| 1 | E 3 Petroleum Corp | St Petersburg, FL 33701 | Oil & Gas Operator | Dec 2018 |
| 2 | Eagle Energy, Inc. | Moreland, KS 67650 | Oil & Gas Operator | Dec 2021 |
| 3 | Earthgrains Of West VIrginia, Inc. | | Gas Operator | Apr 2008 |
| 4 | East Resources, Inc. | Sewickley, PA 15143 | Oil & Gas Operator | Dec 2021 |
| 5 | Eastern Associated Coal/Peabody Coal Co. | | Oil & Gas Operator | Jul 2004 |
| 6 | Eastern Gas Transmission And Storage, Inc | | Oil & Gas Operator | Dec 2021 |
| 7 | Eastern States Exploration Co. | | Gas Operator | Dec 2021 |
| 8 | Eastern States Oil & Gas, Inc. | Ravenna, OH 44266 | Oil & Gas Operator | Dec 2020 |
| 9 | Ecological Energy, Inc. | Morgantown, WV 26507-0000 | Oil & Gas Operator | Dec 2021 |
| 10 | Ed Broome, Inc. | Glenville, WV 26351 | Oil & Gas Operator | Dec 2021 |
| 11 | Elahs Gas Co., Inc. | | Oil & Gas Operator | Dec 2021 |
| 12 | Elder Oil Co. | West Union, WV 26456 | Oil & Gas Operator | Dec 2021 |
| 13 | Elmore Production Services Inc | | Oil & Gas Operator | Dec 2008 |
| 14 | Elvis Energy, LLC | Philippi, WV 26416 | Gas Operator | Dec 2021 |
| 15 | Emax Oil Company | Charlottesville, VA 22903-4973 | Oil & Gas Operator | Dec 2016 |
| 16 | Emco Energy, Inc. | Stephenson, VA 22656 | Gas Operator | Dec 2018 |
| 17 | Emma Gas Co | Man, WV 25635 | Gas Operator | Dec 2021 |
| 18 | Empire Oil & Gas, Inc. | Harrisville, WV 26362 | Oil & Gas Operator | Dec 2021 |
| 19 | Empire Oil Company | Coppell, TX 75019 | Oil & Gas Operator | Feb 2026 |
| 20 | Energy Contractors, Inc. | Canal Wincheste, OH 43110 | Oil & Gas Operator | Dec 2019 |
| 21 | Energy Corporation Of America | Charleston, WV 25311 | Oil & Gas Operator | Dec 2023 |
| 22 | Energy Development Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2024 |
| 23 | Energy Production, Inc. | Canton, OH 44711 | Oil & Gas Operator | Dec 2021 |
| 24 | Energy Search Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2007 |
| 25 | Energy Unlimited Inc | | Oil & Gas Operator | Feb 2005 |
| 26 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 27 | Enervest Operating, L.L.C., A Limited Liability Company | | Oil & Gas Operator | Dec 2019 |
| 28 | Engler, Inc. | Harlingen, TX 78552-0000 | Gas Operator | Dec 2020 |
| 29 | EOG Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 30 | Eqt Chap, LLC | Canonsburg, PA 15317-1000 | Oil & Gas Operator | Dec 2025 |
| 31 | Eqt Production Company | Pittsburg, PA 15222 | Oil & Gas Operator | Dec 2025 |
| 32 | Equitable Gas Company | Pittsburgh, PA 15212-5352 | Gas Operator | Dec 2013 |
| 33 | Equitable Production Company | Charleston, WV 25302 | Oil & Gas Operator | Dec 2007 |
| 34 | Equitrans, L. P. | Cannonsburg, PA 15317 | Oil & Gas Operator | Jul 2021 |
| 35 | Erp Environmental Fund, Inc. | | Gas Operator | Dec 2018 |
| 36 | Evans, Robert P. | | Oil & Gas Operator | Nov 2009 |
| 37 | Exco Resources (Pa), LLC | Montoursville, PA 17754-2235 | Oil & Gas Operator | Dec 2025 |
| 38 | Exco Resources (WV), Inc. | | Oil & Gas Operator | Dec 2020 |