EHRMAN BRADLEY J

SEC source: 0001437749-26-016382 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · .

Disclosed balance after: 142,723

F1 · ownership.direct: These common units are held by Quiscalus Ventures, LLC, in which Mr. Ehrman is the sole member.

F2 · ownership.direct: On December 31, 2025, the reporting person received 17,526 units from Bradley J. Ehrman in a transaction exempt from reporting pursuant to Rule 16a-13.

SEC source: 0001437749-25-038191 · rdgdoc.xml · derivative · entry 4

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,726

Underlying: Common Units · 4,727 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Notional Units granted on December 15, 2023, pursuant to the Dorchester Minerals Management LP Equity Incentive program. Each Notional Unit entitles the holder to receive either (1) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (2) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three year period beginning on December 15, 2024. Vested Notional Units are settled within 60 days after the date on which they vest.

F4 · derivative.exercise_date: Notional Units granted on December 15, 2023, pursuant to the Dorchester Minerals Management LP Equity Incentive program. Each Notional Unit entitles the holder to receive either (1) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (2) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three year period beginning on December 15, 2024. Vested Notional Units are settled within 60 days after the date on which they vest.

F4 · derivative.expiration_date: Notional Units granted on December 15, 2023, pursuant to the Dorchester Minerals Management LP Equity Incentive program. Each Notional Unit entitles the holder to receive either (1) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (2) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three year period beginning on December 15, 2024. Vested Notional Units are settled within 60 days after the date on which they vest.

SEC source: 0001437749-25-038191 · rdgdoc.xml · nonDerivative · entry 3

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,718

F3 · kind: Represents payment of tax liability incident to the grant of common units awarded to the reporting person on December 15, 2025 pursuant to an equity incentive plan, by withholding common units from such grant.

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-25-038191 · rdgdoc.xml · nonDerivative · entry 2

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,437

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-25-037040 · rdgdoc.xml · derivative · entry 4

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,620

Underlying: Common Units · 4,810 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Notional Units granted on December 3, 2024, pursuant to the Dorchester Minerals Management LP Equity Incentive program. Each Notional Unit entitles the holder to receive either (1) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (2) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three year period beginning on December 3, 2025. Vested Notional Units are settled within 60 days after the date on which they vest.

F4 · derivative.exercise_date: Notional Units granted on December 3, 2024, pursuant to the Dorchester Minerals Management LP Equity Incentive program. Each Notional Unit entitles the holder to receive either (1) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (2) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three year period beginning on December 3, 2025. Vested Notional Units are settled within 60 days after the date on which they vest.

F4 · derivative.expiration_date: Notional Units granted on December 3, 2024, pursuant to the Dorchester Minerals Management LP Equity Incentive program. Each Notional Unit entitles the holder to receive either (1) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (2) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three year period beginning on December 3, 2025. Vested Notional Units are settled within 60 days after the date on which they vest.

SEC source: 0001437749-25-037040 · rdgdoc.xml · nonDerivative · entry 2

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,710

F3 · kind: Represents payment of tax liability incident to the grant of common units awarded to the reporting person on December 3, 2025 pursuant to an equity incentive plan, by withholding common units from such grant.

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-25-037040 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,459

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-25-036813 · rdgdoc.xml · derivative · entry 4

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,000

Underlying: Common Units · 18,000 shares

Expires not disclosed

F4 · derivative.exercise_price: Notional Units granted on December 1, 2025, pursuant to the Dorchester Minerals Management LP Equity Incentive program. Each Notional Unit entitles the holder to receive either (1) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (2) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three year period beginning on December 1, 2026. Vested Notional Units are settled within 60 days after the date on which they vest.

F4 · derivative.exercise_date: Notional Units granted on December 1, 2025, pursuant to the Dorchester Minerals Management LP Equity Incentive program. Each Notional Unit entitles the holder to receive either (1) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (2) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three year period beginning on December 1, 2026. Vested Notional Units are settled within 60 days after the date on which they vest.

F4 · derivative.expiration_date: Notional Units granted on December 1, 2025, pursuant to the Dorchester Minerals Management LP Equity Incentive program. Each Notional Unit entitles the holder to receive either (1) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (2) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three year period beginning on December 1, 2026. Vested Notional Units are settled within 60 days after the date on which they vest.

