| 201 | Ozark Oil Corporation | Springfield, MO 65804 | Oil & Gas Operator | Oct 1992 |
| 202 | P & H Oil & Gas Inc | Stroud, OK 74079 | Oil & Gas Operator | Jun 2025 |
| 203 | Painter & McPhail | Bartlesville, OK 74006 | Oil Operator | Sep 1996 |
| 204 | Pan Petroleum MLP | Kansas City, MO 64114 | Oil & Gas Operator | Aug 1997 |
| 205 | Pan Texas Petroleum Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2003 |
| 206 | Panoak Oil & Gas Corporation | Tulsa, OK 74137 | Oil & Gas Operator | Aug 2018 |
| 207 | Parker Joe | Talala, OK 74080-3556 | Oil & Gas Operator | Dec 2012 |
| 208 | Parsons Engineering Corporation | Tulsa, OK 74137-7505 | Oil & Gas Operator | Oct 2017 |
| 209 | Patrick Exploration Company | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2011 |
| 210 | Patriot Petroleum Company | Bethany, OK 73008 | Oil & Gas Operator | Mar 2015 |
| 211 | Pearsall Jarrett | Delaware, OK 74027-1065 | Oil Operator | May 2025 |
| 212 | Pemco LLC | Skiatook, OK 74070 | Oil Operator | Apr 2025 |
| 213 | Performance Petroleum Company LLC | Barnsdall, OK 74002 | Oil & Gas Operator | May 2025 |
| 214 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 215 | Petrolanic Inc | Tulsa, OK 74105 | Oil Operator | Oct 1991 |
| 216 | Petroleum Management, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Sep 2025 |
| 217 | Petroleum Reserve Corporation | Plymouth MTNG, PA 19462 | Oil & Gas Operator | May 2008 |
| 218 | Petrolia Drilling Corporation | | Oil & Gas Operator | Jul 2003 |
| 219 | Phoenix LTD | Charlotte, NC 28231-1547 | Oil Operator | Sep 2001 |
| 220 | Pierce Oil Company | Skiatook, OK 74070 | Oil & Gas Operator | Nov 2017 |
| 221 | Plains Production Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 222 | Portfolio Oil Corporation | Oklahoma City, OK 73119 | Oil & Gas Operator | May 2013 |
| 223 | Postrock Midcontinent Production LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | May 2025 |
| 224 | Price Operating Company Inc | Nowata, OK 74048 | Oil & Gas Operator | Mar 2020 |
| 225 | Pricor-TRC Corporation | Mounds, OK 74047 | Oil & Gas Operator | May 2013 |
| 226 | Putnam Phyllis L | Bartlesville, OK 74006-7326 | Oil & Gas Operator | May 2021 |
| 227 | Quest Cherokee LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2025 |
| 228 | R C Oil Company Inc | Nowata, OK 74048-3402 | Oil Operator | Nov 2021 |
| 229 | Redbird Oil Company | Bartlesville, OK 74005-2566 | Oil & Gas Operator | Mar 2015 |
| 230 | Redbud Oil & Gas | Nowata, OK 74048-0026 | Oil & Gas Operator | Dec 2000 |
| 231 | Redhen Oil Company | Oklahoma City, OK 73135 | Oil & Gas Operator | Sep 2024 |
| 232 | Rice Oil Co | Hobbs, NM 88240 | Oil & Gas Operator | Dec 2020 |
| 233 | Richardson Oil Company | San Antonio, TX 78216 | Oil & Gas Operator | Aug 2003 |
| 234 | Riley Deborah R | Nowata, OK 74048 | Oil Operator | Jun 2025 |
| 235 | Rio VIsta Operating LLC | Eufaula, OK 74432-0789 | Gas Operator | May 2025 |
| 236 | River Rock Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2025 |
| 237 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2025 |
| 238 | Robertson Jay Estate | Tulsa, OK 74127-3029 | Oil & Gas Operator | Jul 2013 |
| 239 | Robertson Johnie J | Okmulgee, OK 74447-8765 | Oil & Gas Operator | May 2025 |
| 240 | Rockford CBM LLC | Tulsa, OK 74103-4335 | Oil & Gas Operator | Jan 2013 |
| 241 | Rocky Roads Operating LLC | Tulsa, OK 74103-4048 | Oil & Gas Operator | Jun 2025 |
| 242 | Rocky Top Energy LLC | Bartlesville, OK 74003 | Oil & Gas Operator | Sep 2024 |
| 243 | S & C Resources Inc | Cleveland, OK 74020 | Oil Operator | May 2025 |
| 244 | S & S Oil Company | Electra, TX 76360 | Oil & Gas Operator | Sep 2025 |
| 245 | Samson Oil Company | | Oil & Gas Operator | Feb 2001 |
| 246 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Sep 2025 |
| 247 | Selby Larry Monroe | Bartlesville, OK 74006 | Oil & Gas Operator | Apr 2020 |
