| 1 | F & M Oil & Gas Co | Midland, TX 79702 | Oil & Gas Operator | Feb 2000 |
| 2 | Fagadau Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2006 |
| 3 | Falcon Creek Resources, Inc. | Tulsa, OK 74137 | Oil & Gas Operator | Apr 2001 |
| 4 | Famcor Oil, Inc. | Scottsdale, AZ 85260 | Oil & Gas Operator | Sep 2020 |
| 5 | Fasken Oil And Ranch, LTD. | Midland, TX 79707 | Oil & Gas Operator | Oct 2025 |
| 6 | Fasken, Barbara | Midland, TX 79701 | Oil & Gas Operator | Dec 1995 |
| 7 | FDL Operating, LLC | Judson, TX 75660 | Oil & Gas Operator | Oct 2025 |
| 8 | Federal Oil, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Oct 2025 |
| 9 | Felderhoff Production Company | Muenster, TX 76252 | Oil & Gas Operator | Oct 2025 |
| 10 | Fiml Natural Resources, LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2014 |
| 11 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 12 | Finley Resources Inc | Fort Worth, TX 76113 | Oil & Gas Operator | Oct 2025 |
| 13 | First Permian, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 14 | Flat Top Operating, LLC | Midland, TX 79707 | Oil & Gas Operator | Oct 2025 |
| 15 | Flint Oak Energy, LLC | Montgomery, TX 77356 | Oil & Gas Operator | Oct 2025 |
| 16 | Floyd Oil Co | Houston, TX 77002 | Oil & Gas Operator | Nov 1999 |
| 17 | Floyd Operating Company | Houston, TX 77002 | Oil & Gas Operator | Jul 2004 |
| 18 | Forest Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 19 | Forest Oil Permian Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 20 | Forge Energy, LLC | San Antonio, TX 78249 | Oil & Gas Operator | Apr 2019 |
| 21 | Fortson Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2020 |
| 22 | Fortuna Resources Dvlpment, LLC | Houston, TX 77055 | Oil & Gas Operator | Oct 2025 |
| 23 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Oct 2025 |
| 24 | Fredonia Resources Inc. | Longview, TX 75606 | Oil & Gas Operator | Aug 2003 |
| 25 | Free Rein Operating LLC | Brenham, TX 77834 | Oil & Gas Operator | Oct 2025 |
| 26 | Fusion Energy Holdings, LLC | Throckmorton, TX 76483 | Oil Operator | Oct 2025 |