Board of Directors

BOARD OF DIRECTORS

	Richard T. Clark Chairman of the Board, president and chief executive officer, Merck & Co., Inc. New Merck director since November 3, 2009

	Leslie A. Brun Chairman and chief executive officer, Sarr Group, LLC (investment holding company). Non-executive chairman, Automatic Data Processing, Inc. Director, Philadelphia Media Holdings, LLC, and Broadridge Financial Solutions, Inc. New Merck director since November 3, 2009

	Thomas R. Cech, Ph.D. Director, Colorado Institute for Molecular Biotechnology, University of Colorado. New Merck director since November 3, 2009

	Thomas H. Glocer Chief executive officer, Thomson Reuters Corporation (information and services company for businesses and professionals). Director, Thomson Reuters Corporation, Partnership for New York City. New Merck director since November 3, 2009

	Steven F. Goldstone Retired chairman and chief executive officer, RJR Nabisco, Inc. Managing partner, Silver Spring Group (private investment firm). Non-executive chairman, ConAgra Foods, Inc. Director, Greenhill & Co., Inc. New Merck director since November 3, 2009

	William B. Harrison, Jr. Retired chairman of the board, JPMorgan Chase & Co. (financial services). Director, Cousins Properties Incorporated and Lincoln Center for the Performing Arts. New Merck director since November 3, 2009

	Harry R. Jacobson, M.D. Vice chancellor, Health Affairs, Emeritus (since June 2009), Vanderbilt University. Non-executive chairman, CeloNova BioSciences, Inc. Director, HealthGate Data Corporation, Ingram Industries, Inc. and Kinetic Concepts, Inc. New Merck director since November 3, 2009

	William N. Kelley, M.D. Professor of Medicine, Biochemistry and Biophysics, University of Pennsylvania School of Medicine. Director, Beckman Coulter, Inc., GenVec, Inc., and Polymedix, Inc. New Merck director since November 3, 2009

	C. Robert Kidder Chief executive officer, 3Stone Advisors LLC (private investment firm). Director, Chrysler Group LLC and Morgan Stanley. New Merck director since November 3, 2009

	Rochelle B. Lazarus Chairman, Ogilvy & Mather Worldwide (advertising and marketing communication company). Director, General Electric, New York Presbyterian Hospital, American Museum of Natural History and World Wildlife Fund. New Merck director since November 3, 2009

	Carlos E. Represas Chairman, Nestle Group Mexico. Director, Bombardier Inc. and Vitro S.A. de C.V. New Merck director since November 3, 2009

	Patricia F. Russo Former chief executive officer and director, Alcatel-Lucent. Director, Alcoa, Inc., and General Motors. New Merck director since November 3, 2009

	Thomas E. Shenk, Ph.D. Elkins Professor, Department of Molecular Biology, Princeton University. Director, Cell Genesys, Inc., and CV Therapeutics, Inc. New Merck director since November 3, 2009

	Anne M. Tatlock Retired chairman of the board and chief executive officer, Fiduciary Trust Company International (global asset management services). Director, Fortune Brands, Inc., and Franklin Resources, Inc. New Merck director since November 3, 2009

	Samuel O. Thier, M.D. Lead director of the board. Professor of Medicine and Health Care Policy, Emeritus, Harvard Medical School. Director, Charles River Laboratories, Inc. New Merck director since November 3, 2009

	Craig B. Thompson, M.D. Director, Abramson Cancer Center and Professor of Medicine, University of Pennsylvania School of Medicine. Chairman of the Medical Advisory Board, Howard Hughes Medical Institute. Member of the Advisory Board, M.D. Anderson Cancer Center. New Merck director since November 3, 2009

	Wendell P. Weeks Chairman and chief executive officer, Corning Incorporated (technology company in telecommunications, information display and advanced materials industries). Director, Corning Incorporated. New Merck director since November 3, 2009

	Peter C. Wendell Managing director, Sierra Ventures (technology-oriented venture capital firm). Chairman, Princeton University Investment Company. New Merck director since November 3, 2009