SourceFire President and COO Stock Transactions

Columbia-based cyber security firm SourceFire Inc (NASDAQ: FIRE),President and Chief Operating Officermade the following stock transactions on April 17, 2012.

Tom McDonough disposed of 4,000 common stock shares range of $49.02 to $49.69, with an average price of $49.4008, and totaling $197,603.20 under general transaction code S (Open market or private sale of non-derivative or derivative security). 69,867beneficially and directly owned shares remained April 17, 2012.

On April 17, 2012, SourceFire Inc (NASDAQ: FIRE)opened at $49.00; it reached a high of $50.75 and a low of $49.00, the stock closed at $49.84 on average volume of 574,667. The company has a market cap of approximately $1.47 billion; its 52 week high was $51.73.

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