September 6, 2006 Fabio Benedetti, M.D. Onyx Pharmaceuticals, Inc. 2100 Powell Street Emeryville, CA 94608 Dear Fabio:Onyx Pharmaceuticals Inc • September 7th, 2006 • Biological products, (no disgnostic substances) • California
Company FiledSeptember 7th, 2006 Industry JurisdictionThis letter sets forth the terms of our agreement with respect to the termination of your employment with Onyx Pharmaceuticals, Inc. (“Onyx” or the “Company”).