Marathon Petroleum Corp (MPC) insider trading.
In Q3 2026, insiders at Marathon Petroleum Corp reported 12 non-derivative transactions on 6 Forms 3, 4 and 5: 0 open-market purchases and 8 sales worth $9.8M.
- Transactions
- 12
- Purchases (P)
- 0
- Sales (S)
- 8
- Net shares, P minus S
- -27,702
- Insiders
- 5
- Last filed
- 2026-09-01
Insiders
| Insider | Relationship | Transactions | Buys | Sales |
|---|---|---|---|---|
| Benson Molly R | Officer · Chief Legal Ofc & Corp Sec | 6 | 0 | 3 |
| Lyon Shawn M | Officer · SVP Log & Storage, MPLX GP LLC | 3 | 0 | 3 |
| Brzezinski Erin M | Officer · VP and Controller | 1 | 0 | 1 |
| Henschen Michael A II | Officer · Ex VP, Refining | 1 | 0 | 1 |
| Mannen Maryann T. | Director, Officer · Chairman, President & CEO | 1 | 0 | 0 |
Transactions
| Date | Insider | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-08-31 | Lyon Shawn M | S (D) | 1,000 | $375.75 | 11,194 | Form 4 |
| 2026-08-28 | Lyon Shawn M | S (D) | 425 | $368.51 | 12,194 | Form 4 |
| 2026-08-27 | Brzezinski Erin M | S (D) | 570 | $362.79 | 1,576 | Form 4 |
| 2026-08-17 | Benson Molly R | S (D) | 5,000 | $358.57 | 30,334 | Form 4 |
| 2026-08-17 | Benson Molly R | M (A) | 5,000 | $47.73 | 35,334 | Form 4 |
| 2026-08-17 | Benson Molly R | S (D) | 5,000 | $358.57 | 30,334 | Form 4 |
| 2026-08-17 | Benson Molly R | M (A) | 5,000 | $47.73 | 35,334 | Form 4 |
| 2026-08-17 | Benson Molly R | S (D) | 7,196 | $358.57 | 30,334 | Form 4 |
| 2026-08-17 | Benson Molly R | M (A) | 7,196 | $47.73 | 37,530 | Form 4 |
| 2026-08-13 | Lyon Shawn M | S (D) | 2,500 | $350 | 12,619 | Form 4 |
| 2026-08-12 | Henschen Michael A II | S (D) | 6,011 | $341.56 | 10,889 | Form 4 |
| 2026-08-03 | Mannen Maryann T. | F (D) | 908 | $311.78 | 110,939 | Form 4 |
Transaction codes in this quarter
Get MPC insider transactions through the API
curl "https://sec-api.dev/api/v1/insider-transactions?period=2026q3&cik=1510295&limit=100" \
-H "Authorization: Bearer $SEC_API_KEY"Insider trading API guide · MPC company page · Marathon Petroleum Corp on SEC.gov
Questions
Are insiders buying or selling Marathon Petroleum Corp (MPC)?
In Q3 2026, insiders at Marathon Petroleum Corp reported 12 non-derivative transactions on 6 Forms 3, 4 and 5: 0 open-market purchases and 8 sales worth $9.8M. Grants, tax withholding and option exercises are counted as transactions but are not purchases or sales.
Where do these Marathon Petroleum Corp insider trades come from?
From the SEC Insider Transactions Data Sets for Q3 2026, which republish the Forms 3, 4 and 5 filed on EDGAR. Each row links to its filing on SEC.gov.
Plain-text version for agents and LLMs: /insider-trading/mpc.md
Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.