direct ability to enforce the payment obligations on portfolio loans held by the Securitization Issuer as part of the Debt Securitization. The contribution of loans and participations did not constitute a realization event under the Investment Advisory Agreement, and no incentive fee was earned as a result of the Debt Securitization.

Under the Debt Securitization, the Securitization Issuer contracts with GC Advisors as the collateral manager regarding the portfolio loans held by the Securitization Issuer. GC Advisors, in its role as collateral manager for the Securitization Issuer, is the party responsible for enforcing payment obligations on portfolio loans of the Securitization Issuer as well as exercising rights to vote on amendments to and waivers of provisions in the credit agreements of portfolio companies.

A portion of the proceeds from the Debt Securitization were used to originate and acquire additional portfolio loans. Such additional portfolio loans are held by us directly or sold and/or contributed into one of our subsidiaries, which enabled us to borrow additional amounts in securitization or other structures using such portfolio loans as collateral. We believe that the Debt Securitization enables us to deploy our capital efficiently and to increase our capacity to provide financing for small to medium-sized businesses in our target market.

The Class B Notes may be transferred to: (1) “qualified institutional buyers,” as that term is defined in Rule 144A under the Securities Act, who are also “qualified purchasers” as that term is defined in Section 2(a)(51) of the 1940 Act; (2) to a limited number of other institutional accredited investors within the meaning of Rule 501(a)(1), (2), (3) or (7) of Regulation D under the Securities Act, who are also qualified purchasers; and (3) outside of the United States to qualified purchasers in compliance with Regulation S under the Securities Act. The Subordinated Notes may be transferred only to persons or entities that are either (x) qualified institutional buyers or (y) institutional accredited investors and, in either case, are qualified purchasers. By their terms, the Subordinated Notes may only be owned by U.S. persons. No Subordinated

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Note (or interests in such notes) may be acquired or owned by any person that is classified for U.S. federal income tax purposes as a disregarded entity (unless the beneficial owner of such person is a corporation that is not a subchapter S corporation or otherwise taxable as a corporation), partnership, subchapter S corporation or grantor trust unless such person obtains a legal opinion to the effect that such acquisition or ownership will not cause the Securitization Issuer to be treated as a publicly traded partnership taxable as a corporation.

Membership interests in the Securitization Issuer may be transferred only with the written consent of the designated manager of the Securitization Issuer, which is us. Even with such consent, such membership interests may not be transferred unless, simultaneously with the transfer of such membership interests: (1) a proportionate amount of the Subordinated Notes are transferred so that the ratio of the percentage interest of the Subordinated Notes so transferred to all Subordinated Notes and the ratio of the percentage interest of the membership interests so transferred to all membership interests are equal, (2) the transfers of membership interests and the Subordinated Notes referred to in this paragraph are made to the same person or entity, and (3) the percentage interest of the membership interests and the Subordinated Notes, respectively, so transferred is no less than ten percent. The membership interests and the Subordinated Notes must at all times be held in such proportion that the ratio set forth in clause (1) is always met.

As of September 30, 2013 and 2012, the Securitization Issuer held investments in 91 and 81 portfolio companies with a total fair value of $343.2 million, $290.1 million, respectively. The pool of loans in the Debt Securitization must meet certain requirements, including asset mix and concentration, collateral coverage, term, agency rating, minimum coupon, minimum spread and sector diversity requirements.

SBIC Licenses

On August 24, 2010, SBIC IV received approval for a license from the SBA to operate as an SBIC. On December 5, 2012, SBIC V received a license from the SBA to operate as an SBIC. As our wholly-owned subsidiaries, SBIC IV and SBIC V may rely on an exclusion from the definition of “investment company” under the 1940 Act. As such, these subsidiaries do not elect to be regulated as business development companies under the 1940 Act. SBIC IV and SBIC V have an investment objective substantially similar to ours and make similar types of investments in accordance with SBIC regulations. As SBICs, SBIC IV and SBIC V are subject to a variety of regulations and oversight by the SBA concerning the size and nature of the companies in which they may invest as well as the structures of those investments.

