| 1 | A Berry Enterprises LLC | Freeport, OH 43973 | Oil & Gas Operator | Dec 2023 |
| 2 | Ab Resources Oh LLC | Brecksville, OH 44141 | Oil & Gas Operator | Dec 2010 |
| 3 | Alliance Petroleum Corporation | Canton, OH 44718-2553-2553 | Oil & Gas Operator | Dec 2019 |
| 4 | Alsid Oil & Gas | Hanoverton,, OH 44423 | Oil & Gas Operator | Dec 2003 |
| 5 | Altier Brothers Inc | Corning, OH 43730 | Oil & Gas Operator | Dec 2023 |
| 6 | Am-Tek Oil Inc | New Philadelphia, OH 44663 | Oil & Gas Operator | Dec 2022 |
| 7 | American Energy Utica LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Sep 2015 |
| 8 | Amex Energy Consults Inc | Columbus, OH 43214 | Oil & Gas Operator | Dec 1988 |
| 9 | An-Car Oil Co, Inc | Owensboro, KY 42302-1329-1329 | Oil & Gas Operator | Dec 2014 |
| 10 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Nov 2024 |
| 11 | Antero Resources Corporation | Denver, CO 80202 | Oil & Gas Operator | Jun 2024 |
| 12 | Appalachian Expl Inc | Hartville, OH 44632-550-550 | Oil & Gas Operator | Dec 1992 |
| 13 | Artex Energy Group LLC | Marietta, OH 45750-5362-5362 | Oil & Gas Operator | Jun 2022 |
| 14 | Artex Oil Company | Marietta, OH 45750 | Oil & Gas Operator | Dec 2023 |
| 15 | Ascent Resources Utica LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Jun 2024 |
| 16 | Atlas Energy Group Inc | Uniontown, OH 44685-9575-9575 | Oil & Gas Operator | Dec 2011 |
| 17 | Atlas Noble LLC | Fort Worth, TX 76116-5423-5423 | Oil & Gas Operator | Jun 2020 |
| 18 | Atwood Resources Inc | Houston, TX 72151-89-89 | Oil & Gas Operator | Dec 1993 |
| 19 | Aw Tipka Oil & Gas Inc | Dover, OH 44622 | Oil & Gas Operator | Dec 2023 |