Holbrook F. Dorn is VP at Black Stone Minerals, L.P. (BSM). They have made 2 open-market trades across 1 company since 2015, most recently 2020-01-07.
CIK 0001636949
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.
1 open-market purchase totalling $72K since 2015, against 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| BSM | 985,001 | $14.8M |
Shares reported on the most recent Form 4, priced at the 2020-01-09 close.
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.