Insider Buying and Selling - BSM

Transaction	Filed	Name	Type	Shares @ Price	Value	Balance change		Ownership
05/28/2026	05/28/2026	Dewalch D Mark Director	Buy	37,650 @ $13.21	$497,341.44	431,495	(9.56%)	Direct
05/13/2026	05/14/2026	Carter Thomas L Jr Executive Chairman Officer Director	Buy	1,120 @ $13.50	$15,119.89	3,682,724	(0.03%)	Direct
05/12/2026	05/12/2026	Carter Thomas L Jr Executive Chairman Officer Director	Buy	19,154 @ $13.48	$258,107.81	3,681,604	(0.52%)	Direct
05/12/2026	05/13/2026	Longmaid Ashley J Director	Sell	-11,128 @ $13.45	($149,697.19)	137,335	(-7.50%)	Direct
05/11/2026	05/12/2026	Carter Thomas L Jr Executive Chairman Officer Director	Buy	25,000 @ $13.47	$336,855.00	3,662,450	(0.69%)	Direct
05/08/2026	05/12/2026	Carter Thomas L Jr Executive Chairman Officer Director	Buy	23,604 @ $13.32	$314,372.23	3,637,450	(0.65%)	Direct
05/05/2026 10b5-1	05/06/2026	Putman Luke Stevens SVP, General Counsel, and Sec Officer	Sell	-29,386 @ $13.75	($403,998.73)	702,645	(-4.01%)	Direct
04/06/2026 10b5-1	05/06/2026	Putman Luke Stevens SVP, General Counsel, and Sec Officer	Sell	-29,386 @ $14.45	($424,677.66)	732,031	(-3.86%)	Direct
03/05/2026 10b5-1	05/06/2026	Putman Luke Stevens SVP, General Counsel, and Sec Officer	Sell	-30,276 @ $15.25	($461,584.87)	761,417	(-3.82%)	Direct

Black Stone Minerals, L.P. - BSM