Committee Composition Audit Committee Compensation Committee Nominating and Corporate Governance Committee Paul R. Auvil Audit Committee Mark S. Blumenkranz, M.D. Audit Committee Bruce W. Dunlevie Nominating and Corporate Governance Committee Kalen F. Holmes, Ph.D. Compensation Committee David P. Kennedy Compensation Committee Freda Lewis-Hall, M.D. Nominating and Corporate Governance Committee Amir Dan Rubin Robert R. Schmidt Compensation Committee Nominating and Corporate Governance Committee David B. Singer Audit Committee = Chairperson = Member = Chairman of the Board