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SEC data last refreshed 13 May 2026, 23:38 UTC
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Marathon Petroleum Corp (MPC) CEO History | CEO Tracker
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Marathon Petroleum Corp
MPC
Energy
NYQ
$71.1B
MPC SEC filings last scanned 13 May 2026, 22:50 UTC
CEO Timeline
Maryann T. Mannen
Current
Aug 2024 — Present
(1y 9mo)
Maryann T. Mannen was appointed Chief Executive Officer of Marathon Petroleum Corporation, effective August 1, 2024, succeeding Michael J. Hennigan.
2 source filings — 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