What happened
Dorchester Minerals Operating LP, an entity under common control of Dorchester Minerals, L.P. (NASDAQ:DMLP), executed purchases of common units in the parent partnership across three transactions conducted from February 11 to February 13, 2026. The total acquisition comprised 20,000 units and cost $504,750. The buys were carried out pursuant to a pre-arranged 10b5-1 trading plan.
Transaction details
- February 11, 2026 - 10,000 units purchased at $25.29 per unit.
- February 12, 2026 - 5,000 units purchased at $25.08 per unit.
- February 13, 2026 - 5,000 units purchased at $25.29 per unit.
Following these transactions, Dorchester Minerals Operating LP directly holds 55,017 common units of Dorchester Minerals, L.P. The Form 4 documenting the trades was signed on behalf of Dorchester Minerals Operating LP by Leslie A. Moriyama.
Leadership update
In a separate disclosure, Dorchester Minerals, L.P. announced that William Casey McManemin will retire from the Board of Managers of Dorchester Minerals Management GP LLC effective December 31, 2025. McManemin has a lengthy history with the company: he served as Chief Executive Officer for more than 19 years and has been Board Chairman since the Partnership’s inception in 2003. His association with Dorchester’s predecessors extends for over 37 years, marking a long tenure with the organization.
The partnership has not named a successor to McManemin in his roles. The filing notes that his departure will bring to a close the period in which he was a central figure in the company’s founding and growth. Investors and observers are left awaiting any future announcements regarding leadership succession and the company’s strategic direction following this change.
Context and implications
The unit purchases were made within the framework of a pre-established 10b5-1 plan, and the Form 4 signature indicates formal reporting of the insider activity. The retirement announcement provides concrete timing of an executive transition but does not include information on who will take over McManemin’s responsibilities.
Additional notes
The filings referenced here establish the factual record for both the insider purchases and the upcoming management change. No successor has been named, and no further guidance from the company was included in the disclosures that accompany these filings.