| 4101 | Fortune Production Co. | San Angelo, TX 76906 | Oil & Gas Operator | Dec 2008 |
| 4102 | Fortune Resources LLC | Longview, TX 75604 | Oil & Gas Operator | Feb 2026 |
| 4103 | Forum Exploration Co., L.P. | Tyler, TX 75710 | Oil & Gas Operator | Apr 2010 |
| 4104 | Forza Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2026 |
| 4105 | Fossil Creek Energy Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Feb 2026 |
| 4106 | Fossil Energy Inc | Austin, TX 78746 | Oil & Gas Operator | Feb 2026 |
| 4107 | Fossil Fuels Inc. | Dallas, TX 75201 | Oil & Gas Operator | May 2000 |
| 4108 | Fossil Operating, Inc. | Dallas, TX 75238 | Oil & Gas Operator | Feb 2026 |
| 4109 | Fossil Petroleum LLC | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2026 |
| 4110 | Fossil Resources, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Oct 2017 |
| 4111 | Fossil Rock Resources, Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | May 2016 |
| 4112 | Foster Energy Company | Tilden, TX 78072 | Oil & Gas Operator | Sep 2024 |
| 4113 | Foster Petroleum Company, Inc. | Orange, TX 77632 | Oil & Gas Operator | Oct 2002 |
| 4114 | Foster Well Service, Inc. | Conroe, TX 77305 | Oil & Gas Operator | Jan 2000 |
| 4115 | Foster, Charles R. Co. | Haskell, TX 79521 | Oil & Gas Operator | Aug 2002 |
| 4116 | Foster, Randy | New Braunfels, TX 78132 | Oil & Gas Operator | Feb 2021 |
| 4117 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Feb 2026 |
| 4118 | Foundation Oil Company, Inc. | Kingwood, TX 77325 | Oil & Gas Operator | Feb 2026 |
| 4119 | Founders Oil & Gas Operating,LLC | Arlington, TX 76011 | Oil & Gas Operator | Jul 2023 |
| 4120 | Four - S Oil Company, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2008 |
| 4121 | Four Aces Company | Borger, TX 79008 | Oil & Gas Operator | Mar 1995 |
| 4122 | Four C Oil & Gas Corp. | Dallas, TX 75206 | Oil & Gas Operator | Jan 2024 |
| 4123 | Four Corners Energy, LLC | Gulf Breeze, FL 32563 | Oil & Gas Operator | Feb 2026 |
| 4124 | Four Corners Petroleum II, LLC | Denver, CO 80215 | Oil & Gas Operator | Feb 2023 |
| 4125 | Four Diamond Operating, LLC | Kilgore, TX 75662 | Oil Operator | Feb 2026 |
| 4126 | Four Forty One Oil Co. | Natalia, TX 78059 | Oil & Gas Operator | Feb 2026 |
| 4127 | Four H Oil Properties | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 4128 | Four K Production | Pampa, TX 79065 | Oil & Gas Operator | Feb 2026 |
| 4129 | Four Kin Oil Co | Muenster, TX 76252 | Oil & Gas Operator | Dec 2001 |
| 4130 | Four Seas Exploration LLC | Oklahoma City, OK 73101-1557 | Oil & Gas Operator | Dec 2019 |
| 4131 | Four Sevens Oil Co., LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2001 |
| 4132 | Four Sevens Operating Co., LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 4133 | Four Square Production, L.L.C. | Houston, TX 77079 | Oil & Gas Operator | Aug 2004 |
| 4134 | Four Star Oil & Gas Company | Houston, TX 77252 | Oil & Gas Operator | Dec 2025 |
| 4135 | Four Starr Energy, Inc. | Dallas, TX 75243 | Gas Operator | May 2016 |
| 4136 | Four Starr Production, LLC | Dallas, TX 75243 | Oil & Gas Operator | Feb 2026 |
| 4137 | Four-C Management & Industries | Rockdale, TX 76567 | Oil & Gas Operator | Aug 2008 |
| 4138 | Four-S Oil Co., LTD. | Kilgore, TX 75663 | Oil Operator | Apr 2007 |
| 4139 | Fourcooks Oil & Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 4140 | Fourpoint Energy, LLC | Denver, CO 80206 | Oil & Gas Operator | Feb 2026 |
| 4141 | Fourstar Resources LLC | Westlake, TX 76262 | Oil Operator | Dec 2025 |
| 4142 | Fourth Floor Operating LLC | Austin, TX 78746 | Oil & Gas Operator | Feb 2026 |
| 4143 | Fourway Oil Company | Longview, TX 75606 | Oil & Gas Operator | Feb 2026 |
| 4144 | Fowler Oil & Gas LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Feb 2026 |
| 4145 | Fox Oil And Gas Inc | Houston, TX 77002 | Gas Operator | Dec 2002 |
| 4146 | Fox Oil, Inc. | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 1999 |
| 4147 | Fox Operating Company | Dallas, TX 75240 | Oil & Gas Operator | Dec 2025 |
| 4148 | Fox, Hewitt B., Inc. | Corpus Chrsti, TX 78411 | Oil & Gas Operator | Feb 2026 |
| 4149 | Foxborough Energy Company, LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Feb 2026 |
| 4150 | Foxfire Productions, Inc. | Corsicana, TX 75110 | Oil Operator | Jul 2014 |
