D. Mark DeWalch - 03 Oct 2025 Form 4 Insider Report for Black Stone Minerals, L.P. (BSM)

Role: Director
Signature: /s/ Steve Putman, attorney-in-fact for D. Mark DeWalch
Issuer symbol: BSM
Transactions as of: 03 Oct 2025
Net transactions value: +$18,738
Form type: 4
Filing time: 07 Oct 2025, 17:05:09 UTC
Previous filing: 03 Jul 2025
Next filing: 06 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
DeWalch D Mark	Director	1001 FANNIN STREET, SUITE 2020, HOUSTON	/s/ Steve Putman, attorney-in-fact for D. Mark DeWalch	07 Oct 2025	0001638259

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BSM	Common units representing limited partner interests	Award	$18,738	+1,426	+0.38%	$13.14	376,940	03 Oct 2025	Direct	F1
holding	BSM	Common units representing limited partner interests						558,522	03 Oct 2025	By DeWalch Diversified LP
holding	BSM	Common units representing limited partner interests						40,809	03 Oct 2025	By Donald Mark DeWalch Trust
holding	BSM	Common units representing limited partner interests						6,749	03 Oct 2025	By wife

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Pursuant to a previous arrangement, the Reporting Person elected to receive common units in lieu of a cash retainer for service on the Board of Directors of the Partnership's General Partner.