| 1 | Fairchild Well Service Inc | Ponca City, OK 74602-0470 | Oil & Gas Operator | Jun 2006 |
| 2 | Fairview Production Co LLC | Davis, OK 73030 | Oil & Gas Operator | Jul 2025 |
| 3 | Fallen Timbers Energy LLC | Tulsa, OK 74105-8713 | Oil Operator | Feb 2021 |
| 4 | Federal Energy Development Co. | Dallas, TX 75205 | Oil & Gas Operator | Mar 2011 |
| 5 | Ferraro Energy Corporation | Oklahoma City, OK 73114-6629 | Oil & Gas Operator | Aug 2013 |
| 6 | FGS Energy LLC | Duncan, OK 73533-1829 | Oil & Gas Operator | Jun 2025 |
| 7 | Flatt Energy Inc | | Oil & Gas Operator | Sep 2019 |
| 8 | Forest 1 Development Company | Denver, CO 80202-4966 | Oil & Gas Operator | Mar 2008 |
| 9 | Freedom Operating Company LLC | Tulsa, OK 74136-6834 | Oil & Gas Operator | Jun 2025 |