UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Amendment No. 2)* Under the Securities Exchange Act of 1934 ALTRA HOLDINGS, INC. -------------------------------------------------------------------------------- (Name of Issuer) Common Stock, par value $0.001 per share -------------------------------------------------------------------------------- (Title of Class of Securities) 02208R106 -------------------------------------------------------------------------------- (CUSIP Number) December 31, 2009 -------------------------------------------------------------------------------- (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule 13G is filed: [ ] Rule 13d-1(b) [X] Rule 13d-1(c) [ ] Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). CUSIP No. 02208R106 -------------------------------------------------------------------------------- (1) Names of Reporting Persons: WS Capital, L.L.C. I.R.S. Identification Nos. of Above Persons (entities only): -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member of a Group (See Instructions) (a) [ ] (b) [X] -------------------------------------------------------------------------------- (3) SEC Use Only -------------------------------------------------------------------------------- (4) Citizenship or Place of Organization: Texas -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each Reporting Person (5) Sole Voting Power: 0* -------------------------------------- (6) Shared Voting Power: 85,207* -------------------------------------- (7) Sole Dispositive Power: 0* -------------------------------------- (8) Shared Dispositive Power: 85,207* -------------------------------------- -------------------------------------------------------------------------------- (9) Aggregate Amount Beneficially Owned by Each Reporting Person: 85,207* -------------------------------------------------------------------------------- (10) Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares [ ] -------------------------------------------------------------------------------- (11) Percent of Class Represented by Amount in Row (9): 0.3%* -------------------------------------------------------------------------------- (12) Type of Reporting Person: HC/OO -------------------------------------------------------------------------------- * Based on information set forth in the Quarterly Report on Form 10-Q of Altra Holdings, Inc. (the "Company") for the quarterly period ended September 26, 2009 and filed with the Securities and Exchange Commission on November 4, 2009, as of November 1, 2009, there were 26,623,171 shares of the Company's common stock, par value $0.001 per share (the "Shares"), issued and outstanding. As of December 31, 2009 (the "Reporting Date"), Walker Smith Capital, L.P. ("WSC"), Walker Smith Capital (Q.P.), L.P. ("WSCQP"), Walker Smith International Fund, Ltd. ("WS International") HHMI Investments, L.P. ("HHMI") and GT Global Hedge, L.P. ("GT Global," and collectively with WSC, WSCQP, WS International and HHMI, the "WS Funds") owned in the aggregate 85,207 Shares. WS Capital Management, L.P. ("WSC Management") is the general partner of WSC and WSCQP, the agent and attorney-in-fact for WS International and the investment manager for HHMI. WS Capital, L.L.C. ("WS Capital") is the general partner of WSC Management. Reid S. Walker and G. Stacy Smith are members of WS Capital. As a result, WSC Management, WS Capital, and Messrs. Reid S. Walker and G. Stacy Smith possess shared power to vote and direct the disposition of the Shares held by the WS Funds. In addition, as of the Reporting Date, WS Opportunity Fund, L.P. ("WSO") and WS Opportunity Fund (Q.P.), L.P. ("WSOQP," and together with WSO, the "WSO Funds") owned no securities in the Company. WS Ventures Management, L.P. ("WSVM") is the general partner of the WSO Funds. WSV Management, L.L.C. ("WSV") is the general partner of WSVM. Reid S. Walker, G. Stacy Smith, and Patrick P. Walker are members of WSV. As a result, WSVM, WSV, and Messrs. Reid S. Walker, Patrick P. Walker, and G. Stacy Smith possess shared power to vote and direct the disposition of the Shares held by the WSO Funds. Thus, as of the Reporting Date, for the purposes of Reg. Section 240.13d-3, (i) Messrs. Reid S. Walker and G. Stacy Smith are deemed to beneficially own 85,207 Shares, or approximately 0.3% of the Shares deemed issued and outstanding as of the Reporting Date, (ii) WS Capital and WSC Management are deemed to beneficially own 85,207 Shares, or approximately 0.3% of the Shares deemed issued