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 *
GULERI TIM
  2. Issuer Name and Ticker or Trading Symbol
SOURCEFIRE INC [FIRE]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O SOURCEFIRE, INC., 9770 PATUXENT WOODS DRIVE
3. Date of Earliest Transaction (Month/Day/Year)
05/31/2012
(Street)

COLUMBIA, MD 21046
4. If Amendment, Date Original Filed(Month/Day/Year)
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 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 05/31/2012   A   2,266 (1) A $ 0 2,266 D  
Common Stock 05/31/2012   A   158 (2) A $ 0 19,579 (3) I Held by trust (4)

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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
GULERI TIM
C/O SOURCEFIRE, INC.
9770 PATUXENT WOODS DRIVE
COLUMBIA, MD 21046
  X      

Signatures

 /s/ Brian F. Leaf, Attorney-in-fact   06/04/2012
**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) This grant was made pursuant to the issuer's non-employee director compensation policy. As a continuing director, the reporting person was awarded a number of shares equal to $125,000 divided by $55.16, the closing price of the issuer's common stock on the date of grant, May 31, 2012. The shares underlying this restricted stock award will vest in full on the earlier of (i) May 31, 2013, or (ii) the date immediately preceding the date of the issuer's 2013 annual meeting of stockholders.
(2) These shares were issued in lieu of a quarterly cash payment of board retainer fee at the election of the reporting person, in accordance with the issuer's a non-employee director compensation policy. The number of shares is equal to $8,750 divided by $55.16, the closing price of the issuer's common stock on the date of grant, May 31, 2012. The shares underlying this stock award were vested in full upon grant.
(3) The total includes 4,111 shares that were previously owned directly but have been transferred to the Guleri Trust.
(4) Shares are held by the Tim Guleri TTEE U/A DTD 4/7/99 Guleri Family Trust (the "Guleri Trust"). The reporting person is a trustee and beneficiary of the Guleri Trust.

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