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 *
  Hutchison Donald P.
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)
C/O MARIN SOFTWARE INCORPORATED, 123 MISSION STREET, 25TH FLOOR
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

SAN FRANCISCO, CA 94105
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ 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)
Common Stock 100,181
I
Held by the Hutchison Family Trust (1)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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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 A Preferred Stock   (2)   (2) Common Stock 134,049 $ 0 (2) I Held by the Hutchison Family Trust (1)
Series A Preferred Stock   (2)   (2) Common Stock 44,683 $ 0 (2) I held by Glasgow Investments, LLC (3)
Series D Preferred Stock   (2)   (2) Common Stock 13,550 $ 0 (2) I Held by the Hutchison Family Trust (1)
Series D Preferred Stock   (2)   (2) Common Stock 4,517 $ 0 (2) I Held by Glasgow Investments, LLC (3)
Series E Preferred Stock   (2)   (2) Common Stock 6,307 $ 0 (2) I Held by the Hutchison Family Trust (1)
Series F Preferred Stock   (2)   (2) Common Stock 5,000 $ 0 (2) I Held by the Hutchison Family Trust (1)
Director Stock Option (right to buy)   (4) 09/13/2022 Common Stock 20,000 $ 7.55 D  
Director Stock Option (right to buy)   (4) 01/30/2023 Common Stock 30,700 $ 12.15 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Hutchison Donald P.
C/O MARIN SOFTWARE INCORPORATED
123 MISSION STREET, 25TH FLOOR
SAN FRANCISCO, CA 94105
  X      

Signatures

/s/ Donald P. Hutchison by Stephen Chen, Attorney-in-Fact 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) The Reporting Person is the Co-Trustee.
(2) 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.
(3) The Reporting Person is a managing member of Glasgow Investments, LLC and possesses the power to direct the voting and disposition of the shares held by Glasgow Investments, LLC and as such may be deemed to beneficially own the shares held by Glasgow Investments, LLC.
(4) The stock option grant is immediately exercisable in full.

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