and outstanding as of the Reporting Date, and (iii) WSVM, WSV and Mr. Patrick P. Walker are deemed to beneficially own no securities of the Company, or 0% of the Shares deemed issued and outstanding as of the Reporting Date. Each of the reporting persons hereby expressly disclaims membership in a "group" under Section 13(d) of the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder with respect to the Shares reported herein, and this Schedule 13G Amendment No. 2 shall not be deemed to be an admission that any such reporting person is a member of such a group. CUSIP No. 02208R106 -------------------------------------------------------------------------------- (1) Names of Reporting Persons: WS Capital Management, L.P. I.R.S. Identification Nos. of Above Persons (entities only): -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member of a Group (See Instructions) (a) [ ] (b) [X] -------------------------------------------------------------------------------- (3) SEC Use Only -------------------------------------------------------------------------------- (4) Citizenship or Place of Organization: Texas -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each Reporting Person (5) Sole Voting Power: 0* -------------------------------------- (6) Shared Voting Power: 85,207* -------------------------------------- (7) Sole Dispositive Power: 0* -------------------------------------- (8) Shared Dispositive Power: 85,207* -------------------------------------- -------------------------------------------------------------------------------- (9) Aggregate Amount Beneficially Owned by Each Reporting Person: 85,207* -------------------------------------------------------------------------------- (10) Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares [ ] -------------------------------------------------------------------------------- (11) Percent of Class Represented by Amount in Row (9): 0.3%* -------------------------------------------------------------------------------- (12) Type of Reporting Person: IA/PN -------------------------------------------------------------------------------- * Based on information set forth in the Quarterly Report on Form 10-Q of Altra Holdings, Inc. (the "Company") for the quarterly period ended September 26, 2009 and filed with the Securities and Exchange Commission on November 4, 2009, as of November 1, 2009, there were 26,623,171 shares of the Company's common stock, par value $0.001 per share (the "Shares"), issued and outstanding. As of December 31, 2009 (the "Reporting Date"), Walker Smith Capital, L.P. ("WSC"), Walker Smith Capital (Q.P.), L.P. ("WSCQP"), Walker Smith International Fund, Ltd. ("WS International") HHMI Investments, L.P. ("HHMI") and GT Global Hedge, L.P. ("GT Global," and collectively with WSC, WSCQP, WS International and HHMI, the "WS Funds") owned in the aggregate 85,207 Shares. WS Capital Management, L.P. ("WSC Management") is the general partner of WSC and WSCQP, the agent and attorney-in-fact for WS International and the investment manager for HHMI. WS Capital, L.L.C. ("WS Capital") is the general partner of WSC Management. Reid S. Walker and G. Stacy Smith are members of WS Capital. As a result, WSC Management, WS Capital, and Messrs. Reid S. Walker and G. Stacy Smith possess shared power to vote and direct the disposition of the Shares held by the WS Funds. In addition, as of the Reporting Date, WS Opportunity Fund, L.P. ("WSO") and WS Opportunity Fund (Q.P.), L.P. ("WSOQP," and together with WSO, the "WSO Funds") owned no securities in the Company. WS Ventures Management, L.P. ("WSVM") is the general partner of the WSO Funds. WSV Management, L.L.C. ("WSV") is the general partner of WSVM. Reid S. Walker, G. Stacy Smith, and Patrick P. Walker are members of WSV. As a result, WSVM, WSV, and Messrs. Reid S. Walker, Patrick P. Walker, and G. Stacy Smith possess shared power to vote and direct the disposition of the Shares held by the WSO Funds. Thus, as of the Reporting Date, for the purposes of Reg. Section 240.13d-3, (i) Messrs. Reid S. Walker and G. Stacy Smith are deemed to beneficially own 85,207 Shares, or approximately 0.3% of the Shares deemed issued and outstanding as of the Reporting Date, (ii) WS Capital and WSC Management are deemed to beneficially own 85,207 Shares, or approximately 0.3% of the Shares deemed issued and outstanding as of the Reporting Date, and (iii) WSVM, WSV and Mr. Patrick P. Walker are deemed to beneficially own no securities of the Company, or 0% of the Shares deemed issued