Committee Composition

Director Name	Audit Committee	Compensation Committee	Nominating & Corporate Governance Committee
Sandra Milligan, MD		Member of the Compensation CommitteeCompensation Committee	Chairperson of the Nominating & Corporate Governance CommitteeNominating & Corporate Governance Committee
John Quisel, PhD, JD	Member of the Audit CommitteeAudit Committee
Skye Drynan	Chairperson of the Audit CommitteeAudit Committee
Steven D. Nathan, MD			Member of the Nominating & Corporate Governance CommitteeNominating & Corporate Governance Committee
Thomas Daniel, MD		Member of the Compensation CommitteeCompensation Committee	Member of the Nominating & Corporate Governance CommitteeNominating & Corporate Governance Committee
Russell J. Cox	Member of the Audit CommitteeAudit Committee	Chairperson of the Compensation CommitteeCompensation Committee

= Chairperson = Member

Investors