DORCHESTER MINERALS OPERATING LP - 17 Dec 2025 Form 4 Insider Report for DORCHESTER MINERALS, L.P. (DMLP)

Signature
/s/ Leslie A. Moriyama
Issuer symbol
DMLP
Transactions as of
17 Dec 2025
Net transactions value
+$445,216
Form type
4
Filing time
19 Dec 2025, 15:20:28 UTC
Previous filing
02 Dec 2025
Next filing
23 Dec 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
DORCHESTER MINERALS OPERATING LP Entity Under Common Control 3838 OAK LAWN AVE, SUITE 300, DALLAS /s/ Leslie A. Moriyama 19 Dec 2025 0001646289

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction DMLP Common Units Purchase $94,794 +4,271 +25124% $22.19 4,288 17 Dec 2025 Direct F1
transaction DMLP Common Units Purchase $350,422 +15,729 +367% $22.28 20,017 18 Dec 2025 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 Adoption date of referenced 10b5-1 plan is: 11-12-2025