John H. Hammergren Chairman of the Board, President and Chief Executive Officer

Mr. Hammergren, age 48, was named Chairman of the Board effective July 31, 2002 and was named President and Chief Executive Officer of the Company effective April 1, 2001. He was Co-President and Co-Chief Executive Officer of the Company from July 1999 until April 2001. He was Executive Vice President of the Company and President and Chief Executive Officer of the Supply Management Business from January 1999 to July 1999, Group President, McKesson Health Systems from 1997 to 1999 and Vice President of the Company since 1996. He is a director of Nadro, S.A. de C.V. (Mexico) and Verispan LLC, entities in which the Company holds interests, and a director of the Hewlett-Packard Company. He has been a director of the Company since 1999.

Andy D. Bryant Executive Vice President and Chief Administrative Officer Intel Corporation

Mr. Bryant, age 57, has served as Executive Vice President and Chief Administrative Officer of Intel Corporation since October 2007. He served as Intel’s Chief Financial Officer from 1994 to October 2007. Mr. Bryant joined Intel in 1981 and held a number of management positions before becoming Chief Financial Officer. He is also a director of Columbia Sportswear Company and Kryptiq, Inc. He has been a director of the Company since January 2008.

Wayne A. Budd Senior Counsel Goodwin Procter LLP

Mr. Budd, age 65, joined the law firm of Goodwin Procter LLP as Senior Counsel in October 2004. He had been Senior Executive Vice President and General Counsel and a director of John Hancock since 2000 and a director of John Hancock Life Insurance Company since 1998. From 1996 to 2000, Mr. Budd was Group President-New England for Bell Atlantic Corporation (now Verizon Communications, Inc.). From 1994 to 1997, he was a Commissioner, United States Sentencing Commission and from 1993 to 1996, Mr. Budd was a senior partner at the law firm of Goodwin Procter. From 1992 to 1993, he was the Associate Attorney General of the United States and from 1989 to 1992, he was United States Attorney for the District of Massachusetts. Mr. Budd has been a director of the Company since October 2003. He is a member of the Audit Committee and the Committee on Directors and Corporate Governance.

Alton F. Irby III Chairman and Partner London Bay Capital

Mr. Irby, age 66, is the founding partner of London Bay Capital, a privately held investment firm, since May 2006. He was founding partner of Tricorn Partners LLP, a privately held investment bank from May 2003 to May 2006, a partner of Gleacher & Co. Ltd. from January 2001 until April 2003, and was Chairman and Chief Executive Officer of HawkPoint Partners, formerly known as National Westminster Global Corporate Advisory, from 1997 until 2000. He was a founding partner of Hambro Magan Irby Holdings from 1988 to 1997. He is the chairman of ContentFilm plc and also serves as a director of Catlin Group Limited. He is also a director of an indirect wholly-owned subsidiary of the Company, McKesson Information Solutions UK Limited. Mr. Irby has been a director of the Company since 1999. He is Chair of the Compensation Committee and a member of the Finance Committee.

M. Christine Jacobs Chairman, President and Chief Executive Officer Theragenics Corporation

Ms. Jacobs, age 56, is the Chairman, President, Chief Executive Officer and director of Theragenics Corporation, a manufacturer of prostate cancer treatment devices and surgical products. She has held the position of Chairman since May 2007, and previously from 1998 to 2005. She was Co-Chairman of the Board from 1997 to 1998 and was elected President in 1992 and Chief Executive Officer in 1993. Ms. Jacobs has been a director of the Company since 1999. She is a member of the Compensation Committee and the Committee on Directors and Corporate Governance.

Marie L. Knowles Executive Vice President and Chief Financial Officer, Retired ARCO

Ms. Knowles, age 60, retired from Atlantic Richfield Company (“ARCO”) in 2000 and was Executive Vice President and Chief Financial Officer from 1996 until 2000 and a director from 1996 until 1998. She joined ARCO in 1972. Ms. Knowles is a member of the Board of Trustees of the Fidelity Funds. She has been a director of the Company since March 2002. She is the Chair of the Audit Committee and a member of the Finance Committee.

David M. Lawrence, M.D. Chairman of the Board and Chief Executive Officer, Retired Kaiser Foundation Health Plan, Inc. and Kaiser Foundation Hospitals

Dr. Lawrence, age 66, retired as Chairman Emeritus of Kaiser Foundation Health Plan, Inc. and Kaiser Foundation Hospitals in December 2002. He served as Chairman of the Board from 1992 to May 2002 and Chief Executive Officer from 1991 to May 2002 of Kaiser Foundation Health Plan, Inc. and Kaiser Foundation Hospitals. He held a number of management positions with these organizations prior to assuming these positions, including Vice Chairman of the Board and Chief Operating Officer. He is a director of Agilent Technologies, Dynavax Technologies Corporation and Raffles Medical Group, Inc. Dr. Lawrence has been a director of the Company since January 2004. He is a member of the Compensation Committee and the Commitee on Directors and Corporate Governance.

Edward A. Mueller Chairman and Chief Executive Officer Qwest Communications International Inc.

Mr. Mueller, age 60, has served as Chairman and Chief Executive Officer of Qwest Communications International Inc. since August 2007. He served as Chief Executive Officer of Williams-Sonoma, Inc. from January 2003 to July 2006. Prior to joining Williams-Sonoma, Inc., Mr. Mueller served as President and Chief Executive Officer of Ameritech Corporation, a subsidiary of SBC Communications, Inc., from 2000 to 2002. He is also a director of The Clorox Company. He has been a director of the Company since April 2008.

James V. Napier Chairman of the Board, Retired Scientific-Atlanta, Inc.

Mr. Napier, age 70, retired as Chairman of the Board, Scientific-Atlanta, Inc., a cable and telecommunications manufacturing company, in November 2000. He had been the Chairman of the Board since 1993. He is also a director of Vulcan Materials Company, Intelligent Systems, Inc. and WABTEC Corporation. Mr. Napier has been a director of the Company since 1999. He is Chair of the Finance Committee and a member of the Compensation Committee.

Jane E. Shaw Chairman of the Board and Chief Executive Officer, Retired Aerogen, Inc.

Dr. Shaw, age 68, retired as Chairman of the Board of Aerogen, Inc., a company specializing in the development of products for improving respiratory therapy, in October 2005; she had held that position since 1998. She retired as Chief Executive Officer of that company in June 2005. She is a director of Intel Corporation. Dr. Shaw has been a director of the Company since 1992. She is the Chair of the Committee on Directors and Corporate Governance and a member of the Audit Committee. She also serves as the Board's Presiding Director.