| 1 | Afe Oil & Gas Consultants | Addison, TX 75001 | Gas Operator | Jan 2003 |
| 2 | Atmos Pipeline - Texas | Dallas, TX 75240 | Oil & Gas Operator | Nov 2024 |
| 3 | Beacon E&P Company, LLC | Denver, CO 80202 | Gas Operator | Feb 2016 |
| 4 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jul 2024 |
| 5 | Chesapeake Operating, LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Nov 2024 |
| 6 | Chief Oil & Gas LLC | Dallas, TX 75225 | Oil & Gas Operator | Feb 2022 |
| 7 | Dale Operating Company | Dallas, TX 75201 | Oil & Gas Operator | Nov 2024 |
| 8 | Eagleridge Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Nov 2024 |
| 9 | Expro Engineering, Inc. | Fort Worth, TX 76179 | Oil & Gas Operator | Nov 2024 |
| 10 | Gha Barnett, LLC | Irving, TX 75062 | Gas Operator | Nov 2024 |
| 11 | Hess, Jerry Operating Co. | Muenster, TX 76252 | Oil & Gas Operator | Nov 2024 |
| 12 | Legend Natural Gas IV, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 13 | Mobil Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2016 |
| 14 | Newark E&P Operating, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2017 |
| 15 | Newark Energy LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2011 |
| 16 | North Texas Llano Operating Corp | Dallas, TX 75225 | Oil & Gas Operator | Nov 2024 |
| 17 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 18 | Tep Barnett USA, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2024 |
| 19 | Trinity River Energy Oper, LLC | Houston, TX 77008 | Oil & Gas Operator | May 2018 |
| 20 | Wynn-Crosby Operating, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2024 |
| 21 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Nov 2024 |