| 1 | A.E.N. Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Jan 1996 |
| 2 | Ab Reserve, LLC | Rockdale, TX 76567 | Oil Operator | Oct 2025 |
| 3 | Abernathy Auto, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 4 | Abilene American Energy, LLC | Abilene, TX 79602 | Oil Operator | Oct 2025 |
| 5 | Adair Resources Inc. | Ennis, TX 75120 | Oil & Gas Operator | Apr 2018 |
| 6 | Adkins, R. L. Corp. | Lubbock, TX 79408 | Oil & Gas Operator | Jun 2013 |
| 7 | Albany Well Service | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 8 | Alco Oil & Gas Co. LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Oct 2025 |
| 9 | Alexander Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 10 | Alexander Resources, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Oct 2025 |
| 11 | Amen Oil LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 12 | Amerac Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2013 |
| 13 | American Eagle Resources, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Oct 2025 |
| 14 | American Energy | Abilene, TX 79604 | Oil & Gas Operator | Jul 2004 |
| 15 | Anderson Production | Cisco, TX 76437 | Oil & Gas Operator | Oct 2025 |
| 16 | Anderson, E D | Cisco, TX 76437 | Oil & Gas Operator | Nov 2009 |
| 17 | Anderson, James K. Inc. | Abilene, TX 79608 | Oil & Gas Operator | Oct 2025 |
| 18 | Apex Production LTD. | Albany, TX 76430 | Oil Operator | Oct 2025 |
| 19 | Apexco, Inc. | Sand Springs, OK 74063 | Oil & Gas Operator | Mar 2025 |
| 20 | Archer Petroleum | Frisco, TX 75034 | Oil & Gas Operator | Aug 2021 |
| 21 | Arnot Oil Company, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 22 | Arnot, W. G., Jr. | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2017 |
| 23 | Arrowhead Productions, LP | Fort Worth, TX 76109 | Oil & Gas Operator | Oct 2025 |
| 24 | Ashtola Exploration Company,Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Oct 2025 |
| 25 | Atmos Pipeline - Texas | Dallas, TX 75240 | Oil & Gas Operator | Oct 2025 |
| 26 | Atwell Technical Services, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 27 | Avad Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |