🕵️ Marathon Petroleum Corp ($MPC)
SEC insider & ownership activity, last 12 months · CIK 1510295 · every row links its SEC filing
Over the last 12 months insiders sold $13.9M with no open-market buying against it. Molly R. Benson sold $6.2M through a 10b5-1 trading plan in 3 lots (Aug). 3 planned sales are pending, the largest $875K (Shawn M. Lyon). No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 5 sellers, $13.9M (17 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Molly R. Benson | 0 | – | 3 | $6.2M | Aug 17, 2026 |
| Michael A. Henschen II | 0 | – | 4 | $4.8M | Aug 12, 2026 |
| Shawn M. Lyon | 0 | – | 3 | $1.4M | Aug 31, 2026 |
| Ricky D. Hessling | 0 | – | 6 | $1.3M | May 13, 2026 |
| Erin M. Brzezinski | 0 | – | 1 | $207K | Aug 27, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Vanguard Capital Management | 7.5% | 13G | Apr 30, 2026 | filing ↗ | |
| BlackRock, Inc. | 6.8% | 13G | Apr 23, 2025 | filing ↗ | |
| Vanguard Portfolio Management | 5.3% | 13G | Apr 29, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Shawn M. Lyon | $376K | Aug 31, 2026 | filing ↗ |
| Shawn M. Lyon | $157K | Aug 28, 2026 | filing ↗ |
| Erin M. Brzezinski | $207K | Aug 27, 2026 | filing ↗ |
| Hagedorn Carl Kristopher | $324K | Aug 24, 2026 | filing ↗ |
| Molly R. Benson | $6.2M | Aug 17, 2026 | filing ↗ |
| Shawn M. Lyon | $875K | Aug 13, 2026 | filing ↗ |
| Michael A. Henschen II | $2.1M | Aug 12, 2026 | filing ↗ |
| Michael A. Henschen II | $1.7M | Jun 4, 2026 | filing ↗ |
| Ricky D. Hessling | $250K | May 13, 2026 | filing ↗ |
| Michael J. Hennigan | $6.1M | Mar 24, 2026 | filing ↗ |
| Michael J. Hennigan | $6.0M | Mar 19, 2026 | filing ↗ |
| Ricky D. Hessling | $371K | Mar 13, 2026 | filing ↗ |
| Ricky D. Hessling | $238K | Mar 12, 2026 | filing ↗ |
| Ricky D. Hessling | $407K | Mar 11, 2026 | filing ↗ |
| John J. Quaid | $1.1M | Mar 11, 2026 | filing ↗ |
| Michael J. Hennigan | $5.5M | Mar 6, 2026 | filing ↗ |
| Michael J. Hennigan | $5.2M | Mar 2, 2026 | filing ↗ |
| Michael J. Hennigan | $5.0M | Feb 26, 2026 | filing ↗ |
| Michael A. Henschen II | $1.1M | Feb 12, 2026 | filing ↗ |
| Michael J. Hennigan | $5.1M | Feb 6, 2026 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Aug 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 4, 2026 | filing ↗ |
| Other events (8.01) | Jun 26, 2026 | filing ↗ |
| Earnings (2.02) | May 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 5, 2026 | filing ↗ |
| Shareholder vote (5.07) | Apr 29, 2026 | filing ↗ |
| Material agreement (1.01) | Apr 7, 2026 | filing ↗ |
| Agreement terminated (1.02) | Apr 7, 2026 | filing ↗ |
| Earnings (2.02) | Apr 7, 2026 | filing ↗ |
| New financial obligation (2.03) | Apr 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 7, 2026 | filing ↗ |
| Earnings (2.02) | Feb 3, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 3, 2026 | filing ↗ |
| Officer/director changes (5.02) | Dec 12, 2025 | filing ↗ |
| Other events (8.01) | Dec 12, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 12, 2025 | filing ↗ |
| Earnings (2.02) | Nov 4, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 4, 2025 | filing ↗ |
| Officer/director changes (5.02) | Oct 29, 2025 | filing ↗ |
| Other events (8.01) | Oct 29, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 29, 2025 | filing ↗ |