Insider · CIK 0001638259
D Mark DeWalch
Files at: BSM. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Jul 2, 2026 AForm 4 → | Jul 2, 4:55 pm EDT | Black Stone Minerals, L.P.BSM | 1,342 | $13.97 | $18,748 | 432,837 | — |
Reported trades — derivatives (options, RSUs, warrants)
No reported derivative activity in this period.