| 1 | A & R Energy Inc | Pittsburgh, PA 15244 | Oil & Gas Operator | Dec 2013 |
| 2 | A & R Oil & Gas Of Monroe & Washington Counties LLC | New Matamoras, OH 45767-0646-0646 | Oil & Gas Operator | Dec 2023 |
| 3 | A Producing Co | Wooster, OH 44691 | Oil & Gas Operator | Dec 1992 |
| 4 | Ab Resources Oh LLC | Brecksville, OH 44141 | Oil & Gas Operator | Dec 2010 |
| 5 | Adobe Resources Corporation | Midland, TX 79701 | Oil & Gas Operator | Aug 2002 |
| 6 | Alliance Petroleum Corporation | Canton, OH 44718-2553-2553 | Oil & Gas Operator | Dec 2019 |
| 7 | Altheirs Oil, Inc. | Corning, OH 43730 | Oil & Gas Operator | Dec 2023 |
| 8 | Altier Brothers Inc | Corning, OH 43730 | Oil & Gas Operator | Dec 2023 |
| 9 | Am-Tek Oil Inc | Spokane, WA 99201 | Oil & Gas Operator | Dec 2023 |
| 10 | Amac Inc | Newark, OH 43055 | Oil & Gas Operator | Dec 1989 |
| 11 | American Petroleum Corp | Addison, TX 75001 | Oil & Gas Operator | Feb 2025 |
| 12 | Anderson Bobby B | Fleming, OH 45729 | Oil & Gas Operator | Dec 2023 |
| 13 | Anderson Energy, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Aug 2024 |
| 14 | Anderson, Allen M | Fleming, OH 45729 | Oil & Gas Operator | Dec 2023 |
| 15 | Appalachian Ener Tech Inc | Clearwater, FL 33518 | Oil & Gas Operator | Dec 2001 |
| 16 | Appalachian Petrol Corp | Girard, OH 44420 | Oil & Gas Operator | Dec 1989 |
| 17 | Arapaho Ventures Of Ny | Englewood, CO 80155 | Oil & Gas Operator | Dec 1990 |
| 18 | Armstrong Robert D | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2023 |
| 19 | Artex Oil Company | Marietta, OH 45750 | Oil & Gas Operator | Dec 2023 |
| 20 | Ashland Exploration Inc | Houston, TX 77218 | Oil & Gas Operator | Nov 2000 |
| 21 | Atlantic Energy Corp Inc | Marietta, OH 45750 | Oil & Gas Operator | Dec 1991 |
| 22 | Atlas Noble LLC | Fort Worth, TX 76116-5423-5423 | Oil & Gas Operator | Jun 2020 |
| 23 | Aw Tipka Oil & Gas Inc | Dover, OH 44622 | Oil & Gas Operator | Dec 2023 |