Ownership Submission
FORM 3
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  DAG Ventures Management IV, LLC
2. Date of Event Requiring Statement (Month/Day/Year)
03/21/2013
3. Issuer Name and Ticker or Trading Symbol
MARIN SOFTWARE INC [MRIN]
(Last)
(First)
(Middle)
251 LYTTON AVENUE, SUITE 200
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

PALO ALTO, CA 94301
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(Month/Day/Year)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Series C Preferred Stock   (1)   (1) Common Stock 206,164 $ (1) I Held by DAG Ventures IV, L.P. (2)
Series D Preferred Stock   (1)   (1) Common Stock 69,072 $ (1) I Held by DAG Ventures IV, L.P. (2)
Series E Preferred Stock   (1)   (1) Common Stock 16,918 $ (1) I Held by DAG Ventures IV, L.P. (2)
Series F Preferred Stock   (1)   (1) Common Stock 19,433 $ (1) I Held by DAG Ventures IV, L.P. (2)
Series F-1 Preferred Stock   (1)   (1) Common Stock 17,371 $ (1) I Held by DAG Ventures IV, L.P. (2)
Series C Preferred Stock   (1)   (1) Common Stock 359,492 $ (1) I Held by DAG Ventures IV-A, LLC (2)
Series C Preferred Stock   (1)   (1) Common Stock 1,950,791 $ (1) I Held by DAG Ventures IV-QP, L.P. (2)
Series D Preferred Stock   (1)   (1) Common Stock 653,588 $ (1) I Held by DAG Ventures IV-QP, L.P. (2)
Series E Preferred Stock   (1)   (1) Common Stock 160,086 $ (1) I Held by DAG Ventures IV-QP, L.P. (2)
Series F Preferred Stock   (1)   (1) Common Stock 183,882 $ (1) I Held by DAG Ventures IV-QP, L.P. (2)
Series F-1 Preferred Stock   (1)   (1) Common Stock 164,372 $ (1) I Held by DAG Ventures IV-QP, L.P. (2)

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
DAG Ventures Management IV, LLC
251 LYTTON AVENUE, SUITE 200
PALO ALTO, CA 94301
    X    
DAG Ventures IV, L.P.
251 LYTTON AVENUE, SUITE 200
PALO ALTO, CA 94301
    X    
DAG Ventures IV-QP, L.P.
251 LYTTON AVENUE, SUITE 200
PALO ALTO, CA 94301
    X    
Cadeddu John J.
251 LYTTON AVENUE, SUITE 200
PALO ALTO, CA 94301
    X    
Chung Young J.
251 LYTTON AVENUE, SUITE 200
PALO ALTO, CA 94301
    X    
Goodrich R. Thomas
251 LYTTON AVENUE, SUITE 200
PALO ALTO, CA 94301
    X    
Pianim Nicholas K.
251 LYTTON AVENUE, SUITE 200
PALO ALTO, CA 94301
    X    
Williams Greg
251 LYTTON AVENUE, SUITE 200
PALO ALTO, CA 94301
    X    
DAG Ventures IV-A, LLC
251 LYTTON AVENUE, SUITE 200
PALO ALTO, CA 94301
    X    

Signatures

/s/ R. Thomas Goodrich as Managing Director of DAG Ventures Management IV, LLC, the General Partner of DAG Ventures IV, L.P. 03/21/2013
**Signature of Reporting Person Date

/s/ R. Thomas Goodrich as Managing Director of DAG Ventures Management IV, LLC, the General Partner of DAG Ventures IV-QP, L.P. 03/21/2013
**Signature of Reporting Person Date

/s/ R. Thomas Goodrich as Managing Director of DAG Ventures Management IV, LLC, the Manager of DAG Ventures IV-A, LLC 03/21/2013
**Signature of Reporting Person Date

/s/ R. Thomas Goodrich, by power of attorney for John J. Cadeddu 03/21/2013
**Signature of Reporting Person Date

/s/ R. Thomas Goodrich, by power of attorney for Young J. Chung 03/21/2013
**Signature of Reporting Person Date

/s/ R. Thomas Goodrich, by power of attorney for Nicholas K. Pianim 03/21/2013
**Signature of Reporting Person Date

/s/ R. Thomas Goodrich, by power of attorney for Greg Williams 03/21/2013
**Signature of Reporting Person Date

/s/ R. Thomas Goodrich as Managing Director of DAG Ventures Management IV, LLC 03/21/2013
**Signature of Reporting Person Date

/s/ R. Thomas Goodrich 03/21/2013
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Each share of Preferred Stock will automatically convert into one (1) share of the Issuer's Common Stock upon the closing of the Issuer's initial public offering of Common Stock for no additional consideration, and has no expiration date.
(2) DAG Ventures Management IV, LLC ("DAG IV LLC") serves as the General Partner of DAG Ventures IV, L.P. ("DAG IV") and DAG Ventures IV-QP, L.P. ("DAG IV-QP"), and serves as the Manager of DAG Ventures IV-A, LLC ("DAG IV-A"), and possesses power to direct the voting and disposition of the securities held by such entities. DAG IV LLC disclaims beneficial ownership over such securities except to the extent of its pecuniary interest therein. Messrs. John J. Cadeddu, R. Thomas Goodrich, Young J. Chung, Nicholas K. Pianim and Greg Williams are Managing Directors of DAG IV LLC. As such, each of such individuals possesses power to direct the voting and disposition of the shares held of record by DAG IV, DAG IV-A and DAG IV-QP. Each of such individuals disclaims beneficial ownership of such securities except to the extent of his or her pecuniary interest therein. The inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securiti

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