| 301 | Hodgden Operating Co., Inc. | Enid, OK 73702 | Oil & Gas Operator | Jan 2024 |
| 302 | Holke Dave Consulting Inc | Meridian, ID 83646-4812 | Oil & Gas Operator | Dec 2023 |
| 303 | Home-Stake Royalty Corp., The | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2014 |
| 304 | Hotulke Construction LLC | | Oil & Gas Operator | Dec 2023 |
| 305 | HP Operating LLC | | Oil Operator | Dec 2023 |
| 306 | Hughes George B | Asher, OK 74826-0165 | Oil & Gas Operator | Mar 2011 |
| 307 | Hunt Engineering Inc | Norman, OK 73069-4093 | Oil & Gas Operator | Feb 2019 |
| 308 | Hy-Carb Energy Inc | | Oil & Gas Operator | Feb 2009 |
| 309 | Inca Oil Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2009 |
| 310 | Indian Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | Apr 2024 |
| 311 | Infinity Hydrocarbons LLC | Houston, TX 77079 | Oil & Gas Operator | Aug 2022 |
| 312 | Ingram Exploration Inc | Seminole, OK 74818-1626 | Oil & Gas Operator | Jan 2024 |
| 313 | J & S Oil & Gas Inc | Asher, OK 74826 | Oil & Gas Operator | Jan 2024 |
| 314 | J & T Operating Inc | Norman, OK 73070-1736 | Oil & Gas Operator | Feb 2012 |
| 315 | J Black Productions LLC | | Oil Operator | Nov 2023 |
| 316 | J M G Vacuum Trucks Inc | Shawnee, OK 74801 | Oil Operator | Jan 2024 |
| 317 | J&R Operating | Holliday, TX 76366 | Oil & Gas Operator | Apr 2024 |
| 318 | J.R. Oil Company | Houston, TX 77007 | Oil & Gas Operator | Jul 2019 |
| 319 | Jagger Oil LLC | | Oil & Gas Operator | Dec 2023 |
| 320 | James Petroleum Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Feb 2014 |
| 321 | January Investments LLC | Norman, OK 73069-8224 | Oil & Gas Operator | Jan 2024 |
| 322 | Jay Petroleum Inc | Oklahoma City, OK 73154-0526 | Oil & Gas Operator | Mar 2019 |
| 323 | JCTJ Energy LLC | Asher, OK 74826 | Oil & Gas Operator | Jan 2024 |
| 324 | Jerico Resources LLC | Seminole, OK 74868-6538 | Oil & Gas Operator | Apr 2020 |
| 325 | Jerry Scott Drilling Company Inc | Ada, OK 74821-2419 | Oil & Gas Operator | Dec 2023 |
| 326 | Jet Oil Co12/Ofb See 18649 | | Oil & Gas Operator | Jul 2007 |
| 327 | Jetson Operating Inc | Ada, OK 74821-1526 | Oil & Gas Operator | Jan 2024 |
| 328 | Jimmy R Chatham LLC | Healdton, OK 73438-0878 | Oil & Gas Operator | Jan 2024 |
| 329 | JLR Investments Inc | Oklahoma City, OK 73151-9101 | Oil & Gas Operator | Sep 2014 |
| 330 | Jma Resources, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 2023 |
| 331 | Johnson June | Lawton, OK 73501-9624 | Oil & Gas Operator | Dec 2023 |
| 332 | Jolen Operating Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2023 |
| 333 | Jones Jr Lee R | Sedan, KS 67361 | Oil & Gas Operator | Jun 2008 |
| 334 | Jordan & Jordan Oil Company | Maud, OK 74854-0700 | Oil & Gas Operator | Jan 2024 |
| 335 | Josie Oil & Gas Inc | Seminole, OK 74818-0134 | Oil & Gas Operator | Mar 2015 |
| 336 | Jva Operating Company | Midland, TX 79710 | Oil & Gas Operator | Oct 2021 |
| 337 | Jvo Petroleum Inc | Shawnee, OK 74801 | Oil & Gas Operator | Jul 1995 |
| 338 | K Oil Company | Houston, TX 77005 | Oil & Gas Operator | Apr 2024 |
| 339 | K S Oil Company Inc | Norman, OK 73072-7480 | Oil & Gas Operator | Jan 2024 |
| 340 | K-Von Enterprises Inc | Tecumseh, OK 74873 | Oil & Gas Operator | Jan 1994 |
| 341 | Kahan And Associates, Inc | Tulsa, OK 74170 | Oil & Gas Operator | Jan 2024 |
| 342 | Kahan Louis | Tulsa, OK 74101 | Oil & Gas Operator | May 1994 |
| 343 | Kahn George Operating Co | Seminole, OK 74818 | Oil & Gas Operator | Nov 2000 |
| 344 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Apr 2024 |
| 345 | KC Resources Inc | Snowmass VLG., CO 81615 | Oil & Gas Operator | Dec 2023 |
| 346 | Kelloil Inc | Fort Worth, TX 76116-5600 | Oil & Gas Operator | Mar 2015 |
| 347 | Kelly Cook Oil LLC | | Oil & Gas Operator | Jan 2024 |
| 348 | Kepasa Corp | Oklahoma City, OK 73101-2116 | Oil & Gas Operator | Jan 2024 |
| 349 | Kerr-McGee Refining Corp | Oklahoma City, OK 73125 | Oil & Gas Operator | Jun 2007 |
| 350 | Kim Ray Oil & Gas | Ada, OK 74821-0474 | Oil & Gas Operator | Dec 2023 |
