D. Mark DeWalch - Insider Trading & Ownership

Location
C/O Black Stone Minerals, L.P., 1001 Fannin Street, Suite 2020, Houston, TX
Summary
The estimated net worth of D. Mark DeWalch is at least $12.9M dollars as of October 7, 2025. D. Mark DeWalch is the Director of Black Stone Minerals, L.P. and owns shares of Black Stone Minerals, L.P. (BSM) stock worth about $12.9M.
Signature
/s/ Steve Putman, attorney-in-fact for D. Mark DeWalch
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Ownership of D. Mark DeWalch

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
BSM, BSMLP Black Stone Minerals, L.P. Director $12.9M Oct 3, 2025

Insider Transactions Reported by D. Mark DeWalch:

Sym Company Class Transaction % Value $ * Price $ Shares Shares After Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.