DMLP (Dorchester Minerals LP)
Insider Trading Activity
Every open-market purchase and sale reported by DMLP officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-19 | LESLIE A MORIYAMA | Chief Financial Officer | Buy | — | — |
| 2026-06-02 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2026-05-22 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2026-05-12 | BRADLEY J EHRMAN | Chief Executive Officer | Buy | — | — |
| 2026-02-13 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2025-12-23 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2025-12-19 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2025-12-17 | LESLIE A MORIYAMA | Chief Financial Officer | MIXED | — | — |
| 2025-12-17 | BRADLEY J EHRMAN | Chief Executive Officer | MIXED | — | — |
| 2025-12-05 | LESLIE A MORIYAMA | Chief Financial Officer | MIXED | — | — |
| 2025-12-05 | BRADLEY J EHRMAN | Chief Executive Officer | MIXED | — | — |
| 2025-12-03 | Frank Damon Box | Director | Buy | — | — |
| 2025-12-03 | LESLIE A MORIYAMA | Chief Financial Officer | MIXED | — | — |
| 2025-12-03 | BRADLEY J EHRMAN | Chief Executive Officer | MIXED | — | — |
| 2025-12-02 | DORCHESTER MINERALS OPERATING LP | — | J | — | — |
| 2025-12-02 | ROBERT C VAUGHN | Director | Buy | — | — |
| 2025-11-28 | LESLIE A MORIYAMA | Chief Financial Officer | Buy | — | — |
| 2025-11-28 | ROBERT C VAUGHN | Director | Buy | — | — |
| 2025-11-26 | BRADLEY J EHRMAN | Chief Executive Officer | Buy | — | — |
| 2025-09-08 | Frank Damon Box | Director | Buy | — | — |
| 2025-05-01 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2025-03-04 | BRADLEY J EHRMAN | Chief Executive Officer | Buy | — | — |
| 2025-02-07 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2025-02-04 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2024-12-30 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2024-12-26 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2024-12-17 | BRADLEY J EHRMAN | Chief Executive Officer | MIXED | — | — |
| 2024-12-17 | BRADLEY J EHRMAN | Chief Executive Officer | A | — | — |
| 2024-12-17 | LESLIE A MORIYAMA | Chief Financial Officer | A | — | — |
| 2024-12-17 | LESLIE A MORIYAMA | Chief Financial Officer | MIXED | — | — |
| 2024-12-12 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2024-12-05 | LESLIE A MORIYAMA | Chief Financial Officer | MIXED | — | — |
| 2024-12-05 | DORCHESTER MINERALS OPERATING LP | — | J | — | — |
| 2024-12-05 | BRADLEY J EHRMAN | Chief Executive Officer | MIXED | — | — |
| 2024-11-15 | LESLIE A MORIYAMA | Chief Financial Officer | Buy | — | — |
| 2024-07-23 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2024-07-18 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2024-06-18 | BRADLEY J EHRMAN | Chief Executive Officer | Buy | — | — |
| 2024-05-23 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2024-05-20 | LESLIE A MORIYAMA | Chief Financial Officer | Buy | — | — |
| 2024-04-11 | WILLIAM CASEY MCMANEMIN | Chairman of the Board | G | — | — |
| 2024-02-21 | BRADLEY J EHRMAN | Chief Executive Officer | A | — | — |
| 2024-02-21 | LESLIE A MORIYAMA | Chief Financial Officer | A | — | — |
| 2024-02-05 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2024-02-01 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2024-01-29 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2023-12-27 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2023-12-22 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2023-12-21 | DORCHESTER MINERALS OPERATING LP | — | Buy | — | — |
| 2023-12-18 | BRADLEY J EHRMAN | Chief Executive Officer | MIXED | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Chairman of the Board | 1,174,284 | — |
| — | Director | 358,486 | — |
| — | Chief Executive Officer | 157,915 | — |
| — | Chief Financial Officer | 103,405 | — |
| — | — | 66,016 | — |
| — | Director | 40,547 | — |
| — | Director | 39,028 | — |
| — | Vice Chairman | 32,252 | — |
| — | Director | 21,922 | — |
| — | Director | 18,767 | — |
| — | Director | 14,767 | — |
| — | Director | 9,000 | — |
| — | Director | 2,000 | — |
| — | Director | 1,000 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the DMLP quote page; the site-wide leaderboard is on the insider transactions hub.