Marathon Petroleum Corporation (MPC) Insider Trading
Over the last 3 months, MPC insiders made 0 open-market buys and 6 sales, a net sale of -$6.6M (SEC Form 4). Over the last 6 months, 1254 institutions increased and 1409 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
6
Net (3m)
-$6.6M
Insider trades by month Buys Sells
Aug
Feb
Mar
May
Jun
Aug
Context3-month price +44.3%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 31, 2026 | Brzezinski Erin Mofficer: VP and Controller | Sell | 570 | $362.79 |
| Aug 19, 2026 | Benson Molly Rofficer: Chief Legal Ofc & Corp Sec | Option | 7,196 | $47.73 |
| Aug 19, 2026 | Benson Molly Rofficer: Chief Legal Ofc & Corp Sec | Sell | 5,000 | $358.57 |
| Aug 19, 2026 | Benson Molly Rofficer: Chief Legal Ofc & Corp Sec | Option | 5,000 | $47.73 |
| Aug 17, 2026 | Lyon Shawn Mofficer: SVP Log & Storage, MPLX GP LLC | Sell | 2,500 | $350.00 |
| Aug 14, 2026 | Henschen Michael A IIofficer: Ex VP, Refining | Sell | 6,011 | $341.56 |
| Aug 4, 2026 | Mannen Maryann T.director, officer: Chairman, President & CEO | Tax | 908 | $311.78 |
| Jun 8, 2026 | Henschen Michael A IIofficer: Ex VP, Refining | Sell | 1,372 | $268.75 |
| Jun 8, 2026 | Henschen Michael A IIofficer: Ex VP, Refining | Option | 4,964 | $49.94 |
| Jun 8, 2026 | Henschen Michael A IIofficer: Ex VP, Refining | Sell | 4,964 | $268.85 |
| May 15, 2026 | Hessling Ricky D.officer: Chief Commercial Officer | Sell | 1,000 | $250.00 |
| May 4, 2026 | STICE J MICHAELdirector | Grant | 728 | — |
| May 4, 2026 | SURMA JOHN Pdirector | Grant | 728 | — |
| May 4, 2026 | SEMPLE FRANK Mdirector | Grant | 728 | — |
| May 4, 2026 | Paterson Eileen P.director | Grant | 728 | — |
| May 4, 2026 | Rucker Kim K.W.director | Grant | 728 | — |
| May 4, 2026 | CAMPBELL JEFFREY Cdirector | Grant | 728 | — |
| May 4, 2026 | Ellison-Taylor Kimberly Ndirector | Grant | 728 | — |
| May 4, 2026 | Al Khayyal Abdulaziz Fahddirector | Grant | 728 | — |
| May 4, 2026 | Bayh Evandirector | Grant | 728 | — |
| May 4, 2026 | COHEN JONATHAN Zdirector | Grant | 728 | — |
| Mar 17, 2026 | Hessling Ricky D.officer: Chief Commercial Officer | Sell | 1,626 | $228.18 |
| Mar 13, 2026 | Hessling Ricky D.officer: Chief Commercial Officer | Sell | 478 | $228.00 |
| Mar 13, 2026 | Hessling Ricky D.officer: Chief Commercial Officer | Sell | 559 | $230.00 |
| Mar 13, 2026 | Hessling Ricky D.officer: Chief Commercial Officer | Sell | 325 | $226.00 |
| Mar 13, 2026 | Hessling Ricky D.officer: Chief Commercial Officer | Sell | 1,485 | $224.51 |
| Mar 3, 2026 | Benson Molly Rofficer: Chief Legal Ofc & Corp Sec | Tax | 171 | $206.30 |
| Mar 3, 2026 | Henschen Michael A IIofficer: Ex VP, Refining | Tax | 191 | $206.30 |
| Mar 3, 2026 | Brzezinski Erin Mofficer: VP and Controller | Tax | 49 | $206.30 |
| Mar 3, 2026 | Benson Molly Rofficer: Chief Legal Ofc & Corp Sec | Tax | 348 | $206.30 |
Source: MPC SEC Form 4 filings, latest Aug 31, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their MPC positions over the last 6 months (SEC Form 13F).
Increased
1254
New positions
528
Reduced
1409
Sold out
103
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 26.0M | Aug 7, 2026 |
| BLACKROCK, INC. | Increased | 24.4M | May 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 19.2M | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 19.1M | Aug 13, 2026 |
| STATE STREET CORP | Increased | 19.0M | May 15, 2026 |
| STATE STREET CORP | Reduced | 18.5M | Aug 7, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 15.7M | May 8, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 15.6M | Aug 13, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 8.4M | Aug 12, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 7.8M | May 15, 2026 |
| MORGAN STANLEY | Reduced | 6.1M | May 15, 2026 |
| MORGAN STANLEY | Reduced | 5.9M | Aug 13, 2026 |
| RAYMOND JAMES FINANCIAL INC | Reduced | 5.8M | May 14, 2026 |
| RAYMOND JAMES FINANCIAL INC | Reduced | 5.7M | Aug 14, 2026 |
| BOSTON PARTNERS | Reduced | 5.6M | May 11, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.