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 *
Becker John
   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)
Chief Executive Officer
(Last)
(First)
(Middle)
C/O SOURCEFIRE, INC., 9770 PATUXENT WOODS DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
10/07/2013
(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 10/07/2013   D   164,241 D (1) $ 76 0 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
Stock Option (right to buy) $ 54.44 10/07/2013   D     46,666   (2) 05/05/2020 Common Stock 46,666 $ 21.56 (3) 0 D  
Stock Option (right to buy) $ 54.44 10/07/2013   D     46,667   (4) 05/05/2020 Common Stock 46,667 $ 21.56 (3) 0 D  
Stock Option (right to buy) $ 54.44 10/07/2013   D     46,667   (5) 05/05/2020 Common Stock 46,667 $ 21.56 (3) 0 D  
Stock Option (right to buy) $ 54.44 10/07/2013   D     130,000   (6) 05/05/2020 Common Stock 130,000 $ 21.56 (3) 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Becker John
C/O SOURCEFIRE, INC.
9770 PATUXENT WOODS DRIVE
COLUMBIA, MD 21046		   X     Chief Executive Officer  

Signatures

 /s/ Brian F. Leaf, Attorney-in-fact   10/09/2013
**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) These securities were disposed of in connection with the acquisition of the issuer by Cisco Systems, Inc. (the "Acquisition").
(2) This option provided for a vesting commencement date of any date on which the trading price of the issuer's common stock had been equal to or exceeded $60.00 per share for 10 consecutive trading days. This option would then vest over a period of four years, with 25% of the shares underlying the option vesting on the first anniversary of the vesting commencement date, and the remainder vesting in 12 equal quarterly installments thereafter, subject to the reporting person's continuous service with the issuer as of the applicable vesting date.
(3) In connection with the Acquisition, this option was cancelled in exchange for $76.00 per share less the exercise price per share of $54.44.
(4) This option provided for a vesting commencement date of any date on which the trading price of the issuer's common stock had been equal to or exceeded $65.00 per share for 10 consecutive trading days. This option would then vest over a period of four years, with 25% of the shares underlying the option vesting on the first anniversary of the vesting commencement date, and the remainder vesting in 12 equal quarterly installments thereafter, subject to the reporting person's continuous service with the issuer as of the applicable vesting date.
(5) This option provided for a vesting commencement date of any date on which the trading price of the issuer's common stock had been equal to or exceeded $70.00 per share for 10 consecutive trading days. This option would then vest over a period of four years, with 25% of the shares underlying the option vesting on the first anniversary of the vesting commencement date, and the remainder vesting in 12 equal quarterly installments thereafter, subject to the reporting person's continuous service with the issuer as of the applicable vesting date.
(6) This option provided for vesting over a period of four years, with 25% of the shares underlying the option vesting on May 6, 2014, the first anniversary of the date of grant, and the remainder vesting in 12 equal quarterly installments thereafter, subject to the reporting person's continuous service with the issuer as of the applicable vesting date.

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