| 1 | Fairways Exploration & Production, LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2025 |
| 2 | Faith Drilling, Inc. | | Gas Operator | Sep 1999 |
| 3 | FH Petroleum Corp. | Billings, MT 59103 | Oil & Gas Operator | Oct 2025 |
| 4 | Fidelity Exploration & Production Company | Denver, CO 80203 | Oil & Gas Operator | Nov 2025 |
| 5 | Five-Jab, Inc. | Tomball, TX 77377 | Oil & Gas Operator | Dec 2025 |
| 6 | Florentine Exploration & Production, Inc. | | Oil Operator | Mar 1997 |
| 7 | Flying J Oil & Gas Inc | North Salt Lake, UT 84054 | Oil & Gas Operator | Dec 2009 |
| 8 | Forcenergy Inc | Miami, FL 33129 | Oil & Gas Operator | Mar 2015 |
| 9 | Forcenergy Onshore Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2012 |
| 10 | Forest Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 11 | Forza Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2025 |
| 12 | Foster Energy Group, LLC | Wolfforth, TX 79382 | Oil & Gas Operator | Nov 2025 |
| 13 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Dec 2025 |
| 14 | Fulton Fuel Company | Shelby, MT 59474 | Oil & Gas Operator | Sep 2025 |
| 15 | Fulton Producing Co. | Shelby, MT 59474-0603 | Oil & Gas Operator | Feb 2005 |
| 16 | Fulton, William M. | Shelby, MT 59474 | Oil & Gas Operator | Feb 2005 |
| 17 | FX Drilling Company, Inc. | Cut Bank, MT 59427 | Oil & Gas Operator | Nov 2025 |