Marathon Petroleum (MPC)Officer sold ~$376K

~$376K

Approx. value · 1,000 sh @ $375.75

11K

Holds after · shares reported

Traded

Aug 31, 2026

Filed

Sep 1, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Jul 10, 2026CongressDisclosed partial sale of MPC — reported range $1,001 - $15,000
2. Jul 24, 2026Congress · 1 personMembers of Congress: 2 sales
3. Aug 4, 2026Company filing · Form 8-K · ResultsReported its results
4. Aug 12, 2026InsiderOfficer sold ~$2.05M of MPC shares in the open market
5. Aug 13, 2026InsiderOfficer sold ~$875K of MPC shares in the open market
6. Aug 17, 2026Insider · 1 personInsiders: 3 sales (~$6.2M)
7. Aug 27, 2026InsiderOfficer sold ~$207K of MPC shares in the open market
8. Aug 28, 2026InsiderOfficer sold ~$157K of MPC shares in the open market
9. Aug 31, 2026 · this disclosureInsiderOfficer sold ~$376K of MPC shares in the open market

What came next

1. Sep 22, 2026Congress · 1 personMembers of Congress: 2 sales

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for Marathon Petroleum

For Marathon Petroleum, OQRO holds 8 insider filings (SEC Form 4 or Form 144), 5 Congress trade reports and 17 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its MPC page.

Other recent filings by Shawn M Lyon, SVP Log & Storage, MPLX GP LLC

• SEC Form 4 at Marathon Petroleum (MPC)Sep 1, 2026
• SEC Form 4 at Marathon Petroleum (MPC)Aug 17, 2026
• SEC Form 4 at Mplx Lp (MPLX)Mar 11, 2025

The full history of Shawn M Lyon, SVP Log & Storage, MPLX GP LLC is on the profile page.

How this filing works

• SEC Form 4
• Open-market purchase
• Rule 10b5-1 trading plans

Other disclosures at Marathon Petroleum

• House Clerk periodic transaction reportOct 1, 2026
• House Clerk periodic transaction reportOct 1, 2026
• SEC Form 4Sep 1, 2026
• SEC Form 4Aug 31, 2026
• SEC Form 4Aug 19, 2026
• SEC Form 4Aug 19, 2026

Everything OQRO holds on this company is on its MPC page.