<div id="readability-page-1"><div>Moriyama Leslie A Chief Financial Officer of Dorchester Minerals LP [DMLP] filed a Form 4 on December 17, 2025 with the Securities and Exchange Commission disclosing the following changes in ownership:<div><table><tbody><tr><th>Date</th><th>Transaction</th><th>Shares</th><th>Price</th><th>Value</th></tr><tr><td>12/15/25</td><td>Exercise</td><td>4,351</td><td>$0.00</td><td>N/A</td></tr><tr><td>12/15/25</td><td>Surrender(1)</td><td>1,756</td><td>$22.06</td><td>$38,737</td></tr></tbody></table></div>Ending Holdings: 98,208 - Direct<ul><li>(1)</li><li>Surrender of shares back to company to pay option exercise cost and/or resulting tax liability.</li></ul>For a free trial, or to learn more about our insider trading analysis and data services, please visit http://www.washingtonservice.com or contact us at (301) 913-5100 or send an email to info@washingtonservice.com.Founded in 1970, The Washington Service provides securities professionals with financial, economic and public policy research and data. </div></div>

DMLP

CFO Moriyama Leslie A of Dorchester Minerals LP filed a Form 4 with the SEC, disclosing changes in ownership. On December 15, 2025, Moriyama exercised 4,351 shares and surrendered 1,756 shares at $22.06 each to cover option exercise costs and tax liabilities. Ending holdings are 98,208 shares directly. The Washington Service offers insider trading analysis and data services.

CFO Moriyama Acquires 2,595 Of Dorchester Minerals LP [DMLP]