D. Mark DeWalch, Director at Black Stone Minerals, L.P. (BSM), bought 37,650 shares at $13.21 ($497K) on 2026-05-28, disclosed to the SEC on 2026-05-28.
Open-market purchase of $497k BSM by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history). Context: insider career grade D.
Nothing distinguishes this filing.
| Filing → |
| BSM | BUY | 2024-02-27 | $101K | — | Filing → |
| BSM | BUY | 2023-11-17 | $1.5M | — | Filing → |
| BSM | BUY | 2023-03-07 | $1.0M | — | Filing → |