and outstanding as of the Reporting Date. Each of the reporting persons hereby expressly disclaims membership in a "group" under Section 13(d) of the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder with respect to the Shares reported herein, and this Schedule 13G Amendment No. 2 shall not be deemed to be an admission that any such reporting person is a member of such a group. CUSIP No. 02208R106 -------------------------------------------------------------------------------- (1) Names of Reporting Persons: WSV Management, L.L.C. I.R.S. Identification Nos. of Above Persons (entities only): -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member of a Group (See Instructions) (a) [ ] (b) [X] -------------------------------------------------------------------------------- (3) SEC Use Only -------------------------------------------------------------------------------- (4) Citizenship or Place of Organization: Texas -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each Reporting Person (5) Sole Voting Power: 0* -------------------------------------- (6) Shared Voting Power: 0* -------------------------------------- (7) Sole Dispositive Power: 0* -------------------------------------- (8) Shared Dispositive Power: 0* -------------------------------------- -------------------------------------------------------------------------------- (9) Aggregate Amount Beneficially Owned by Each Reporting Person: 0* -------------------------------------------------------------------------------- (10) Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares [ ] -------------------------------------------------------------------------------- (11) Percent of Class Represented by Amount in Row (9): 0%* -------------------------------------------------------------------------------- (12) Type of Reporting Person: HC/OO -------------------------------------------------------------------------------- * Based on information set forth in the Quarterly Report on Form 10-Q of Altra Holdings, Inc. (the "Company") for the quarterly period ended September 26, 2009 and filed with the Securities and Exchange Commission on November 4, 2009, as of November 1, 2009, there were 26,623,171 shares of the Company's common stock, par value $0.001 per share (the "Shares"), issued and outstanding. As of December 31, 2009 (the "Reporting Date"), Walker Smith Capital, L.P. ("WSC"), Walker Smith Capital (Q.P.), L.P. ("WSCQP"), Walker Smith International Fund, Ltd. ("WS International") HHMI Investments, L.P. ("HHMI") and GT Global Hedge, L.P. ("GT Global," and collectively with WSC, WSCQP, WS International and HHMI, the "WS Funds") owned in the aggregate 85,207 Shares. WS Capital Management, L.P. ("WSC Management") is the general partner of WSC and WSCQP, the agent and attorney-in-fact for WS International and the investment manager for HHMI. WS Capital, L.L.C. ("WS Capital") is the general partner of WSC Management. Reid S. Walker and G. Stacy Smith are members of WS Capital. As a result, WSC Management, WS Capital, and Messrs. Reid S. Walker and G. Stacy Smith possess shared power to vote and direct the disposition of the Shares held by the WS Funds. In addition, as of the Reporting Date, WS Opportunity Fund, L.P. ("WSO") and WS Opportunity Fund (Q.P.), L.P. ("WSOQP," and together with WSO, the "WSO Funds") owned no securities in the Company. WS Ventures Management, L.P. ("WSVM") is the general partner of the WSO Funds. WSV Management, L.L.C. ("WSV") is the general partner of WSVM. Reid S. Walker, G. Stacy Smith, and Patrick P. Walker are members of WSV. As a result, WSVM, WSV, and Messrs. Reid S. Walker, Patrick P. Walker, and G. Stacy Smith possess shared power to vote and direct the disposition of the Shares held by the WSO Funds. Thus, as of the Reporting Date, for the purposes of Reg. Section 240.13d-3, (i) Messrs. Reid S. Walker and G. Stacy Smith are deemed to beneficially own 85,207 Shares, or approximately 0.3% of the Shares deemed issued and outstanding as of the Reporting Date, (ii) WS Capital and WSC Management are deemed to beneficially own 85,207 Shares, or approximately 0.3% of the Shares deemed issued and outstanding as of the Reporting Date, and (iii) WSVM, WSV and Mr. Patrick P. Walker are deemed to beneficially own no securities of the Company, or 0% of the Shares deemed issued and outstanding as of the Reporting Date. Each of the reporting persons hereby expressly disclaims membership in a "group" under Section 13(d) of the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder