| 19401 | Mo-Kan Oil Group | St. Louis, MO 63131 | Oil Operator | Sep 2001 |
| 19402 | Mo-Ky | | Oil Operator | Dec 1982 |
| 19403 | Moabb Oil Corp | | Oil & Gas Operator | Apr 1998 |
| 19404 | Mob Corp | Waynesburg, PA 15370-2036 | Gas Operator | Dec 2007 |
| 19405 | Mobay Storage Hub LLC | | Gas Operator | Oct 2008 |
| 19406 | Mobeetie Resource Dev LLC | Perryton, TX 79070 | Oil & Gas Operator | Jul 2025 |
| 19407 | Mobil E&P N.A.-Pel-Tex | | Oil & Gas Operator | Dec 1993 |
| 19408 | Mobil E&P N.A.-WM Scully Et Al | | Oil & Gas Operator | Dec 1993 |
| 19409 | Mobil E&P North America Inc. | | Oil & Gas Operator | Jan 1994 |
| 19410 | Mobil Exp & Prod Us Inc | Houston, TX 77060-1991 | Oil & Gas Operator | May 2001 |
| 19411 | Mobil Expl & Producing North America Inc | | Oil & Gas Operator | Nov 1986 |
| 19412 | Mobil Explor & Prod | Cortez, CO 81321 | Oil & Gas Operator | May 2001 |
| 19413 | Mobil Oil Corpor | | Oil & Gas Operator | Dec 1996 |
| 19414 | Mobil Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2016 |
| 19415 | Mobil Oil E & P Southeast Inc | | Oil & Gas Operator | Sep 2013 |
| 19416 | Mobil Oil E&P Se Inc - Pel-Tex | | Oil & Gas Operator | Dec 2005 |
| 19417 | Mobil Oil Expl & Prod S E | | Oil & Gas Operator | Dec 1979 |
| 19418 | Mobil Oil Exploration & Producing Southeast, Inc. | | Oil & Gas Operator | Mar 2025 |
| 19419 | Mobil Oil Exploration & Production North America Inc. | | Oil & Gas Operator | Dec 1996 |
| 19420 | Mobil Petro Vac, Inc. | Duncan, OK 73533 | Oil & Gas Operator | Jul 2025 |
| 19421 | Mobil Producing Texas & New Mexico | Denver City, TX 79323 | Oil & Gas Operator | Jun 2005 |
| 19422 | Mobil Producing TX. & N.M. Inc. | Spring, TX 77389 | Oil & Gas Operator | Jul 2025 |
| 19423 | Mobile Gulf, Inc. | | Oil & Gas Operator | Aug 1985 |
| 19424 | Mobile Petrovac, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Jul 2025 |
| 19425 | Mobile Production Systems, Inc. | Austin, TX 78711 | Oil & Gas Operator | Feb 1995 |
| 19426 | Mobley & Davis | | Oil & Gas Operator | Oct 1986 |
| 19427 | Mobley & McCain | | Oil & Gas Operator | Nov 1979 |
| 19428 | Mobley & McCain, Et Al | | Oil & Gas Operator | Jul 1986 |
| 19429 | Mobley Oil Company, Inc. | | Oil & Gas Operator | Feb 1990 |
| 19430 | Mobley Valve Service, Inc. | | Oil & Gas Operator | Nov 2006 |
| 19431 | Mobpar, Inc. | Houston, TX 77219 | Oil & Gas Operator | Jul 2025 |
| 19432 | Mobreal Oil Inc | Wilmington, DE 19808 | Oil & Gas Operator | Dec 1989 |
| 19433 | Mockingbird Oil, Inc. (I) | Spring, TX 77389 | Oil & Gas Operator | Jul 2025 |
| 19434 | Moco Oil Inc | | Oil Operator | May 1984 |
| 19435 | Moco Operating Company | | Oil & Gas Operator | Mar 2002 |
| 19436 | Mode Oil & Gasdev LTD12/21/Ofb 9-98 | | Oil & Gas Operator | May 2013 |
| 19437 | Modena Operating LLC | Houston, TX 77057 | Oil & Gas Operator | Jul 2025 |
| 19438 | Modern Exploration, Inc. | Sherman, TX 75090 | Oil & Gas Operator | Jul 2025 |
| 19439 | Modus Inc. | | Oil & Gas Operator | May 2025 |
| 19440 | Moenning, Vernie | Electra, TX 76360 | Oil & Gas Operator | Jul 2025 |
| 19441 | Moff Oil Company | Pratt, KS 67124 | Gas Operator | Apr 1988 |
| 19442 | Moffitt W G Trust | Fort Gibson, OK 74434-4258 | Gas Operator | Nov 2019 |
| 19443 | Mogo Reagan, LLC | Cut Bank, MT 59427 | Oil & Gas Operator | May 2025 |
| 19444 | Mogul Energy Corp | Los Angeles, CA 90024 | Oil & Gas Operator | Jan 2001 |
| 19445 | Mogul Energy International, Inc. | Houston, TX 77042 | Oil & Gas Operator | Oct 2017 |
| 19446 | Mogul Operating LLC | St Petersburg, FL 33706 | Oil Operator | Jul 2025 |
| 19447 | Mogul Resources, LLC | Cisco, TX 76437 | Oil & Gas Operator | Jul 2025 |
| 19448 | Mohawk Operating LLC | Oklahoma City, OK 73173-8907 | Gas Operator | Feb 2004 |
| 19449 | Mohawk Petroleum | | Oil & Gas Operator | Jan 1995 |
| 19450 | Mohican Exploration, LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2024 |
| 19451 | Mohican Oil & Gas, L.L.C. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Apr 2013 |
