Robert L. Van Nostrand

Director

Mr. Van Nostrand has served as a member of Achillion’s Board of Directors since April 2007 and is Chair of the Audit Committee and serves as a member of the Compensation Committee. Mr. Van Nostrand formerly served as the Executive Vice President and Chief Financial Officer of Aureon Laboratories, Inc, and as Chief Financial Officer of both AGI Dermatitis and OSI Pharmaceuticals, where he also served as Chief Compliance Officer.