| 1 | Fairway Links Energy, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Aug 2016 |
| 2 | Floyd Operating Company | Houston, TX 77002 | Oil & Gas Operator | Jul 2004 |
| 3 | Focus Energy, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Nov 2019 |
| 4 | Forest Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 5 | Formation Resources Field Services, LLC | Woodward, OK 73801 | Gas Operator | May 2024 |
| 6 | Formentera Operations LLC | Austin, TX 78701 | Oil & Gas Operator | May 2024 |
| 7 | Fortay Inc. | Sunray, TX 79086 | Oil & Gas Operator | May 2024 |
| 8 | Fortune Natural Resources Corp. | Houston, TX 77067 | Oil & Gas Operator | Dec 2003 |
| 9 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | May 2024 |
| 10 | Four Star Oil & Gas Company | Houston, TX 77252 | Oil & Gas Operator | Dec 2023 |
| 11 | Four Starr Energy, Inc. | Dallas, TX 75243 | Gas Operator | May 2016 |
| 12 | Fremont Exploration, Inc. | Oklahoma City, OK 73156 | Oil & Gas Operator | Nov 2014 |
| 13 | Fuller Operating Company | Lubbock, TX 79408 | Oil & Gas Operator | Mar 2008 |