Board of Directors

Michael J. Hennigan
Executive Chairman
MPLX GP LLC

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

Christine S. Breves
Retired Executive Vice President, Business Transformation
United States Steel Corporation 

C. Kristopher Hagedorn
Executive Vice President and Chief Financial Officer
MPLX GP LLC

Maryann T. Mannen
President and Chief Executive Officer
MPLX GP LLC

Garry L. Peiffer
Retired President
MPLX GP LLC

John J. Quaid
Executive Vice President and Chief Financial Officer
Marathon Petroleum Corporation

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

J. Michael Stice
Professor, University of Oklahoma, and Former Chief Executive Officer, Access Midstream

John P. Surma
Lead Director
Marathon Petroleum Corporation

For more information, please see Board Committees