SNORT prepares for IPO

Open source innovator and SNORT creator, Sourcefire, Inc., a leader in network intrusion prevention, announced today the pricing of its initial public offering of 5,770,000 shares of its common stock at $15.00 per share (before underwriting discounts and commissions). Of those shares, Sourcefire is selling 5,320,000 shares and selling stockholders are selling 450,000 shares. The estimated net proceeds to Sourcefire are $71.8 million. Sourcefire will not receive any proceeds from the sale of shares by the selling stockholders. In addition, Sourcefire has granted the underwriters an option to purchase up to an additional 865,500 shares of common stock to cover over-allotments, if any. The common stock will be listed on the Nasdaq Global Market under the symbol "FIRE".

Morgan Stanley & Co. Incorporated is acting as the sole book-running manager for the offering and Lehman Brothers Inc. is acting as co-lead manager. In addition, UBS Securities LLC and Jefferies & Company, Inc. are acting as co-managers of the offering. A copy of the prospectus relating to this offering may be obtained by contacting Morgan Stanley & Co. Incorporated, 1585 Broadway, New York, NY 10036, Attention: Prospectus Department, by calling 212-761-6775 or by emailing prospectus@morganstanley.com.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy any securities nor shall there be any sale of such securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities law of any such state or jurisdiction. Any offer, if at all, will be made only by means of a prospectus.

For more information about Sourcefire, please visit http://www.sourcefire.com.