| 1 | Eastern Amer Energy Corp | Charleston, WV 25304 | Oil & Gas Operator | Dec 2006 |
| 2 | Eastern States Oil & Gas, Inc. | Ravenna, OH 44266 | Oil & Gas Operator | Dec 2020 |
| 3 | Eastland Energy Group Inc | Byesville, OH 43723 | Oil & Gas Operator | Dec 2025 |
| 4 | Eclipse Resources-Ohio LLC | Morgantown, WV 26508 | Oil & Gas Operator | Dec 2020 |
| 5 | Eco Power Crypto LLC | Katy, TX 77494 | Oil & Gas Operator | Dec 2025 |
| 6 | Eco Production LLC | Wooster, OH 44691-4683 | Oil & Gas Operator | Dec 2024 |
| 7 | Elephant Exploration Inc. | Hartville, OH 44632 | Oil & Gas Operator | Dec 2025 |
| 8 | Energy Development Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2025 |
| 9 | Energy Resources Of America Inc | North Jackson, OH 44451 | Oil & Gas Operator | Dec 2022 |
| 10 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | May 2026 |
| 11 | Enterprise Energy Corp | Cambridge, OH 43725 | Oil & Gas Operator | Dec 1985 |
| 12 | Environmental Exp Co | North Canton, OH 44720 | Oil & Gas Operator | Dec 1998 |
| 13 | EOG Ohio, LLC | New Albany, OH 43054-2646 | Oil & Gas Operator | Dec 2025 |
| 14 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | May 2026 |
| 15 | Eos Energy LLC | Columbus, OH 43026 | Oil & Gas Operator | Dec 2024 |
| 16 | Equity Oil & Gas Funds Inc | Orlando, FL 32837-6103 | Oil & Gas Operator | Dec 2025 |
| 17 | Eric Petroleum Corp | Austintown, OH 44515-1053 | Oil & Gas Operator | Dec 2025 |
| 18 | Everflow Eastern Partners LP | Canfield, OH 44406 | Oil & Gas Operator | Dec 2025 |
| 19 | Excalibur Exploration Inc | Greentown, OH 44630 | Oil & Gas Operator | Dec 2020 |
| 20 | Exco - North Coast Energy Inc | Kittanning, PA 16201 | Oil & Gas Operator | Dec 2018 |
| 21 | Eyster Oil Company LLC | Magnolia, OH 44643 | Oil & Gas Operator | Dec 2025 |