| 1 | Eagle Operating, Inc. | Minot, ND 58701 | Oil & Gas Operator | Oct 2025 |
| 2 | East Cheyenne Gas Storage LLC | | Oil & Gas Operator | Sep 2025 |
| 3 | Edge Energy II LLC | Golden, CO 80401 | Oil & Gas Operator | Nov 2025 |
| 4 | Edge Energy LLC | | Oil & Gas Operator | Sep 2025 |
| 5 | Edwards Energy Corporation | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 6 | El Paso E&P Company, L.P. | Houston, TX 77002 | Oil & Gas Operator | Mar 2013 |
| 7 | Ellora LLC | Boulder, CO 80308 | Oil & Gas Operator | Feb 2009 |
| 8 | Elm Ridge Exploration Company LLC | Bloomfield, NM 87413 | Oil & Gas Operator | Nov 2017 |
| 9 | Encana Energy Resources Inc | Denver, CO 80202-2828 | Oil & Gas Operator | Feb 2024 |
| 10 | Encana Oil & Gas (USA) Inc. | Denver, CO 80202 | Oil & Gas Operator | Oct 2020 |
| 11 | Enduring Resources, LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Sep 2025 |
| 12 | Energen Resources Corporation | Midland, TX 79701 | Oil & Gas Operator | Jan 2021 |
| 13 | Energy Alliance Company Inc | | Oil & Gas Operator | Jan 2018 |
| 14 | Energy Investments Inc. | | Oil & Gas Operator | Sep 2025 |
| 15 | Energy Search Company Inc | Aurora, CO 80011 | Oil & Gas Operator | Jun 2021 |
| 16 | Energyquest II, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Aug 2025 |
| 17 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 18 | Enprop Inc | | Oil & Gas Operator | Feb 2013 |
| 19 | Entek GRB LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2021 |
| 20 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 21 | Epic Energy, L.L.C. | Aztec, NM 87410 | Oil & Gas Operator | Sep 2025 |
| 22 | Evergreen Natural Resources LLC | | Gas Operator | Oct 2025 |
| 23 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Aug 2025 |
| 24 | Extraction Oil & Gas LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2025 |
| 25 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Dec 2025 |