| 1 | Samurai Operating Company | Dayton, TX 77535 | Oil & Gas Operator | Dec 2021 |
| 2 | Sara Jenny Energy Inc | Chesterland, OH 44026 | Oil & Gas Operator | Dec 2023 |
| 3 | Seagull Development Corp | Massillon, OH 44646-7436-7436 | Oil & Gas Operator | Dec 2015 |
| 4 | Select Energy Investments Inc | Solon, OH 44139 | Oil & Gas Operator | Dec 2019 |
| 5 | Shafer David Oil Prod Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2000 |
| 6 | Sound Energy Co Inc | Dover, OH 44622 | Oil & Gas Operator | Dec 2023 |
| 7 | South Shore Energy LLC | Geneva, OH 44041-0800-0800 | Oil & Gas Operator | Dec 2023 |
| 8 | Sparta Energy Corp | Oak Brook, IL 60521 | Oil & Gas Operator | Dec 1985 |
| 9 | Spencer Resources Inc | Richmond, VA 23225 | Oil & Gas Operator | Dec 1993 |
| 10 | Stackhouse Construction Inc | Orwell, OH 44076 | Oil & Gas Operator | Dec 2023 |
| 11 | Stonebridge Operating Co LLC | Marietta, OH 45750-0060-0060 | Oil & Gas Operator | Dec 2023 |
| 12 | Summit Petroleum Inc | Twinsburg, OH 44087 | Oil & Gas Operator | Dec 2023 |