Sunesis Pharmaceuticals Sets Price for Initial Public Offering

South San Francisco, CA - September 27, 2005 - Sunesis Pharmaceuticals, Inc. today announced the initial public offering of 6,000,000 shares of its common stock at a price of $7.00 per share. Shares of Sunesis' common stock will be traded on the Nasdaq National Market under the trading symbol "SNSS". Sunesis has granted the underwriters a 30-day over-allotment option to purchase an additional 900,000 shares. Lehman Brothers Inc. and SG Cowen & Co., LLC acted as joint book-running managers for this offering, and Needham & Company, Inc. served as co-manager.