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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1168195	Sourcefire Inc	FIRE	Services-Computer Processing & Data Preparation (7374)	522289365

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1245141	Tim Guleri	C/O Sourcefire, Inc. 9770 Patuxent Woods Drive Columbia MD 21046		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2010-03-03	10,000	$26.33	22,221	No	4	S	Indirect	Held by trust

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	Held by trust

Footnotes

Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $26.20 to $26.52 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.
Includes 7,804 shares which shall vest in full on the earlier of (i) the one (1) year anniversary of May 14, 2009 (the "Date of Award"), or (ii) the date immediately preceding the Date of the Annual Meeting of the Company's stockholders for the year following the year in which the Date of Award was made.
Shares are held by the Guleri Family Trust UTD dated April 7, 1999 (the "Guleri Trust"). The Reporting Person is a trustee and beneficiary of the Guleri Trust.