Insider trading · Q3 2026 · CIK 1621434

Black Stone Minerals, L.P. (BSM) insider trading.

Name: Black Stone Minerals, L.P. insider transactions, Q3 2026
Creator: U.S. Securities and Exchange Commission

In Q3 2026, insiders at Black Stone Minerals, L.P. reported 9 non-derivative transactions on 8 Forms 3, 4 and 5: 0 open-market purchases and 2 sales worth $28.1M.

Transactions: 9
Purchases (P): 0
Sales (S): 2
Net shares, P minus S: -2,127,105
Insiders: 6
Last filed: 2026-08-19

Insiders

Insider	Relationship	Transactions	Sales
Stuart Alexander D.	Director	2	0
Whitehead James	Director	2	2
Kyle Jerry V. Jr.	Director	2	0
DeWalch D Mark	Director	1	0
Randall William E.	Director	1	0
Hamman Anne Lenoir	Director	1	0

Transactions

9 non-derivative rows, newest transaction first. Shares and prices as filed.
Date	Insider	Code	Shares	Price	Owned after	Filing
2026-08-18	Stuart Alexander D.	G (D)	15,900	$0	2,040,075	Form 4
2026-08-06	Whitehead James	S (D)	498,343	$13.21	0	Form 4
2026-08-06	Whitehead James	S (D)	1,628,762	$13.21	646,058	Form 4
2026-07-31	Kyle Jerry V. Jr.	J (A)	7,665	—	7,665	Form 4
2026-07-02	Kyle Jerry V. Jr.	A (A)	1,342	$13.97	322,489	Form 4
2026-07-02	DeWalch D Mark	A (A)	1,342	$13.97	432,837	Form 4
2026-07-02	Stuart Alexander D.	A (A)	1,700	$13.97	2,055,975	Form 4
2026-07-02	Randall William E.	A (A)	1,610	$13.97	193,384	Form 4
2026-07-02	Hamman Anne Lenoir	A (A)	1,342	$13.97	8,428	Form 4

Transaction codes in this quarter

A: 5 S: 2 G: 1 J: 1

Get BSM insider transactions through the API

Request with your API key

curl "https://sec-api.dev/api/v1/insider-transactions?period=2026q3&cik=1621434&limit=100" \
  -H "Authorization: Bearer $SEC_API_KEY"

Insider trading API guide · BSM company page · Black Stone Minerals, L.P. on SEC.gov

Questions

Are insiders buying or selling Black Stone Minerals, L.P. (BSM)?

In Q3 2026, insiders at Black Stone Minerals, L.P. reported 9 non-derivative transactions on 8 Forms 3, 4 and 5: 0 open-market purchases and 2 sales worth $28.1M. Grants, tax withholding and option exercises are counted as transactions but are not purchases or sales.

Where do these Black Stone Minerals, L.P. insider trades come from?

From the SEC Insider Transactions Data Sets for Q3 2026, which republish the Forms 3, 4 and 5 filed on EDGAR. Each row links to its filing on SEC.gov.

Source: SEC Insider Transactions Data Sets, Q3 2026, retrieved 2026-10-27. Footnotes, derivative holdings and amendments are in the linked filings. Not investment advice.

Plain-text version for agents and LLMs: /insider-trading/bsm.md

Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.