X0306 4 2021-12-03 0001172358 DORCHESTER MINERALS, L.P. DMLP 0001642865 MORIYAMA LESLIE A 3838 OAK LAWN AVE SUITE 300 DALLAS TX 75219 1 Chief Financial Officer Common Units 2021-12-03 4 A 0 5500 17.69 A 36810 D Common Units 2021-12-03 4 F 0 1498 17.69 D 35312 D These common units are held by Ms. Moriyama in her individual name, jointly with her spouse or in her Individual Retirement Account. Represents payment of tax liability incident to the grant of common units awarded to the reporting person on December 3, 2021 pursuant to the Dorchester Minerals Operating LP Equity Incentive Plan, by withholding common units from such grant. /s/ Leslie A. Moriyama 2021-12-06