Michael J. Hennigan
Chairman, President and Chief Executive Officer
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
Maryann T. Mannen
Executive Vice President and Chief Financial Officer
Marathon Petroleum Corporation
Garry L. Peiffer
Retired President
MPLX GP LLC
John J. Quaid
Executive Vice President and Chief Financial Officer
MPLX GP LLC
Frank M. Semple
Retired Chairman, President and Chief Executive Officer
MarkWest Energy Partners, L.P.
J. Michael Stice
Professor
University of Oklahoma
John P. Surma
Non-Executive Chairman
Marathon Petroleum Corporation
For more information, please see Board Committees