| 1 | Eagle Capital Partners, LLC | Eunice, NM 88231 | Oil & Gas Operator | Oct 2025 |
| 2 | Earnest Producing Corporation | Midland, TX 79704 | Oil & Gas Operator | Oct 2025 |
| 3 | Earthstone Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jul 2025 |
| 4 | Eastern Petroleum Company | Girard, OH 44420 | Oil & Gas Operator | Sep 1995 |
| 5 | Eclipse Services, Inc. * | La Grange, TX 78945 | Oil & Gas Operator | Jul 2003 |
| 6 | Edmar Company, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Feb 2020 |
| 7 | Egi, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | Oct 2025 |
| 8 | El Paso E&P Company, L.P. | Houston, TX 77002 | Oil & Gas Operator | Mar 2013 |
| 9 | Elco Oil & Gas | San Angelo, TX 76902 | Oil & Gas Operator | Dec 2014 |
| 10 | Elco Oil & Gas, Inc. | San Angelo, TX 76902 | Oil & Gas Operator | Oct 2025 |
| 11 | Elevation Resources LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 12 | Ellison Lease Operating | Bridgeport, TX 76426 | Oil & Gas Operator | Oct 2025 |
| 13 | Encana Oil & Gas (USA) Inc. | Denver, CO 80202 | Oil & Gas Operator | Oct 2020 |
| 14 | Endeavor Energy Resources, LP | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 15 | Enduring Resources, LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Jul 2025 |
| 16 | Energy Equity Company | Columbus, MT 59019 | Oil & Gas Operator | Aug 2025 |
| 17 | Energy From Texas, L. P. | Dallas, TX 75230 | Oil & Gas Operator | Dec 2013 |
| 18 | Energy Onramp LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 19 | Energy Transfer Crude Marketing LLC | Dallas, TX 75225 | Oil Operator | May 2025 |
| 20 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 21 | Enex Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2009 |
| 22 | Enron Oil & Gas Company | Houston, TX 77210 | Oil & Gas Operator | Dec 1999 |
| 23 | EOG Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 24 | EP Energy E&P Company, LP | Houston, TX 77210 | Oil & Gas Operator | Jan 2023 |
| 25 | Esperanza Energy Corp. | Prosper, TX 75078 | Oil & Gas Operator | Mar 2015 |
| 26 | Estoril Producing Corporation | Midland, TX 79701 | Oil & Gas Operator | Apr 1994 |
| 27 | Et Gathering & Processing LLC | Dallas, TX 75225 | Oil Operator | Dec 2024 |
| 28 | Everquest Energy Corporation | Fredericksbrg, TX 78624 | Oil & Gas Operator | Oct 2025 |
| 29 | Exceed Petroleum LLC | Houston, TX 77070 | Oil & Gas Operator | Oct 2025 |
| 30 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Jun 2025 |
| 31 | Exco/Hgi JV Assets, LLC | Dallas, TX 75251 | Oil & Gas Operator | Jun 2014 |
| 32 | Expro Engineering, Inc. | Fort Worth, TX 76179 | Oil & Gas Operator | Oct 2025 |
| 33 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 34 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2024 |