BSM Insider Trading Activity and SEC Form 4 Filings
BSM insider trading summary
Over the past 12 months, insiders at Black Stone Minerals, L.P. (BSM) reported 8 sales worth $30.4M by 3 insiders and 7 open-market purchases worth $2.4M by 2 insiders on SEC Form 4. Net insider selling was $28.0M.
Latest BSM insider buys and sells
| Date | Insider | Role | Type | Value |
|---|---|---|---|---|
| Aug 6, 2026 | James Whitehead | Director | Sell | $21.5M (1,628,762 @ $13.21) |
| Aug 6, 2026 | James Whitehead | Director | Sell | $6.6M (498,343 @ $13.21) |
| Jun 1, 2026 | D Mark DeWalch | Director | Buy | $495K (36,363 @ $13.62) |
| May 29, 2026 | D Mark DeWalch | Director | Buy | $490K (36,363 @ $13.48) |
| May 28, 2026 | D Mark DeWalch | Director | Buy | $497K (37,650 @ $13.21) |
| May 13, 2026 | Thomas L Carter Jr | Executive Chairman | Buy | $15K (1,120 @ $13.50) |
| May 12, 2026 | Ashley J Longmaid | Director | Sell | $150K (11,128 @ $13.45) |
| May 12, 2026 | Thomas L Carter Jr | Executive Chairman | Buy | $258K (19,154 @ $13.48) |
| May 11, 2026 | Thomas L Carter Jr | Executive Chairman | Buy | $337K (25,000 @ $13.47) |
| May 8, 2026 | Thomas L Carter Jr | Executive Chairman | Buy | $314K (23,604 @ $13.32) |
Source: SEC Form 4 filings. Open-market purchases (code P) and sales (code S) only; option exercises, grants and gifts are excluded.