| 1 | Eagle Expl Co/Johnson J | Bolivar, OH 44612 | Oil & Gas Operator | Dec 1989 |
| 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 44691-4683-4683 | Oil & Gas Operator | Dec 2023 |
| 5 | Edco Drilling & Producing | MT Gilead, OH 43338 | Oil & Gas Operator | Dec 2006 |
| 6 | Elan Energy Inc | Toledo, OH 43604-1207-1207 | Oil & Gas Operator | Dec 1990 |
| 7 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 8 | Enterprise Energy Corp | Cambridge, OH 43725 | Oil & Gas Operator | Dec 1985 |
| 9 | Environmental BR Ser Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 1987 |
| 10 | Environmental Exp Co | North Canton, OH 44720 | Oil & Gas Operator | Dec 1998 |
| 11 | Eos Energy LLC | Columbus, OH 43026 | Oil & Gas Operator | Dec 2023 |
| 12 | Equity Oil & Gas Funds Inc | Orlando, FL 32837-6103-6103 | Oil & Gas Operator | Dec 2023 |
| 13 | Everflow Eastern Partners LP | Canfield, OH 44406 | Oil & Gas Operator | Dec 2024 |
| 14 | Exco - North Coast Energy Inc | Kittanning, PA 16201 | Oil & Gas Operator | Dec 2018 |