William J. McAdam is Director at SemGroup Corp (SEMG). They have made 4 open-market trades across 1 company since 2017, most recently 2019-12-05.
CIK 0001701547
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.
4 open-market purchases totalling $1.4M since 2017, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| SEMG | 19,300 | $550K |
Shares reported on the most recent Form 4, priced at the 2019-06-04 close.
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.