| 301 | SM Operating Company LLC | Austin, TX 78709 | Oil & Gas Operator | Sep 2026 |
| 302 | Smith Operating & Management Co. | Shreveport, LA 71161 | Oil & Gas Operator | Feb 2005 |
| 303 | SND Operating, L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2026 |
| 304 | Sonat Exploration Company -Tyler | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 305 | Southwest Operating, Inc.-Tyler | Tyler, TX 75701 | Oil & Gas Operator | Sep 2026 |
| 306 | Southwestern Energy Prod Co | Houston, TX 77032 | Oil & Gas Operator | Jun 2015 |
| 307 | Spartan Operating Company, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Feb 2013 |
| 308 | Spence, Ralph Oil Company, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jun 2023 |
| 309 | St. Mary Land & Exploration Co | Denver, CO 80201 | Oil & Gas Operator | Jun 2010 |
| 310 | Staub, Larry, Inc. | Azle, TX 76020 | Oil & Gas Operator | Sep 2026 |
| 311 | Stober Oil And Gas Services, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2026 |
| 312 | Stoner Oil | Corsicana, TX 75109 | Oil Operator | Sep 2026 |
| 313 | Stratlynn, Inc. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 314 | Stroud Petroleum, Inc. | Shreveport, LA 71162 | Oil & Gas Operator | Sep 2026 |
| 315 | Stroud Production LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 316 | Sundance Resources, Inc. | Rio VIsta, TX 76093 | Oil & Gas Operator | Mar 2012 |
| 317 | Sunland Production Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | May 2026 |
| 318 | SW Operating, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Sep 2000 |
| 319 | SWN Production Company, LLC | Spring, TX 77391 | Oil & Gas Operator | Dec 2025 |
| 320 | Tag Operating Company, Inc. | Houston, TX 77092 | Oil & Gas Operator | Sep 2026 |
| 321 | Tanos Exploration II, LLC | Tyler, TX 75701 | Oil & Gas Operator | Sep 2023 |
| 322 | TDX Energy, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 323 | Teco Operating Company | Athens, TX 75751 | Oil & Gas Operator | Jun 2001 |
| 324 | Tensas Delta Explo. Co., LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2011 |
| 325 | Texas Crude, Inc. | Houston, TX 77256 | Oil & Gas Operator | Oct 1995 |
| 326 | Texas Royalty Corp. | Austin, TX 78746 | Oil & Gas Operator | Sep 2026 |
| 327 | Texlan Oil Company, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Nov 1994 |
| 328 | Texlan Oil Company, L.C. | Tyler, TX 75711 | Oil & Gas Operator | Aug 2003 |
| 329 | TGNR East Texas II LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 330 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 331 | Tracy Production | Lindale, TX 75771 | Oil & Gas Operator | Sep 2026 |
| 332 | Triad Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Oct 2011 |
| 333 | Triple J Investments Inc | Longview, TX 75606 | Oil & Gas Operator | Feb 2023 |
| 334 | TS Oil, LLC | River Oaks, TX 76114 | Oil & Gas Operator | Sep 2026 |
| 335 | TTK Energy LLC | Kilgore, TX 75663 | Oil Operator | Sep 2026 |
| 336 | TX Lone Star Operating Co, LLC | Sulphur SPGS, TX 75483 | Oil & Gas Operator | Sep 2026 |
| 337 | Ty-Tex Exploration, Inc. | Tyler, TX 75711 | Oil Operator | Dec 2000 |
| 338 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Sep 2026 |
| 339 | Universal Resources Corp. | Salt Lake Cty, UT 84145 | Oil & Gas Operator | Jan 2000 |
| 340 | Uphill Consulting LLC | Pearland, TX 77584 | Oil & Gas Operator | Sep 2026 |
| 341 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Sep 2026 |
| 342 | Ursus Oil And Gas | Tyler, TX 75703 | Oil & Gas Operator | Sep 2026 |
| 343 | Us. Fuels, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2026 |
| 344 | Valence Operating Company | Kingwood, TX 77339 | Oil & Gas Operator | Sep 2026 |
| 345 | Vanguard Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Jan 2021 |
| 346 | Ventex Operating Corp. | Addison, TX 75001 | Oil & Gas Operator | Sep 2026 |
| 347 | Vintage Petroleum, Inc. | Houston, TX 77046 | Oil & Gas Operator | Apr 2026 |
| 348 | Vintage Petroleum, LLC | Houston, TX 77210 | Oil & Gas Operator | Dec 2019 |
| 349 | Viola Production Inc | Dallas, TX 75251 | Oil & Gas Operator | Sep 2026 |
| 350 | Wagner & Brown, LTD. | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 351 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2026 |
| 352 | Wagner, Duer & Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 1999 |
| 353 | Walsh Resources, Inc. | Tyler, TX 75703 | Oil & Gas Operator | Sep 2026 |
| 354 | Weatherly Oil & Gas, LLC | Dallas, TX 75206 | Oil & Gas Operator | Sep 2026 |
| 355 | West Mountain Operating Co, Inc. | Longview, TX 75604 | Oil & Gas Operator | Feb 2019 |
| 356 | Western Energy Group, LLC | Leander, TX 78641 | Oil & Gas Operator | Sep 2026 |
| 357 | White Oak Production Company | Conway, AR 72034 | Oil & Gas Operator | Sep 2005 |
| 358 | Wilco Properties, Inc. | Dallas, TX 75205 | Oil & Gas Operator | Jan 2004 |
| 359 | Will-Drill Operating, L.L.C. | Shreveport, LA 71105 | Oil & Gas Operator | Sep 2026 |
| 360 | Will-Drill Production Co., Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Sep 2026 |
| 361 | Wilson Hydrocarbon Inc. | Houston, TX 77066 | Oil & Gas Operator | Sep 2026 |
| 362 | Wilson Operating Service Inc | Brownfield, TX 79316 | Oil & Gas Operator | Aug 2003 |
| 363 | Wilson, Don H., Inc. | Elkhart, TX 75839 | Oil & Gas Operator | May 2019 |
| 364 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
| 365 | Winn Exploration Co., Inc. | Corpus Christ, TX 78401 | Oil & Gas Operator | Sep 2026 |
| 366 | Winston Land & Cattle Co., Inc. | Lufkin, TX 75901 | Oil & Gas Operator | Feb 2001 |
| 367 | Winston Land & Cattle I, LTD. | Lufkin, TX 75902 | Oil & Gas Operator | Nov 2014 |
| 368 | Wisenbaker Production Company | Tyler, TX 75702 | Oil & Gas Operator | Oct 2011 |
| 369 | WJW Operating Co.,LLC | Austin, TX 78738 | Oil & Gas Operator | May 2002 |
| 370 | Wmo Oil, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2026 |
| 371 | Xta Resources LLC | Del Valle, TX 78617 | Oil & Gas Operator | Sep 2026 |
| 372 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Sep 2026 |
| 373 | Yarborough, W. B. | Midland, TX 79701 | Oil & Gas Operator | Nov 1995 |