| 1 | F B Operating, Inc. | Montague, TX 76251 | Oil & Gas Operator | Aug 2003 |
| 2 | Fagadau Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2006 |
| 3 | Falcon Operating Company | Wichita Falls, TX 76302 | Gas Operator | Jan 2000 |
| 4 | Farmer Operating, LLC | Olney, TX 76374 | Oil & Gas Operator | Dec 2019 |
| 5 | Farmer, Hayden | Olney, TX 76374 | Oil & Gas Operator | Feb 1997 |
| 6 | Farmer, Lewis & Hayden | Olney, TX 76374 | Oil & Gas Operator | Oct 2008 |
| 7 | Farmers Of Tulsa Energy Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Sep 1997 |
| 8 | Federal Energy Development Co. | Dallas, TX 75205 | Oil & Gas Operator | Mar 2011 |
| 9 | Felderhoff Production Company | Muenster, TX 76252 | Oil & Gas Operator | Dec 2025 |
| 10 | Felty Drilling Co. Inc | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 2025 |
| 11 | Felty, F. T. Operating Company | Burkburnett, TX 76354 | Oil & Gas Operator | Jul 2018 |
| 12 | Field Production Company | Cleburne, TX 76033 | Oil & Gas Operator | Mar 2023 |
| 13 | Finnell Oil Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2009 |
| 14 | Finnell Oil Services, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 15 | Fitts, B.K. Oil & Gas | Bowie, TX 76230 | Oil & Gas Operator | Dec 2025 |
| 16 | FMD Oil Co. | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2020 |
| 17 | Foree, R. L. Trust "A" | Dallas, TX 75225 | Oil & Gas Operator | Dec 1999 |
| 18 | Fortson Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2020 |
| 19 | Four Sevens Oil Co., LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2001 |
| 20 | Four Sevens Operating Co., LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 21 | Fullspike Energy LLC | Boyd, TX 76023 | Oil & Gas Operator | Dec 2025 |