| 18401 | M7 Resources LLC | Santa Fe, NM 87505 | Oil Operator | Oct 2025 |
| 18402 | Ma-Si, Inc. | | Oil & Gas Operator | May 1998 |
| 18403 | Mabrey Bruce R | Okmulgee, OK 74447 | Gas Operator | Dec 2015 |
| 18404 | Mac 5 Operating, LLC | Pampa, TX 79065 | Oil & Gas Operator | Feb 2021 |
| 18405 | Mac Engineering & Operating Co | | Oil & Gas Operator | May 2005 |
| 18406 | Mac Mar Inc | Blairsville, PA 15717-7646 | Oil & Gas Operator | Dec 2025 |
| 18407 | Mac Oil Field Service Inc | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2024 |
| 18408 | Mac Operating | Graham, TX 76450 | Oil & Gas Operator | Jun 2023 |
| 18409 | Macanudo Energy Inc | Sapulpa, OK 74066 | Gas Operator | Jan 2007 |
| 18410 | Mace, T. A. | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2008 |
| 18411 | Macfarlan Oil And Gas, LLC | Ellenboro, WV 26346-0058 | Oil & Gas Operator | Dec 2021 |
| 18412 | Mach Joe Inspection Inc | Tulsa, OK 74145-9313 | Oil & Gas Operator | May 2005 |
| 18413 | Mach Petroleum, Inc. | Tulsa, OK 74153 | Oil & Gas Operator | Nov 2014 |
| 18414 | Macha Enterprises, Inc. | Wichita Falls, TX 76309 | Oil Operator | Feb 2026 |
| 18415 | Machii-Ross Petroleum Co | | Oil & Gas Operator | Apr 2014 |
| 18416 | Machin & Associates, Inc. | Longview, TX 75606 | Oil & Gas Operator | Feb 2026 |
| 18417 | Macina, P.T. | Shamrock, TX 79079 | Gas Operator | Feb 2026 |
| 18418 | Mack Energy Co. | Duncan, OK 73534 | Oil & Gas Operator | Dec 2025 |
| 18419 | Mack Energy Comp | | Oil & Gas Operator | Nov 1994 |
| 18420 | Mack Energy Corporation | Artesia, NM 88211 | Oil & Gas Operator | Dec 2025 |
| 18421 | Mack Oil Company | Duncan, OK 73534 | Oil & Gas Operator | Nov 2000 |
| 18422 | Mack Oil Corp | | Oil Operator | Nov 1998 |
| 18423 | Mack Oil Corp And Delta Oil Co Inc Great Lakes Nia | | Oil Operator | Feb 1986 |
| 18424 | Mack Oil Corp And Neyer Oil Inc | | Oil Operator | May 1988 |
| 18425 | Mackellar Inc | Oklahoma City, OK 73116-7101 | Oil & Gas Operator | Dec 2025 |
| 18426 | Mackenco Inc | Columbus, OH 43235 | Oil & Gas Operator | Dec 2020 |
| 18427 | Mackey Consulting & Leasing LLC | Cleveland, OK 74020 | Oil & Gas Operator | Nov 2025 |
| 18428 | Mackinaw Two, LLC | | Oil & Gas Operator | May 2020 |
| 18429 | Maclane Gas Company L.P. | Corpus Chrsti, TX 78478 | Oil & Gas Operator | Mar 1994 |
| 18430 | Macmart Inc | Wynnewood, OK 73098 | Oil & Gas Operator | Jan 2016 |
| 18431 | Macnichols, Jennifer | Akron, NY 14001 | Gas Operator | Dec 2024 |
| 18432 | Maco Incorporate | | Oil Operator | Jun 1984 |
| 18433 | Macpherson Oil Company LLC | | Oil & Gas Operator | Nov 2025 |
| 18434 | Macpherson Operating Company L.P. | | Oil & Gas Operator | Dec 2025 |
| 18435 | Macro Oil Company | Bartlesville, OK 74006 | Oil Operator | Aug 1999 |
| 18436 | Macum Energy Inc | Billings, MT 59104 | Oil & Gas Operator | Aug 2021 |
| 18437 | Mad Dog Oil Co. | | Oil Operator | Mar 2016 |
| 18438 | Mad Operators LLC | | Oil & Gas Operator | Sep 2025 |
| 18439 | Madco Energy Corp | Logan, OH 43138 | Oil & Gas Operator | Dec 1987 |
| 18440 | Madden Ventures | Mundelein, IL 60060 | Oil & Gas Operator | Dec 2008 |
| 18441 | Maddox Energy Corp | Dallas, TX BAD ADDR | Oil & Gas Operator | Jul 1995 |
| 18442 | Maddox Oil & Gas | | Gas Operator | Jun 1982 |
| 18443 | Maddox Oil & Gas, Inc. | | Oil Operator | Apr 1983 |
| 18444 | Maddox Operating | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 18445 | Maddux Oil & Gas | Strawn, TX 76475 | Oil & Gas Operator | Feb 2026 |
| 18446 | Maddux, Elizabeth H. | San Antonio, TX 78217 | Oil & Gas Operator | Nov 1995 |
| 18447 | Madera, R. F. | Palm Desert, CA 92210 | Oil & Gas Operator | Sep 2000 |
| 18448 | Madison And Wright LLC | The Colony, TX 75056 | Oil & Gas Operator | Feb 2026 |
| 18449 | Madison Brothers Investment, LLC | Brownsville, KY 42210 | Oil & Gas Operator | Dec 2023 |
| 18450 | Madison Mark T | Marienville, PA 16239-6029 | Oil & Gas Operator | Dec 2012 |
| 18451 | Madison Oil Co.-Halbouty, M. T. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1998 |
