| 1 | 4 J'S Production | Zephyr, TX 76890 | Oil & Gas Operator | Dec 2025 |
| 2 | Agroil, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Dec 2025 |
| 3 | Arnot, W. G., Jr. | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2017 |
| 4 | Cedar Ridge Energy, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Dec 2025 |
| 5 | Delray Oil, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Dec 2025 |
| 6 | Enre Corp. | San Antonio, TX 78209 | Oil & Gas Operator | Mar 2005 |
| 7 | Gassiot Holding Corporation | Coleman, TX 76834 | Oil & Gas Operator | Apr 2016 |
| 8 | Grand Banks Energy Company | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 9 | Houston Oil & Minerals Corp. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 10 | Jubilee Oil And Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | Nov 2009 |
| 11 | Kimsey, Roy E., Jr. | Midland, TX 79701 | Oil & Gas Operator | May 2018 |
| 12 | Leclair Operating Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Dec 2025 |
| 13 | McBee, Jim Co. | Santa Anna, TX 76878 | Oil & Gas Operator | Mar 2012 |
| 14 | Millennium Minerals Corporation | Fredericksbrg, TX 78624 | Oil Operator | Dec 2025 |
| 15 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 16 | Pillows, Burl A. | Houston, TX 77062 | Oil & Gas Operator | Dec 2025 |
| 17 | Smith Pipe Of Abilene | Abilene, TX 79608 | Oil & Gas Operator | Dec 2025 |
| 18 | Spiller Operating Co., Inc. | Round Rock, TX 78665 | Oil & Gas Operator | May 2015 |
| 19 | Wes-Mor Drilling, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 20 | West Bay Exploration Company | Muenster, TX 76252 | Oil & Gas Operator | Oct 2025 |