| 1 | Fagadau Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2006 |
| 2 | Farmers Of Tulsa Energy Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Sep 1997 |
| 3 | Fasken Oil And Ranch, LTD. | Midland, TX 79707 | Oil & Gas Operator | Mar 2025 |
| 4 | Fasken, Barbara | Midland, TX 79701 | Oil & Gas Operator | Dec 1995 |
| 5 | FDL Operating, LLC | Judson, TX 75660 | Oil & Gas Operator | Mar 2025 |
| 6 | Fed Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 7 | Felix Energy Holdings II, LLC | Tulsa, OK 74172 | Oil & Gas Operator | Apr 2020 |
| 8 | Fiml Natural Resources, LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2014 |
| 9 | Finaly Resources LLC | Sunset Beach, CA 90742 | Oil & Gas Operator | Mar 2025 |
| 10 | Finley Resources Inc | Fort Worth, TX 76113 | Oil & Gas Operator | Mar 2025 |
| 11 | First Reserve Oil & Gas Co | Houston, TX 77002 | Oil & Gas Operator | Apr 2000 |
| 12 | Fivestones Energy LLC | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 13 | Flat Top Operating, LLC | Midland, TX 79707 | Oil & Gas Operator | Mar 2025 |
| 14 | Forest Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 15 | Forest Oil Permian Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 16 | Forte Energy Corporation | Dallas, TX 75205 | Oil & Gas Operator | Dec 2010 |
| 17 | Fortson Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2020 |
| 18 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Mar 2025 |