| 19452 | Mohican Operating, L.L.C. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2021 |
| 19453 | Mohr, Steve | Maize, KS 67101 | Oil Operator | Aug 2022 |
| 19454 | Mojac Energy Corp. | Houston, TX 77056 | Oil & Gas Operator | Dec 1997 |
| 19455 | Mojave Operating Company | Midland, TX 79702 | Oil & Gas Operator | Nov 2002 |
| 19456 | Mojave Resources, LLC | New Braunfels, TX 78132 | Oil Operator | Jul 2025 |
| 19457 | Mokan Capital, LLC | Spicewood, TX 78669 | Oil Operator | Jul 2025 |
| 19458 | Molder, Tom | Imperial, TX 79743 | Oil & Gas Operator | Jul 2025 |
| 19459 | Mole Hole Prod. | Bridgeport, TX 76426 | Oil Operator | Jul 2025 |
| 19460 | Mole Operating Co., Inc. | | Oil & Gas Operator | Oct 1983 |
| 19461 | Moleco, LLC | Santa Anna, TX 76878 | Oil Operator | Jul 2025 |
| 19462 | Moleo Gas Corp. | San Angelo, TX 76902 | Oil & Gas Operator | Apr 2018 |
| 19463 | Molitor Oil, Inc. | Wichita, KS 67205 | Oil & Gas Operator | Mar 2025 |
| 19464 | Moller, Herbert T. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 2003 |
| 19465 | Mollett Oil Productions, LLC | Thelma, KY 41260 | Oil Operator | Dec 2020 |
| 19466 | Molly Oil & Gas, LLC | Dallas, TX 75209 | Oil & Gas Operator | Jul 2025 |
| 19467 | Molopo Energy Texas, LLC | Canada, 00100 | Oil & Gas Operator | Jan 2015 |
| 19468 | Molsdorf Ag LLC | McAllen, TX 78503 | Oil Operator | Sep 2013 |
| 19469 | Molz Oil Company | Kiowa, KS 67070 | Oil & Gas Operator | May 2025 |
| 19470 | Momentum Energy Corporation | Austin, TX 78746 | Oil & Gas Operator | Jul 2025 |
| 19471 | Momentum Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | Feb 2004 |
| 19472 | Momentum Oil & Gas, LLC | The Woodlands, TX 77382 | Oil & Gas Operator | May 2015 |
| 19473 | Momentum Oil Company | Albany, TX 76430 | Oil & Gas Operator | May 2003 |
| 19474 | Momentum Operating Co., Inc. | Albany, TX 76430 | Oil & Gas Operator | Jul 2025 |
| 19475 | Momentum Production Corp. | Baytown, TX 77521 | Oil & Gas Operator | Jul 2025 |
| 19476 | Moms Oil & Gas LLC | Nowata, OK 74048 | Oil & Gas Operator | Mar 2023 |
| 19477 | Mon Corp. | Pampa, TX 79066 | Oil & Gas Operator | Jul 2025 |
| 19478 | Mon-Oil Inc | | Oil & Gas Operator | Apr 1996 |
| 19479 | Monadnock Resources Op Co, LLC | Dallas, TX 75209 | Oil & Gas Operator | Jan 2021 |
| 19480 | Monadnock Resources, LLC | Addison, TX 75001 | Oil & Gas Operator | May 2020 |
| 19481 | Monago Operating Inc | | Oil & Gas Operator | Mar 2017 |
| 19482 | Monahan | | Oil Operator | Dec 2009 |
| 19483 | Monahan Rex | Sterling, CO 80751 | Oil & Gas Operator | Jun 2002 |
| 19484 | Monahan* Rex Family Trust | | Oil & Gas Operator | Sep 2010 |
| 19485 | Monarch Energy C | | Oil Operator | Nov 1987 |
| 19486 | Monarch Energy Company LLC | Eufaula, OK 74432 | Oil & Gas Operator | May 2025 |
| 19487 | Monarch Energy LLC | Paola, KS 66071 | Oil Operator | Mar 2025 |
| 19488 | Monarch Operating Company | Graham, TX 76450 | Oil & Gas Operator | Jun 2006 |
| 19489 | Monarch Petroleum Corporation | FT Worth, TX 76102 | Oil & Gas Operator | Dec 2019 |
| 19490 | Moncrief Oil | Casper, WY 82602 | Oil & Gas Operator | Feb 1986 |
| 19491 | Moncrief R W Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 1994 |
| 19492 | Moncrief W A Jr | Fort Worth, TX 76102 | Oil & Gas Operator | May 2025 |
| 19493 | Moncrief, C. B. | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2021 |
| 19494 | Monday Creek Resources LTD | Logan, OH 43138 | Oil Operator | Dec 2024 |
| 19495 | Mondiale Energy, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Jul 2025 |
| 19496 | Mondo Operating Company | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 19497 | Monex | | Oil Operator | Apr 1988 |
| 19498 | Monexco | Edmond, OK 73034-3776 | Oil & Gas Operator | Mar 2008 |
| 19499 | Monexco LLC | Dallas, TX 75204-2634 | Oil & Gas Operator | Apr 2025 |
| 19500 | Monexco Operating Company | Dallas, TX 75204-2634 | Oil & Gas Operator | Apr 2025 |