MPC Marathon Petroleum Corporation
Marathon Petroleum Corporation (MPC) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
How much of that selling was preplanned? 63% planned / 37% discretionary
Largest single sale: $2.6M.
Where they traded
No open-market insider purchase on record.
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | Sell | 1,000 | $375.75 | $375.8K | 11,194 −8.2% of holding | |
| Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | Sell | 425 | $368.51 | $156.6K | 12,194 −3.4% of holding | |
| Brzezinski Erin M | VP and Controller | Sell | 570 | $362.79 | $206.8K | 1,576 −26.6% of holding | |
| Benson Molly R 3 fills | Chief Legal Ofc & Corp Sec | Sell 10b5-1 | 17,196 | $358.57 | $6.2M | 30,334 −36.2% of holding | |
| Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | Sell | 2,500 | $350.00 | $875.0K | 12,619 −16.5% of holding | |
| Henschen Michael A II | Ex VP, Refining | Sell | 6,011 | $341.56 | $2.1M | 10,889 −35.6% of holding |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.