| 1 | Faul Energy, Inc. | | Oil & Gas Operator | Oct 1988 |
| 2 | Fin-Oil, Inc. | | Oil & Gas Operator | Apr 1985 |
| 3 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 4 | Finaly Resources LLC | Sunset Beach, CA 90742 | Oil & Gas Operator | Oct 2025 |
| 5 | First Energy Corporation | | Oil & Gas Operator | Jun 1993 |
| 6 | First Energy Development Corp. | | Oil & Gas Operator | Sep 2008 |
| 7 | Five-Jab, Inc. | Tomball, TX 77377 | Oil & Gas Operator | Oct 2025 |
| 8 | Flash Gas & Oil Northeast, Inc | | Oil & Gas Operator | May 2007 |
| 9 | Florida Exploration Co | Aurora, CO 80014 | Oil & Gas Operator | Sep 1989 |
| 10 | Florida Gas Transmission Co. | | Oil Operator | Dec 2007 |
| 11 | Flynn Energy Corporation | Tulsa, OK 74137 | Oil & Gas Operator | Mar 1993 |
| 12 | FMP Operating Co., LTD. PTN. | | Oil & Gas Operator | Mar 1990 |
| 13 | Forman Petroleum Corporation | | Oil & Gas Operator | Aug 2001 |
| 14 | Forza Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2025 |
| 15 | Four Rivers Exploration, Inc. | | Oil & Gas Operator | Sep 2002 |
| 16 | Franks & Petrofunds, Inc. | | Oil & Gas Operator | Sep 1989 |
| 17 | Franks - Arkla | | Oil & Gas Operator | Jun 1985 |
| 18 | Franks Petroleum Inc. | | Oil & Gas Operator | Nov 1994 |
| 19 | Franks Petroleum, Inc. Et Al | | Oil & Gas Operator | Oct 1989 |
| 20 | Fred Olsen,Inc. | | Oil & Gas Operator | Jan 1981 |
| 21 | Fredria Bertrand, SR. | | Oil Operator | May 2021 |
| 22 | Freeport Oil Company | New Orleans, LA 70112 | Oil & Gas Operator | Oct 1979 |