Former Chairman and CEO, Sigma-Aldrich Corporation
David R. Harvey Former Chairman and CEO. He served as Chief Executive Officer for more than five years until December 31, 2005 and served as President for more than five years until August 2004. He has been a director of the Company since 1981. He is also a director of CF Industries. Age 68.
Vice President for Science and Technology, Medtronic Inc.
Rebecca M. Bergman Vice President for Science and Technology of Medtronic Inc., a manufacturer of products and therapies used in the diagnosis, prevention and monitoring of chronic medical conditions, Minneapolis, Minnesota, for more than five years. Age 51.
Former Executive Vice President and Chief Financial Officer S.C. Johnson & Son, Inc.
W. Lee McCollum Former Executive Vice President and Chief Financial Officer of S.C. Johnson & Son, Inc., a manufacturer and marketer of consumer package goods, Racine, Wisconsin, for more than five years. He has been a director of the Company since 2001. He is also a director of Johnson Outdoors, Inc. and Johnson Financial Group. Age 58.
Chairman, President and CEO Sigma-Aldrich Corporation
Jai P. Nagarkatti Chairman, President and Chief Executive Officer of the Company since January 1, 2006 and Chairman of the Board of Directors since May 5, 2009. He served as President and Chief Operating Officer from August 2004 to December 31, 2005. Previously he served as the President of the Company's Scientific Research business unit from December 2002 to August 2004. He has been a director of the Company since November 2005. Age 61.
Managing Director of Avi Nash LLC (Former partner of Goldman Sachs)
Avi M. Nash Managing Director of Avi Nash LLC, a management consulting firm in Greenwich, Connecticut, that works with global chemical industry leaders in mergers and acquisitions, capital market transactions and other strategic matters. Prior to launching his firm in 2003, he was a partner at Goldman Sachs, New York, New York, for more than five years. He has been a director of the Company since November 2005. Age 55.
Executive Vice President for Science and Technology and President, Lilly Research Laboratories of Eli Lilly and Company
Steven M. Paul Executive Vice President for Science and Technology and President of the Lilly Research Laboratories of Eli Lilly and Company, a pharmaceutical company that engages in the discovery, development, manufacture and sale of pharmaceutical products, Indianapolis, Indiana, since July 2003. He was Group Vice President of Therapeutic Area Discovery Research and Clinical Investigation for Lilly Research Laboratories, a division of Eli Lilly and Company, for more than five years until July 2003. He has been a director of the Company since November 2006. He is also a director of the Lilly Foundation, the Foundation of the NIH, Butler University and the Indianapolis Zoological Society. Age 57.
President of Reinhard & Associates (Former CFO, Dow Chemical Company)
J. Pedro Reinhard. President of Reinhard & Associates. He was Executive Vice President and Chief Financial Officer of The Dow Chemical Company, a manufacturer of chemicals, plastic materials, agricultural and other specialized products, Midland, Michigan, for more than five years until December 2005 and September 2005, respectively. He has been a director of the Company since 2001. He is also a director of Colgate Palmolive Co. and Royal Bank of Canada. Age 62.
Timothy R.G. Sear Former Chairman of Alcon Laboratories, Inc., a manufacturer of ophthalmic pharmaceuticals, surgical instruments and accessories and consumer vision care products, Fort Worth, Texas, for more than five years until April 2005. He also served as President and Chief Executive Officer of Alcon Laboratories, Inc. for more than five years until October 2004. He has been a director of the Company since May 2005. He is also a director of GTX. Age 70.
D. Dean Spatz CEO of Watasso Ventures, a company that specializes in investing in and actively participating in the management and development of entrepreneurial start-up companies. Former Chairman and Chief Executive Officer of Osmonics, Inc., a manufacturer of water purification, fluid separation and fluid handling products and equipment, Minnetonka, Minnesota. He was founder, Chairman and Chief Executive Officer of Osmonics, Inc. for more than five years until February 2003 when Osmonics, Inc. was acquired by GE Infrastructure, a unit of General Electric Company. He has been a director of the Company since 1994. He also serves as a director of three privately held companies. Age 63.
Barrett A. Toan Former Chairman of Express Scripts, Inc., a pharmacy benefits management company, St. Louis, Missouri. He was Chairman of Express Scripts, Inc. for more than five years until May 2006. He also served as Chief Executive Officer of Express Scripts, Inc. for more than five years until March 2005. He has been a director of the Company since 2001. He is also a director of Express Scripts, Inc. and Genworth Financial, Inc. Age 60.
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Former Chairman and CEO, Sigma-Aldrich Corporation 
Vice President for Science and Technology, Medtronic Inc.
Former Executive Vice President and Chief Financial Officer
Chairman, President and CEO Sigma-Aldrich Corporation
President of Reinhard & Associates (Former CFO, Dow Chemical Company)
Former Chairman and CEO of Express Scripts, Inc.
