| 1 | F & R Oil Co. | Dallas, TX 75205 | Oil & Gas Operator | May 2005 |
| 2 | F&H Operating Company LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 3 | Farmer Operating, LLC | Olney, TX 76374 | Oil & Gas Operator | Dec 2019 |
| 4 | Farmer, Hayden | Olney, TX 76374 | Oil & Gas Operator | Feb 1997 |
| 5 | Farmer, Lewis & Hayden | Olney, TX 76374 | Oil & Gas Operator | Oct 2008 |
| 6 | Federal Energy Development Co. | Dallas, TX 75205 | Oil & Gas Operator | Mar 2011 |
| 7 | Felderhoff Production Company | Muenster, TX 76252 | Oil & Gas Operator | Oct 2025 |
| 8 | FGB Energy, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Aug 2017 |
| 9 | Fidelity Petroleum Corporation | Plano, TX 75074 | Oil & Gas Operator | Oct 2025 |
| 10 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 11 | Fishcreek Minerals, LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 12 | Five K Partnership | Graham, TX 76450 | Oil & Gas Operator | Oct 2023 |
| 13 | Five States Energy Company | Dallas, TX 75206 | Oil & Gas Operator | Mar 2008 |
| 14 | Flint Rock Resources MGMNT, Inc. | Austin, TX 78734 | Oil & Gas Operator | Oct 2025 |
| 15 | Foag, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2022 |
| 16 | Four Corners Energy, LLC | Gulf Breeze, FL 32563 | Oil & Gas Operator | Oct 2025 |
| 17 | Four H Oil Properties | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 18 | Fredonia Resources Inc. | Longview, TX 75606 | Oil & Gas Operator | Aug 2003 |
| 19 | Frontier Resources, Inc. | Dallas, TX 75214 | Oil & Gas Operator | Oct 2025 |
| 20 | Fullspike Energy LLC | Boyd, TX 76023 | Oil & Gas Operator | Oct 2025 |
| 21 | Fultz Oil Company | Fort Worth, TX 76121 | Oil & Gas Operator | Dec 1995 |
| 22 | Future Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 1999 |