Based on data from the past 90 days ending February 19, 2026, Dorchester Minerals's three largest insider shareholders are Chairman Of The Board William Casey Mcmanemin (706.48K shares), Chief Executive Officer Bradley J Ehrman (155.63K shares), Chief Financial Officer Leslie A Moriyama (98.21K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| William Casey Mcmanemin | Chairman Of The Board | 706,481 | 11 Apr, 2024 |
| Bradley J Ehrman | Chief Executive Officer | 155,634 | 17 Dec, 2025 |
| Leslie A Moriyama | Chief Financial Officer | 98,208 | 17 Dec, 2025 |
| Minerals Operating Lp Dorchester | 55,017 | 13 Feb, 2026 | |
| H C Jr Allen | 30,608 | 02 Jun, 2021 | |
| Robert C Vaughn | 20,547 | 02 Dec, 2025 | |
| Ronald Paul Trout | 19,672 | 06 Dec, 2021 | |
| Allen D Lassiter | 18,767 | 06 Dec, 2021 | |
| Charles William Russell | 14,767 | 06 Dec, 2021 | |
| Frank Damon Box | 9,000 | 03 Dec, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 13 Feb, 2026 | Minerals Operating Lp Dorchester | Common Units | A | 5,000 | $25.29 | 55,017 | D | P |
| 12 Feb, 2026 | Minerals Operating Lp Dorchester | Common Units | A | 5,000 | $25.08 | 50,017 | D | P |
| 11 Feb, 2026 | Minerals Operating Lp Dorchester | Common Units | A | 10,000 | $25.29 | 45,017 | D | P |
| 22 Dec, 2025 | Minerals Operating Lp Dorchester | Common Units | A | 10,000 | $22.30 | 35,017 | D | P |
| 19 Dec, 2025 | Minerals Operating Lp Dorchester | Common Units | A | 5,000 | $22.23 | 25,017 | D | P |
| 18 Dec, 2025 | Minerals Operating Lp Dorchester | Common Units | A | 15,729 | $22.28 | 20,017 | D | P |
| 17 Dec, 2025 | Minerals Operating Lp Dorchester | Common Units | A | 4,271 | $22.19 | 4,288 | D | P |
| 15 Dec, 2025 | Leslie A Moriyama | Common Units | D | 1,756 | $0.00 | 98,208 | D | F |
| 15 Dec, 2025 | Leslie A Moriyama | Common Units | A | 4,351 | $0.00 | 99,964 | D | M |
| 15 Dec, 2025 | Bradley J Ehrman | Common Units | D | 1,719 | $0.00 | 34,437 | D | F |
| 15 Dec, 2025 | Bradley J Ehrman | Common Units | A | 4,727 | $0.00 | 121,197 | I | M |
| 03 Dec, 2025 | Leslie A Moriyama | Common Units | D | 1,621 | $0.00 | 95,613 | D | F |
| 03 Dec, 2025 | Leslie A Moriyama | Common Units | A | 4,017 | $0.00 | 97,234 | D | M |
| 03 Dec, 2025 | Bradley J Ehrman | Common Units | D | 1,749 | $0.00 | 29,710 | D | F |
| 03 Dec, 2025 | Bradley J Ehrman | Common Units | A | 4,810 | $0.00 | 31,459 | D | M |
| 03 Dec, 2025 | Frank Damon Box | Common Units | A | 5,000 | $21.96 | 9,000 | D | P |
| 03 Dec, 2025 | Frank Damon Box | - | - | 9,000 | D | |||
| 01 Dec, 2025 | Leslie A Moriyama | Common Units | D | 6,456 | $21.63 | 93,217 | D | F |
| 01 Dec, 2025 | Leslie A Moriyama | Common Units | A | 16,000 | $21.63 | 99,673 | D | A |
| 01 Dec, 2025 | Bradley J Ehrman | - | - | 26,649 | D |