| 201 | Kerr-McGee Refining Corp | Oklahoma City, OK 73125 | Oil & Gas Operator | Jun 2007 |
| 202 | Keystone Oil And Gas Company LLC | Collinsville, OK 74021 | Oil & Gas Operator | Oct 2025 |
| 203 | Kingfisher Resources Inc | Clinton, OK 73601 | Oil & Gas Operator | Nov 2025 |
| 204 | Klabzuba Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2013 |
| 205 | Klo LLC | Tulsa, OK 74120-2428 | Oil & Gas Operator | Nov 2025 |
| 206 | Koch Oil Company | | Oil & Gas Operator | May 2017 |
| 207 | Koelsch Rex Or Marie | Tulsa, OK 74107-8647 | Oil & Gas Operator | Jul 2024 |
| 208 | Krumme Oil Company LLP | Bristow, OK 74010 | Oil & Gas Operator | Nov 2025 |
| 209 | L & T Disposal LLC | Wilson, OK 73463-6545 | Oil Operator | Mar 2016 |
| 210 | Lahoma Production Inc | Jenks, OK 74037 | Oil & Gas Operator | Oct 2025 |
| 211 | Lakeland Pipeline Inc | Hominy, OK 74035-1006 | Oil & Gas Operator | Jun 2023 |
| 212 | Lamamco Drilling Company | Skiatook, OK 74070 | Oil & Gas Operator | Oct 2025 |
| 213 | Lamberton W J | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2015 |
| 214 | Lance Ruffel Oil & Gas LLC | Oklahoma City, OK 73102-5632 | Oil & Gas Operator | Nov 2025 |
| 215 | Lapetco Inc | Plano, TX 75093 | Oil & Gas Operator | Aug 2024 |
| 216 | Lariat Energy & Supply Co Inc | Hulbert, OK 74441 | Oil & Gas Operator | Jun 2025 |
| 217 | Lawrence James Oil Prop Inc | Catoosa, OK 74015 | Oil & Gas Operator | Feb 2012 |
| 218 | Ldo LLC | Skiatook, OK 74070 | Oil Operator | Sep 2025 |
| 219 | Le Norman Energy Corporation | Duncan, OK 73534 | Oil & Gas Operator | Nov 2014 |
| 220 | Leg Up Operating Company LLC | Tulsa, OK 74135 | Oil Operator | Oct 2025 |
| 221 | Lewis A. Hembree Production Company | Shawnee, OK 74801 | Oil & Gas Operator | Oct 2025 |
| 222 | Lewis Oil And Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Jun 2025 |
| 223 | Lewis Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jul 1995 |
| 224 | Liberty Operating Inc | Norman, OK 73069-8225 | Oil & Gas Operator | Dec 2024 |
| 225 | Loving Company (The) | Broken Arrow, OK 74014-0001 | Oil & Gas Operator | May 2013 |
| 226 | Lowe Kenneth | Jennings, OK 74038 | Oil & Gas Operator | Sep 2025 |
| 227 | Luther Oil Inc | Cameron Park, CA 95682-8865 | Oil & Gas Operator | Apr 2020 |
| 228 | M & T Production Company LLC | Tulsa, OK 74132-3742 | Oil Operator | Apr 2011 |
| 229 | Maggard Joe | Mannford, OK 74044 | Oil & Gas Operator | May 2023 |
| 230 | Maggard VIrginia J | Mannford, OK 74044-3027 | Oil Operator | Oct 2025 |
| 231 | Mantex Inc | Tulsa, OK 74114-6234 | Oil & Gas Operator | Mar 2015 |
| 232 | Mark Petroleum Inc | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2018 |
| 233 | Mason, Tommy L | | Oil & Gas Operator | May 2013 |
| 234 | Matherly Elaine | Bristow, OK 74010-9536 | Oil Operator | Mar 2015 |
| 235 | Mayabb Oil Company Inc | Tulsa, OK 74105-5158 | Oil & Gas Operator | Oct 2025 |
| 236 | Mayhar N D | Eufaula, OK 74432 | Oil Operator | Apr 2015 |
| 237 | McChesney Michael & Ayo Joseph R | Pinedale, WY 82941-1282 | Oil Operator | Nov 2019 |
| 238 | McCutchin Alma Estate | Dallas, TX 75380 | Oil & Gas Operator | May 2013 |
| 239 | McGinley Jr, John R | | Gas Operator | Nov 1998 |
| 240 | McGonigal Dan L | Skiatook, OK 74070 | Oil & Gas Operator | Sep 2024 |
| 241 | McGonigal Donald T | Tulsa, OK 74114-2145 | Oil & Gas Operator | Jul 2004 |
| 242 | McGonigal Ted W | Norman, OK 73072 | Oil & Gas Operator | Sep 2025 |
| 243 | Meadors Jr J W Trust | Bixby, OK 74008-0151 | Oil & Gas Operator | Aug 2013 |
| 244 | Mid-Con Energy Operating, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2025 |
| 245 | Mid-Continent Energy Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2025 |
| 246 | Midnight Energy Operating LLC | Drumright, OK 74030 | Oil Operator | Oct 2025 |
| 247 | Mikarden Energy Inc | Sapulpa, OK 74066 | Oil Operator | Oct 2025 |
| 248 | Miller-McGee Operating Inc | Stroud, OK 74079 | Oil & Gas Operator | Nov 2025 |
| 249 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
| 250 | Monexco Operating Company | Dallas, TX 75204-2634 | Oil & Gas Operator | Oct 2025 |
