Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN 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 *
NBVM GP, LLC
  2. Issuer Name and Ticker or Trading Symbol
Starent Networks, Corp. [STAR]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O NORTHBRIDGE VENTURE PARTNERS, 950 WINTER STREET, SUITE 4600
3. Date of Earliest Transaction (Month/Day/Year)
03/23/2009
(Street)

WALTHAM, MA 02451
4. If Amendment, Date Original Filed(Month/Day/Year)
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 Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 03/23/2009   J(1)   1,786,162 D $ 0 5,358,486 I See Footnote (2)
Common Stock 03/23/2009   J(3)   849,518 D $ 0 2,548,554 I See Footnote (4)
Common Stock               7,964 (5) D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
NBVM GP, LLC
C/O NORTHBRIDGE VENTURE PARTNERS
950 WINTER STREET, SUITE 4600
WALTHAM, MA 02451
    X    
North Bridge Venture Management IV, L.P.
C/O NORTH BRIDGE VENTURE PARTNERS
950 WINTER STREET, SUITE 4600
WALTHAM, MA 02451
    X    
NORTH BRIDGE VENTURE PARTNERS IV A LP
C/O NORTH BRIDGE VENTURE PARTNERS
950 WINTER STREET, SUITE 4600
WALTHAM, MA 02451
    X    
NORTH BRIDGE VENTURE PARTNERS IV B LP
C/O NORTH BRIDGE VENTURE PARTNERS
950 WINTER STREET, SUITE 4600
WALTHAM, MA 02451
    X    
DAMORE RICHARD A
C/O NORTH BRIDGE VENTURE PARTNERS
950 WINTER STREET, SUITE 4600
WALTHAM, MA 02451
    X    

Signatures

 By: /s/ Edward T. Anderson, Name: Edward T. Anderson, Title: Manager   03/27/2009
**Signature of Reporting Person Date

 By: NBVM GP, LLC, its general partner, By: /s/ Edward T. Anderson, Name: Edward T. Anderson, Title: Manager   03/27/2009
**Signature of Reporting Person Date

 By: North Bridge Venture Management IV, L.P., its general partner, By: NBVM GP, LLC, its general partner, By: /s/ Edward T. Anderson, Name: Edward T. Anderson, Title: Manager   03/27/2009
**Signature of Reporting Person Date

 By: North Bridge Venture Management IV, L.P., its general partner, By: NBVM GP, LLC, its general partner, By: /s/ Edward T. Anderson, Name: Edward T. Anderson, Title: Manager   03/27/2009
**Signature of Reporting Person Date

 /s/ Richard A. D?Amore   03/27/2009
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(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) Pro rata distribution of shares by North Bridge Venture Partners IV-A, L.P., or NBVP IV-A, to its partners without consideration.
(2) Represents securities held of record by NBVP IV-A. NBVM GP, LLC, or NBVM, the sole general partner of North Bridge Venture Management IV, L.P., which is the sole general partner o NBVP IV-A, has sole voting and dispositive power over these shares. The managers of NBVM having voting and dispositive power over these shares are Edward T. Anderson and Richard A. D'Amore, each of whom disclaims beneficial ownership of such shares except to the extent of their pecuniary interest.
(3) Pro rata distribution of shares by North Bridge Venture Partners IV-B, L.P., or NBVP IV-B, to its partners without consideration.
(4) Represents securities held of record by NBVP IV-B. NBVM, the sole general partner of North Bridge Venture Management IV, L.P., which is the sole general partner o NBVP IV-B, has sole voting and dispositive power over these shares. The managers of NBVM having voting and dispositive power over these shares are Edward T. Anderson and Richard A. D'Amore, each of whom disclaims beneficial ownership of such shares except to the extent of their pecuniary interest.
(5) Represents securities held of record by Mr. D'Amore received in connection with the pro rata distribution from NBVP IV-A and NBVP IV-B referenced above in footnotes 1 and 3.

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