Black Stone Minerals's top three insider shareholders as of September 29, 2026 are Thomas L Jr Carter (Executive Chairman, 3.68Mn shares), Alexander D. Stuart (Director, 2.04Mn shares), Luke Stevens Putman (Svp, General Counsel, And Sec, 702.64K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Thomas L Jr Carter | Executive Chairman | 3,682,724 | 0 | 3,682,724 | 37.4% | 14 May, 2026 |
| 2 | Alexander D. Stuart | Director | 2,040,075 | 0 | 2,040,075 | 20.7% | 19 Aug, 2026 |
| 3 | Luke Stevens Putman | Svp, General Counsel, And Sec | 702,645 | 0 | 702,645 | 7.1% | 06 May, 2026 |
| 4 | James Whitehead | Director | 0 | 646,058 | 646,058 | 6.6% | 10 Aug, 2026 |
| 5 | Jeffrey P. Wood | President, Cfo | 589,109 | 0 | 589,109 | 6.0% | 24 Feb, 2023 |
| 6 | D Mark Dewalch | Director | 432,837 | 0 | 432,837 | 4.4% | 02 Jul, 2026 |
| 7 | William N. Mathis | Director | 246,200 | 0 | 246,200 | 2.5% | 07 Oct, 2025 |
| 8 | Michael C Linn | Director | 208,150 | 0 | 208,150 | 2.1% | 15 Jan, 2026 |
| 9 | William E. Randall | Director | 193,384 | 0 | 193,384 | 2.0% | 02 Jul, 2026 |
| 10 | Carrie Pearson Clark | Svp, Chief Commercial Officer | 165,857 | 0 | 165,857 | 1.7% | 30 May, 2025 |
| 11 | Carin Marcy Barth | Director | 142,447 | 0 | 142,447 | 1.4% | 15 Jan, 2026 |
| 12 | Taylor Dewalch | Co Ceo And President | 141,369 | 0 | 141,369 | 1.4% | 26 Feb, 2026 |
| 13 | Ashley J Longmaid | Director | 137,335 | 0 | 137,335 | 1.4% | 13 May, 2026 |
| 14 | Dawn Smajstrla | Vp, Chief Accounting Officer | 128,456 | 0 | 128,456 | 1.3% | 22 Feb, 2024 |
| 15 | Fowler Carter | Co Ceo And President | 125,379 | 0 | 125,379 | 1.3% | 26 Feb, 2026 |
| 16 | Allison K. Thacker | Director | 122,656 | 0 | 122,656 | 1.2% | 13 Jan, 2023 |
| 17 | Evan Montgomery Kiefer | Svp, Cfo Treasurer | 65,383 | 0 | 65,383 | 0.7% | 22 Feb, 2024 |
| 18 | Chris Bonner | Svp, Cfo, And Treasurer | 50,678 | 0 | 50,678 | 0.5% | 26 Feb, 2026 |
| 19 | Anne Lenoir Hamman | Director | 8,428 | 0 | 8,428 | 0.1% | 02 Jul, 2026 |
| 20 | Jerry V. Jr. Kyle | Director | 0 | 7,665 | 7,665 | 0.1% | 04 Aug, 2026 |
| 21 | Erin Leah Phillips | Controller (Pao) | 3,911 | 0 | 3,911 | 0.0% | 06 Feb, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 18 Aug, 2026 | Alexander D. Stuart | Director | Disposed G | 15,900 | $0.00 | $0 | 2,040,075 | Direct |
| 06 Aug, 2026 | James Whitehead | Director | Disposed S | 498,343 | $13.21 | $6.58Mn | 0 | Indirect |
| 06 Aug, 2026 | James Whitehead | Director | Disposed S | 1,628,762 | $13.21 | $21.52Mn | 646,058 | Indirect |
| 31 Jul, 2026 | Jerry V. Jr. Kyle | Director | Acquired J | 7,665 | — | — | 7,665 | Indirect |
| 02 Jul, 2026 | William E. Randall | Director | Acquired A | 1,610 | $13.97 | $22.49K | 193,384 | Direct |
| 02 Jul, 2026 | Anne Lenoir Hamman | Director | Acquired A | 1,342 | $13.97 | $18.75K | 8,428 | Direct |
| 02 Jul, 2026 | Jerry V. Jr. Kyle | Director | Acquired A | 1,342 | $13.97 | $18.75K | 322,489 | Direct |
| 02 Jul, 2026 | D Mark Dewalch | Director | Acquired A | 1,342 | $13.97 | $18.75K | 432,837 | Direct |
| 02 Jul, 2026 | Alexander D. Stuart | Director | Acquired A | 1,700 | $13.97 | $23.75K | 2,055,975 | Direct |
| 29 May, 2026 | D Mark Dewalch | Director | Acquired P | 36,363 | $13.48 | $490.03K | 594,885 | Indirect |
| 01 Jun, 2026 | D Mark Dewalch | Director | Acquired P | 36,363 | $13.62 | $495.33K | 631,248 | Indirect |
| 28 May, 2026 | D Mark Dewalch | Director | Acquired P | 37,650 | $13.21 | $497.34K | 431,495 | Direct |
| 13 May, 2026 | Thomas L Jr Carter | Executive Chairman | Acquired P | 1,120 | $13.50 | $15.12K | 3,682,724 | Direct |
| 12 May, 2026 | Ashley J Longmaid | Director | Disposed S | 11,128 | $13.45 | $149.70K | 137,335 | Direct |
| 08 May, 2026 | Thomas L Jr Carter | Executive Chairman | Acquired P | 23,604 | $13.32 | $314.37K | 3,637,450 | Direct |
| 11 May, 2026 | Thomas L Jr Carter | Executive Chairman | Acquired P | 25,000 | $13.47 | $336.86K | 3,662,450 | Direct |
| 12 May, 2026 | Thomas L Jr Carter | Executive Chairman | Acquired P | 19,154 | $13.48 | $258.11K | 3,681,604 | Direct |
| 05 May, 2026 | Luke Stevens Putman | Svp, General Counsel, And Sec | Disposed S | 29,386 | $13.75 | $404.00K | 702,645 | Direct |
| 06 Apr, 2026 | Luke Stevens Putman | Svp, General Counsel, And Sec | Disposed S | 29,386 | $14.45 | $424.68K | 732,031 | Direct |
| 05 Mar, 2026 | Luke Stevens Putman | Svp, General Counsel, And Sec | Disposed S | 30,276 | $15.25 | $461.58K | 761,417 | Direct |