DORCHESTER MINERALS, L.P. (DMLP) has 208 open-market insider trades by 13 insiders since 2006. Over the last six months insiders net bought $254K. The most active filer is Technologies Inc. Master Pension Trust Lucent, 10%.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| Technologies Inc. Master Pension Trust Lucent | 10% | — | 82 | $10.2M | 2006-12-28 |
| William Casey McManemin | CEO | — | 5 | $5.3M | 2024-04-05 |
| Martha Rochelle | Dir | — | 3 | $3.0M | 2020-06-01 |
| Bradley J. Ehrman | CEO | — | 26 | $2.9M | 2026-05-12 |
| H. C. Allen Jr. | Dir | — | 41 | $2.8M | 2021-05-28 |
| Robert C. Vaughn | Dir | — | 10 | $2.6M | 2025-11-28 |
| Leslie A. Moriyama | CFO | — | 15 | $2.3M | 2026-08-19 |
| Dorchester Minerals Operating L.P. | — | — | 13 | $1.9M | 2026-06-01 |
| James E. Raley | Chairman | — | 7 | $1.2M | 2017-06-30 |
| Allen D. Lassiter | Dir | — | 1 | $276K | 2021-12-03 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| Leslie A. Moriyama | CFO | Buy | $147K | 2026-08-19 |
| Dorchester Minerals Operating L.P. | — | Buy | $207K | 2026-06-01 |
| Dorchester Minerals Operating L.P. | — | Buy | $212K | 2026-05-20 |
| Bradley J. Ehrman | CEO | Buy | $107K | 2026-05-12 |
| Dorchester Minerals Operating L.P. | — | Buy | $505K | 2026-02-11 |
| Dorchester Minerals Operating L.P. | — | Buy | $334K |
Companies that share insiders with DMLP, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| 2025-12-19 |
| Dorchester Minerals Operating L.P. | — | Buy | $890K | 2025-12-17 |
| Frank Damon Box | Director | Buy | $110K | 2025-12-03 |
| Robert C. Vaughn | Director | Buy | $4K | 2025-11-28 |
| Robert C. Vaughn | Director | Buy | $190K | 2025-11-25 |
| Leslie A. Moriyama | CFO | Buy | $131K | 2025-11-25 |
| Bradley J. Ehrman | CEO | Buy | $129K | 2025-11-25 |
| Frank Damon Box | Director | Buy | $102K | 2025-09-05 |
| Dorchester Minerals Operating L.P. | — | Buy | $288K | 2025-04-30 |
| Bradley J. Ehrman | CEO | Buy | $200K | 2025-03-03 |