| 301 | Rainbow Oil Company | | Oil & Gas Operator | Aug 1999 |
| 302 | Rambler Oil Co | Oklahoma City, OK 73154 | Oil & Gas Operator | Jan 1999 |
| 303 | Red Buck Oil Company | Copan, OK 74022-0215 | Oil Operator | Nov 2009 |
| 304 | Redbird Oil Company | Bartlesville, OK 74005-2566 | Oil & Gas Operator | Mar 2015 |
| 305 | Revocable Inter VIvos Trust Of Delapp Frankie L | Bartlesville, OK 74006-0307 | Oil & Gas Operator | Feb 2020 |
| 306 | Richardson, Bud II | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 307 | Ricks Consulting LLC | Copan, OK 74022 | Oil Operator | Dec 2025 |
| 308 | Robertson Jay Estate | Tulsa, OK 74127-3029 | Oil & Gas Operator | Jul 2013 |
| 309 | Rockford CBM LLC | Tulsa, OK 74103-4335 | Oil & Gas Operator | Jan 2013 |
| 310 | Rocky Top Energy LLC | Bartlesville, OK 74003 | Oil & Gas Operator | Sep 2025 |
| 311 | RTD Inc | Bartlesville, OK 74006 | Oil Operator | Jan 1995 |
| 312 | Ry-Co Petroleum | Wann, OK 74083 | Oil & Gas Operator | Feb 2017 |
| 313 | S & S Star Operating, LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Mar 2026 |
| 314 | Sallee Oil Corporation | Collinsville, OK 74021 | Oil & Gas Operator | Feb 2026 |
| 315 | Sand Boy Production Company | Bartlesville, OK 74003-9273 | Oil & Gas Operator | Jan 2025 |
| 316 | Sandridge Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2018 |
| 317 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Apr 2026 |
| 318 | Schiff & Jackson Oil Producers | Dallas, TX 75206 | Oil & Gas Operator | Feb 2026 |
| 319 | Scott John S | Copan, OK 74022-5904 | Oil Operator | Apr 2005 |
| 320 | Selby Larry Monroe | Bartlesville, OK 74006 | Oil & Gas Operator | Apr 2020 |
| 321 | Select Operating Company Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2014 |
| 322 | Sellmeyer Eugene | Collinsville, OK 74021 | Oil & Gas Operator | Mar 2015 |
| 323 | Serendipity Operating LLC | Sparks, NV 89436-9328 | Oil & Gas Operator | Jan 2026 |
| 324 | Service Clearing Corp | Dallas, TX 75229 | Oil & Gas Operator | Apr 2026 |
| 325 | Sevitski & Associates Inc | Pryor, OK 74361 | Oil & Gas Operator | Dec 2000 |
| 326 | Shale Properties LLC | Kingfisher, OK 73750 | Oil Operator | Aug 2023 |
| 327 | Shamrock Well Operations LLC | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | Feb 2026 |
| 328 | Shannon Petroleum Inc | Tulsa, OK 74136-4603 | Oil & Gas Operator | Oct 2016 |
| 329 | Shertzer Charles F | Kilgore, TX 75662 | Oil Operator | Nov 2005 |
| 330 | Siosi Oil & Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2013 |
| 331 | Six "E" Trading Company | Henryetta, OK 74801 | Oil & Gas Operator | Sep 2020 |
| 332 | SM Oil & Gas Inc | Skiatook, OK 74070 | Oil & Gas Operator | Feb 2026 |
| 333 | Smith Cheryl A | Copan, OK 74022 | Oil Operator | Nov 2025 |
| 334 | Smith Petroleum LLC | Barnsdall, OK 74002-0134 | Oil Operator | Feb 2026 |
| 335 | Southern Star Central Gas Pipeline Inc | Owensboro, KY 42301 | Oil & Gas Operator | Jan 2026 |
| 336 | Spencer Oil Company | Borger, TX 79007 | Oil & Gas Operator | Feb 2026 |
| 337 | Spencer Oil Company LLC | Bartlesville, OK 74006 | Oil Operator | Jan 2015 |
| 338 | Staats, William N | | Oil & Gas Operator | Jan 2026 |
| 339 | Stephens, Autry C. | Midland, TX 79701 | Oil & Gas Operator | Mar 2023 |
| 340 | Stonegate Ranch LLC | Caney, KS 67333 | Oil Operator | Dec 2025 |
| 341 | Stratco, Inc. | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 342 | Superior Companies Inc | Bartlesville, OK 74003-2621 | Oil & Gas Operator | May 2013 |
