| 1 | A Berry Enterprises LLC | Freeport, OH 43973 | Oil & Gas Operator | Dec 2023 |
| 2 | A Miller Oil Company | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2023 |
| 3 | A W Yenne Trust No 2 | Wooster, OH 44691 | Oil & Gas Operator | Dec 2018 |
| 4 | Ab Resources Oh LLC | Brecksville, OH 44141 | Oil & Gas Operator | Dec 2010 |
| 5 | Akron Oil Corp | Hackensack, NJ 7602 | Oil & Gas Operator | Dec 1989 |
| 6 | Allegheny Producers Inc | Cambridge, OH 43725 | Oil & Gas Operator | Dec 1984 |
| 7 | Allen Mabel C | Dublin, OH 43017 | Oil Operator | Dec 1988 |
| 8 | Alliance Petroleum Corporation | Canton, OH 44718-2553-2553 | Oil & Gas Operator | Dec 2019 |
| 9 | Alsid Oil & Gas | Hanoverton,, OH 44423 | Oil & Gas Operator | Dec 2003 |
| 10 | Altex Inc | Corning, OH 43730 | Oil & Gas Operator | Dec 1985 |
| 11 | Altheirs Oil, Inc. | Corning, OH 43730 | Oil & Gas Operator | Dec 2023 |
| 12 | Altier Brothers Inc | Corning, OH 43730 | Oil & Gas Operator | Dec 2023 |
| 13 | Altier Petroleum Inc | Crooksville, OH 43731 | Oil & Gas Operator | Dec 2023 |
| 14 | Am-Tek Oil Inc | New Philadelphia, OH 44663 | Oil & Gas Operator | Dec 2022 |
| 15 | Amac Inc | Newark, OH 43055 | Oil & Gas Operator | Dec 1989 |
| 16 | Amex Energy Consults Inc | Columbus, OH 43214 | Oil & Gas Operator | Dec 1988 |
| 17 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |
| 18 | Appalachian Expl Inc | Hartville, OH 44632-550-550 | Oil & Gas Operator | Dec 1992 |
| 19 | Arrowhead Oil & Gas Co | Gambier, OH 43022 | Oil & Gas Operator | Dec 2010 |
| 20 | Artex Energy Group LLC | Marietta, OH 45750-5362-5362 | Oil & Gas Operator | Jun 2022 |
| 21 | Artex Oil Company | Marietta, OH 45750 | Oil & Gas Operator | Dec 2023 |
| 22 | Atlas Energy Group Inc | Uniontown, OH 44685-9575-9575 | Oil & Gas Operator | Dec 2011 |
| 23 | Atlas Noble LLC | Fort Worth, TX 76116-5423-5423 | Oil & Gas Operator | Jun 2020 |