| 351 | Kingery Drilling Co., Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Jan 2024 |
| 352 | Kirkpatrick Oil Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2024 |
| 353 | Kloberdanz, Paul E. | Oklahoma City, OK 73157 | Oil & Gas Operator | Aug 2021 |
| 354 | Koby Oil Company LLC | Oklahoma City, OK 73101-1945 | Oil & Gas Operator | Jan 2024 |
| 355 | Koch Oil Company | | Oil & Gas Operator | May 2017 |
| 356 | Krumme Wesley J | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 1997 |
| 357 | KWB Oil Property Management Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2024 |
| 358 | Kybenco Disposals LLC | | Oil Operator | Sep 2022 |
| 359 | L & B Oil Company Inc | Houston, TX 77019-3115 | Oil & Gas Operator | Dec 2023 |
| 360 | Lackey WM Oil & Gas Oper Co | Shawnee, OK 74801 | Oil & Gas Operator | Jan 1994 |
| 361 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 362 | Ladder Energy Company | Tulsa, OK 74120-4281 | Oil & Gas Operator | Jan 2018 |
| 363 | Laird Anita Louise | Asher, OK 74826-3215 | Oil Operator | Jun 2018 |
| 364 | Laird Bill Oil Company | St Louis, OK 74866-0120 | Oil & Gas Operator | Jan 2024 |
| 365 | Lake Country Disposal II LLC | | Oil Operator | Jan 2024 |
| 366 | Lake Country Disposal LLC | | Oil Operator | Jan 2024 |
| 367 | Lamamco Drilling Company | Skiatook, OK 74070 | Oil & Gas Operator | Dec 2023 |
| 368 | Landmark Energy LLC | Seminole, OK 74818-1672 | Oil & Gas Operator | Jan 2024 |
| 369 | Lapetco Inc | Plano, TX 75093 | Oil & Gas Operator | Sep 2023 |
| 370 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | Apr 2024 |
| 371 | Larron Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2015 |
| 372 | Lasmo Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2011 |
| 373 | Leasehold Management Corp | Oklahoma City, OK 73109-6925 | Oil & Gas Operator | Dec 2023 |
| 374 | Leavell Resources Corporation | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 375 | Lee Energy LLC | Edmond, OK 73034-7668 | Oil Operator | Jan 2005 |
| 376 | Leigh Operating Co | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 377 | Lema Petroleum Inc | Holdenville, OK 74848-0957 | Oil & Gas Operator | Dec 2023 |
| 378 | Lewis A Hembree Production Co | Shawnee, OK 74802-1725 | Oil & Gas Operator | Dec 2023 |
| 379 | Liberty Operating Inc | Norman, OK 73069-8225 | Oil & Gas Operator | Mar 2022 |
| 380 | Likins-Foster Honolulu Corp | Foster City, CA 94404 | Oil & Gas Operator | Feb 2015 |
| 381 | Lillard Pipe & Supply Inc | Shawnee, OK 74802-0847 | Oil & Gas Operator | Nov 2014 |
| 382 | Lion Petroleum Company | Oklahoma City, OK 73120-4503 | Oil & Gas Operator | Aug 2015 |
| 383 | Little River Energy Co. | Drumright, OK 74030 | Oil & Gas Operator | Jan 2024 |
| 384 | Lobar Oil Co LLC | Oklahoma City, OK 73116-1516 | Oil & Gas Operator | Dec 2023 |
| 385 | Lre Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Nov 2016 |
| 386 | Lu-Ray Petroleum LLC | Oklahoma City, OK 73121-1607 | Oil & Gas Operator | Jan 2024 |
| 387 | LX4 LLC | | Oil Operator | Jan 2024 |
| 388 | Mac Laskey Kelly Oilfield | El Dorado, KS 67042 | Oil & Gas Operator | Jan 2024 |
| 389 | Mack Energy Co. | Duncan, OK 73534 | Oil & Gas Operator | Dec 2023 |
| 390 | Magaw & Zimmer | Perry, OK 73077-1055 | Oil & Gas Operator | Aug 2013 |
| 391 | Magic Investments LLC | Edmond, OK 73013-1688 | Oil & Gas Operator | Nov 2023 |
| 392 | Magma Resources LLC | Paoli, OK 73074-0237 | Oil & Gas Operator | Dec 2023 |
| 393 | Magnum Energy Inc | Norman, OK 73072-2403 | Oil & Gas Operator | Jan 2024 |
| 394 | Majors Gary E | Holdenville, OK 74848-9603 | Oil & Gas Operator | Nov 2023 |
| 395 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Jan 2024 |
| 396 | Marathon Oil Company | Houston, TX 77024 | Oil & Gas Operator | Feb 2024 |
| 397 | Marjo Oil Company | Lockhart, TX 78644 | Oil & Gas Operator | Oct 1999 |
| 398 | Marjo Operating Company Inc | Tulsa, OK 741010729 | Oil & Gas Operator | Dec 2023 |
| 399 | Marjo Operating Mid-Continent LLC | | Oil & Gas Operator | Jan 2024 |
| 400 | Mark A Meier Dba MSC Oil And Gas Co | Oklahoma City, OK 73154 | Oil & Gas Operator | Jan 2024 |