Prior to SBIC IV and SBIC V obtaining approval from the SBA, Golub Capital managed two SBICs licensed by the SBA for more than 14 years. The SBIC licenses allow our SBICs to incur leverage by issuing SBA-guaranteed debentures, subject to the issuance of a capital commitment and certain approvals by the SBA and customary procedures. These debentures are non-recourse to us, have interest payable semi-annually and a ten-year maturity. The interest rate is fixed at the time of issuance at a market-driven spread over U.S. Treasury Notes with ten-year maturities and is generally lower than rates on comparable bank and other debt. Under the regulations applicable to SBICs, an SBIC may have outstanding debentures guaranteed by the SBA generally in an amount of up to twice its regulatory capital, which generally equates to the amount of its equity capital. SBIC IV and SBIC V will be subject to regulation and oversight by the SBA, including requirements with respect to maintaining certain minimum financial ratios and other covenants.

SBIC IV and SBIC V may each borrow up to two times the amount of its regulatory capital, subject to customary regulatory requirements. As of December 31, 2013, we had committed and funded $75.0 million to SBIC IV, and SBIC IV had SBA-guaranteed debentures of $150.0 million outstanding that mature between March 2021 and September 2023. As of December 2013, we had committed $37.5 million and funded $26.1 million to SBIC V, and SBIC V had SBA-guaranteed debentures of $46.3 million outstanding that mature between September 2023 and March 2024.

On September 13, 2011, we received exemptive relief from the SEC allowing us to modify the asset coverage requirement under the 1940 Act to exclude SBA debentures from this calculation. As such, our ratio of total consolidated assets to outstanding indebtedness may be less than 200%. This provides us with increased investment flexibility, but also increases our risks related to leverage.

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Revolving Credit Facility

On July 21, 2011, Funding, our wholly owned subsidiary, entered into the $75.0 million senior, secured revolving Credit Facility with Wells Fargo Securities, LLC, as administrative agent and Wells Fargo Bank, N.A., as lender. In December 2012, the Credit Facility was amended to increase the size of the Credit Facility from $75.0 million to $150.0 million. In March 2013, the Credit Facility was amended to decrease the size of the Credit Facility from $150.0 million to $100.0 million. In October 2013, Funding entered into the Credit Facility Amendment, which, among other things, (a) increased the size of the Credit Facility from $100 million to $250 million, (b) extended the expiration of the reinvestment period to October 21, 2014, during which period Funding, subject to certain conditions, may make borrowings under the facility and (c) extended the stated maturity date from October 20, 2017 to October 22, 2018.

The period from the closing date until October 21, 2014 is referred to as the reinvestment period. All amounts outstanding under the Credit Facility are required to be repaid by October 22, 2018. Through the reinvestment period, the Credit Facility bears interest at one-month LIBOR plus 2.25% per annum. After the reinvestment period, the rate will reset to LIBOR plus 2.75% per annum for the remaining term of the Credit Facility. In addition to the stated interest expense on the Credit Facility, the Company is required to pay a fee of 0.50% per annum on any unused portion of the Credit Facility up to $60.0 million and 2.00% on any unused portion in excess of $60.0 million. The Credit Facility is secured by all of the assets held by Funding, and the Company has pledged its interests in Funding as collateral to Wells Fargo Bank, N.A., as the collateral agent, under an ancillary agreement to secure the obligations of the Company as the transferor and servicer under the Credit Facility. Both the Company and Funding have made customary representations and warranties and are required to comply with various covenants, reporting requirements and other customary requirements for similar credit facilities. Borrowing under the Credit Facility is subject to the leverage restrictions contained in the 1940 Act.

As of December 31, 2013 and September 30, 2013 and 2012, the Company had outstanding debt under the Credit Facility of $165.9 million, $29.6 million and $54.8 million, respectively. As of December 31, 2013 and September 30, 2013 and 2012, subject to leverage and borrowing base restrictions, we had approximately $84.1 million, $70.4 million and $20.2 million, respectively, available for additional borrowings on the Credit Facility.

We plan to transfer certain loans and debt securities we have originated or acquired from time to time to Funding through a purchase and sale agreement and may cause Funding to originate or acquire loans in the future, consistent with our investment objectives.

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Portfolio Composition, Investment Activity and Yield

As of December 31, 2013 and September 30, 2013 and 2012, we had investments in 139, 135 and 121 portfolio companies, respectively, with a total value of $1,147.2 million, $1,019.8 million and $672.9 million, respectively.

