Who made the purchase at $BSM?

DeWalch D Mark, Director, is the reporting insider on this Form 4, a purchase of about $985K.

Was the $BSM trade an open-market transaction or a 10b5-1 plan?

The trade was a discretionary, open-market transaction — not executed under a pre-arranged 10b5-1 plan.

What is the DEHY Score for this $BSM filing?

This filing scored 46 out of 100 on the DEHY Score, a 0–100 triage signal for how much analyst attention a filing warrants — not a price prediction.

← DEHY News

Insider BuyBSM·Jun 2 · June 2, 2026, 8:33 PM UTC

Black Stone Minerals director buys $985K of BSM

D. Mark DeWalch adds 72,000 units of the royalty partnership.

D. Mark DeWalch, a director of Black Stone Minerals, disclosed a $985K open-market purchase of BSM. Sizable director buys at a high-yield royalty name are worth a read for income-focused holders.

Reporting insider: DeWalch D Mark · Director · discretionary, open-market

The filing, structured

Security	Date	Type	Shares	Price	Owned after	Holding
Common units representing limited partner interests	2026-05-29	Open-market purchase	+36K	$13.48	595K	Indirect
Common units representing limited partner interests	2026-06-01	Open-market purchase	+36K	$13.62	631K	Indirect

DEHY Score 46 / 100Net bought $985KView the original Form 4 on SEC EDGAR →

FAQ

What insider transaction did Black Stone Minerals, L.P. (BSM) report?: D. Mark DeWalch, a director of Black Stone Minerals, disclosed a $985K open-market purchase of BSM. Sizable director buys at a high-yield royalty name are worth a read for income-focused holders.
Who made the purchase at $BSM?: DeWalch D Mark, Director, is the reporting insider on this Form 4, a purchase of about $985K.
Was the $BSM trade an open-market transaction or a 10b5-1 plan?: The trade was a discretionary, open-market transaction — not executed under a pre-arranged 10b5-1 plan.
What is the DEHY Score for this $BSM filing?: This filing scored 46 out of 100 on the DEHY Score, a 0–100 triage signal for how much analyst attention a filing warrants — not a price prediction.

Structured from public SEC data within seconds of filing. The DEHY Score is a 0–100 triage signal, not investment advice or a price prediction. See methodology.