Governance

Roger W. Crandall (2*, 4, 5)
Chairman, President and
Chief Executive Officer
Massachusetts Mutual
Life Insurance Company
Springfield, Massachusetts
Karen H. Bechtel (1, 4)
Managing Director, Retired
The Carlyle Group
New York, New York
Mark T. Bertolini (2, 3*, 5)
Chairman and Chief Executive Officer,
Retired
Aetna Inc.
Hartford, Connecticut
Kathleen A. Corbet (4, 5)
Founder and Principal
Cross Ridge Capital, LLC
New Canaan, Connecticut
Former President
Standard & Poor’s
New York, New York

James H. DeGraffenreidt, Jr. (1, 3)
Chairman and Chief Executive Officer,
Retired
WGL Holdings, Inc.
Washington, D.C.
Isabella D. Goren (1*, 2, 4)
Former Chief Financial Officer
American Airlines, Inc. and
AMR Corporation
Fort Worth, Texas
Shelley B. Leibowitz (4, 5)
President and Founder
SL Advisory, LLC,
Stamford, Connecticut
Former Chief Information Officer
The World Bank,
Washington, DC
Jeffrey M. Leiden, M.D., Ph.D. (2, 3, 5*)
Chairman, President and
Chief Executive Officer
Vertex Pharmaceuticals Incorporated
Boston, Massachusetts

Laura J. Sen (3, 5)
Former Non-Executive Chairman
and Former Chief Executive Officer
BJ’s Wholesale Club, Inc.
Westborough, Massachusetts
William T. Spitz (1, 2, 4*)
Principal, Co-Founder and Director
Diversified Trust Company
Nashville, Tennessee
Vice Chancellor for
Investments Emeritus
Vanderbilt University
Nashville, Tennessee
H. Todd Stitzer (1, 2, 4)
Lead Director
Massachusetts Mutual
Life Insurance Company
Springfield, Massachusetts
Former Chief Executive Officer
Cadbury PLC
London, United Kingdom

Board of Directors