| 1 | Advantagewon Oil, Us, Corp. | Batson, TX 77519 | Oil Operator | Dec 2019 |
| 2 | Agape Energy Inc. | San Antonio, TX 78280 | Oil Operator | Mar 2025 |
| 3 | Alcor Energy, Inc. | San Antonio, TX 78239 | Oil & Gas Operator | Mar 2025 |
| 4 | Alcorn Energy, L.L.C. | Woodway, TX 76712 | Oil Operator | Mar 2025 |
| 5 | Allen & Grace Oil Company | Kingsbury, TX 78638 | Oil & Gas Operator | Jul 1997 |
| 6 | Alpha Omega Petroleum, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Mar 1996 |
| 7 | American Cascade Energy, Inc. | Barker, TX 77413 | Oil & Gas Operator | Mar 2025 |
| 8 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Mar 2025 |
| 9 | Armidillo Oil Company | Luling, TX 78648 | Oil & Gas Operator | Mar 2025 |
| 10 | Aruba Petroleum, LTD. | Dallas, TX 75206 | Oil & Gas Operator | Aug 2003 |
| 11 | Asante Operating Company, LLC | Austin, TX 78703 | Oil Operator | Mar 2025 |
| 12 | Austin Operating, LLC. | Chicago, IL 60622 | Oil Operator | Mar 2025 |
| 13 | Austral Oil Company Incorporated | Sulphur, LA 70663 | Oil & Gas Operator | Mar 2008 |
| 14 | Avian Tech International, Inc. | Euless, TX 76040 | Oil & Gas Operator | Apr 1995 |
| 15 | Axis Energy Corporation | Roswell, NM 88202 | Oil & Gas Operator | Mar 2025 |