Black Stone Minerals, L.P. (BSM) · Insider trading
What Black Stone Minerals's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$2.41M
2 insiders, 7 trades
Sold, 12 months
$29.54M
3 insiders, 4% under a plan
Net, 12 months
−$27.13M
bought less sold
Latest filing
2026-10-05
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Whitehead JamesDirector | – | $28.10M | 2 | 2026-08-06 | – |
| Carter Thomas L JrDirector, Executive Chairman | $3.10M | – | 16 | 2026-05-13 | 3,682,724 |
| DeWalch D MarkDirector | $1.48M | – | 3 | 2026-06-01 | – |
| Putman Luke StevensSVP, General Counsel, and Sec | – | $1.29M | 3 | 2026-05-05 | 702,645 |
| Clark Carrie PearsonSVP, Chief Commercial Officer | – | $500,364 | 1 | 2025-05-29 | 165,857 |
| Longmaid Ashley JDirector | – | $149,672 | 1 | 2026-05-12 | 137,335 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-08-06 | Whitehead JamesDirector | Saleindirect | 498,343 | 13.21 | $6.58M | 0 | Form 4 |
| 2026-08-06 | Whitehead JamesDirector | Saleindirect | 1,628,762 | 13.21 | $21.52M | 646,058 | Form 4 |
| 2026-06-01 | DeWalch D MarkDirector | Buyindirect | 36,363 | 13.62 | $495,264 | 631,248 | Form 4 |
| 2026-05-29 | DeWalch D MarkDirector | Buyindirect | 36,363 | 13.48 | $490,173 | 594,885 | Form 4 |
| 2026-05-28 | DeWalch D MarkDirector | Buy | 37,650 | 13.21 | $497,357 | 431,495 | Form 4 |
| 2026-05-13 | Carter Thomas L JrDirector, Executive Chairman | Buy | 1,120 | 13.50 | $15,120 | 3,682,724 | Form 4 |
| 2026-05-12 | Longmaid Ashley JDirector | Sale | 11,128 | 13.45 | $149,672 | 137,335 | Form 4 |
| 2026-05-12 | Carter Thomas L JrDirector, Executive Chairman | Buy | 19,154 | 13.48 | $258,196 | 3,681,604 | Form 4 |
| 2026-05-11 | Carter Thomas L JrDirector, Executive Chairman | Buy | 25,000 | 13.47 | $336,750 | 3,662,450 | Form 4 |
| 2026-05-08 | Carter Thomas L JrDirector, Executive Chairman | Buy | 23,604 | 13.32 | $314,405 | 3,637,450 | Form 4 |
| 2026-05-05 | Putman Luke StevensSVP, General Counsel, and Sec | Saleplan | 29,386 | 13.75 | $404,058 | 702,645 | Form 4 |
| 2026-04-06 | Putman Luke StevensSVP, General Counsel, and Sec | Saleplan | 29,386 | 14.45 | $424,628 | 732,031 | Form 4/A |
| 2026-03-05 | Putman Luke StevensSVP, General Counsel, and Sec | Saleplan | 30,276 | 15.25 | $461,709 | 761,417 | Form 4/A |
| 2025-09-12 | Carter Thomas L JrDirector, CEO, President, and Chairman | Buy | 14,000 | 12.59 | $176,260 | 3,512,701 | Form 4 |
| 2025-09-11 | Carter Thomas L JrDirector, CEO, President, and Chairman | Buy | 1,300 | 12.39 | $16,107 | 3,498,701 | Form 4 |
| 2025-09-10 | Carter Thomas L JrDirector, CEO, President, and Chairman | Buy | 10,536 | 12.32 | $129,804 | 3,497,401 | Form 4 |
| 2025-09-09 | Carter Thomas L JrDirector, CEO, President, and Chairman | Buy | 1,307 | 12.07 | $15,775 | 3,486,865 | Form 4 |
| 2025-09-08 | Carter Thomas L JrDirector, CEO, President, and Chairman | Buy | 13,527 | 11.90 | $160,971 | 3,485,558 | Form 4 |
| 2025-08-20 | Carter Thomas L JrDirector, CEO, President, and Chairman | Buy | 21,000 | 12.03 | $252,630 | 3,472,031 | Form 4 |
| 2025-08-19 | Carter Thomas L JrDirector, CEO, President, and Chairman | Buy | 20,000 | 11.97 | $239,400 | 3,451,031 | Form 4 |
| 2025-08-12 | Carter Thomas L JrDirector, CEO, President, and Chairman | Buy | 9,200 | 12.36 | $113,712 | 3,431,031 | Form 4 |
| 2025-08-11 | Carter Thomas L JrDirector, CEO, President, and Chairman | Buy | 25,000 | 12.10 | $302,500 | 3,421,831 | Form 4 |
| 2025-08-08 | Carter Thomas L JrDirector, CEO, President, and Chairman | Buy | 27,500 | 12.20 | $335,500 | 3,396,831 | Form 4 |
| 2025-08-07 | Carter Thomas L JrDirector, CEO, President, and Chairman | Buy | 19,710 | 12.24 | $241,250 | 3,369,331 | Form 4 |
| 2025-05-29 | Clark Carrie PearsonSVP, Chief Commercial Officer | Sale | 36,900 | 13.56 | $500,364 | 165,857 | Form 4 |
| 2025-05-21 | Carter Thomas L JrDirector, CEO, President, and Chairman | Buy | 14,500 | 13.52 | $196,040 | 3,349,621 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
78 × grant or award21 × shares withheld for tax4 × other2 × gift
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-10-02 | Kyle Jerry V. Jr.Director | Grant or award A | +1,309 | 14.32 | 323,798 | Form 4 |
| 2026-10-02 | DeWalch D MarkDirector | Grant or award A | +1,309 | 14.32 | 434,146 | Form 4 |
| 2026-10-02 | Stuart Alexander D.Director | Grant or award A | +1,658 | 14.32 | 2,041,733 | Form 4 |
| 2026-10-02 | Randall William E.Director | Grant or award A | +1,571 | 14.32 | 194,955 | Form 4 |
| 2026-10-02 | Hamman Anne LenoirDirector | Grant or award A | +1,309 | 14.32 | 9,737 | Form 4 |
| 2026-08-18 | Stuart Alexander D.Director | Gift G | −15,900 | – | 2,040,075 | Form 4 |
| 2026-07-31 | Kyle Jerry V. Jr.Director | Other J | +7,665 | – | 7,665 | Form 4 |
| 2026-07-02 | Kyle Jerry V. Jr.Director | Grant or award A | +1,342 | 13.97 | 322,489 | Form 4 |
| 2026-07-02 | DeWalch D MarkDirector | Grant or award A | +1,342 | 13.97 | 432,837 | Form 4 |
| 2026-07-02 | Stuart Alexander D.Director | Grant or award A | +1,700 | 13.97 | 2,055,975 | Form 4 |
| 2026-07-02 | Randall William E.Director | Grant or award A | +1,610 | 13.97 | 193,384 | Form 4 |
| 2026-07-02 | Hamman Anne LenoirDirector | Grant or award A | +1,342 | 13.97 | 8,428 | Form 4 |
| 2026-04-02 | Kyle Jerry V. Jr.Director | Grant or award A | +1,240 | 15.12 | 321,147 | Form 4 |
| 2026-04-02 | DeWalch D MarkDirector | Grant or award A | +1,240 | 15.12 | 393,845 | Form 4 |
| 2026-04-02 | Stuart Alexander D.Director | Grant or award A | +1,570 | 15.12 | 2,054,275 | Form 4 |
| 2026-04-02 | Randall William E.Director | Grant or award A | +1,488 | 15.12 | 191,774 | Form 4 |
| 2026-04-02 | Hamman Anne LenoirDirector | Grant or award A | +473 | 15.12 | 7,086 | Form 4 |
| 2026-03-11 | Hamman Anne LenoirDirector | Grant or award A | +6,613 | – | 6,613 | Form 4 |
| 2026-02-24 | Carter Thomas L JrDirector, Executive Chairman | Grant or award A | +136,315 | – | 3,667,487 | Form 4 |
| 2026-02-24 | Carter Thomas L JrDirector, Executive Chairman | Shares withheld for tax F | −53,641 | 15.23 | 3,613,846 | Form 4 |
| 2026-02-24 | Putman Luke StevensSVP, General Counsel, and Sec | Grant or award A | +68,853 | – | 816,995 | Form 4 |
| 2026-02-24 | Putman Luke StevensSVP, General Counsel, and Sec | Shares withheld for tax F | −25,302 | 15.23 | 791,693 | Form 4 |
| 2026-02-24 | DeWalch TaylorDirector, Co-CEO and President | Grant or award A | +1,958 | – | 141,847 | Form 4 |
| 2026-02-24 | DeWalch TaylorDirector, Co-CEO and President | Shares withheld for tax F | −478 | 15.23 | 141,369 | Form 4 |
| 2026-02-24 | Bonner ChrisSVP, CFO, and Treasurer | Grant or award A | +1,447 | – | 51,108 | Form 4 |
| 2026-02-24 | Bonner ChrisSVP, CFO, and Treasurer | Shares withheld for tax F | −430 | 15.23 | 50,678 | Form 4 |
| 2026-02-24 | Carter FowlerDirector, Co-CEO and President | Grant or award A | +1,330 | – | 125,704 | Form 4 |
| 2026-02-24 | Carter FowlerDirector, Co-CEO and President | Shares withheld for tax F | −325 | 15.23 | 125,379 | Form 4 |
| 2026-02-04 | Carter Thomas L JrDirector, Executive Chairman | Grant or award A | +53,404 | – | 3,531,172 | Form 4 |
| 2026-02-04 | Putman Luke StevensSVP, General Counsel, and Sec | Grant or award A | +65,420 | – | 748,142 | Form 4 |
| 2026-02-04 | DeWalch TaylorDirector, Co-CEO and President | Grant or award A | +80,106 | – | 139,889 | Form 4 |
| 2026-02-04 | Bonner ChrisSVP, CFO, and Treasurer | Grant or award A | +42,723 | – | 49,661 | Form 4 |
| 2026-02-04 | Carter FowlerDirector, Co-CEO and President | Grant or award A | +80,106 | – | 124,374 | Form 4 |
| 2026-02-04 | Phillips Erin LeahController (PAO) | Grant or award A | +2,002 | – | 3,911 | Form 4 |
| 2026-01-13 | Barth Carin MarcyDirector | Grant or award A | +14,255 | – | 142,447 | Form 4 |
| 2026-01-13 | Linn Michael CDirector | Grant or award A | +14,255 | – | 208,150 | Form 4 |
| 2026-01-13 | Kyle Jerry V. Jr.Director | Grant or award A | +14,255 | – | 319,907 | Form 4 |
| 2026-01-13 | DeWalch D MarkDirector | Grant or award A | +14,255 | – | 392,605 | Form 4 |
| 2026-01-13 | Stuart Alexander D.Director | Grant or award A | +14,255 | – | 2,052,705 | Form 4 |
| 2026-01-13 | Randall William E.Director | Grant or award A | +14,255 | – | 190,286 | Form 4 |
| 2026-01-13 | Whitehead JamesDirector | Grant or award A | +14,255 | – | 51,865 | Form 4 |
| 2026-01-13 | Longmaid Ashley JDirector | Grant or award A | +14,255 | – | 148,463 | Form 4 |
| 2026-01-07 | Phillips Erin LeahController (PAO) | Shares withheld for tax F | −211 | 13.38 | 1,909 | Form 4 |
| 2026-01-07 | Carter Thomas L JrDirector, Executive Chairman | Shares withheld for tax F | −34,933 | 13.38 | 3,477,768 | Form 4 |
| 2026-01-07 | Putman Luke StevensSVP, General Counsel, and Sec | Shares withheld for tax F | −14,920 | 13.38 | 682,722 | Form 4 |
| 2026-01-07 | DeWalch TaylorDirector, Co-CEO and President | Shares withheld for tax F | −5,458 | 13.38 | 59,783 | Form 4 |
| 2026-01-07 | Bonner ChrisSVP, CFO, and Treasurer | Shares withheld for tax F | −642 | 13.38 | 6,938 | Form 4 |
