Committee Composition Audit Committee Compensation Committee Nominating and Corporate Governance Committee Dennis Fenton, Ph.D. Compensation Committee Laura J. Hamill Audit Committee Compensation Committee Magda Marquet, Ph.D. Audit Committee Hollings Renton Nominating and Corporate Governance Committee John Schmid Audit Committee Compensation Committee James N. Topper, M.D., Ph.D Nominating and Corporate Governance Committee J. Anthony Ware, M.D. Audit Committee Nominating and Corporate Governance Committee = Chairperson = Member = Financial Expert