Marathon Petroleum

MPC

EnergyNYQ$71.1B

MPC SEC filings last scanned 22 Aug 2026, 16:42 UTC

CEO Timeline

Maryann T. MannenCurrent

Aug 2024 — Present(2y 1mo)

Maryann T. Mannen was appointed Chief Executive Officer of Marathon Petroleum Corporation, effective August 1, 2024, succeeding Michael J. Hennigan.

1 source filing — click to expand

Michael J. Hennigan

Mar 2020 — Aug 2024(4y 5mo)

Michael J. Hennigan was appointed President and Chief Executive Officer of Marathon Petroleum Corporation, effective immediately.

transitioned to Executive Chairman

3 source filings — click to expand

Gary R. Heminger

? — Nov 2019

planned retirement

1 source filing — click to expand