| 2026-01-07 | Carter FowlerDirector, Co-CEO and President | Shares withheld for tax F | −2,511 | 13.38 | 44,268 | Form 4 |
| 2026-01-02 | Kyle Jerry V. Jr.Director | Grant or award A | +1,410 | 13.29 | 305,652 | Form 4 |
| 2026-01-02 | DeWalch D MarkDirector | Grant or award A | +1,410 | 13.29 | 378,350 | Form 4 |
| 2026-01-02 | Stuart Alexander D.Director | Grant or award A | +1,693 | 13.29 | 2,038,450 | Form 4 |
| 2026-01-02 | Randall William E.Director | Grant or award A | +1,537 | 13.29 | 176,031 | Form 4 |
| 2025-10-03 | Kyle Jerry V. Jr.Director | Grant or award A | +1,426 | 13.14 | 304,242 | Form 4 |
| 2025-10-03 | DeWalch D MarkDirector | Grant or award A | +1,426 | 13.14 | 376,940 | Form 4 |
| 2025-10-03 | Stuart Alexander D.Director | Grant or award A | +1,712 | 13.14 | 2,036,757 | Form 4 |
| 2025-10-03 | Mathis William N.Director | Grant or award A | +2,378 | 13.14 | 246,200 | Form 4 |
| 2025-10-03 | Randall William E.Director | Grant or award A | +1,426 | 13.14 | 174,494 | Form 4 |
| 2025-08-15 | Stuart Alexander D.Director | Gift G | −20,200 | – | 2,035,045 | Form 4 |
| 2025-07-03 | Mathis William N.Director | Grant or award A | +1,624 | 13.08 | 243,822 | Form 4 |
| 2025-07-03 | DeWalch D MarkDirector | Grant or award A | +1,433 | 13.08 | 375,514 | Form 4 |
| 2025-07-03 | Stuart Alexander D.Director | Grant or award A | +1,720 | 13.08 | 2,055,245 | Form 4 |
| 2025-07-03 | Kyle Jerry V. Jr.Director | Grant or award A | +1,433 | 13.08 | 302,816 | Form 4 |
| 2025-07-03 | Randall William E.Director | Grant or award A | +1,433 | 13.08 | 173,068 | Form 4 |
| 2025-06-20 | Mathis William N.Director | Other J | +54,690 | – | 324,763 | Form 4 |
| 2025-06-20 | Mathis William N.Director | Other J | +54,690 | – | 54,690 | Form 4 |
| 2025-06-20 | Mathis William N.Director | Other J | +12,153 | – | 12,153 | Form 4 |
| 2025-04-04 | Randall William E.Director | Grant or award A | +1,227 | 15.27 | 171,635 | Form 4 |
| 2025-04-04 | Mathis William N.Director | Grant or award A | +1,391 | 15.27 | 242,198 | Form 4 |
| 2025-04-04 | Stuart Alexander D.Director | Grant or award A | +1,473 | 15.27 | 2,053,525 | Form 4 |
| 2025-04-04 | Kyle Jerry V. Jr.Director | Grant or award A | +1,227 | 15.27 | 301,383 | Form 4 |
| 2025-04-04 | DeWalch D MarkDirector | Grant or award A | +1,227 | 15.27 | 374,081 | Form 4 |
| 2025-02-25 | Bonner ChrisVP and CAO | Grant or award A | +1,962 | – | 8,163 | Form 4 |
| 2025-02-25 | Bonner ChrisVP and CAO | Shares withheld for tax F | −583 | 15.11 | 7,580 | Form 4 |
| 2025-02-25 | Putman Luke StevensSVP, General Counsel, and Sec | Grant or award A | +96,008 | – | 734,709 | Form 4 |
| 2025-02-25 | Putman Luke StevensSVP, General Counsel, and Sec | Shares withheld for tax F | −37,067 | 15.11 | 697,642 | Form 4 |
| 2025-02-25 | Carter Thomas L JrDirector, CEO, President, and Chairman | Grant or award A | +190,073 | – | 3,409,916 | Form 4 |
| 2025-02-25 | Carter Thomas L JrDirector, CEO, President, and Chairman | Shares withheld for tax F | −74,795 | 15.11 | 3,335,121 | Form 4 |