with respect to the Shares reported herein, and this Schedule 13G Amendment No. 2 shall not be deemed to be an admission that any such reporting person is a member of such a group. CUSIP No. 02208R106 -------------------------------------------------------------------------------- (1) Names of Reporting Persons: WS Ventures Management, L.P. I.R.S. Identification Nos. of Above Persons (entities only): -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member of a Group (See Instructions) (a) [ ] (b) [X] -------------------------------------------------------------------------------- (3) SEC Use Only -------------------------------------------------------------------------------- (4) Citizenship or Place of Organization: Texas -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each Reporting Person (5) Sole Voting Power: 0* -------------------------------------- (6) Shared Voting Power: 0* -------------------------------------- (7) Sole Dispositive Power: 0* -------------------------------------- (8) Shared Dispositive Power: 0* -------------------------------------- -------------------------------------------------------------------------------- (9) Aggregate Amount Beneficially Owned by Each Reporting Person: 0* -------------------------------------------------------------------------------- (10) Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares [ ] -------------------------------------------------------------------------------- (11) Percent of Class Represented by Amount in Row (9): 0%* -------------------------------------------------------------------------------- (12) Type of Reporting Person: IA/PN -------------------------------------------------------------------------------- * Based on information set forth in the Quarterly Report on Form 10-Q of Altra Holdings, Inc. (the "Company") for the quarterly period ended September 26, 2009 and filed with the Securities and Exchange Commission on November 4, 2009, as of November 1, 2009, there were 26,623,171 shares of the Company's common stock, par value $0.001 per share (the "Shares"), issued and outstanding. As of December 31, 2009 (the "Reporting Date"), Walker Smith Capital, L.P. ("WSC"), Walker Smith Capital (Q.P.), L.P. ("WSCQP"), Walker Smith International Fund, Ltd. ("WS International") HHMI Investments, L.P. ("HHMI") and GT Global Hedge, L.P. ("GT Global," and collectively with WSC, WSCQP, WS International and HHMI, the "WS Funds") owned in the aggregate 85,207 Shares. WS Capital Management, L.P. ("WSC Management") is the general partner of WSC and WSCQP, the agent and attorney-in-fact for WS International and the investment manager for HHMI. WS Capital, L.L.C. ("WS Capital") is the general partner of WSC Management. Reid S. Walker and G. Stacy Smith are members of WS Capital. As a result, WSC Management, WS Capital, and Messrs. Reid S. Walker and G. Stacy Smith possess shared power to vote and direct the disposition of the Shares held by the WS Funds. In addition, as of the Reporting Date, WS Opportunity Fund, L.P. ("WSO") and WS Opportunity Fund (Q.P.), L.P. ("WSOQP," and together with WSO, the "WSO Funds") owned no securities in the Company. WS Ventures Management, L.P. ("WSVM") is the general partner of the WSO Funds. WSV Management, L.L.C. ("WSV") is the general partner of WSVM. Reid S. Walker, G. Stacy Smith, and Patrick P. Walker are members of WSV. As a result, WSVM, WSV, and Messrs. Reid S. Walker, Patrick P. Walker, and G. Stacy Smith possess shared power to vote and direct the disposition of the Shares held by the WSO Funds. Thus, as of the Reporting Date, for the purposes of Reg. Section 240.13d-3, (i) Messrs. Reid S. Walker and G. Stacy Smith are deemed to beneficially own 85,207 Shares, or approximately 0.3% of the Shares deemed issued and outstanding as of the Reporting Date, (ii) WS Capital and WSC Management are deemed to beneficially own 85,207 Shares, or approximately 0.3% of the Shares deemed issued and outstanding as of the Reporting Date, and (iii) WSVM, WSV and Mr. Patrick P. Walker are deemed to beneficially own no securities of the Company, or 0% of the Shares deemed issued and outstanding as of the Reporting Date. Each of the reporting persons hereby expressly disclaims membership in a "group" under Section 13(d) of the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder with respect to the Shares reported herein, and this Schedule 13G Amendment No. 2 shall not be deemed to be an admission that any such reporting person is a member of such a group. CUSIP No. 