| 3901 | Flat Creek Resources, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2025 |
| 3902 | Flat Top Operating, LLC | Midland, TX 79707 | Oil & Gas Operator | Oct 2025 |
| 3903 | Flatonia Energy, LLC | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 3904 | Flavian Oil Company | Dallas, TX 75206 | Gas Operator | Jan 1997 |
| 3905 | Fletcher Operating, LLC | Fairhope, AL 36532 | Oil & Gas Operator | Oct 2025 |
| 3906 | Fletcher Petroleum Corp. | Fairhope, AL 36533 | Oil & Gas Operator | Jul 2025 |
| 3907 | Fletcher, M. D. | Pampa, TX 79065 | Oil & Gas Operator | Dec 2007 |
| 3908 | Flint Interests, LLC | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 3909 | Flint Oak Energy, LLC | Montgomery, TX 77356 | Oil & Gas Operator | Oct 2025 |
| 3910 | Flint Oil & Gas | San Angelo, TX 76904 | Oil & Gas Operator | Aug 2003 |
| 3911 | Flint Pipeline Company | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 3912 | Flint Rock Resources MGMNT, Inc. | Austin, TX 78734 | Oil & Gas Operator | Oct 2025 |
| 3913 | Flint, Billy Individual | Merkel, TX 79536 | Oil & Gas Operator | Oct 2025 |
| 3914 | Flo Petro, LLC. | Austin, TX 78746 | Oil Operator | Oct 2025 |
| 3915 | Floex Energy LLC | Tyler, TX 75701 | Oil Operator | Oct 2025 |
| 3916 | Flournoy Oil & Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 3917 | Flournoy Production Co. | Alice, TX 78333 | Oil & Gas Operator | Dec 2002 |
| 3918 | Flournoy, Russell B. | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2020 |
| 3919 | Flow Energy Inc. | Bellaire, TX 77401 | Oil & Gas Operator | Sep 1996 |
| 3920 | Flow Production Company | Midland, TX 79708 | Oil & Gas Operator | Mar 2005 |
| 3921 | Floyd Oil Co | Houston, TX 77002 | Oil & Gas Operator | Nov 1999 |
| 3922 | Floyd Operating Company | Houston, TX 77002 | Oil & Gas Operator | Jul 2004 |
| 3923 | Floyd, Timber Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 3924 | Flusche Brothers | Muenster, TX 76252 | Oil & Gas Operator | Oct 2025 |
| 3925 | Flusche Properties, L.L.C. | Electra, TX 76360 | Oil & Gas Operator | Jan 2017 |
| 3926 | Flusche Supply, Inc. | Electra, TX 76360 | Oil & Gas Operator | Aug 1994 |
| 3927 | Flusche, Herb | Wichita Falls, TX 76309 | Oil & Gas Operator | Mar 2005 |
| 3928 | Flux Energy LLC | Spring, TX 77379 | Oil & Gas Operator | Oct 2025 |
| 3929 | Flying W Resources, LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 3930 | Flynn, Ben A. Trustee | Coleman, TX 76834 | Oil & Gas Operator | Jul 2001 |
| 3931 | FMD Oil Co. | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2020 |
| 3932 | Foag, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2022 |
| 3933 | Focus Energy, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Nov 2019 |
| 3934 | Follett Operating Co. | Darrouzett, TX 79024 | Oil & Gas Operator | Jun 2019 |
| 3935 | Foothill Energy, LLC | Spring, TX 77393 | Oil & Gas Operator | Oct 2025 |
| 3936 | Foothills Texas, Inc. | Houston, TX 77269 | Oil & Gas Operator | Aug 2019 |
| 3937 | Fora Company | Borger, TX 79007 | Oil & Gas Operator | Oct 2025 |
| 3938 | Forbes Producing, LLC | Corpus Chrsti, TX 78410 | Oil Operator | Sep 2025 |
| 3939 | Forbes, C. C. Company | Alice, TX 78333 | Oil & Gas Operator | Sep 2015 |
| 3940 | Forbes, Charles C. | Hebbronville, TX 78361 | Oil & Gas Operator | Jul 2011 |
| 3941 | Force 4 Energy Resources, Inc. | Austin, TX 78733 | Oil & Gas Operator | Aug 2005 |
| 3942 | Force 5 Energy, LLC | Houston, TX 77090 | Oil & Gas Operator | Dec 2018 |
| 3943 | Forcenergy Gas Exploration Inc. | Miami, FL 33129 | Oil & Gas Operator | Aug 1996 |
| 3944 | Forcenergy Inc | Miami, FL 33129 | Oil & Gas Operator | Mar 2015 |
| 3945 | Forcenergy Onshore Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2012 |
| 3946 | Ford, Don H. & Assoc. | San Antonio, TX 78217 | Oil & Gas Operator | Oct 2025 |
| 3947 | Ford, R. J. Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Oct 2025 |
| 3948 | Fordyce Oil & Gas | Sullivan City, TX 78595 | Oil & Gas Operator | Jul 2022 |
| 3949 | Fore Oil, LLC | Manvel, TX 77578 | Oil Operator | May 2021 |
| 3950 | Foree Oil Company | Terrell, TX 75160 | Oil & Gas Operator | Oct 2025 |
| 3951 | Foree, R. L. Trust "A" | Dallas, TX 75225 | Oil & Gas Operator | Dec 1999 |
