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Cell Genesys to Present at the Rodman & Renshaw 5th Annual Global Healthcare Conference May 12, 2008 Cell Genesys Announces Registered Direct Equity Offering of $30 Million May 12, 2008 Cell Genesys to Present at the Leerink Swann Solid Tumors Roundtable Conference May 2, 2008 Cell Genesys Reports First Quarter 2008 Financial Results May 1, 2008 Cell Genesys to Webcast First Quarter 2008 Conference Call April 24, 2008