SOUTH SAN FRANCISCO, Calif., Sept. 10 /PRNewswire-FirstCall/ -- Exelixis, Inc. (Nasdaq: EXEL - News) announced today that it has agreed to sell 7,000,000 shares of its common stock pursuant to an effective automatic shelf registration statement. Exelixis will also grant the underwriter a 30-day option to purchase up to an additional 1,050,000 shares of common stock. All of the shares in the offering will be sold by Exelixis. Goldman, Sachs & Co. is acting as the sole underwriter for the offering. Closing of the offering is expected to occur on or about September 13, 2007, subject to customary closing conditions.