MPC insider trading — Marathon Petroleum Corp
Over the last 90 days, insiders at Marathon Petroleum Corp (MPC) made 0 open-market purchases worth $0 and 5 open-market sales worth $3.67M, making them net sellers by $3.67M. The largest sale was by Henschen Michael A Ii (Ex VP, Refining), who sold 6,011 shares for $2.05M on Aug 12, 2026.
Updated Oct 16, 2026.
Recent MPC insider transactions
Every Form 4 filed by Marathon Petroleum Corp officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Aug 31, 2026 | Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | S · Sale | Direct | 1,000 | $375.75 | $376K | Form 4 |
| Aug 28, 2026 | Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | S · Sale | Direct | 425 | $368.51 | $157K | Form 4 |
| Aug 27, 2026 | Brzezinski Erin M | VP and Controller | S · Sale | Direct | 570 | $362.79 | $207K | Form 4 |
| Aug 17, 2026 | Benson Molly R | Chief Legal Ofc & Corp Sec | M · Option exercise · 10b5-1 | Direct | 17,196 | $47.73 | $821K | Form 4 |
| Aug 17, 2026 | Benson Molly R | Chief Legal Ofc & Corp Sec | S · Sale · 10b5-1 | Direct | 17,196 | $358.57 | $6.17M | Form 4 |
| Aug 13, 2026 | Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | S · Sale | Direct | 2,500 | $350.00 | $875K | Form 4 |
| Aug 12, 2026 | Henschen Michael A Ii | Ex VP, Refining | S · Sale | Direct | 6,011 | $341.56 | $2.05M | Form 4 |
| Aug 3, 2026 | Mannen Maryann T. | Chairman, President & CEO | F · Tax withholding | Direct | 908 | $311.78 | $283K | Form 4 |
MPC insider trading FAQ
Are insiders buying MPC stock?
Not on the open market. In the last 90 days, Marathon Petroleum Corp insiders made no open-market purchases, and 5 open-market sales totaling $3.67M. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading MPC?
Recent sellers: Brzezinski Erin M, Henschen Michael A Ii, Lyon Shawn M.
Where does MPC insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
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Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.