Companies
Marathon Petroleum
Oil and gasFindlay, OhioMPCAbout 18,500 employees
More about Marathon Petroleum
Oil refiner that makes and sells gasoline, diesel and other fuels, and controls the pipeline partnership MPLX
Revenue
$132.7B
Fiscal 2025, down about 4%
Employees
About 18,500
As of December 2025, full- and part-time
Stock
MPC
New York Stock Exchange
Headquarters
Findlay, Ohio
CEO
Maryann Mannen
Since August 2024; also chairman since January 2026
Main businessesRefining & Marketing, Midstream (MPLX), Renewable Diesel
Current strategyInvesting in high-return projects to make its refineries more competitive while MPLX reshapes its midstream portfolio, including the $980M sale of its Rockies assets in November 2025
CompetitorsValero, Phillips 66, HF Sinclair
Related companiesValero EnergyPhillips 66
Checked October 11, 2026 · Sources: sec.gov, sec.gov (2)
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