| 343 | Surge Ok Midstream LLC | Oklahoma City, OK 73114 | Oil Operator | Jun 2025 |
| 344 | Swain Clinton Edward | Ochelata, OK 74051-2220 | Oil Operator | Jan 2026 |
| 345 | Swanson Douglas L & Sharon | Bartlesville, OK 74003-9319 | Oil Operator | Feb 2026 |
| 346 | Swenton Michael J | Tulsa, OK 74105 | Oil & Gas Operator | Feb 2026 |
| 347 | Tank Truck'S Inc | Sapulpa, OK 74066 | Oil Operator | Mar 2026 |
| 348 | Taylor Production Company | Collinsville, OK 74021 | Oil Operator | Nov 1998 |
| 349 | Tec Resources LLC | Tulsa, OK 74128 | Oil & Gas Operator | May 2013 |
| 350 | Terhune Harry C | Bartlesville, OK 74003 | Oil Operator | Feb 1997 |
| 351 | Terhune Opal S | Bartlesville, OK 74006-0472 | Oil Operator | Apr 2025 |
| 352 | Testco Production Company | Watonga, OK 73772-0589 | Oil & Gas Operator | Aug 2013 |
| 353 | Texocan Minerals Inc | Tulsa, OK 74147 | Oil & Gas Operator | Dec 2000 |
| 354 | The Quintin Little Company Inc | Ardmore, OK 73401 | Oil & Gas Operator | Feb 2026 |
| 355 | Thompson Felton | Dewey, OK 74029 | Oil Operator | Jul 1999 |
| 356 | Thompson Roy G | Bartlesville, OK 74006 | Oil & Gas Operator | Feb 1993 |
| 357 | TJ Oil Company | Borger, TX 79008 | Oil & Gas Operator | Apr 2026 |
| 358 | TKL Oil Properties Inc | Konawa, OK 74849 | Oil & Gas Operator | Oct 2025 |
| 359 | Tony'S Disposal Service Inc | Yale, OK 74085 | Oil Operator | Aug 1997 |
| 360 | Tonys Crude Oil Reclaiming Plant Inc | | Oil Operator | Jan 2026 |
| 361 | Topco Inc | Tulsa, OK 74105 | Oil & Gas Operator | Nov 2005 |
| 362 | Turner Oil Company | Yale, OK 74085-0234 | Oil & Gas Operator | Nov 2014 |
| 363 | United Energy Develop Co LTD | Bartlesville, OK 74003 | Oil Operator | Mar 2004 |
| 364 | VD Oil Company LLC | Bartlesville, OK 74003-4280 | Oil Operator | Feb 2026 |
| 365 | Vincent Production Company | | Oil & Gas Operator | Dec 2006 |
| 366 | Wadkins T Roy | Bartlesville, OK 74006 | Oil & Gas Operator | Nov 2019 |
| 367 | Wallace Sherrie D | Dewey, OK 74029 | Oil & Gas Operator | Feb 2026 |
| 368 | Walton, W. W. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 1994 |
| 369 | Watt Larry | Copan, OK 74022 | Oil Operator | Oct 2019 |
| 370 | Watt, Larry D | | Oil Operator | Aug 2024 |
| 371 | Westamerica Corporation | Dewey, OK 74029-0040 | Oil & Gas Operator | Aug 1999 |
| 372 | Western Tank Trucks Inc | Hennessey, OK 73742 | Oil Operator | Jul 2011 |
| 373 | WF Operating LLC | Bartlesville, OK 74006 | Oil Operator | May 2023 |
| 374 | WG Oil & Gas LLC | Okmulgee, OK 74447-7862 | Oil & Gas Operator | Dec 2022 |
| 375 | White Operating Company | Oklahoma City, OK 73159-7136 | Oil & Gas Operator | Feb 2026 |
| 376 | White, Wesley R | | Oil Operator | Feb 2026 |
| 377 | Wildfire Oil & Gas Inc | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2014 |
| 378 | Williamson Gregory L | Skiatook, OK 74070-0028 | Oil & Gas Operator | Mar 2015 |
| 379 | Wolverine Petroleum Corp | Holdenville, OK 74848 | Oil & Gas Operator | Jul 1999 |
| 380 | Worstell Michael H | Collinsville, OK 74021-5918 | Oil Operator | Mar 2015 |
| 381 | Worstell Oil & Gas Company | Collinsville, OK 74021 | Oil Operator | Nov 2005 |
| 382 | Worstell Oil Co LLC | Collinsville, OK 74021-5918 | Oil Operator | Dec 2025 |
| 383 | Wroten Wiley Jr | Dallas, TX 75252 | Oil & Gas Operator | Jun 1994 |
| 384 | Zca Gas Gathering Co., Inc. | Bartlesville, OK 74003 | Oil & Gas Operator | Apr 2020 |
| 385 | Zion Energy Corporation | Peru, KS 67360 | Oil Operator | Aug 2000 |