02208R106 -------------------------------------------------------------------------------- (1) Names of Reporting Persons: Reid S. Walker I.R.S. Identification Nos. of Above Persons (entities only): -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member of a Group (See Instructions) (a) [ ] (b) [X] -------------------------------------------------------------------------------- (3) SEC Use Only -------------------------------------------------------------------------------- (4) Citizenship or Place of Organization: United States -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each Reporting Person (5) Sole Voting Power: 0* -------------------------------------- (6) Shared Voting Power: 85,207* -------------------------------------- (7) Sole Dispositive Power: 0* -------------------------------------- (8) Shared Dispositive Power: 85,207* -------------------------------------- -------------------------------------------------------------------------------- (9) Aggregate Amount Beneficially Owned by Each Reporting Person: 85,207* -------------------------------------------------------------------------------- (10) Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares [ ] -------------------------------------------------------------------------------- (11) Percent of Class Represented by Amount in Row (9): 0.3%* -------------------------------------------------------------------------------- (12) Type of Reporting Person: IN -------------------------------------------------------------------------------- * Based on information set forth in the Quarterly Report on Form 10-Q of Altra Holdings, Inc. (the "Company") for the quarterly period ended September 26, 2009 and filed with the Securities and Exchange Commission on November 4, 2009, as of November 1, 2009, there were 26,623,171 shares of the Company's common stock, par value $0.001 per share (the "Shares"), issued and outstanding. As of December 31, 2009 (the "Reporting Date"), Walker Smith Capital, L.P. ("WSC"), Walker Smith Capital (Q.P.), L.P. ("WSCQP"), Walker Smith International Fund, Ltd. ("WS International") HHMI Investments, L.P. ("HHMI") and GT Global Hedge, L.P. ("GT Global," and collectively with WSC, WSCQP, WS International and HHMI, the "WS Funds") owned in the aggregate 85,207 Shares. WS Capital Management, L.P. ("WSC Management") is the general partner of WSC and WSCQP, the agent and attorney-in-fact for WS International and the investment manager for HHMI. WS Capital, L.L.C. ("WS Capital") is the general partner of WSC Management. Reid S. Walker and G. Stacy Smith are members of WS Capital. As a result, WSC Management, WS Capital, and Messrs. Reid S. Walker and G. Stacy Smith possess shared power to vote and direct the disposition of the Shares held by the WS Funds. In addition, as of the Reporting Date, WS Opportunity Fund, L.P. ("WSO") and WS Opportunity Fund (Q.P.), L.P. ("WSOQP," and together with WSO, the "WSO Funds") owned no securities in the Company. WS Ventures Management, L.P. ("WSVM") is the general partner of the WSO Funds. WSV Management, L.L.C. ("WSV") is the general partner of WSVM. Reid S. Walker, G. Stacy Smith, and Patrick P. Walker are members of WSV. As a result, WSVM, WSV, and Messrs. Reid S. Walker, Patrick P. Walker, and G. Stacy Smith possess shared power to vote and direct the disposition of the Shares held by the WSO Funds. Thus, as of the Reporting Date, for the purposes of Reg. Section 240.13d-3, (i) Messrs. Reid S. Walker and G. Stacy Smith are deemed to beneficially own 85,207 Shares, or approximately 0.3% of the Shares deemed issued and outstanding as of the Reporting Date, (ii) WS Capital and WSC Management are deemed to beneficially own 85,207 Shares, or approximately 0.2% of the Shares deemed issued and outstanding as of the Reporting Date, and (iii) WSVM, WSV and Mr. Patrick P. Walker are deemed to beneficially own no securities of the Company, or 0% of the Shares deemed issued and outstanding as of the Reporting Date. Each of the reporting persons hereby expressly disclaims membership in a "group" under Section 13(d) of the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder with respect to the Shares reported herein, and this Schedule 13G Amendment No. 2 shall not be deemed to be an admission that any such reporting person is a member of such a group. CUSIP No. 02208R106 -------------------------------------------------------------------------------- (1) Names of Reporting Persons: G. Stacy Smith I.R.S. Identification Nos. of Above Persons (entities only): -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member of a Group (See Instructions) (a) [ ] (b) [X] -------------------------------------------------------------------------------- (3) SEC Use Only -------------------------------------------------------------------------------- (4) Citizenship or Place of Organization: United States -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each Reporting Person (5) Sole Voting Power: 0* -------------------------------------- (6) Shared Voting Power: 85,207* -------------------------------------- (7) Sole Dispositive Power: 0* -------------------------------------- (8) Shared Dispositive Power: 85,207* -------------------------------------- -------------------------------------------------------------------------------- (9) Aggregate Amount Beneficially Owned by Each Reporting Person: 85,207* -------------------------------------------------------------------------------- (10) Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares [ ] -------------------------------------------------------------------------------- (11) Percent of Class Represented by Amount in Row (9): 0.3%* -------------------------------------------------------------------------------- (12) Type of Reporting Person: IN -------------------------------------------------------------------------------- * Based on information set forth in the Quarterly Report on Form 10-Q of Altra Holdings, Inc. (the "Company") for the quarterly period ended September 26, 2009 and filed with the Securities and Exchange Commission on November 4, 2009, as of November 1, 2009, there were 26,623,171 shares of the Company's common stock, par value $0.001 per share (the "Shares"), issued and outstanding. As of December 31, 2009 (the "Reporting Date"), Walker Smith Capital, L.P. ("WSC"), Walker Smith Capital (Q.P.), L.P. ("WSCQP"), Walker Smith International Fund, Ltd. ("WS International") HHMI Investments, L.P. ("HHMI") and GT Global Hedge, L.P. ("GT Global," and collectively with WSC, WSCQP, WS International and HHMI, the "WS Funds") owned in the aggregate 85,207 Shares. WS Capital Management, L.P. ("WSC Management") is the general partner of WSC and WSCQP, the agent and attorney-in-fact for WS International and the investment manager for HHMI. WS Capital, L.L.C. ("WS Capital") is the general partner of WSC Management. Reid S. Walker and G. Stacy Smith are members of WS Capital. As a result, WSC Management, WS Capital, and Messrs. Reid S. Walker and G. Stacy Smith possess shared power to vote and direct the disposition of the Shares held by the WS Funds. In addition, as of the Reporting Date, WS Opportunity Fund, L.P. ("WSO") and WS Opportunity Fund (Q.P.), L.P. ("WSOQP," and together with WSO, the "WSO Funds") owned no securities in the Company. WS Ventures Management, L.P. ("WSVM") is the general partner of the WSO Funds. WSV Management, L.L.C. ("WSV") is the general partner of WSVM. Reid S. Walker, G. Stacy Smith, and Patrick P. Walker are members of WSV. As a result, WSVM, WSV, and Messrs. Reid S. Walker, Patrick P. Walker, and G. Stacy Smith possess shared power to vote and direct the disposition of the Shares held by the WSO Funds. Thus, as of the Reporting Date, for the purposes of Reg. Section 240.13d-3, (i) Messrs. Reid S. Walker and G. Stacy Smith are deemed to beneficially own 85,207 Shares, or approximately 0.3% of the Shares deemed issued and outstanding as of the Reporting Date, (ii) WS Capital and WSC Management are deemed to beneficially own 85,207 Shares, or approximately 0.3% of the Shares deemed issued and outstanding as of the Reporting Date, and (iii) WSVM, WSV and Mr. Patrick P. Walker are deemed to beneficially own no securities of the Company, or 0% of the Shares deemed issued and outstanding as of the Reporting Date. Each of the reporting persons hereby expressly disclaims membership in a "group" under Section 13(d) of the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder with respect to the Shares reported herein, and this Schedule 13G Amendment No. 2 shall not be deemed to be an admission that any such reporting person is a member of such a group. CUSIP No. 02208R106 -------------------------------------------------------------------------------- (1) Names of Reporting Persons: Patrick P. Walker I.R.S. Identification Nos. of Above Persons (entities only): -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member of a Group (See Instructions) (a) [ ] (b) [X] -------------------------------------------------------------------------------- (3) SEC