| 19601 | Mockingbird Oil, Inc. (I) | Spring, TX 77389 | Oil & Gas Operator | Dec 2025 |
| 19602 | Moco Oil Inc | | Oil Operator | May 1984 |
| 19603 | Moco Operating Company | | Oil & Gas Operator | Mar 2002 |
| 19604 | Mode Oil & Gasdev LTD12/21/Ofb 9-98 | | Oil & Gas Operator | May 2013 |
| 19605 | Modena Operating LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2025 |
| 19606 | Modern Exploration, Inc. | Sherman, TX 75090 | Oil & Gas Operator | Dec 2025 |
| 19607 | Modus Inc. | | Oil & Gas Operator | Sep 2025 |
| 19608 | Moenning, Vernie | Electra, TX 76360 | Oil & Gas Operator | Dec 2025 |
| 19609 | Moff Oil Company | Pratt, KS 67124 | Gas Operator | Apr 1988 |
| 19610 | Moffitt W G Trust | Fort Gibson, OK 74434-4258 | Gas Operator | Nov 2019 |
| 19611 | Mog Energy LLC | Tyler, TX 75701 | Oil Operator | Dec 2025 |
| 19612 | Mogo Operating, LLC | Norman, OK 73069 | Oil & Gas Operator | Oct 2025 |
| 19613 | Mogo Reagan, LLC | Cut Bank, MT 59427 | Oil & Gas Operator | Sep 2025 |
| 19614 | Mogul Energy Corp | Los Angeles, CA 90024 | Oil & Gas Operator | Jan 2001 |
| 19615 | Mogul Energy International, Inc. | Houston, TX 77042 | Oil & Gas Operator | Oct 2017 |
| 19616 | Mogul Operating LLC | St Petersburg, FL 33706 | Oil Operator | Dec 2025 |
| 19617 | Mogul Resources, LLC | Cisco, TX 76437 | Oil & Gas Operator | Dec 2025 |
| 19618 | Mohawk Operating LLC | Oklahoma City, OK 73173-8907 | Gas Operator | Feb 2004 |
| 19619 | Mohawk Petroleum | | Oil & Gas Operator | Jan 1995 |
| 19620 | Mohican Exploration, LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2024 |
| 19621 | Mohican Oil & Gas, L.L.C. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Apr 2013 |
| 19622 | Mohican Operating, L.L.C. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2021 |
| 19623 | Mohr, Steve | Maize, KS 67101 | Oil Operator | Aug 2022 |
| 19624 | Mojac Energy Corp. | Houston, TX 77056 | Oil & Gas Operator | Dec 1997 |
| 19625 | Mojave Operating Company | Midland, TX 79702 | Oil & Gas Operator | Nov 2002 |
| 19626 | Mojave Resources, LLC | New Braunfels, TX 78132 | Oil Operator | Dec 2025 |
| 19627 | Mojo Exploration & Production, LLC | Rockdale, TX 76567 | Oil Operator | Dec 2025 |
| 19628 | Mokan Capital, LLC | Spicewood, TX 78669 | Oil Operator | Dec 2025 |
| 19629 | Molder, Tom | Imperial, TX 79743 | Oil & Gas Operator | Dec 2025 |
| 19630 | Mole Hole Prod. | Bridgeport, TX 76426 | Oil Operator | Dec 2025 |
| 19631 | Mole Operating Co., Inc. | | Oil & Gas Operator | Oct 1983 |
| 19632 | Moleco, LLC | West Hills, CA 91308 | Oil Operator | Dec 2025 |
| 19633 | Moleo Gas Corp. | San Angelo, TX 76902 | Oil & Gas Operator | Apr 2018 |
| 19634 | Molitor Oil, Inc. | Wichita, KS 67205 | Oil & Gas Operator | Jun 2025 |
| 19635 | Mollenkopf Mark | Anadarko, OK 73005 | Oil Operator | Jul 2025 |
| 19636 | Moller, Herbert T. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 2003 |
| 19637 | Mollett Oil Productions, LLC | Thelma, KY 41260 | Oil Operator | Dec 2020 |
| 19638 | Molly Oil & Gas, LLC | Dallas, TX 75209 | Oil & Gas Operator | Dec 2025 |
| 19639 | Molopo Energy Texas, LLC | Canada, 00100 | Oil & Gas Operator | Jan 2015 |
| 19640 | Molsdorf Ag LLC | McAllen, TX 78503 | Oil Operator | Sep 2013 |
| 19641 | Molz Oil Company Inc | Kiowa, KS 67070 | Oil & Gas Operator | Oct 2025 |
| 19642 | Momentum Energy Corporation | Austin, TX 78746 | Oil & Gas Operator | Dec 2025 |
| 19643 | Momentum Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | Feb 2004 |
| 19644 | Momentum Oil & Gas, LLC | The Woodlands, TX 77382 | Oil & Gas Operator | May 2015 |
