| 1 | Eagle Oil & Gas, Inc. | | Oil & Gas Operator | Nov 1984 |
| 2 | Eagle Oil Management Co., LLC | | Oil & Gas Operator | Jan 2023 |
| 3 | Eclipse Services, Inc. * | La Grange, TX 78945 | Oil & Gas Operator | Jul 2003 |
| 4 | Egh Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 5 | El Paso Field Services Company | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 6 | Elizabeth Oil Company | | Oil Operator | Oct 1999 |
| 7 | Elysium Jennings, LLC | | Oil & Gas Operator | Dec 2024 |
| 8 | Emerald Oil Company, L.L.C. | E. Rochester, NY 14445 | Oil & Gas Operator | Jan 2025 |
| 9 | Empresa Energy IV, LLC | | Oil & Gas Operator | Aug 2019 |
| 10 | Empresa Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 11 | Enable Midstream Partners, LP | Oklahoma City, OK 73124 | Oil Operator | Sep 2023 |
| 12 | Encana Oil & Gas (USA) Inc. | Denver, CO 80202 | Oil & Gas Operator | Oct 2020 |
| 13 | Endeavor Energy Resources, LP | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 14 | Endurance Operating LLC | | Oil & Gas Operator | Dec 2024 |
| 15 | Enerco Exploration & MGMT. Co. | | Oil & Gas Operator | Aug 1981 |
| 16 | Energy Development Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2024 |
| 17 | Energy Program Accompany | | Oil Operator | Dec 2006 |
| 18 | Energy Sources, Inc. | | Oil & Gas Operator | Nov 1990 |
| 19 | Enerquest Oil & Gas LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Jan 2025 |
| 20 | Ensight IV Energy Management,LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 21 | Ensight Resources, L.L.C. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2001 |
| 22 | EOG Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 23 | Eram, Inc. | | Oil & Gas Operator | Dec 2024 |
| 24 | Eroc Gathering Company, LP | | Oil Operator | Jul 2014 |
| 25 | Et Gathering & Processing LLC | Dallas, TX 75225 | Oil Operator | Dec 2024 |
| 26 | Etc Field Services LLC | San Antonio, TX 78258 | Oil Operator | Jun 2018 |
| 27 | Etc Texas Pipeline, LTD. | Dallas, TX 75225 | Oil Operator | Sep 2023 |
| 28 | Ettco Enterprises, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2024 |
| 29 | Eucutta Petroleum Inc. | | Oil & Gas Operator | Sep 2000 |
| 30 | Euroamerican Energy Group Inc | | Oil & Gas Operator | Oct 1993 |
| 31 | Excel Oil & Gas, Inc. | Waxahachie, TX 75168 | Oil & Gas Operator | Apr 2025 |
| 32 | Excel Royalty Company, LLC | | Oil Operator | Jun 2022 |
| 33 | Exco Production Company, LP | Dallas, TX 75251 | Oil & Gas Operator | Dec 2009 |
| 34 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2024 |