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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
1464491	Leslie Pendergrast	C/O Sourcefire, Inc. 9770 Patuxent Woods Drive Columbia MD 21046	Chief People Officer	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Disposition	2012-03-01	738	$45.05	31,573	No	4	S	Direct
Common Stock	Disposition	2012-03-01	1	$45.04	31,572	No	4	S	Direct
Common Stock	Acquisiton	2012-03-02	3,125	$6.56	34,697	No	4	M	Direct
Common Stock	Disposition	2012-03-02	3,125	$45.05	31,572	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	S	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (right to buy)	Disposition	2012-03-02	3,125	$0.00	3,125	$6.56

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
12,877		2019-03-02	No	4	M	Direct

Footnotes

These sales were effected pursuant to a Rule 10b5-1 trading plan dated September 10, 2010 to satisfy tax obligations in connection with the non-reportable vesting of restricted stock units.
This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 19, 2011.
The option vests over a period of four years, with 25% of the shares underlying the option vesting on March 2, 2010, the first anniversary of the date of grant, and the remainder vesting in 36 equal monthly installments thereafter, subject to the reporting person's continuous service with the issuer as of the applicable vesting date.