Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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 *
  Boyle Joseph M
 2. Date of Event Requiring Statement (Month/Day/Year)
03/08/2007		 3. Issuer Name and Ticker or Trading Symbol
SOURCEFIRE INC [FIRE]
(Last)
(First)
(Middle)
9770 PATUXENT WOODS DRIVE		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
General Counsel and Secretary
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

COLUMBIA, MD 21046		 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 Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (right to buy) 04/24/2006(1)(2)(3) 04/24/2016 Common Stock 123,512 $ 5.26 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Boyle Joseph M
9770 PATUXENT WOODS DRIVE
COLUMBIA, MD 21046		       General Counsel and Secretary  

Signatures

/s/ Joseph M. Boyle 03/08/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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) Options vest as to 75% of the options in equal quarterly installments over four years, commencing on April 24, 2006.
(2) Options vested as to 12.5% of the options upon the filing of the issuer?s registration statement on Form S-1 on October 25, 2006.
(3) Options vest as to 12.5% of the options upon the first to occur of (i) the Snort OEM license business unit successfully reaching agreement with its third OEM customer and (ii) April 24, 2010. With respect to the options that vest quarterly, the lesser of (i) 50% of such options and (ii) the number of such options that are unvested shall accelerate and become fully vested if there is a change in control and the holder?s employment is terminated without cause subsequent to the change in control.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.