| 201 | Flux Energy LLC | Spring, TX 77379 | Oil & Gas Operator | Feb 2026 |
| 202 | Flying W Resources, LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 203 | Flynn, Ben A. Trustee | Coleman, TX 76834 | Oil & Gas Operator | Jul 2001 |
| 204 | FM Production | Kilgore, TX 75662 | Oil Operator | Feb 2026 |
| 205 | FMD Oil Co. | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2020 |
| 206 | Foag, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2022 |
| 207 | Focus Energy, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Nov 2019 |
| 208 | Follett Operating Co. | Darrouzett, TX 79024 | Oil & Gas Operator | Jun 2019 |
| 209 | Foothill Energy, LLC | Spring, TX 77393 | Oil & Gas Operator | Feb 2026 |
| 210 | Foothills Texas, Inc. | Houston, TX 77269 | Oil & Gas Operator | Aug 2019 |
| 211 | Fora Company | Borger, TX 79007 | Oil & Gas Operator | Feb 2026 |
| 212 | Forbes Producing, LLC | Corpus Chrsti, TX 78410 | Oil Operator | Sep 2025 |
| 213 | Forbes, C. C. Company | Alice, TX 78333 | Oil & Gas Operator | Sep 2015 |
| 214 | Forbes, Charles C. | Hebbronville, TX 78361 | Oil & Gas Operator | Jul 2011 |
| 215 | Force 4 Energy Resources, Inc. | Austin, TX 78733 | Oil & Gas Operator | Aug 2005 |
| 216 | Force 5 Energy, LLC | Houston, TX 77090 | Oil & Gas Operator | Dec 2018 |
| 217 | Forcenergy Gas Exploration Inc. | Miami, FL 33129 | Oil & Gas Operator | Aug 1996 |
| 218 | Forcenergy Inc | Miami, FL 33129 | Oil & Gas Operator | Mar 2015 |
| 219 | Forcenergy Onshore Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2012 |
| 220 | Ford Oil Co | Bangs, TX 76823 | Oil & Gas Operator | Dec 2022 |
| 221 | Ford, Don H. & Assoc. | San Antonio, TX 78217 | Oil & Gas Operator | Feb 2026 |
| 222 | Ford, R. J. Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2026 |
| 223 | Fordyce Oil & Gas | Sullivan City, TX 78595 | Oil & Gas Operator | Jul 2022 |
| 224 | Fordyce Oil & Gas, LLC | Sullivan City, TX 78595 | Gas Operator | Feb 2026 |
| 225 | Fore Oil, LLC | Manvel, TX 77578 | Oil Operator | May 2021 |
| 226 | Foree Oil Company | Terrell, TX 75160 | Oil & Gas Operator | Feb 2026 |
| 227 | Foree, R. L. Trust "A" | Dallas, TX 75225 | Oil & Gas Operator | Dec 1999 |
| 228 | Foreland Operating, LLC | Royse City, TX 75189 | Oil & Gas Operator | Oct 2021 |
| 229 | Forest Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 230 | Forest Oil Permian Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 231 | Forestar Oil & Gas LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2016 |
| 232 | Forestar Petroleum Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2017 |
| 233 | Forge Energy Operating, LLC | San Antonio, TX 78209 | Oil & Gas Operator | Jun 2023 |
| 234 | Forge Energy, LLC | San Antonio, TX 78249 | Oil & Gas Operator | Apr 2019 |
| 235 | Forjack Operating Company | Midland, TX 79702 | Oil & Gas Operator | Sep 1994 |
| 236 | Formation Recovery LLC | Weatherford, TX 76087 | Oil & Gas Operator | Feb 2026 |
| 237 | Formation Resources LLC | Fort Worth, TX 76185 | Oil & Gas Operator | Feb 2026 |
| 238 | Formentera Operations LLC | Austin, TX 78701 | Oil & Gas Operator | Feb 2026 |
| 239 | Forney & McCombs | Houston, TX 77056 | Oil & Gas Operator | Jan 1998 |
| 240 | Forney Oil Corporation | Houston, TX 77056 | Oil & Gas Operator | Jan 1998 |
| 241 | Forrest Energy, LLC | Hattiesburg, MS 39401 | Oil & Gas Operator | Feb 1998 |
| 242 | Forrester Oil & Gas Co. | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 243 | Forrester, J. L. | Longview, TX 75606 | Oil & Gas Operator | Feb 2026 |
| 244 | Forsan Oil Company | Forsan, TX 79733 | Oil & Gas Operator | Jul 2008 |
| 245 | Forster, Fred Jr. | Midland, TX 79705 | Oil & Gas Operator | Aug 2008 |
| 246 | Fort Apache Energy, Inc. | Boerne, TX 78015 | Oil & Gas Operator | Feb 2026 |
| 247 | Fort Worth Natural Gas, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Feb 2026 |
| 248 | Fort Worth Production Co. | Fort Worth, TX 76116 | Oil & Gas Operator | Oct 1996 |
| 249 | Fortay Inc. | Sunray, TX 79086 | Oil & Gas Operator | Feb 2026 |
| 250 | Forte Energy Corporation | Dallas, TX 75205 | Oil & Gas Operator | Dec 2010 |
| 251 | Fortson Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2020 |
