June 23, 2008 VIA HAND DELIVERY Mr. Gregory Schafer Onyx Pharmaceuticals, Inc. 2100 Powell Street Emeryville, CA 94608 Re: Separation and Consulting Agreement Dear Greg:Separation and Consulting Agreement • June 23rd, 2008 • Onyx Pharmaceuticals Inc • Biological products, (no disgnostic substances) • California
Contract Type FiledJune 23rd, 2008 Company Industry JurisdictionThis letter sets forth the terms of the separation agreement (the “Agreement”) that Onyx Pharmaceuticals, Inc. (the “Company”) is offering to you to facilitate your separation from the Company: