| 1 | Eastern Amer Energy Corp | Charleston, WV 25304 | Oil & Gas Operator | Dec 2006 |
| 2 | Eastland Energy Group Inc | Byesville, OH 43723 | Oil & Gas Operator | Dec 2023 |
| 3 | Eclipse Resources-Ohio LLC | Morgantown, WV 26508 | Oil & Gas Operator | Dec 2020 |
| 4 | Eco Production LLC | Wooster, OH 44691-4683 | Oil & Gas Operator | Dec 2023 |
| 5 | Edco Drilling & Producing | MT Gilead, OH 43338 | Oil & Gas Operator | Dec 2006 |
| 6 | Ellen P Sharp LLC | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2024 |
| 7 | Enczi Frank | Junction City, OH 43748 | Oil & Gas Operator | Dec 2016 |
| 8 | Energy Contractors, Inc. | Canal Wincheste, OH 43110 | Oil & Gas Operator | Dec 2019 |
| 9 | Energy Distributors Inc | Zanesville, OH 43701 | Oil & Gas Operator | Dec 1987 |
| 10 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 11 | Eninun Inc | Dayton, OH 45415 | Oil & Gas Operator | Dec 1984 |
| 12 | Enterprise Energy Corp | Cambridge, OH 43725 | Oil & Gas Operator | Dec 1985 |
| 13 | Envirogas Inc | Hamburg, NY 14075 | Oil & Gas Operator | Dec 1992 |
| 14 | EOG Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 15 | Equity Oil & Gas Funds Inc | Orlando, FL 32837-6103 | Oil & Gas Operator | Dec 2023 |
| 16 | Eric Petroleum Corp | Austintown, OH 44515-1053 | Oil & Gas Operator | Dec 2024 |
| 17 | Everflow Eastern Partners LP | Canfield, OH 44406 | Oil & Gas Operator | Dec 2023 |
| 18 | Exco - North Coast Energy Inc | Kittanning, PA 16201 | Oil & Gas Operator | Dec 2018 |