SEC source: 0001437749-25-036813 · rdgdoc.xml · nonDerivative · entry 2

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,649

F3 · kind: Represents payment of tax liability incident to the grant of common units awarded to the reporting person on December 1, 2025 pursuant to an equity incentive plan, by withholding common units from such grant.

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-25-036813 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,192

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-25-036433 · rdgdoc.xml · nonDerivative · entry 2

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · .

Disclosed balance after: 121,197

F1 · ownership.direct: These common units are held by Quiscalus Ventures, LLC, in which Mr. Ehrman is the sole member.

SEC source: 0001437749-25-036433 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · .

Disclosed balance after: 118,710

F1 · ownership.direct: These common units are held by Quiscalus Ventures, LLC, in which Mr. Ehrman is the sole member.

SEC source: 0001437749-25-006175 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · .

Disclosed balance after: 117,710

F2 · balance_after: On 01-08-2025, the reporting person received 11,617 common units from Bradley J Ehrman in a transaction exempt from reporting pursuant to Rule 16a-13.

F1 · ownership.direct: These common units are held by Quiscalus Ventures, LLC, in which Mr. Ehrman is the sole member.

SEC source: 0001437749-24-037770 · rdgdoc.xml · derivative · entry 4

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,453

Underlying: Common Units · 4,727 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Notional Units granted on December 15, 2023, pursuant to the Dorchester Minerals Management LP Equity Incentive program. Each Notional Unit entitles the holder to receive either (1) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (2) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three year period beginning on December 15, 2024. Vested Notional Units are settled within 60 days after the date on which they vest.

F4 · derivative.exercise_date: Notional Units granted on December 15, 2023, pursuant to the Dorchester Minerals Management LP Equity Incentive program. Each Notional Unit entitles the holder to receive either (1) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (2) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three year period beginning on December 15, 2024. Vested Notional Units are settled within 60 days after the date on which they vest.

F4 · derivative.expiration_date: Notional Units granted on December 15, 2023, pursuant to the Dorchester Minerals Management LP Equity Incentive program. Each Notional Unit entitles the holder to receive either (1) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (2) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three year period beginning on December 15, 2024. Vested Notional Units are settled within 60 days after the date on which they vest.

SEC source: 0001437749-24-037770 · rdgdoc.xml · nonDerivative · entry 3

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,809

F3 · kind: Represents payment of tax liability incident to the grant of common units awarded to the reporting person on December 13, 2024 pursuant to an equity incentive plan, by withholding common units from such grant.

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-24-036813 · rdgdoc.xml · nonDerivative · entry 3

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,943

F3 · kind: Represents payment of tax liability incident to the grant of common units awarded to the reporting person on December 3, 2024 pursuant to an equity incentive plan, by withholding common units from such grant.

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-24-036813 · rdgdoc.xml · nonDerivative · entry 2

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,622

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-24-037773 · rdgdoc.xml · derivative · entry 2

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,430

Underlying: Common Units · 14,430 shares

Expires not disclosed

F1 · derivative.exercise_price: Notional Units granted on December 3, 2024, pursuant to the Dorchester Minerals Management LP Equity Incentive program. Each Notional Unit entitles the holder to receive either (1) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (2) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three year period beginning on December 3, 2025. Vested Notional Units are settled within 60 days after the date on which they vest.

F1 · derivative.exercise_date: Notional Units granted on December 3, 2024, pursuant to the Dorchester Minerals Management LP Equity Incentive program. Each Notional Unit entitles the holder to receive either (1) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (2) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three year period beginning on December 3, 2025. Vested Notional Units are settled within 60 days after the date on which they vest.

F1 · derivative.expiration_date: Notional Units granted on December 3, 2024, pursuant to the Dorchester Minerals Management LP Equity Incentive program. Each Notional Unit entitles the holder to receive either (1) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (2) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three year period beginning on December 3, 2025. Vested Notional Units are settled within 60 days after the date on which they vest.

SEC source: 0001437749-24-037773 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,622

F2 · kind: The transaction code for this acquisition was originally filed as Transaction Code "P" and is being corrected to Transaction Code "A".

F3 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-24-037770 · rdgdoc.xml · nonDerivative · entry 2

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,670

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-24-020598 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · .

Disclosed balance after: 102,737

F3 · balance_after: On 01-08-2024, the reporting person received 10,727 common units from Bradley J. Ehrman in a transaction exempt from reporting pursuant to Rule 16a-13.

F1 · ownership.direct: These common units are held by Quiscalus Ventures, LLC, in which Mr. Ehrman is the sole member.

SEC source: 0001437749-23-034788 · rdgdoc.xml · nonDerivative · entry 3

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,919

F3 · kind: Represents payment of tax liability incident to the grant of common units awarded to the reporting person on December 15, 2023 pursuant to an equity incentive plan, by withholding common units from such grant.

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-23-034788 · rdgdoc.xml · nonDerivative · entry 2

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,372

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-24-005109 · rdgdoc.xml · derivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,180

Underlying: Common Units · 14,180 shares

Expires not disclosed

F1 · derivative.exercise_price: Notional Units granted on December 15, 2023, pursuant to the Dorchester Minerals Management LP Equity Incentive Program. Each Notional Unit entitles the holder to receive either (i) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (ii) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three-year period beginning on December 15, 2024. Vested Notional Units are settled within 60 days after the date on which they vest.

F1 · derivative.exercise_date: Notional Units granted on December 15, 2023, pursuant to the Dorchester Minerals Management LP Equity Incentive Program. Each Notional Unit entitles the holder to receive either (i) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (ii) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three-year period beginning on December 15, 2024. Vested Notional Units are settled within 60 days after the date on which they vest.

F1 · derivative.expiration_date: Notional Units granted on December 15, 2023, pursuant to the Dorchester Minerals Management LP Equity Incentive Program. Each Notional Unit entitles the holder to receive either (i) the number of common units representing limited partnership interests in Dorchester Minerals, L.P. (the "Common Units") equal to the number of Notional Units that become vested or (ii) the cash equivalent at the time of vesting of the number of Common Units equal to the number of Notional Units that become vested. One-third of the Notional Units vest on each anniversary of the date of the award agreement over a three-year period beginning on December 15, 2024. Vested Notional Units are settled within 60 days after the date on which they vest.

SEC source: 0001437749-23-031662 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · .

Disclosed balance after: 89,210

F3 · balance_after: On January 11, 2023, the reporting person received 9,189 common units from Bradley J. Ehrman in a transaction exempt from reporting pursuant to Rule 16a-13.

F1 · ownership.direct: These common units are held by Quiscalus Ventures, LLC, in which Mr. Ehrman is the sole member.

SEC source: 0001437749-22-029395 · rdgdoc.xml · nonDerivative · entry 3

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,381

F3 · kind: Represents payment of tax liability incident to the grant of common units awarded to the reporting person on December 15, 2022 pursuant to an equity incentive plan, by withholding common units from such grant.

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-22-029395 · rdgdoc.xml · nonDerivative · entry 2

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,407

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-22-027052 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · .

Disclosed balance after: 75,568

F1 · ownership.direct: These common units are held by Quiscalus Ventures, LLC, in which Mr. Ehrman is the sole member.

SEC source: 0001437749-22-005818 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · .

Disclosed balance after: 73,808

F3 · balance_after: On December 31, 2021, the reporting person received 4,917 common units from Bradley J. Ehrman in a transaction exempt from reporting pursuant to Rule 16a-13.

F1 · ownership.direct: These common units are held by Quiscalus Ventures, LLC, in which Mr. Ehrman is the sole member.

SEC source: 0001437749-21-028959 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · .

Disclosed balance after: 67,582

F1 · ownership.direct: (1) These common units are held by Quiscalus Ventures, LLC, in which Mr. Ehrman is the sole member.

SEC source: 0001437749-21-028012 · rdgdoc.xml · nonDerivative · entry 3

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,109

F3 · kind: 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.

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan. On April 7, 2021, the reporting person contributed 4,924 common units to Quiscalus, a limited liability company of which the reporting person is the sole member, in a transaction exempt from reporting pursuant to Rule 16a-13.

SEC source: 0001437749-21-028012 · rdgdoc.xml · nonDerivative · entry 2

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,692

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan. On April 7, 2021, the reporting person contributed 4,924 common units to Quiscalus, a limited liability company of which the reporting person is the sole member, in a transaction exempt from reporting pursuant to Rule 16a-13.