The following table shows the asset mix of our new origination commitments for the three months ended December 31, 2013 and 2012:

		For the three months ended December 31,
		2013								2012
		(In thousands)				Percentage of Commitments				(In thousands)				Percentage of Commitments
Senior secured		$	35,404				12.3	%		$	58,251				22.2	%
One stop			203,245				70.9				161,000				61.4
Second lien			20,534				7.2				39,410				15.0
Subordinated notes in SLF(1)			24,216				8.4				—				—
LLC equity interests in SLF(1)			1,432				0.5				—				—
Equity securities			1,905				0.7				3,586				1.4
Total new investment commitments		$	286,736				100.0	%		$	262,247				100.0	%

For the three months ended December 31, 2013 and 2012, we had approximately $99.1 million and $131.6 million, respectively, in proceeds from principal payments and return of capital distributions of portfolio companies. For the three months ended December 31, 2013 and 2012, we had sales of securities in three and six portfolio companies aggregating approximately $4.5 million and $14.0 million, respectively, in net proceeds.

The following table shows the asset mix of our new origination commitments for the years ended September 30, 2013, 2012 and 2011:

		Years ended September 30,
		2013								2012								2011
		(In thousands)				Percentage of Commitments				(In thousands)				Percentage of Commitments				(In thousands)				Percentage of Commitments
Senior secured		$	161,849				22.0	%		$	175,089				40.9	%		$	94,442				26.0	%
One stop			420,235				57.1				171,060				39.9				108,374				29.8
Second lien			137,109				18.7				32,636				7.6				50,204				13.8
Subordinated debt			—				—				37,490				8.8				104,065				28.6
Subordinated notes of SLF(1)			4,140				0.6				—				—				—				—
LLC interests of SLF(1)			591				0.1				—				—				—				—
Equity securities			10,891				1.5				11,931				2.8				6,783				1.8
Total new investment commitments		$	734,815				100.0	%		$	428,206				100.0	%		$	363,868				100.0	%

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The following table summarizes portfolio composition and investment activity as of and for the three months ended December 31, 2013 and 2012 and as of and for the years ended September 30, 2013, 2012 and 2011:

		As of and for the three months ended December 31,								As of and for the years ended September 30,
		2013				2012				2013				2012				2011
		(In thousands)
Investments, at fair value		$	1,179,919			$	768,342			$	1,019,811			$	672,910			$	459,827
Investment in SLF, at fair value(1)			32,750				—			$	4,834			$	—			$	—
Number of portfolio investments (at period end)			139				129				135				121				103
New investment fundings		$	256,213			$	235,325			$	669,252			$	395,556			$	326,260
Principal payments and sales of portfolio investments		$	103,570			$	145,609			$	336,154			$	191,509			$	217,884

The following table shows the par, amortized cost and fair value of our portfolio of investments, excluding derivative instruments, by asset class:

		As of December 31, 2013(1)												As of September 30, 2013(1)												As of September 30, 2012(1)
		Par				Amortized Cost				Fair Value				Par				Amortized Cost				Fair Value				Par				Amortized Cost				Fair Value
		(In thousands)
Senior secured:
Performing		$	293,736			$	290,313			$	290,641			$	298,989			$	295,180			$	295,493			$	274,846			$	270,209			$	272,461
Non-accrual(2)			2,586				2,577				5				2,624				2,628				665				5,733				5,527				1,528
One stop:
Performing			708,169				698,446				701,960				558,140				549,855				554,523				267,393				262,876				265,705
Non-accrual(2)			—				—				—				—				—				—				—				—				—
Second lien:
Performing			110,476				108,188				110,955				112,714				111,319				112,873				44,267				42,775				44,108
Non-accrual(2)			—				—				—				384				382				—				589				573				259
Subordinated debt:
Performing			5,131				5,083				5,882				21,562				21,374				22,552				65,989				65,005				65,989
Non-accrual(2)			—				—				—				3,034				3,001				—				2,870				2,810				1,435
Subordinated notes in SLF(3)
Performing			28,356				28,356				27,871				4,140				4,140				4,066				N/A				N/A				N/A
Non-accrual(2)			—				—				—				—				—				—				N/A				N/A				N/A
LLC equity interests in SLF(3)			N/A				4,051				4,879				N/A				591				768				N/A				N/A				N/A
Equity			N/A				29,575				37,726				N/A				29,491				33,705				N/A				20,066				21,425
Total		$	1,148,454			$	1,166,589			$	1,179,919			$	1,001,587			$	1,017,961			$	1,024,645			$	661,687			$	669,841			$	672,910