DMLP

SEC source: 0001437749-24-038420 · rdgdoc.xml · nonDerivative · entry 3

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 28,728

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-05-2024

SEC source: 0001437749-24-038420 · rdgdoc.xml · nonDerivative · entry 2

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 27,728

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-05-2024

SEC source: 0001437749-24-038420 · rdgdoc.xml · nonDerivative · entry 1

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 24,728

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-05-2024

SEC source: 0001437749-24-037771 · rdgdoc.xml · derivative · entry 3

MORIYAMA LESLIE A · CIK 0001642865 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,701

Underlying: Common Units · 4,351 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.

F3 · 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.

F3 · 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.

F3 · 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: 0001437749-24-037771 · rdgdoc.xml · nonDerivative · entry 2

MORIYAMA LESLIE A · CIK 0001642865 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,632

F2 · 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.

F1 · ownership.direct: These common units are held by Ms. Moriyama in her individual name, jointly with her spouse or in her Individual Retirement Account.

SEC source: 0001437749-24-037771 · rdgdoc.xml · nonDerivative · entry 1

MORIYAMA LESLIE A · CIK 0001642865 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 82,258

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.

F1 · ownership.direct: These common units are held by Ms. Moriyama in her individual name, jointly with her spouse or in her Individual Retirement Account.

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: 0001437749-24-037374 · rdgdoc.xml · nonDerivative · entry 11

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 22,228

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-05-2024

SEC source: 0001437749-24-037374 · rdgdoc.xml · nonDerivative · entry 10

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 21,228

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-05-2024

SEC source: 0001437749-24-037374 · rdgdoc.xml · nonDerivative · entry 9

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,228

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-05-2024

SEC source: 0001437749-24-037374 · rdgdoc.xml · nonDerivative · entry 8

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,223

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-05-2024

SEC source: 0001437749-24-037374 · rdgdoc.xml · nonDerivative · entry 7

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 16,223

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-05-2024

SEC source: 0001437749-24-037374 · rdgdoc.xml · nonDerivative · entry 6

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,223

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-05-2024

SEC source: 0001437749-24-037374 · rdgdoc.xml · nonDerivative · entry 5

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 14,223

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-05-2024

SEC source: 0001437749-24-037374 · rdgdoc.xml · nonDerivative · entry 4

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,223

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-05-2024

SEC source: 0001437749-24-037374 · rdgdoc.xml · nonDerivative · entry 3

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,223

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-05-2024

SEC source: 0001437749-24-037374 · rdgdoc.xml · nonDerivative · entry 2

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 7,223

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-05-2024

SEC source: 0001437749-24-037374 · rdgdoc.xml · nonDerivative · entry 1

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,228

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-05-2024

SEC source: 0001437749-24-036814 · rdgdoc.xml · nonDerivative · entry 2

MORIYAMA LESLIE A · CIK 0001642865 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 77,907

F2 · 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.

F1 · ownership.direct: These common units are held by Ms. Moriyama in her individual name, jointly with her spouse or in her Individual Retirement Account.

SEC source: 0001437749-24-036814 · rdgdoc.xml · nonDerivative · entry 1

MORIYAMA LESLIE A · CIK 0001642865 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,450

F1 · ownership.direct: These common units are held by Ms. Moriyama in her individual name, jointly with her spouse or in her Individual Retirement Account.

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: 0001437749-24-036812 · rdgdoc.xml · nonDerivative · entry 1

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 228

F1 · kind: Pro rata distribution to its general and limited partners.

SEC source: 0001437749-24-037774 · rdgdoc.xml · derivative · entry 2

MORIYAMA LESLIE A · CIK 0001642865 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,050

Underlying: Common Units · 12,050 shares

Expires not disclosed

F3 · 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.

F3 · 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.

F3 · 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: 0001437749-24-037774 · rdgdoc.xml · nonDerivative · entry 1

MORIYAMA LESLIE A · CIK 0001642865 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,450

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

F1 · ownership.direct: These common units are held by Ms. Moriyama in her individual name, jointly with her spouse or in her Individual Retirement Account.

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: 0001437749-24-035511 · rdgdoc.xml · nonDerivative · entry 1

MORIYAMA LESLIE A · CIK 0001642865 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,400

F1 · ownership.direct: These common units are held by Ms. Moriyama in her individual name, jointly with her spouse or in her Individual Retirement Account.

SEC source: 0001437749-24-023284 · rdgdoc.xml · nonDerivative · entry 3

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 66,352

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-10-2023

SEC source: 0001437749-24-023284 · rdgdoc.xml · nonDerivative · entry 2

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 65,452

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-10-2023

SEC source: 0001437749-24-023284 · rdgdoc.xml · nonDerivative · entry 1

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 64,452

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-10-2023

SEC source: 0001437749-24-023025 · rdgdoc.xml · nonDerivative · entry 3

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 63,452

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-10-2023

SEC source: 0001437749-24-023025 · rdgdoc.xml · nonDerivative · entry 2

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 61,574

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-10-2023

SEC source: 0001437749-24-023025 · rdgdoc.xml · nonDerivative · entry 1

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 60,574

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-10-2023

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: 0001437749-24-018105 · rdgdoc.xml · nonDerivative · entry 10

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 58,574

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-10-2023

SEC source: 0001437749-24-018105 · rdgdoc.xml · nonDerivative · entry 9

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 57,674

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-10-2023

SEC source: 0001437749-24-018105 · rdgdoc.xml · nonDerivative · entry 8

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 56,674

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-10-2023

SEC source: 0001437749-24-018105 · rdgdoc.xml · nonDerivative · entry 7

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 55,674

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-10-2023

SEC source: 0001437749-24-018105 · rdgdoc.xml · nonDerivative · entry 6

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 55,574

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-10-2023

SEC source: 0001437749-24-018105 · rdgdoc.xml · nonDerivative · entry 5

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 54,574

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-10-2023

SEC source: 0001437749-24-018105 · rdgdoc.xml · nonDerivative · entry 4

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 53,574

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-10-2023

SEC source: 0001437749-24-018105 · rdgdoc.xml · nonDerivative · entry 3

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 52,574

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-10-2023

SEC source: 0001437749-24-018105 · rdgdoc.xml · nonDerivative · entry 2

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 51,574

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-10-2023

SEC source: 0001437749-24-018105 · rdgdoc.xml · nonDerivative · entry 1

DORCHESTER MINERALS OPERATING LP · CIK 0001646289 · Entity Under Common Control

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 50,574

F1 · kind: Adoption date of referenced 10b5-1 plan is: 11-10-2023

SEC source: 0001437749-24-017712 · rdgdoc.xml · nonDerivative · entry 2

MORIYAMA LESLIE A · CIK 0001642865 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 68,182

F1 · ownership.direct: These common units are held by Ms. Moriyama in her individual name, jointly with her spouse or in her Individual Retirement Account.

SEC source: 0001437749-24-017712 · rdgdoc.xml · nonDerivative · entry 1

MORIYAMA LESLIE A · CIK 0001642865 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,182

F1 · ownership.direct: These common units are held by Ms. Moriyama in her individual name, jointly with her spouse or in her Individual Retirement Account.

SEC source: 0001437749-24-011814 · rdgdoc.xml · nonDerivative · entry 1

MCMANEMIN WILLIAM CASEY · CIK 0001049123 · Director · Chairman of the Board

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 706,481

F1 · price: These units were transferred as a result of a bona fide gift transaction.