SEC FORM 4

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

McDonough Thomas M

(Last)

(First)

(Middle)

C/O SOURCEFIRE, INC.

9770 PATUXENT WOODS DRIVE

(Street)

COLUMBIA

21046

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
SOURCEFIRE INC [ FIRE ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	President and COO

3. Date of Earliest Transaction (Month/Day/Year)
02/12/2013

4. If Amendment, Date of 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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	02/12/2013		M		2,385	A	$15.49	42,960	D
Common Stock	02/12/2013		M		8,215	A	$26.16	51,175	D
Common Stock	02/12/2013		S		3,600	D	$40.8018⁽¹⁾	47,575	D
Common Stock	02/12/2013		S		5,000	D	$41.7562⁽²⁾	42,575	D
Common Stock	02/12/2013		S		2,000	D	$42.7501⁽³⁾	40,575	D

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 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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Option (right to buy)	$15.49	02/12/2013		M			2,385	⁽⁴⁾	03/09/2017	Common Stock	2,385	$0.00	0	D
Stock Option (right to buy)	$26.16	02/12/2013		M			8,215	⁽⁵⁾	03/07/2018	Common Stock	8,215	$0.00	9,985	D

Explanation of Responses:

1. Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $40.33 to $41.1201 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. Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $41.4701 to $42.1001 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.

3. Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $42.57 to $42.8101 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. The option vested over a period of four years, with 25% of the shares underlying the option vesting on March 9, 2008, the first anniversary of the date of grant, and the remainder vesting in 36 equal monthly installments thereafter.

5. The option vests over a period of four years, with 25% of the shares underlying the option vesting on March 7, 2012, the first anniversary of the date of grant, and the remainder vesting in 36 equal monthly installments thereafter.

Remarks:

The option exercises and sales reported were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 17, 2012.

	/s/ Brian F. Leaf, Attorney-in-fact	02/14/2013
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.