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The following section provides information on MPLX LP’s senior management, executives, CEO and key decision makers and their roles in the organization. For more insight into MPLX LP's management and employees, unlock the full data with our company analytics monitoring tool.

Executives

Maryann T. Mannen

President; Chief Executive Officer; Chairman Executive Board Since: 2026 Age: 62

C. Kristopher Hagedorn

Executive Vice President; Chief Financial Officer; Director Executive Board

Gregory S. Floerke

Chief Operating Officer; Executive Vice President Senior Management Since: 2020 Age: 61

Molly R. Benson

Chief Legal Officer; Secretary Senior Management Since: 2018 Age: 58

Erin M. Brzezinski

Vice President; Controller Senior Management
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