Use Only -------------------------------------------------------------------------------- (4) Citizenship or Place of Organization: United States -------------------------------------------------------------------------------- Number of Shares Beneficially Owned by Each Reporting Person (5) Sole Voting Power: 0* -------------------------------------- (6) Shared Voting Power: 0* -------------------------------------- (7) Sole Dispositive Power: 0* -------------------------------------- (8) Shared Dispositive Power: 0* -------------------------------------- -------------------------------------------------------------------------------- (9) Aggregate Amount Beneficially Owned by Each Reporting Person: 0* -------------------------------------------------------------------------------- (10) Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares [ ] -------------------------------------------------------------------------------- (11) Percent of Class Represented by Amount in Row (9): 0%* -------------------------------------------------------------------------------- (12) Type of Reporting Person: IN -------------------------------------------------------------------------------- * Based on information set forth in the Quarterly Report on Form 10-Q of Altra Holdings, Inc. (the "Company") for the quarterly period ended September 26, 2009 and filed with the Securities and Exchange Commission on November 4, 2009, as of November 1, 2009, there were 26,623,171 shares of the Company's common stock, par value $0.001 per share (the "Shares"), issued and outstanding. As of December 31, 2009 (the "Reporting Date"), Walker Smith Capital, L.P. ("WSC"), Walker Smith Capital (Q.P.), L.P. ("WSCQP"), Walker Smith International Fund, Ltd. ("WS International") HHMI Investments, L.P. ("HHMI") and GT Global Hedge, L.P. ("GT Global," and collectively with WSC, WSCQP, WS International and HHMI, the "WS Funds") owned in the aggregate 85,207 Shares. WS Capital Management, L.P. ("WSC Management") is the general partner of WSC and WSCQP, the agent and attorney-in-fact for WS International and the investment manager for HHMI. WS Capital, L.L.C. ("WS Capital") is the general partner of WSC Management. Reid S. Walker and G. Stacy Smith are members of WS Capital. As a result, WSC Management, WS Capital, and Messrs. Reid S. Walker and G. Stacy Smith possess shared power to vote and direct the disposition of the Shares held by the WS Funds. In addition, as of the Reporting Date, WS Opportunity Fund, L.P. ("WSO") and WS Opportunity Fund (Q.P.), L.P. ("WSOQP," and together with WSO, the "WSO Funds") owned no securities in the Company. WS Ventures Management, L.P. ("WSVM") is the general partner of the WSO Funds. WSV Management, L.L.C. ("WSV") is the general partner of WSVM. Reid S. Walker, G. Stacy Smith, and Patrick P. Walker are members of WSV. As a result, WSVM, WSV, and Messrs. Reid S. Walker, Patrick P. Walker, and G. Stacy Smith possess shared power to vote and direct the disposition of the Shares held by the WSO Funds. Thus, as of the Reporting Date, for the purposes of Reg. Section 240.13d-3, (i) Messrs. Reid S. Walker and G. Stacy Smith are deemed to beneficially own 85,207 Shares, or approximately 0.3% of the Shares deemed issued and outstanding as of the Reporting Date, (ii) WS Capital and WSC Management are deemed to beneficially own 85,207 Shares, or approximately 0.3% of the Shares deemed issued and outstanding as of the Reporting Date, and (iii) WSVM, WSV and Mr. Patrick P. Walker are deemed to beneficially own no securities of the Company, or 0% of the Shares deemed issued and outstanding as of the Reporting Date. Each of the reporting persons hereby expressly disclaims membership in a "group" under Section 13(d) of the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder with respect to the Shares reported herein, and this Schedule 13G Amendment No. 2 shall not be deemed to be an admission that any such reporting person is a member of such a group. Item 1(a). Name of Issuer: ALTRA HOLDINGS, INC. Item 1(b). Address of Issuer's Principal Executive Offices: 14 Hayward Street Quincy, Massachusetts 02171 Item 2(a). Name of Person Filing: WS Capital, L.L.C. WS Capital Management, L.P. WSV Management, L.L.C. WS Ventures Management, L.P. Reid S. Walker G. Stacy Smith Patrick P. Walker Item 2(b). Address of Principal Business Office or, if none, Residence: 300 Crescent Court, Suite 1111 Dallas, Texas 75201 Item 2(c). Citizenship: WS Capital, L.L.C.: Texas WS Capital