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 *
Roesch Martin F
   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
__X__ Officer (give title below) _____ Other (specify below)
CTO and Interim CEO
(Last)
(First)
(Middle)
C/O SOURCEFIRE, INC., 9770 PATUXENT WOODS DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
07/18/2012
(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 07/18/2012   S   4,200 D $ 43.7283 (1) 479,263 (2) D  
Common Stock 07/18/2012   S   10,100 D $ 44.7408 (3) 469,163 D  
Common Stock 07/18/2012   S   1,325 D $ 45.4006 (4) 467,838 D  
Common Stock 07/19/2012   S   4,500 D $ 46.285 (5) 463,338 D  
CommonStock 07/19/2012   S   10,300 D $ 47.1546 (6) 453,038 D  
Common Stock 07/19/2012   S   825 D $ 47.8806 (7) 452,213 D  
Common Stock               271,144 (8) I By GRAT (9)

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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
Roesch Martin F
C/O SOURCEFIRE, INC.
9770 PATUXENT WOODS DRIVE
COLUMBIA, MD 21046		   X     CTO and Interim CEO  

Signatures

 /s/ Brian F. Leaf, Attorney-in-fact   07/20/2012
**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) Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $43.06 to $44.05 per share. The reporting person undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
(2) This total includes 2,455 shares previously held by The Martin F. Roesch 2010 Grantor Retained Annuity Trust and which were transferred to the reporting person on July 6, 2012 and are now owned directly by the reporting person.
(3) Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $44.12 to $45.07 per share. The reporting person undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
(4) Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $45.13 to $45.69 per share. The reporting person undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
(5) Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $45.78 to $46.76 per share. The reporting person undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
(6) Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $46.79 to $47.57 per share. The reporting person undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
(7) Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $47.79 to $47.93 per share. The reporting person undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
(8) This total excludes the 2,455 shares transferred to the reporting person as described in footnote 2.
(9) Shares are held by The Martin F. Roesch 2010 Grantor Retained Annuity Trust, of which the reporting person is the trustee.
 
Remarks:
The sales reported were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2012.

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