Statement of Changes in Beneficial Ownership (4)

FORM 4 [ X ] 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	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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 (MM/DD/YYYY) 10/7/2013
(Street) COLUMBIA, MD 21046 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _ X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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	10/7/2013		D		164241	D (1)	$76.00	0	D

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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		7. Title and Amount of Securities Underlying Derivative Security (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	10/7/2013		D			46666	(2)	5/5/2020	Common Stock	46666	$21.56   (3)	0	D
Stock Option (right to buy)	$54.44	10/7/2013		D			46667	(4)	5/5/2020	Common Stock	46667	$21.56   (3)	0	D
Stock Option (right to buy)	$54.44	10/7/2013		D			46667	(5)	5/5/2020	Common Stock	46667	$21.56   (3)	0	D
Stock Option (right to buy)	$54.44	10/7/2013		D			130000	(6)	5/5/2020	Common Stock	130000	$21.56   (3)	0	D

Explanation of Responses:
( 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.

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		10/9/2013
** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	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).
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