Personal wealth note: Equibles reports source-backed professional activity and disclosed compensation; it does not estimate personal net worth.
Maryann T. Mannen is recorded as Chairman, CEO, Board Member and CFO at Marathon Petroleum Corp (MPC). Marathon Petroleum Corp reported in an 8-K filed November 4, 2025 that Maryann T. Mannen was appointed Chairman of the Board, effective January 1, 2026. Marathon Petroleum Corp reported in an 8-K filed May 13, 2024 that Maryann T. Mannen was appointed director, effective August 1, 2024. Marathon Petroleum Corp reported in an 8-K filed May 13, 2024 that Maryann T. Mannen was appointed Chief Executive Officer, effective August 1, 2024. Equibles holds 4 filed executive changes naming Maryann T. Mannen; each is listed under recent activity with its source filing. The proxy statement of Marathon Petroleum Corp reports total compensation of $19,016,261 for Maryann T. Mannen in fiscal 2025, including a base salary of $1,400,000. Disclosed compensation is on record for 3 fiscal years. Maryann T. Mannen has spoken on 1 earnings call across 1 company, most recently for Marathon Petroleum Corp on August 4, 2026.
“On October 29, 2025, the board of directors (the "Board") of Marathon Petroleum Corporation (the "Company") elected Maryann T. Mannen, President and Chief Executive Officer and member of the Board, as Chairman of the Board, effective as of January 1, 2026 (the "Effective Date").”
“On May 11, 2024, the Board increased the size of the Board to fourteen members and elected Ms. Mannen as a director of the Company, with such increase and election effective August 1, 2024.”
Summary generated from SEC filings and earnings-call records held by Equibles.
Recorded current and former roles; source labels appear when available.
2026-01-01–present
2024-08-01–present
2024-08-01–present
SEC 8-K
2024-01-01–present
2021-01-25–present
Recorded roles and call appearances connecting this person to public companies.
Chairman, CEO, Board Member, CFO
2021-01-25–present
Other people whose current roles at this company are on record from its filings.
Compensation components disclosed in company proxy statements. Amounts are nominal USD; total is the company-reported figure.
| Fiscal year | Company | Role | Salary | Total |
|---|---|---|---|---|
| 2025 | Marathon Petroleum Corp (MPC) | President and CEO | $1,400,000 | $19,016,261 |
| 2024 | Marathon Petroleum Corp (MPC) | President and CEO | $1,196,312 | $14,388,817 |
| 2023 | Marathon Petroleum Corp (MPC) | President and CEO | $987,808 | $8,683,978 |
Earnings-call and investor-event appearances, plus filed executive appointments or departures, newest first.
