| 301 | Sellmeyer Eugene | Collinsville, OK 74021 | Oil & Gas Operator | Mar 2015 |
| 302 | Serendipity Operating LLC | Sparks, NV 89436-9328 | Oil & Gas Operator | Feb 2025 |
| 303 | Service Clearing Corp | Dallas, TX 75229 | Oil & Gas Operator | May 2025 |
| 304 | Sevitski & Associates Inc | Pryor, OK 74361 | Oil & Gas Operator | Dec 2000 |
| 305 | Shamrock Well Operations LLC | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | Mar 2025 |
| 306 | Shannon Petroleum Inc | Tulsa, OK 74136-4603 | Oil & Gas Operator | Oct 2016 |
| 307 | Shertzer Charles F | Kilgore, TX 75662 | Oil Operator | Nov 2005 |
| 308 | Siosi Oil & Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2013 |
| 309 | Six "E" Trading Company | Henryetta, OK 74801 | Oil & Gas Operator | Sep 2020 |
| 310 | SM Oil & Gas Inc | Skiatook, OK 74070 | Oil & Gas Operator | Feb 2025 |
| 311 | Smith Cheryl A | Copan, OK 74022 | Oil Operator | Jul 2024 |
| 312 | Smith Petroleum LLC | Barnsdall, OK 74002-0134 | Oil Operator | Feb 2025 |
| 313 | Southern Star Central Gas Pipeline, Inc. | Owensboro, KY 42301 | Oil & Gas Operator | Feb 2025 |
| 314 | Spencer Oil Company | Borger, TX 79007 | Oil & Gas Operator | Feb 2025 |
| 315 | Spencer Oil Company LLC | Bartlesville, OK 74006 | Oil Operator | Jan 2015 |
| 316 | Staats, William N | | Oil & Gas Operator | Feb 2025 |
| 317 | Stephens, Autry C. | Midland, TX 79701 | Oil & Gas Operator | Mar 2023 |
| 318 | Stonegate Ranch LLC | Caney, KS 67333 | Oil Operator | Jan 2025 |
| 319 | Stratco, Inc. | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 320 | Superior Companies Inc | Bartlesville, OK 74003-2621 | Oil & Gas Operator | May 2013 |
| 321 | Sutton-Rhoads Exploration Inc | | Oil & Gas Operator | Aug 2005 |
| 322 | Swain Clinton Edward | Ochelata, OK 74051-2220 | Oil Operator | Feb 2025 |
| 323 | Swanson Douglas L & Sharon | Bartlesville, OK 74003-9319 | Oil Operator | Feb 2025 |
| 324 | Swenton, Michael J. | Tulsa, OK 74105 | Oil & Gas Operator | Feb 2025 |
| 325 | Tank Truck'S Inc | Sapulpa, OK 74066 | Oil Operator | Mar 2025 |
| 326 | Taylor Production Company | Collinsville, OK 74021 | Oil Operator | Nov 1998 |
| 327 | Tec Resources, L.L.C. | Tulsa, OK 74128 | Oil & Gas Operator | May 2013 |
| 328 | Terhune Harry C | Bartlesville, OK 74003 | Oil Operator | Feb 1997 |
| 329 | Terhune Opal S | Bartlesville, OK 74006-0472 | Oil Operator | Feb 2025 |
| 330 | Testco Production Company | Watonga, OK 73772-0589 | Oil & Gas Operator | Aug 2013 |
| 331 | Texocan Minerals Inc | Tulsa, OK 74147 | Oil & Gas Operator | Dec 2000 |
| 332 | The Quintin Little Company Inc | Ardmore, OK 73401 | Oil & Gas Operator | Mar 2025 |
| 333 | Thompson Felton | Dewey, OK 74029 | Oil Operator | Jul 1999 |
| 334 | Thompson Roy G | Bartlesville, OK 74006 | Oil & Gas Operator | Feb 1993 |
| 335 | TJ Oil Company | Borger, TX 79008 | Oil & Gas Operator | May 2025 |
| 336 | TKL Oil Properties Inc | Konawa, OK 74849 | Oil & Gas Operator | Dec 2024 |
| 337 | Topco Inc | Tulsa, OK 74105 | Oil & Gas Operator | Nov 2005 |
| 338 | Turner Oil Company | Yale, OK 74085-0234 | Oil & Gas Operator | Nov 2014 |
| 339 | United Energy Develop Co LTD | Bartlesville, OK 74003 | Oil Operator | Mar 2004 |
| 340 | VD Oil Company LLC | Bartlesville, OK 74003-4280 | Oil Operator | Feb 2025 |
| 341 | Vincent Production Company | | Oil & Gas Operator | Dec 2006 |
| 342 | Wadkins T Roy | Bartlesville, OK 74006 | Oil & Gas Operator | Nov 2019 |
| 343 | Wallace Sherrie D | Dewey, OK 74029 | Oil & Gas Operator | Jan 2025 |
| 344 | Walton, W. W. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 1994 |
| 345 | Watt, Larry | Copan, OK 74022 | Oil Operator | Oct 2019 |
| 346 | Watt, Larry D | | Oil Operator | Aug 2024 |
| 347 | Westamerica Corporation | Dewey, OK 74029-0040 | Oil & Gas Operator | Aug 1999 |
| 348 | WF Operating LLC | Bartlesville, OK 74003 | Oil Operator | May 2023 |
| 349 | WG Oil & Gas LLC | Okmulgee, OK 74447-7862 | Oil & Gas Operator | Dec 2022 |
| 350 | White, Wesley R | | Oil Operator | Feb 2025 |
| 351 | Wildfire Oil & Gas, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2014 |
| 352 | Williamson Gregory L | Skiatook, OK 74070-0028 | Oil & Gas Operator | Mar 2015 |
| 353 | Wolverine Petroleum Corp | Holdenville, OK 74848 | Oil & Gas Operator | Jul 1999 |
| 354 | Worstell Michael H | Collinsville, OK 74021-5918 | Oil Operator | Mar 2015 |
| 355 | Worstell Oil & Gas Company | Collinsville, OK 74021 | Oil Operator | Nov 2005 |
| 356 | Worstell Oil Co LLC | Collinsville, OK 74021-5918 | Oil Operator | Sep 2024 |
| 357 | Wroten Wiley Jr | Dallas, TX 75252 | Oil & Gas Operator | Jun 1994 |
| 358 | Zca Gas Gathering Co., Inc. | Bartlesville, OK 74003 | Oil & Gas Operator | Apr 2020 |
| 359 | Zion Energy Corporation | Peru, KS 67360 | Oil Operator | Aug 2000 |