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 * NEW ENTERPRISE ASSOCIATES 10 L P   2. Issuer Name and Ticker or Trading Symbol SOURCEFIRE INC [FIRE] 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) 1119 ST. PAUL STREET 3. Date of Earliest Transaction (Month/Day/Year) 05/01/2009 (Street) BALTIMORE, MD 21202 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 05/01/2009   S   273,487 D $ 12.0578 2,936,073 D (1)   Common Stock 05/04/2009   S   244,260 D $ 12.0578 2,691,813 D (1)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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
NEW ENTERPRISE ASSOCIATES 10 L P 1119 ST. PAUL STREET BALTIMORE, MD 21202		X
NEA PARTNERS 10 L P 1119 ST. PAUL STREET BALTIMORE, MD 21202		X
BARRIS PETER J 1119 ST. PAUL STREET BALTIMORE, MD 21202		X
BARRETT M JAMES 1119 ST. PAUL STREET BALTIMORE, MD 21202		X
KRAMLICH C RICHARD 1119 ST. PAUL STREET BALTIMORE, MD 21202		X
NEWHALL CHARLES W III 1119 ST. PAUL STREET BALTIMORE, MD 21202		X
PERRY MARK W 1119 ST. PAUL STREET BALTIMORE, MD 21202		X
SANDELL SCOTT D 1119 ST. PAUL STREET BALTIMORE, MD 21202		X
TRAINOR III EUGENE A 1119 ST. PAUL STREET BALTIMORE, MD 21202		X

Signatures

/s/ Shawn Conway, attorney-in-fact		05/05/2009
**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)	The shares are directly held by New Enterprise Associates 10, Limited Partnership ("NEA 10") and indirectly held by NEA Partners 10, Limited Partnership ("NEA Partners 10"), the sole general partner of NEA 10, and the individual general partners of NEA Partners 10 (NEA Partners 10 and its general partners together, the "Indirect Reporting Persons"). The individual general partners of NEA Partners 10 are Peter Barris, M. James Barrett, C. Richard Kramlich, Charles W. Newhall, III, Mark W. Perry, Scott D. Sandell and Eugene A. Trainor, III. The Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of Securities Exchange Act of 1934, as amended, or otherwise of such portion of the NEA 10 shares in which the Indirect Reporting Persons have no actual pecuniary interest therein.

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