| 1 | Black Hills Plateau Production LLC | | Gas Operator | Sep 2016 |
| 2 | Encana Oil & Gas (USA) Inc. | Denver, CO 80202 | Oil & Gas Operator | Oct 2020 |
| 3 | Fees Jr And Son Oil & Gas* Walter S | | Oil & Gas Operator | Feb 2026 |
| 4 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | May 2026 |
| 5 | Fram Operating LLC | | Oil & Gas Operator | Dec 2018 |
| 6 | Gordon Engineering Inc | | Gas Operator | Jan 2026 |
| 7 | Grand Mesa Operating Company | Wichita, KS 67206 | Oil & Gas Operator | Mar 2026 |
| 8 | Great Northern Gas Company | Denver, CO 80293-0602 | Oil & Gas Operator | Jun 2016 |
| 9 | Grynberg* Jack Dba Grynberg Petroleum Co | | Oil Operator | Jan 2023 |
| 10 | Locin Oil Corporation | Katy, TX 77494 | Oil & Gas Operator | May 2026 |
| 11 | Lone Mountain Production Company | | Oil & Gas Operator | Jan 2016 |
| 12 | National Fuel Corporation | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Feb 2026 |
| 13 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | May 2026 |
| 14 | P & M Petroleum Management LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2021 |
| 15 | Par Pacific Holdings Inc | | Oil & Gas Operator | Jun 2010 |
| 16 | Petro Mex Resources | | Oil & Gas Operator | Mar 2026 |
| 17 | Piceance Energy LLC | | Oil & Gas Operator | Feb 2026 |
| 18 | QB Energy Operating LLC | | Oil & Gas Operator | Feb 2026 |
| 19 | Swevco-Sabw LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 20 | Vision Energy LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 21 | WPX Energy Rocky Mountain LLC | Tulsa, OK 74101 | Oil & Gas Operator | Feb 2026 |
| 22 | Xog Operating LLC | Midland, TX 79702 | Oil & Gas Operator | May 2026 |