NOVEMBER 18, 2005 CONFIDENTIAL Dr. Casey Case 605 Barroilhet Avenue San Mateo, CA 94402 Dear Casey:Separation Agreement • November 22nd, 2005 • Sangamo Biosciences Inc • Biological products, (no disgnostic substances) • California
Contract Type FiledNovember 22nd, 2005 Company Industry JurisdictionThis document, upon your signature, will constitute the agreement between you and Sangamo BioSciences, Inc. (the “Company”), on the terms of your separation from employment (the “Agreement”). It is understood that both you and the Company want to preclude any dispute arising out of your employment, your separation, or any other matter involving you and the Company and also wish to preserve the good will that exists between you and the Company.