Sylvia J. Kerrigan is See remarks at MARATHON OIL CORP (MRO). They have made 1 open-market trade across 1 company since 2011, most recently 2026-03-01.
CIK 0001474828
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.
0 open-market purchases, against 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MRO | SELL | 2011-05-11 | 2011-05-12 | $51.05 | $581K | -32.0% | +2.1% | +2.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.