| 251 | Moore Lynn D | Collinsville, OK 74021 | Oil Operator | Aug 2013 |
| 252 | Moore Oil And Gas | Burleson, TX 76028 | Oil & Gas Operator | Dec 2025 |
| 253 | Morris Ed Dba Morris Operating Company | Mounds, OK 74047-4801 | Oil & Gas Operator | Oct 2025 |
| 254 | Morrison Oil Company | Bartlesville, OK 74003 | Oil Operator | Mar 2015 |
| 255 | MRD Nowata LLC | Woodstock, GA 30189 | Oil Operator | Aug 2017 |
| 256 | MSB Operating Company | Enid, OK 73703 | Oil & Gas Operator | Jan 2005 |
| 257 | Munson, David M. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2015 |
| 258 | Murphy Helen Colpitt Trust | Collinsville, OK 74021-0128 | Oil & Gas Operator | May 2002 |
| 259 | Murphy Jack L | Tulsa, OK 74104-4915 | Oil Operator | Mar 2015 |
| 260 | Nancy Oil & Gas Corp | Tulsa, OK 74101 | Oil Operator | Apr 2020 |
| 261 | Natural Gas Compression Corp | Cleveland, OK 74020 | Oil & Gas Operator | Jan 2025 |
| 262 | Natural Gas Pipeline Co Of Am LLC | Downers Grove, IL 60515-3708 | Oil & Gas Operator | Mar 2015 |
| 263 | Nbi Services, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | Dec 2025 |
| 264 | Neodyne Drilling Corporation | Tulsa, OK 74153-0326 | Oil & Gas Operator | Apr 2020 |
| 265 | Neosho Operating Services LLC | Neosho, MO 64850-0179 | Oil Operator | Mar 2017 |
| 266 | New Gulf Resources, LLC | Tulsa, OK 74133 | Oil & Gas Operator | May 2018 |
| 267 | New Lift Inc | Nowata, OK 74048-0245 | Oil & Gas Operator | Mar 2015 |
| 268 | NM&O Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2025 |
| 269 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2025 |
| 270 | Noble Energy Production Inc | Houston, TX 77067 | Oil & Gas Operator | Dec 2025 |
| 271 | Noble Resources Inc | Mannford, OK 74044 | Oil & Gas Operator | Nov 2025 |
| 272 | Northeast Shelf Energy, L.L.C. | | Oil & Gas Operator | Jun 2017 |
| 273 | O'Donnell Bill C | Tulsa, OK 74135-4241 | Oil & Gas Operator | Oct 2014 |
| 274 | O'Hern Morris D | Mounds, OK 74047-5163 | Oil & Gas Operator | Sep 2016 |
| 275 | Oakland Petroleum Oper Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 276 | Ochiltree Oil Company | Edmond, OK 73034 | Oil & Gas Operator | Apr 2020 |
| 277 | Oil Exploration Of America Inc | Sisseton, SD 57262-9503 | Oil & Gas Operator | Jun 2001 |
| 278 | Oil Patch Energy LLC | Broken Arrow, OK 74014 | Oil & Gas Operator | Oct 2025 |
| 279 | Okie Oil Inc | Sapulpa, OK 74067-0290 | Oil & Gas Operator | Mar 2011 |
| 280 | Oklahoma Rig & Salvage Inc | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2015 |
| 281 | On-Line Oil Inc | Oklahoma City, OK 73105-5208 | Oil & Gas Operator | Mar 2015 |
| 282 | Otc/Occ Not Assigned | | Oil & Gas Operator | Dec 2024 |
| 283 | Ovintiv Mid-Continent Inc. | The Woodlands, TX 77380-2764 | Oil & Gas Operator | Nov 2025 |
| 284 | P & C Oil Company | Leona, TX 75850 | Oil & Gas Operator | Oct 2025 |
| 285 | Paragon Industries Inc | Sapulpa, OK 74066-6987 | Oil Operator | Oct 2025 |
| 286 | Parish Petroleum Company | Tulsa, OK 74137 | Oil & Gas Operator | Jul 2025 |
| 287 | Park Kenneth Y | Skiatook, OK 74070-6060 | Oil & Gas Operator | Oct 2025 |
| 288 | Park William M | Sperry, OK 74073 | Oil & Gas Operator | Oct 2025 |
| 289 | Parker James A | Sand Springs, OK 74063 | Oil & Gas Operator | Oct 2025 |
| 290 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 291 | Patina Oklahoma Corp | Duncan, OK 73533-9523 | Oil & Gas Operator | Nov 2014 |
| 292 | Paystone Oil Corporation | Tulsa, OK 74105 | Oil Operator | Mar 2009 |
| 293 | Pedocs Inc | Bixby, OK 74008 | Oil & Gas Operator | Oct 2025 |
| 294 | Pemco LLC | Skiatook, OK 74070 | Oil Operator | Oct 2025 |
| 295 | Petro-Mac Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2025 |
| 296 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 297 | Petron Energy Inc | Dallas, TX 75252 | Oil & Gas Operator | Dec 2025 |
| 298 | Pillers Chris | Skiatook, OK 74070-1811 | Oil Operator | Oct 2025 |
| 299 | Pinnacle Exploration & Production Co | Kiefer, OK 74041 | Oil & Gas Operator | Oct 2025 |
| 300 | Pinnacle Operating Company LLC | Tulsa, OK 74137 | Oil & Gas Operator | Oct 2025 |