ASHLEY J LONGMAID plan to sell securities of BLACK STONE MINERALS, L.P. under Form 144

ASHLEY J LONGMAID filed Form 144 to notify SEC of plan to sell 11128 units of BLACK STONE MINERALS, L.P. securities around 2026-05-12, with aggregate market value of $149,697.19. The total outstanding units is 212499331.0. The amount planned to be sold represents 0.01% of total outstanding units;