SEC source: 0001437749-21-006427 · rdgdoc.xml · nonDerivative · entry 2

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,116

F3 · kind: Represents payment of tax liability incident to the grant of common units awarded to the reporting person on March 16, 2021 pursuant to the Dorchester Minerals Operating LP Equity Incentive Plan, by withholding common units from such grant.

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan. On December 18, 2019, the reporting person contributed 3,790 common units to Quiscalus, a limited liability company of which the reporting person is the sole member, in a transaction exempt from reporting pursuant to Rule 16a-13.

SEC source: 0001437749-21-006427 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,192

F2 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan. On December 18, 2019, the reporting person contributed 3,790 common units to Quiscalus, a limited liability company of which the reporting person is the sole member, in a transaction exempt from reporting pursuant to Rule 16a-13.

SEC source: 0001437749-20-013437 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · .

Disclosed balance after: 61,808

F1 · ownership.direct: (1) These common units are held by Quiscalus Ventures, LLC, in which Mr. Ehrman is the sole member.

SEC source: 0001437749-20-005086 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · .

Disclosed balance after: 57,808

F1 · ownership.direct: (1) These common units are held by Quiscalus Ventures, LLC, in which Mr. Ehrman is the sole member.

SEC source: 0001437749-20-004273 · rdgdoc.xml · nonDerivative · entry 2

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · .

Disclosed balance after: 55,808

F1 · ownership.direct: (1) These common units are held by Quiscalus Ventures, LLC, in which Mr. Ehrman is the sole member.

SEC source: 0001437749-20-004273 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · .

Disclosed balance after: 54,111

F1 · ownership.direct: (1) These common units are held by Quiscalus Ventures, LLC, in which Mr. Ehrman is the sole member.

SEC source: 0001437749-19-023834 · rdgdoc.xml · nonDerivative · entry 2

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,982

F3 · kind: Represents payment of tax liability incident to the grant of common units awarded to the reporting person on December 2, 2019 pursuant to the Dorchester Minerals Operating LP Equity Incentive Plan, by withholding common units from such grant.

F1 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-19-023834 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,192

F1 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-19-017006 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · .

Disclosed balance after: 49,808

F1 · ownership.nature: These common units are held by Quiscalus Ventures, LLC in which Mr. Ehrman is the sole member.

SEC source: 0001437749-19-009590 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · .

Disclosed balance after: 46,808

F1 · ownership.nature: These common units are held by Quiscalus Ventures, LLC in which Mr. Ehrman is the sole member.

SEC source: 0001437749-18-021636 · rdgdoc.xml · nonDerivative · entry 2

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,228

F3 · kind: Represents payment of tax liability incident to the grant of common units awarded to the reporting person on December 4, 2018 pursuant to the Dorchester Minerals Operating LP Equity Incentive Plan, by withholding common units from such grant.

F1 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-18-021636 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,192

F1 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-18-015531 · rdgdoc.xml · nonDerivative · entry 2

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · .

Disclosed balance after: 37,999

F1 · ownership.nature: These common units are held by Quiscalus Ventures, LLC in which Mr. Ehrman is the sole member.

SEC source: 0001437749-18-015531 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · .

Disclosed balance after: 35,352

F1 · ownership.nature: These common units are held by Quiscalus Ventures, LLC in which Mr. Ehrman is the sole member.

SEC source: 0001437749-18-009378 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · .

Disclosed balance after: 35,252

F1 · ownership.nature: These common units are held by Quiscalus Ventures, LLC in which Mr. Ehrman is the sole member.

SEC source: 0001437749-17-019884 · rdgdoc.xml · nonDerivative · entry 2

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,855

F2 · kind: Represents payment of tax liability incident to the grant of common units awarded to the reporting person on November 27, 2017 pursuant to the Dorchester Minerals Operating LP Equity Incentive Plan, by withholding common units from such grant.

F1 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-17-019884 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,522

F1 · ownership.direct: These common units are held by Mr. Ehrman in his individual name, IRA or Keogh Plan.

SEC source: 0001437749-17-019551 · rdgdoc.xml · nonDerivative · entry 1

EHRMAN BRADLEY J · CIK 0001642868 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · .

Disclosed balance after: 27,886

F1 · ownership.nature: These common units are held by Quiscalus Ventures, LLC in which Mr. Ehrman is the sole member.