| 252 | Fortuna Exploration, Inc. | Abilene, TX 79602 | Oil & Gas Operator | Feb 2026 |
| 253 | Fortuna Resources Dvlpment, LLC | Houston, TX 77055 | Oil & Gas Operator | Feb 2026 |
| 254 | Fortune Energy, Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2026 |
| 255 | Fortune Natural Resources Corp. | Houston, TX 77067 | Oil & Gas Operator | Dec 2003 |
| 256 | Fortune Operating Company | Willis, TX 77378 | Oil & Gas Operator | Feb 2026 |
| 257 | Fortune Operating, Inc. | Bowling Green, KY 42104 | Oil & Gas Operator | Feb 2026 |
| 258 | Fortune Production Co. | San Angelo, TX 76906 | Oil & Gas Operator | Dec 2008 |
| 259 | Fortune Resources LLC | Longview, TX 75604 | Oil & Gas Operator | Feb 2026 |
| 260 | Forum Exploration Co., L.P. | Tyler, TX 75710 | Oil & Gas Operator | Apr 2010 |
| 261 | Forza Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2026 |
| 262 | Fossil Creek Energy Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Feb 2026 |
| 263 | Fossil Energy Inc | Austin, TX 78746 | Oil & Gas Operator | Feb 2026 |
| 264 | Fossil Fuels Inc. | Dallas, TX 75201 | Oil & Gas Operator | May 2000 |
| 265 | Fossil Operating, Inc. | Dallas, TX 75238 | Oil & Gas Operator | Feb 2026 |
| 266 | Fossil Petroleum LLC | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2026 |
| 267 | Fossil Resources, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Oct 2017 |
| 268 | Fossil Rock Resources, Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | May 2016 |
| 269 | Foster Energy Company | Tilden, TX 78072 | Oil & Gas Operator | Sep 2024 |
| 270 | Foster Petroleum Company, Inc. | Orange, TX 77632 | Oil & Gas Operator | Oct 2002 |
| 271 | Foster Well Service, Inc. | Conroe, TX 77305 | Oil & Gas Operator | Jan 2000 |
| 272 | Foster, Charles R. Co. | Haskell, TX 79521 | Oil & Gas Operator | Aug 2002 |
| 273 | Foster, Randy | New Braunfels, TX 78132 | Oil & Gas Operator | Feb 2021 |
| 274 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Feb 2026 |
| 275 | Foundation Oil Company, Inc. | Kingwood, TX 77325 | Oil & Gas Operator | Feb 2026 |
| 276 | Founders Oil & Gas Operating,LLC | Arlington, TX 76011 | Oil & Gas Operator | Jul 2023 |
| 277 | Four - S Oil Company, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2008 |
| 278 | Four Aces Company | Borger, TX 79008 | Oil & Gas Operator | Mar 1995 |
| 279 | Four C Oil & Gas Corp. | Dallas, TX 75206 | Oil & Gas Operator | Jan 2024 |
| 280 | Four Corners Energy, LLC | Gulf Breeze, FL 32563 | Oil & Gas Operator | Feb 2026 |
| 281 | Four Corners Petroleum II, LLC | Denver, CO 80215 | Oil & Gas Operator | Feb 2023 |
| 282 | Four Diamond Operating, LLC | Kilgore, TX 75662 | Oil Operator | Feb 2026 |
| 283 | Four Forty One Oil Co. | Natalia, TX 78059 | Oil & Gas Operator | Feb 2026 |
| 284 | Four H Oil Properties | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 285 | Four K Production | Pampa, TX 79065 | Oil & Gas Operator | Feb 2026 |
| 286 | Four Kin Oil Co | Muenster, TX 76252 | Oil & Gas Operator | Dec 2001 |
| 287 | Four Seas Exploration LLC | Oklahoma City, OK 73101-1557 | Oil & Gas Operator | Dec 2019 |
| 288 | Four Sevens Oil Co., LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2001 |
| 289 | Four Sevens Operating Co., LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 290 | Four Square Production, L.L.C. | Houston, TX 77079 | Oil & Gas Operator | Aug 2004 |
| 291 | Four Star Oil & Gas Company | Houston, TX 77252 | Oil & Gas Operator | Dec 2025 |
| 292 | Four Starr Energy, Inc. | Dallas, TX 75243 | Gas Operator | May 2016 |
| 293 | Four Starr Production, LLC | Dallas, TX 75243 | Oil & Gas Operator | Feb 2026 |
| 294 | Four-C Management & Industries | Rockdale, TX 76567 | Oil & Gas Operator | Aug 2008 |
| 295 | Four-S Oil Co., LTD. | Kilgore, TX 75663 | Oil Operator | Apr 2007 |
| 296 | Fourcooks Oil & Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 297 | Fourpoint Energy, LLC | Denver, CO 80206 | Oil & Gas Operator | Feb 2026 |
| 298 | Fourstar Resources LLC | Westlake, TX 76262 | Oil Operator | Dec 2025 |
| 299 | Fourth Floor Operating LLC | Austin, TX 78746 | Oil & Gas Operator | Feb 2026 |
| 300 | Fourway Oil Company | Longview, TX 75606 | Oil & Gas Operator | Feb 2026 |