MPC insider buying and SEC filings, explained
Marathon Petroleum Corp · CIK 1510295
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Company profile
- Exchanges
- NYSE
- Industry (SIC)
- Petroleum Refining
- State of incorporation
- DE
- Fiscal year end
- Dec 31
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$7.7M
Planned sales (10b5-1)
$6.2M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Aug 28–31, 2026 | Sale | Shawn M Lyon (SVP Log & Storage, MPLX GP LLC) sold 1,425 shares between Aug 28 and Aug 31 at about $373.59 ($532K). Holdings down 11% to 11,194 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 1, 2026 |
| Aug 27, 2026 | Sale | Erin M Brzezinski (VP and Controller) sold 570 shares at $362.79 ($207K). Holdings down 27% to 1,576 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 31, 2026 |
| Aug 17, 2026 | Planned (10b5-1) | Molly R Benson (Chief Legal Ofc & Corp Sec) sold 17,196 shares at $358.57 ($6.2M), marked as a 10b5-1 plan trade. Holdings down 36% to 30,334 shares. | SEC filing Filed Aug 19, 2026 |
| Aug 13, 2026 | Sale | Shawn M Lyon (SVP Log & Storage, MPLX GP LLC) sold 2,500 shares at $350.00 ($875K). Holdings down 17% to 12,619 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 17, 2026 |
| Aug 12, 2026 | Sale | Michael A Henschen II (Ex VP, Refining) sold 6,011 shares at $341.56 ($2.1M). Holdings down 36% to 10,889 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 14, 2026 |
| Jun 4, 2026 | Sale | Michael A Henschen II (Ex VP, Refining) sold 6,336 shares at about $268.83 ($1.7M). Holdings down 27% to 16,900 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 8, 2026 |
| May 13, 2026 | Sale | Ricky D. Hessling (Chief Commercial Officer) sold 1,000 shares at $250.00 ($250K). Holdings down 13% to 6,525 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 15, 2026 |
| Mar 13, 2026 | Sale | Ricky D. Hessling (Chief Commercial Officer) sold 1,626 shares at $228.18 ($371K). Holdings down 18% to 7,525 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 17, 2026 |
| Mar 11–12, 2026 | Sale | Ricky D. Hessling (Chief Commercial Officer) sold 2,847 shares between Mar 11 and Mar 12 at about $226.34 ($644K). Holdings down 24% to 9,151 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 13, 2026 |
| Feb 12, 2026 | Sale | Michael A Henschen II (Ex VP, Refining) sold 5,289 shares at $202.32 ($1.1M). Holdings down 24% to 16,974 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 13, 2026 |
30 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
| Filed | Items | Tag | Source |
|---|---|---|---|
| Nov 3, 2026, 8:07 AM ET 8-K | Earnings released (Item 2.02) | SEC filing | |
| Oct 29, 2026, 4:59 PM ET 8-K | Executive or director change (Item 5.02) Other event (Item 8.01) | SEC filing |
Red flags are objective triggers only: the item or form filed, never an opinion.
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