| 301 | Stephens, Autry C. | Midland, TX 79701 | Oil & Gas Operator | Mar 2023 |
| 302 | Stetson Petroleum Corp. | Rollins, MT 59931 | Oil & Gas Operator | Sep 2026 |
| 303 | Stickney Oil & Gas, Inc. | Midland, TX 79704 | Oil & Gas Operator | Nov 2014 |
| 304 | Stickney, F. C., Inc. | Midland, TX 79704 | Oil & Gas Operator | Oct 1998 |
| 305 | Strand Energy, Inc. (I) | Houston, TX 77002 | Oil & Gas Operator | Sep 1996 |
| 306 | Strand Energy, L.C. | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 307 | Surge Solutions, Inc. | Bandera, TX 78003 | Oil & Gas Operator | Sep 2026 |
| 308 | T.O.I. | Midland, TX 79710 | Oil & Gas Operator | Mar 2001 |
| 309 | Tall Dune Resources, LLC | Houston, TX 77269 | Oil & Gas Operator | Sep 2026 |
| 310 | Talus Inc | Graham, TX 76450-1210 | Oil & Gas Operator | Feb 2017 |
| 311 | Tamarack Petroleum Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 312 | Targa Midstream Services LLC | Tulsa, OK 74103 | Oil Operator | Mar 2023 |
| 313 | Taurus Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Sep 2026 |
| 314 | TDX Energy, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 315 | Tempo Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 316 | Texaco E & P Inc. | Houston, TX 77099 | Oil & Gas Operator | Sep 2026 |
| 317 | The Quintin Little Company Inc | Ardmore, OK 73401 | Oil & Gas Operator | Jun 2026 |
| 318 | Thompson, J. Cleo | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |
| 319 | Three Rivers Operating Co LLC | Austin, TX 78735 | Oil & Gas Operator | Mar 2017 |
| 320 | Threshold Development Company | Fort Worth, TX 76109 | Oil & Gas Operator | Aug 2016 |
| 321 | Tipperary Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2014 |
| 322 | Topat Oil Corporation | Midland, TX 79701 | Oil & Gas Operator | Sep 2017 |
| 323 | Tpet, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Mar 2008 |
| 324 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Sep 2026 |
| 325 | Trigeo Energy, LLC | Addison, TX 75001 | Oil & Gas Operator | Sep 2026 |
| 326 | Trio Consulting & Management,LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2026 |
| 327 | Trio Operating Company, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2006 |
| 328 | Tucker Drilling Company, Inc. | San Angelo, TX 76903 | Oil & Gas Operator | Jul 1996 |
| 329 | Turner, D. Ann Garrett, Est. Of | Big Spring, TX 79721 | Oil & Gas Operator | Jan 1999 |
| 330 | Tuthill & Barbee | Amarillo, TX 79101 | Oil & Gas Operator | Nov 1994 |
| 331 | TXP, Incorporated | San Angelo, TX 76906 | Oil & Gas Operator | Sep 2026 |
| 332 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 333 | Union Pacific Resources Co. | Fort Worth, TX 76101 | Oil & Gas Operator | Jan 2001 |
| 334 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Sep 2026 |
| 335 | V-F Petroleum Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 336 | Vanguard Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Jan 2021 |
| 337 | Vanguard Permian, LLC | Houston, TX 77057 | Oil & Gas Operator | Nov 2018 |
| 338 | Viola Production Inc | Dallas, TX 75251 | Oil & Gas Operator | Sep 2026 |
| 339 | Virtex Operating Company, Inc. | Corpus Christ, TX 78401 | Oil & Gas Operator | Oct 2023 |
| 340 | Virtex Petroleum Company, Inc. | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Jan 2008 |
| 341 | Vision Natural Resources, LP | Midland, TX 79708 | Oil & Gas Operator | Sep 2026 |
| 342 | Vista Resources, Inc. (A) | Midland, TX 79701 | Oil & Gas Operator | Feb 2000 |
| 343 | Vital Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 344 | W & W Properties | Westbrook, TX 79565 | Oil & Gas Operator | Aug 2018 |
| 345 | Wagner & Brown, LTD. | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 346 | Walter Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 347 | Wam Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Dec 2016 |
| 348 | Wes-Tex Drilling Company | Abilene, TX 79604 | Oil & Gas Operator | Jan 2000 |
| 349 | Westco Oil Company | Ozona, TX 76943 | Oil & Gas Operator | Sep 2026 |
| 350 | Wetwick DRLG. & Prod. | Carlsbad, TX 76934 | Oil Operator | Sep 2026 |
| 351 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Sep 2026 |
| 352 | White'S Industrial Engine'S | Houston, TX 77070 | Oil & Gas Operator | Sep 2026 |
| 353 | Wigington, James Robert | Ackerly, TX 79713 | Oil & Gas Operator | Aug 2003 |
| 354 | Williams, Clayton Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | Sep 2026 |
| 355 | Williams-Cody, Inc. | Houston, TX 77060 | Oil & Gas Operator | May 1994 |
| 356 | Wilson, WM. B. Exploration Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 1996 |
| 357 | Winn Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2026 |
| 358 | Xeric Oil & Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2014 |
| 359 | Xog Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 360 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Sep 2026 |
| 361 | Zachry Oil And Gas Properties | Midland, TX 79708 | Oil & Gas Operator | Sep 2026 |