Management, L.P.: Texas WSV Management, L.L.C.: Texas WS Ventures Management, L.P.: Texas Reid S. Walker: United States G. Stacy Smith: United States Patrick P. Walker: United States Item 2(d). Title of Class of Securities: Common Stock, par value $0.001 per share Item 2(e). CUSIP Number: 02208R106 Item 3. Not Applicable. Item 4. Ownership: (a) Amount Beneficially Owned: WS Capital, L.L.C. 85,207* WS Capital Management, L.P. 85,207* WSV Management, L.L.C. 0* WS Ventures Management, L.P. 0* Reid S. Walker 85,207* G. Stacy Smith 85,207* Patrick P. Walker 0* (b) Percent of Class: WS Capital, L.L.C. 0.3%* WS Capital Management, L.P. 0.3%* WSV Management, L.L.C. 0%* WS Ventures Management, L.P. 0%* Reid S. Walker 0.3%* G. Stacy Smith 0.3%* Patrick P. Walker 0%* (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote: WS Capital, L.L.C. 0* WS Capital Management, L.P. 0* WSV Management, L.L.C. 0* WS Ventures Management, L.P. 0* Reid S. Walker 0* G. Stacy Smith 0* Patrick P. Walker 0* (ii) shared power to vote or to direct the vote: WS Capital, L.L.C. 85,207* WS Capital Management, L.P. 85,207* WSV Management, L.L.C. 0* WS Ventures Management, L.P. 0* Reid S. Walker 85,207* G. Stacy Smith 85,207* Patrick P. Walker 0* (iii) sole power to dispose or to direct the disposition of: WS Capital, L.L.C. 0* WS Capital Management, L.P. 0* WSV Management, L.L.C. 0* WS Ventures Management, L.P. 0* Reid S. Walker 0* G. Stacy Smith 0* Patrick P. Walker 0* (iv) shared power to dispose or to direct the disposition of: WS Capital, L.L.C. 85,207* WS Capital Management, L.P. 85,207* WSV Management, L.L.C. 0* WS Ventures Management, L.P. 0* Reid S. Walker 85,207* G. Stacy Smith 85,207* Patrick P. Walker 0* * See footnote to cover pages. Item 5. Ownership of Five Percent or Less of a Class: If this statement is being filed to report the fact that as of the date hereof the reporting person ceased to be the beneficial owner of more than five percent of the class of securities, check the following [X]. Item 6. Ownership of More than Five Percent on Behalf of Another Person: Not applicable. Item 7. Identification and Classification of Subsidiary Which Acquired the Securities: Not applicable. Item 8. Identification and Classification of Members of the Group: Not applicable. Item 9. Notice of Dissolution of Group: Not applicable. Item 10. Certification: By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. February 16, 2010 WS CAPITAL, L.L.C. By: /s/ Reid S. Walker --------------------------------------------- Reid S. Walker, Member WS CAPITAL MANAGEMENT, L.P. By: WS Capital, L.L.C., its general partner By: /s/ Reid S. Walker --------------------------------------------- Reid S. Walker, Member WSV MANAGEMENT, L.L.C. By: /s/ Reid S. Walker --------------------------------------------- Reid S. Walker, Member WS VENTURES MANAGEMENT, L.P. By: WSV Management, L.L.C., its general partner By: /s/ Reid S. Walker --------------------------------------------- Reid S. Walker, Member /s/ Reid S. Walker ----------------------------------------- REID S. WALKER /s/ G. Stacy Smith ----------------------------------------- G. STACY SMITH /s/ Patrick P. Walker ----------------------------------------- PATRICK P. WALKER Attention: Intentional misstatements or omissions of fact constitute Federal criminal violations (See 18 U.S.C. 1001) EXHIBIT 1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them a Statement on Schedule 13G (including amendments thereto) with regard to the common stock of ALTRA HOLDINGS, INC. and further agree that this Joint Filing Agreement be included as an Exhibit to such joint filings. In evidence thereof, the undersigned, being duly authorized, hereby execute this Joint Filing Agreement as of February 16, 2010. WS CAPITAL, L.L.C. By: /s/ Reid S. Walker --------------------------------------------- Reid S. Walker, Member WS CAPITAL MANAGEMENT, L.P. By: WS Capital, L.L.C., its general partner By: /s/ Reid S. Walker --------------------------------------------- Reid S. Walker, Member WSV MANAGEMENT, L.L.C. By: /s/ Reid S. Walker --------------------------------------------- Reid S. Walker, Member WS VENTURES MANAGEMENT, L.P. By: WSV Management, L.L.C., its general partner By: /s/ Reid S. Walker --------------------------------------------- Reid S. Walker, Member /s/ Reid S. Walker ----------------------------------------- REID S. WALKER /s/ G. Stacy Smith ----------------------------------------- G. STACY SMITH /s/ Patrick P. Walker ----------------------------------------- PATRICK P. WALKER