| 248 | Sellmeyer Frank | San Rafael, CA 94901-1339 | Oil Operator | Dec 2014 |
| 249 | Seneca Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 250 | Shakespeare Oil Co Inc | Salem, IL 62881 | Oil & Gas Operator | Jun 2025 |
| 251 | Shelton Oil Company LLC | Collinsville, OK 74021-5619 | Oil Operator | May 2025 |
| 252 | Short Oil Co. | Luling, TX 78648 | Oil & Gas Operator | May 2025 |
| 253 | Slawson Exploration Company Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2025 |
| 254 | Smith Connie M & Sheryle | Chelsea, OK 74016-1959 | Oil Operator | Feb 2017 |
| 255 | Smith Jack Boyd | Elkhart, IN 46515-1968 | Oil & Gas Operator | Oct 2011 |
| 256 | Southern Star Central Gas Pipeline, Inc. | Owensboro, KY 42301 | Oil & Gas Operator | May 2025 |
| 257 | SP Energy Development Company | Seattle, WA 98101-3277 | Oil & Gas Operator | Mar 2015 |
| 258 | Sparks Greg | Afton, OK 74331 | Oil & Gas Operator | May 2025 |
| 259 | Spencer Oil Company | Borger, TX 79007 | Oil & Gas Operator | May 2025 |
| 260 | Spurgeon William Allan | Nowata, OK 74048-9713 | Oil Operator | Feb 2010 |
| 261 | Stephens, Autry C. | Midland, TX 79701 | Oil & Gas Operator | Mar 2023 |
| 262 | Sterling Properties Inc | Lawton, OK 73501-9601 | Oil Operator | Jan 2025 |
| 263 | STP Cherokee, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2014 |
| 264 | Stumpff Paul | Bartlesville, OK 74006-3426 | Oil & Gas Operator | Mar 2015 |
| 265 | Subterranean Energy, LLC | Tyler, TX 75705 | Oil & Gas Operator | Sep 2025 |
| 266 | Sunday-Smith Mary E | Mannford, OK 74044-1457 | Oil & Gas Operator | Mar 2015 |
| 267 | Superior Companies Inc | Bartlesville, OK 74003-2621 | Oil & Gas Operator | May 2013 |
| 268 | T And L Oil Inc | Tonkawa, OK 74653-4530 | Oil & Gas Operator | May 2025 |
| 269 | T Bar M Energy Resources LLC | Mounds, OK 74047 | Oil & Gas Operator | May 2025 |
| 270 | Taylor Oil Co. | Edmond, OK 73034 | Oil & Gas Operator | Apr 2025 |
| 271 | Tec Resources, L.L.C. | Tulsa, OK 74128 | Oil & Gas Operator | May 2013 |
| 272 | Topco Inc | Tulsa, OK 74105 | Oil & Gas Operator | Nov 2005 |
| 273 | Trackstar Energies LLC | Colorado Springs, CO 80919-3233 | Oil Operator | Mar 2023 |
| 274 | Twenty/Twenty Oil & Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Jun 2025 |
| 275 | Two Pines | Drumright, OK 74030-5502 | Oil & Gas Operator | Feb 2012 |
| 276 | Vector Exploration Inc | Oklahoma City, OK 73142-4430 | Oil & Gas Operator | Dec 2018 |
| 277 | Vincent Production Company | | Oil & Gas Operator | Dec 2006 |
| 278 | Wadkins T Roy | Bartlesville, OK 74006 | Oil & Gas Operator | Nov 2019 |
| 279 | Walton, W. W. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 1994 |
| 280 | Westamerica Corporation | Dewey, OK 74029-0040 | Oil & Gas Operator | Aug 1999 |
| 281 | Westend Operating LLC | Collinsville, OK 74021 | Oil Operator | May 2025 |
| 282 | WFD Oil Corporation | Edmond, OK 73012 | Oil & Gas Operator | Jun 2025 |
| 283 | White Alton L Trust | Nowata, OK 74048 | Oil & Gas Operator | Aug 2013 |
| 284 | White Eagle Oil & Gas LLC | Stillwater, OK 74074 | Oil Operator | May 2025 |
| 285 | Wise Oil & Gas Company LLC | Shawnee, OK 74801-8507 | Oil & Gas Operator | Feb 2024 |
| 286 | Woolever Stephen L | Tulsa, OK 74108-2303 | Oil Operator | Jul 2024 |
| 287 | Worstell Oil & Gas Company | Collinsville, OK 74021 | Oil Operator | Nov 2005 |
| 288 | Wyatt'S Oil Corporation | | Oil & Gas Operator | May 2025 |
| 289 | Xanadu Exploration Company | Broken Arrow, OK 74014 | Oil & Gas Operator | Jun 2025 |
| 290 | Yager Company | Hutchinson, KS 67502 | Oil & Gas Operator | Dec 2000 |
| 291 | Yarhola Production Company | Drumright, OK 74030 | Oil & Gas Operator | Jun 2025 |
| 292 | Yegen E C | Casper, WY 82604 | Oil & Gas Operator | Mar 2015 |
| 293 | Zap Oil Company | Nowata, OK 74048-2640 | Oil & Gas Operator | Nov 2005 |