Gary R. Heminger is CEO & Chairman at Marathon Petroleum Corp (MPC). They have made 13 open-market trades across 3 companies since 2012, most recently 2026-04-21.
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
8 open-market purchases totalling $6.3M since 2012, against 5 sales. Across 8 scored buys the stock is down 2.3% at ninety days, and 6.6 points behind the S&P over the same stretch.
8 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 50% | 100% | 63% |
| Avg Move | -7.4% | +3.9% | -2.3% |
| Alpha | -5.9% | +1.7% | -6.6% |
| Scored | 8 | 8 | 8 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| FITB | BUY | 2023-03-13 | 2023-03-14 | $26.82 | $1.3M | +2.0% | +6.4% | +3.8% |
| MPLX | BUY | 2019-08-08 | 2019-08-09 | $27.44 | $173K | +2.0% | +4.8% | -9.3% |
| MPLX | BUY | 2019-08-07 | 2019-08-09 | $27.17 | $1.1M | +2.0% | +4.8% | -9.3% |
| MPLX | BUY | 2019-08-07 | 2019-08-09 | $27.09 | $813K | +2.0% | +4.8% | -9.3% |
| MPC | SELL | 2019-02-22 | 2019-02-26 | $65.00 | $12.2M | -11.1% | -5.7% | -24.2% |
| MPC | SELL | 2019-02-22 | 2019-02-26 | $65.00 | $12.2M | -11.1% | -5.7% | -24.2% |
| MPC | SELL | 2018-02-26 | 2018-02-28 | $66.47 | $7.3M | +7.8% | +11.7% | +20.8% |
| MPLX | BUY | 2017-06-12 | 2017-06-14 | $33.26 | $150K | -0.9% | +8.1% | +3.8% |
| MPLX | BUY | 2015-08-26 | 2015-08-28 | $48.72 | $850K | -22.1% | +0.8% | +0.8% |
| MPC | SELL | 2015-05-20 | 2015-05-21 | $104.30 | $3.8M | -18.2% | -0.9% | -0.9% |
| MPLX | BUY | 2014-12-11 | 2014-12-15 | $61.41 | $571K | -22.1% | +0.8% | +0.8% |
| MPC | SELL | 2014-02-25 | 2014-02-27 | $90.40 | $1.5M | -18.2% | -0.9% | -0.9% |
| MPLX | BUY | 2012-10-31 | 2012-11-02 | $22.00 | $1.3M | -22.1% | +0.8% | +0.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.