Trius Therapeutics Files Registration Statement for Proposed Initial Public Offering

November 6, 2009

SAN DIEGO, Nov. 6 /PRNewswire/ -- Trius Therapeutics, Inc. announced today that it has filed a registration statement on Form S-1 with the U.S. Securities and Exchange Commission (SEC) relating to a proposed initial public offering of shares of its common stock. All shares of the common stock to be sold in the offering will be offered by the Company.

Credit Suisse Securities (USA) LLC is acting as sole book-running manager, Piper Jaffray & Co. is acting as co-lead manager and Canaccord Adams Inc. and JMP Securities are acting as co-managers for the offering. The offering will be made only by means of a prospectus. When available, copies of the preliminary prospectus relating to the offering may be obtained from Credit Suisse Securities (USA) LLC, Prospectus Department, One Madison Avenue, 1B, New York, NY 10010, Phone: (800) 221-1037.

A registration statement relating to these securities has been filed with the SEC, but has not yet become effective. These securities may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective. This press release shall not constitute an offer to sell or a solicitation of an offer to buy nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

About Trius Therapeutics

Trius Therapeutics is a biopharmaceutical company focused on the discovery, development and commercialization of innovative antibiotics for serious, life-threatening infections.

SOURCE Trius Therapeutics, Inc.