Richard T Clark

Chairman of the Board (since April 2007), President and Chief Executive Officer (since May 2005), President, Merck Manufacturing Division (June 2003-May 2005) of the Company; Chairman, President (January 2000-December 2002) and Chief Executive Officer (January 2003-June 2003), Medco Health Solutions, Inc., formerly a wholly owned subsidiary of the Company. Director, Project HOPE and United Negro College Fund; Chairman, Federal Health Care Legislation Committee of Pharmaceutical Research and Manufacturers of America; Trustee, Washington & Jefferson College and The Conference Board.