| 18452 | Madison Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1998 |
| 18453 | Madtick Dev Corp | Punxsutawney, PA 15767-0140 | Oil & Gas Operator | Dec 2024 |
| 18454 | Mae Gas Co. | Barboursville, WV 25504-0000 | Gas Operator | Nov 1997 |
| 18455 | Maersk Energy Inc. | Houston, TX 77042 | Oil & Gas Operator | Oct 1994 |
| 18456 | Maertins Production, LLC | Queen City, TX 75572 | Oil Operator | Feb 2026 |
| 18457 | Magaw & Zimmer | Perry, OK 73077-1055 | Oil & Gas Operator | Aug 2013 |
| 18458 | Magellan E&P Holdings, Inc. | Houston, TX 77056 | Oil & Gas Operator | Jun 2021 |
| 18459 | Magellan Exploration Co LTD | Bethany, OK 73008-0909 | Oil & Gas Operator | Jun 2014 |
| 18460 | Maggard Joe | Mannford, OK 74044 | Oil & Gas Operator | May 2023 |
| 18461 | Maggard Oil Co Inc | Manford, OK 74044 | Oil & Gas Operator | Sep 1997 |
| 18462 | Maggard Supply & Oil Company | Mannford, OK 74044-1407 | Oil & Gas Operator | Nov 2014 |
| 18463 | Maggard VIrginia J | Mannford, OK 74044-3027 | Oil Operator | Nov 2025 |
| 18464 | Maggert Energy Corp. | Spring, TX 77387 | Gas Operator | Jun 1998 |
| 18465 | Magic Circle Energy | Oklahoma City, OK 73185 | Oil & Gas Operator | Dec 1983 |
| 18466 | Magic City Oil & Gas | Amarillo, TX 79109 | Oil & Gas Operator | Feb 2026 |
| 18467 | Magic Investments LLC | Edmond, OK 73013 | Oil & Gas Operator | Nov 2025 |
| 18468 | Magic Oil & Gas Inc. | Houston, TX 77079 | Oil & Gas Operator | Jan 2001 |
| 18469 | Magma Resources LLC | Paoli, OK 73074 | Oil & Gas Operator | Apr 2025 |
| 18470 | Magna Diversified Group, Inc. | Jacksonville, TX 75766 | Oil & Gas Operator | Oct 2013 |
| 18471 | Magna Oil & Gas Corporation | Irving, TX 75017 | Oil & Gas Operator | Feb 2016 |
| 18472 | Magna Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 18473 | Magnatex Corp | Midland, TX 79702-1311 | Oil & Gas Operator | Feb 1995 |
| 18474 | Magnatex Petrole | | Oil Operator | Jun 1994 |
| 18475 | Magnatex Petroleum | | Oil Operator | Apr 1993 |
| 18476 | Magness Petroleum Company | | Oil & Gas Operator | Dec 1994 |
| 18477 | Magnet Oil LP | Bronte, TX 76933 | Oil & Gas Operator | Feb 2026 |
| 18478 | Magnolia Oil & Gas Operating LLC | Houston, TX 77046 | Oil & Gas Operator | Feb 2026 |
| 18479 | Magnolia Petroleum Inc | Tulsa, OK 74106-2433 | Oil Operator | Jun 2018 |
| 18480 | Magnolia Production Co | Atlanta, TX 75551 | Oil & Gas Operator | Feb 2026 |
| 18481 | Magnolia Production Company LLC | | Oil & Gas Operator | Nov 2024 |
| 18482 | Magnum DRLG Of Ohio, Inc | Ashland, KY 41102 | Oil & Gas Operator | Dec 2023 |
| 18483 | Magnum Energy Inc | Norman, OK 73072-2403 | Oil & Gas Operator | Dec 2025 |
| 18484 | Magnum Engineering Company | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Feb 2026 |
| 18485 | Magnum Exploration Kansas, LLC | Lipan, TX 76462 | Oil Operator | Oct 2016 |
| 18486 | Magnum Gas Pipeline, L.L.C. | | Oil Operator | Dec 2024 |
| 18487 | Magnum Hunter Production, Inc. | Irving, TX 75014 | Oil & Gas Operator | Dec 2019 |
| 18488 | Magnum Hunter Resources Corporation | | Oil & Gas Operator | Nov 2019 |
| 18489 | Magnum Minerals, Inc. | | Oil & Gas Operator | May 1998 |
| 18490 | Magnum Oil & Gas | Flower Mound, TX 75028 | Oil & Gas Operator | Jul 2000 |
| 18491 | Magnum Oil, LLC | Hartford, KY 42347 | Oil Operator | Dec 2023 |
| 18492 | Magnum Oilfield Services LLC | Bakersfield, CA 93309 | Oil Operator | Feb 2026 |
| 18493 | Magnum Operating, LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Feb 2026 |
| 18494 | Magnum Petroleum, Inc. | Palm Desert, CA 92260 | Oil & Gas Operator | Nov 2013 |
| 18495 | Magnum Producing & Operating Co. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Jan 2004 |
| 18496 | Magnum Producing, LP | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Feb 2026 |
| 18497 | Magnum Production & Well Service | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 18498 | Magnusson Karl E | | Oil Operator | Apr 1987 |
| 18499 | Magpie Operating, Inc | | Oil & Gas Operator | Nov 2025 |
| 18500 | Magruder '81, LTD. | Midland, TX 79701 | Oil & Gas Operator | Jan 1995 |