| 1 | Abernathy Auto, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 2 | Adams, Lynn V. | Nocona, TX 76255 | Oil & Gas Operator | Oct 2025 |
| 3 | Aec Oil & Gas USA Inc | Denver, CO 80202 | Oil & Gas Operator | May 2004 |
| 4 | Aeternum Energy, LLC | Nederland, TX 77627 | Oil & Gas Operator | Oct 2025 |
| 5 | Akins Oil Company | Wichita Falls, TX 76302 | Oil & Gas Operator | Oct 2025 |
| 6 | Allen, C. L. (Doie) | Wichita Falls, TX 76309 | Oil & Gas Operator | Oct 2025 |
| 7 | Alpha Exploration Co. | Wichita Falls, TX 76309 | Oil & Gas Operator | Oct 1998 |
| 8 | Altex Resources, Inc. | Carney, OK 74832 | Oil & Gas Operator | Mar 2015 |
| 9 | Amen Oil LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 10 | American Operating Company | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2003 |
| 11 | American West Resources, Inc | Fort Worth, TX 76161 | Oil & Gas Operator | Oct 2025 |
| 12 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Jul 2025 |
| 13 | Anschutz Exploration Corporation | Denver, CO 80202 | Oil & Gas Operator | Oct 2025 |
| 14 | Antle Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 15 | Aog, Inc. | Norman, OK 73070 | Oil & Gas Operator | Nov 2014 |
| 16 | Apex Operating & Equip. Co. | Bowie, TX 76230 | Oil & Gas Operator | Nov 2003 |
| 17 | Archer Reef Oil Co. | Bellevue, TX 76228 | Oil & Gas Operator | Oct 2025 |
| 18 | Arco Oil & Gas Company | Plano, TX 75086 | Oil & Gas Operator | Mar 2006 |
| 19 | Aries Operating LP | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 20 | Arkoma Prod Co Of Texas, Inc. | Dallas, TX 75225 | Oil Operator | May 2004 |
| 21 | Arrow Oil & Gas, LLC | Norman, OK 73070 | Oil & Gas Operator | Oct 2025 |
| 22 | Arrowhead Productions, LP | Fort Worth, TX 76109 | Oil & Gas Operator | Oct 2025 |
| 23 | Aruba Petroleum, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Jun 2025 |
| 24 | Aspen Operating Company LLC | Fort Worth, TX 76116 | Oil & Gas Operator | Oct 2025 |
| 25 | Atkinson, Jim | Nocona, TX 76255 | Oil & Gas Operator | Oct 2025 |
| 26 | Atlas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 27 | Atoka Energy LLC | Gainesville, TX 76241 | Oil & Gas Operator | Oct 2025 |
| 28 | Atoka Operating, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Oct 2025 |
| 29 | August Oil | Plano, TX 75093 | Oil & Gas Operator | Aug 2003 |
| 30 | Azteca Petroleum, LLC | Fort Worth, TX 76106 | Oil & Gas Operator | Oct 2025 |