| 4151 | FP Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2008 |
| 4152 | Fraco Services, Inc. | Burkburnett, TX 76354 | Oil Operator | Feb 2026 |
| 4153 | Fran Investments, Inc. | Laredo, TX 78043 | Oil & Gas Operator | Feb 2026 |
| 4154 | Frances Oil Co. | Corsicana, TX 75110 | Oil & Gas Operator | Feb 2026 |
| 4155 | Francisco Creek Operating, Inc. | Castroville, TX 78009 | Oil Operator | Feb 2026 |
| 4156 | Frank Louis L | Kingsville, TX 78364 | Oil & Gas Operator | Aug 2003 |
| 4157 | Franklin, J.W. Oil Operator | | Oil & Gas Operator | Nov 2001 |
| 4158 | Franklin, Jack | Arlington, TX 76013 | Oil & Gas Operator | Nov 2007 |
| 4159 | Frantz Resource Management, LLC | Hartley, TX 79044 | Oil Operator | Feb 2026 |
| 4160 | Fratelli Exploration, L.P. | Bedford, TX 76095 | Oil Operator | Feb 2026 |
| 4161 | Frazier Exploration Partners,LLC | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 4162 | Frazier Resources Company | Houston, TX 77057 | Gas Operator | May 2004 |
| 4163 | Frazier, VIolet H. | Abilene, TX 79604 | Oil & Gas Operator | Apr 2014 |
| 4164 | Fred Underwood, LLC | Dallas, TX 75230 | Oil & Gas Operator | Feb 2026 |
| 4165 | Fredco | Louise, TX 77455 | Oil & Gas Operator | Feb 2026 |
| 4166 | Freddy'S Well Service, Inc. | Victoria, TX 77902 | Oil & Gas Operator | May 2025 |
| 4167 | Fredna Oil Co. | Aledo, TX 76008 | Oil & Gas Operator | Sep 2020 |
| 4168 | Fredonia Resources Inc. | Longview, TX 75606 | Oil & Gas Operator | Aug 2003 |
| 4169 | Free Rein Operating LLC | Brenham, TX 77834 | Oil & Gas Operator | Feb 2026 |
| 4170 | Freedom Energy Inc | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Feb 2026 |
| 4171 | Freedom Energy, Inc. (I) | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Jun 2003 |
| 4172 | Freedom Energy, LTD. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Jun 2011 |
| 4173 | Freeman Energy Inc. (I) | Fredericksbrg, TX 78624 | Oil & Gas Operator | Aug 1996 |
| 4174 | Freeman Expl. & Prod. Co., Inc. | Houston, TX 77279 | Oil & Gas Operator | Aug 2020 |
| 4175 | Freeman Oil Co | Midland, TX 79701 | Oil & Gas Operator | Sep 2014 |
| 4176 | Freeman, James C. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Sep 2000 |
| 4177 | Freeman, Kathleen Inc. | Midland, TX 79705 | Oil & Gas Operator | Mar 1996 |
| 4178 | Freeman, Michael | Abilene, TX 79601 | Oil & Gas Operator | Feb 2026 |
| 4179 | Freeport Oil Company | New Orleans, LA 70112 | Oil & Gas Operator | Oct 1979 |
| 4180 | Freeport-McMoran Oil & Gas LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 4181 | Freestone Resources, Inc | Dallas, TX 75201 | Oil & Gas Operator | Feb 2026 |
| 4182 | Fremont Energy, L.P. | Dallas, TX 75225 | Oil & Gas Operator | Dec 1999 |
| 4183 | Fremont Exploration, Inc. | Oklahoma City, OK 73156 | Oil & Gas Operator | Nov 2014 |
| 4184 | French Production Incorporated | Houston, TX 77086 | Oil & Gas Operator | Dec 1997 |
| 4185 | Fresno Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 4186 | Friemel & Carpenter, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2002 |
| 4187 | Friemel, Paul D. & Assoc., Inc. | Boerne, TX 78006 | Oil & Gas Operator | Mar 2007 |
| 4188 | Friendly Energy Services, Inc. | Corpus Chrsti, TX 78410 | Oil & Gas Operator | Feb 2026 |
| 4189 | Frio Engineering Inc. | Houston, TX 77066 | Oil & Gas Operator | Feb 2026 |
| 4190 | Frio Exploration Company | Pearland, TX 77588 | Oil & Gas Operator | Dec 2000 |
| 4191 | Frio Oil & Gas, LTD. | Austin, TX 78731 | Oil Operator | Feb 2026 |
| 4192 | Frio Production Co. | Alice, TX 78333 | Oil & Gas Operator | Sep 1998 |
| 4193 | Frio Resources, LLC | Houston, TX 77024 | Oil & Gas Operator | Feb 2026 |
| 4194 | Frio SWD, Inc. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | Mar 2008 |
| 4195 | Frisco Energy, L.L.C. | Tulsa, OK 74105 | Oil & Gas Operator | Nov 2025 |
| 4196 | Frisco Oil Corporation | Tyler, TX 75701 | Oil & Gas Operator | Mar 2000 |
| 4197 | Frisco Petroleum Management, LLC | Frisco, TX 75034 | Oil & Gas Operator | Sep 2021 |
| 4198 | Front Range Operating, Inc. | Corpus Chrsti, TX 78466 | Oil & Gas Operator | Feb 1999 |
| 4199 | Front Street Operating, LLC | Sourlake, TX 77659 | Oil & Gas Operator | Feb 2026 |
| 4200 | Frontier Gas Operating Corp. | Houston, TX 77002 | Oil & Gas Operator | Jul 1998 |