| 3952 | Foreland Operating, LLC | Royse City, TX 75189 | Oil & Gas Operator | Oct 2021 |
| 3953 | Forest Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 3954 | Forest Oil Permian Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 3955 | Forestar Oil & Gas LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2016 |
| 3956 | Forestar Petroleum Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2017 |
| 3957 | Forge Energy Operating, LLC | San Antonio, TX 78209 | Oil & Gas Operator | Jun 2023 |
| 3958 | Forge Energy, LLC | San Antonio, TX 78249 | Oil & Gas Operator | Apr 2019 |
| 3959 | Formation Recovery LLC | Weatherford, TX 76087 | Oil & Gas Operator | Oct 2025 |
| 3960 | Formation Resources LLC | Fort Worth, TX 76185 | Oil & Gas Operator | Oct 2025 |
| 3961 | Formentera Operations LLC | Austin, TX 78701 | Oil & Gas Operator | Oct 2025 |
| 3962 | Forney & McCombs | Houston, TX 77056 | Oil & Gas Operator | Jan 1998 |
| 3963 | Forney Oil Corporation | Houston, TX 77056 | Oil & Gas Operator | Jan 1998 |
| 3964 | Forrest Energy, LLC | Hattiesburg, MS 39401 | Oil & Gas Operator | Feb 1998 |
| 3965 | Forrester Oil & Gas Co. | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 3966 | Forrester, J. L. | Longview, TX 75606 | Oil & Gas Operator | Oct 2025 |
| 3967 | Forsan Oil Company | Forsan, TX 79733 | Oil & Gas Operator | Jul 2008 |
| 3968 | Forster, Fred Jr. | Midland, TX 79705 | Oil & Gas Operator | Aug 2008 |
| 3969 | Fort Apache Energy, Inc. | Boerne, TX 78015 | Oil & Gas Operator | Oct 2025 |
| 3970 | Fort Worth Natural Gas, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Oct 2025 |
| 3971 | Fort Worth Production Co. | Fort Worth, TX 76116 | Oil & Gas Operator | Oct 1996 |
| 3972 | Fortay Inc. | Sunray, TX 79086 | Oil & Gas Operator | Oct 2025 |
| 3973 | Forte Energy Corporation | Dallas, TX 75205 | Oil & Gas Operator | Dec 2010 |
| 3974 | Fortson Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2020 |
| 3975 | Fortuna Exploration, Inc. | Abilene, TX 79602 | Oil & Gas Operator | Oct 2025 |
| 3976 | Fortuna Resources Dvlpment, LLC | Houston, TX 77055 | Oil & Gas Operator | Oct 2025 |
| 3977 | Fortune Energy, Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Oct 2025 |
| 3978 | Fortune Natural Resources Corp. | Houston, TX 77067 | Oil & Gas Operator | Dec 2003 |
| 3979 | Fortune Operating Company | Willis, TX 77378 | Oil & Gas Operator | Oct 2025 |
| 3980 | Fortune Operating, Inc. | Bowling Green, KY 42104 | Oil & Gas Operator | Oct 2025 |
| 3981 | Fortune Production Co. | San Angelo, TX 76906 | Oil & Gas Operator | Dec 2008 |
| 3982 | Fortune Resources LLC | Longview, TX 75604 | Oil & Gas Operator | Oct 2025 |
| 3983 | Forum Exploration Co., L.P. | Tyler, TX 75710 | Oil & Gas Operator | Apr 2010 |
| 3984 | Forza Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2025 |
| 3985 | Fossil Creek Energy Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Oct 2025 |
| 3986 | Fossil Energy Inc | Austin, TX 78746 | Oil & Gas Operator | Oct 2025 |
| 3987 | Fossil Fuels Inc. | Dallas, TX 75201 | Oil & Gas Operator | May 2000 |
| 3988 | Fossil Operating, Inc. | Dallas, TX 75238 | Oil & Gas Operator | Oct 2025 |
| 3989 | Fossil Petroleum LLC | San Angelo, TX 76906 | Oil & Gas Operator | Oct 2025 |
| 3990 | Fossil Resources, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Oct 2017 |
| 3991 | Fossil Rock Resources, Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | May 2016 |
| 3992 | Foster Energy Company | Tilden, TX 78072 | Oil & Gas Operator | Sep 2024 |
| 3993 | Foster Well Service, Inc. | Conroe, TX 77305 | Oil & Gas Operator | Jan 2000 |
| 3994 | Foster, Charles R. Co. | Haskell, TX 79521 | Oil & Gas Operator | Aug 2002 |
| 3995 | Foster, Randy | New Braunfels, TX 78132 | Oil & Gas Operator | Feb 2021 |
| 3996 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Oct 2025 |
| 3997 | Foundation Oil Company, Inc. | Kingwood, TX 77325 | Oil & Gas Operator | Oct 2025 |
| 3998 | Founders Oil & Gas Operating,LLC | Arlington, TX 76011 | Oil & Gas Operator | Jul 2023 |
| 3999 | Four - S Oil Company, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2008 |
| 4000 | Four Aces Company | Borger, TX 79008 | Oil & Gas Operator | Mar 1995 |