| 2025-02-25 | Carter FowlerSVP, Corporate Development | Grant or award A | +1,856 | – | 47,331 | Form 4 |
| 2025-02-25 | Carter FowlerSVP, Corporate Development | Shares withheld for tax F | −552 | 15.11 | 46,779 | Form 4 |
| 2025-02-25 | Clark Carrie PearsonSVP, Chief Commercial Officer | Grant or award A | +47,439 | – | 217,352 | Form 4 |
| 2025-02-25 | Clark Carrie PearsonSVP, Chief Commercial Officer | Shares withheld for tax F | −14,595 | 15.11 | 202,757 | Form 4 |
| 2025-02-14 | DeWalch TaylorSVP and CFO | Grant or award A | +51,599 | – | 65,241 | Form 4 |
| 2025-02-14 | Bonner ChrisVP and CAO | Grant or award A | +4,130 | – | 6,201 | Form 4 |
| 2025-02-14 | Clark Carrie PearsonSVP, Chief Commercial Officer | Grant or award A | +62,884 | – | 169,913 | Form 4 |
| 2025-02-14 | Putman Luke StevensSVP, General Counsel, and Sec | Grant or award A | +62,884 | – | 638,701 | Form 4 |
| 2025-02-14 | Carter Thomas L JrDirector, CEO, President, and Chairman | Grant or award A | +124,496 | – | 3,219,843 | Form 4 |
| 2025-01-13 | DeWalch D MarkDirector | Grant or award A | +13,324 | – | 372,854 | Form 4 |
| 2025-01-13 | Linn Michael CDirector | Grant or award A | +13,324 | – | 193,895 | Form 4 |
| 2025-01-13 | Randall William E.Director | Grant or award A | +13,324 | – | 170,408 | Form 4 |
| 2025-01-13 | Whitehead JamesDirector | Grant or award A | +13,324 | – | 37,610 | Form 4 |
| 2025-01-13 | Barth Carin MarcyDirector | Grant or award A | +13,324 | – | 128,192 | Form 4 |
| 2025-01-13 | Stuart Alexander D.Director | Grant or award A | +13,324 | – | 2,052,052 | Form 4 |
| 2025-01-13 | Longmaid Ashley JDirector | Grant or award A | +10,266 | – | 134,208 | Form 4 |
| 2025-01-13 | Kyle Jerry V. Jr.Director | Grant or award A | +13,324 | – | 300,156 | Form 4 |
| 2025-01-13 | Mathis William N.Director | Grant or award A | +13,324 | – | 240,807 | Form 4 |
| 2025-01-07 | Bonner ChrisController | Shares withheld for tax F | −377 | 14.49 | 2,071 | Form 4 |
| 2025-01-07 | Putman Luke StevensSVP, General Counsel, and Sec | Shares withheld for tax F | −15,479 | 14.49 | 575,817 | Form 4 |
| 2025-01-07 | Clark Carrie PearsonSVP, Chief Commercial Officer | Shares withheld for tax F | −9,894 | 14.49 | 107,029 | Form 4 |
| 2025-01-07 | DeWalch TaylorSVP and CFO | Shares withheld for tax F | −668 | 14.49 | 13,642 | Form 4 |
| 2025-01-07 | Carter Thomas L JrDirector, CEO, President, and Chairman | Shares withheld for tax F | −37,781 | 14.49 | 3,095,347 | Form 4 |
| 2025-01-03 | Kyle Jerry V. Jr.Director | Grant or award A | +1,284 | 14.60 | 286,832 | Form 4 |
| 2025-01-03 | Stuart Alexander D.Director | Grant or award A | +1,541 | 14.60 | 2,038,728 | Form 4 |
| 2025-01-03 | Mathis William N.Director | Grant or award A | +1,455 | 14.60 | 227,483 | Form 4 |
| 2025-01-03 | Randall William E.Director | Grant or award A | +1,284 | 14.60 | 157,084 | Form 4 |
| 2025-01-03 | DeWalch D MarkDirector | Grant or award A | +1,284 | 14.60 | 359,530 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.