Board of Directors

Gary R. Heminger
Chairman of the Board and Chief Executive Officer
MPLX GP LLC

Pamela K.M. Beall
Executive Vice President and Chief Financial Officer
MPLX GP LLC

Michael L. Beatty
Chairman
Beatty & Wozniak, P.C.

David A. Daberko
Retired Chairman of the Board
National City Corporation

Timothy T. Griffith
Senior Vice President and Chief Financial Officer
Marathon Petroleum Corporation

Christopher A. Helms
President and Chief Executive Officer
US Shale Management Company

Michael J. Hennigan
President
MPLX GP LLC

Garry L. Peiffer
Retired President
MPLX GP LLC

Dan D. Sandman
Retired Vice Chairman and Chief Legal and Administrative Officer
United States Steel Corporation

Frank M. Semple
Retired Chairman, President and Chief Executive Officer
MarkWest Energy Partners, L.P.

John P. Surma
Retired Chairman and Chief Executive Officer
United States Steel Corporation

Donald C. Templin
President
Marathon Petroleum Corporation

C. Richard Wilson
Retired President
Buckeye Partners, L.P.

For more information, please see Board Committees