| 19645 | Momentum Oil Company | Albany, TX 76430 | Oil & Gas Operator | May 2003 |
| 19646 | Momentum Operating Co., Inc. | Albany, TX 76430 | Oil & Gas Operator | Dec 2025 |
| 19647 | Momentum Production Corp. | Baytown, TX 77521 | Oil & Gas Operator | Dec 2025 |
| 19648 | Moms Oil & Gas LLC | Nowata, OK 74048 | Oil & Gas Operator | Mar 2023 |
| 19649 | Mon Corp. | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 19650 | Mon-Oil Inc | | Oil & Gas Operator | Apr 1996 |
| 19651 | Monadnock Resources Op Co, LLC | Dallas, TX 75209 | Oil & Gas Operator | Jan 2021 |
| 19652 | Monadnock Resources, LLC | Addison, TX 75001 | Oil & Gas Operator | May 2020 |
| 19653 | Monago Operating Inc | | Oil & Gas Operator | Apr 2007 |
| 19654 | Monahan | | Oil Operator | Dec 2009 |
| 19655 | Monahan Rex | Sterling, CO 80751 | Oil & Gas Operator | Jun 2002 |
| 19656 | Monahan* Rex Family Trust | | Oil & Gas Operator | May 2007 |
| 19657 | Monarch Energy C | | Oil Operator | Nov 1987 |
| 19658 | Monarch Energy Company LLC | Eufaula, OK 74432 | Oil & Gas Operator | Oct 2025 |
| 19659 | Monarch Energy LLC | Paola, KS 66071 | Oil Operator | Jun 2025 |
| 19660 | Monarch Operating Company | Graham, TX 76450 | Oil & Gas Operator | Jun 2006 |
| 19661 | Monarch Petroleum Corporation | FT Worth, TX 76102 | Oil & Gas Operator | Dec 2019 |
| 19662 | Moncrief Oil | Casper, WY 82602 | Oil & Gas Operator | Feb 1986 |
| 19663 | Moncrief R W Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 1994 |
| 19664 | Moncrief W A Jr | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 19665 | Moncrief, C. B. | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2021 |
| 19666 | Monday Creek Resources LTD | Logan, OH 43138 | Oil Operator | Dec 2024 |
| 19667 | Mondiale Energy, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Dec 2025 |
| 19668 | Mondo Operating Company | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 19669 | Monex | | Oil Operator | Apr 1988 |
| 19670 | Monexco | Edmond, OK 73034-3776 | Oil & Gas Operator | Mar 2008 |
| 19671 | Monexco LLC | Dallas, TX 75204-2634 | Oil & Gas Operator | Oct 2025 |
| 19672 | Monexco Operating Company | Dallas, TX 75204-2634 | Oil & Gas Operator | Sep 2025 |
| 19673 | Monexco, Inc. | | Oil Operator | Dec 2003 |
| 19674 | Monfort, Roy C. | Iola, KS 66749 | Oil & Gas Operator | Sep 1989 |
| 19675 | Monge Oil Corp. | | Oil & Gas Operator | Dec 2021 |
| 19676 | Mongoose Energy, LLC | San Antonio, TX 78209 | Oil & Gas Operator | Dec 2025 |
| 19677 | Mongrue Oil Company, Inc. | | Oil & Gas Operator | Oct 1999 |
| 19678 | Mongrue, Roland, Inc | | Oil & Gas Operator | Mar 1979 |
| 19679 | Monitor O&G, L.L.C. | Frisco, TX 75034 | Oil & Gas Operator | Jan 2016 |
| 19680 | Monona LLC | Ligonier, PA 15658-0612 | Gas Operator | Sep 2025 |
| 19681 | Monroe Gas Associates-1 | | Gas Operator | Mar 2000 |
| 19682 | Monroe Gas Associates-2 | | Gas Operator | Mar 2000 |
| 19683 | Monroe Gas Joint Venture | | Gas Operator | Sep 2011 |
| 19684 | Monroe James | | Oil & Gas Operator | Oct 1997 |
| 19685 | Monroe Natural Gas Inc | Norman, OK 73071 | Oil & Gas Operator | Oct 2025 |
| 19686 | Monroe Res LTD | Fairport, NY 14450-3218 | Gas Operator | Dec 2004 |
| 19687 | Monroe Well Ser-Amsterdam | | Oil Operator | Dec 1988 |
| 19688 | Monroe Well Ser-La Petr Assoc | | Oil Operator | Dec 1988 |
| 19689 | Monroe Well Ser-La Petro II | | Oil Operator | Dec 1988 |
| 19690 | Monroe Well Ser-New American85 | | Oil Operator | Dec 1988 |
| 19691 | Monroe Well Ser-Ocean Petr '84 | | Oil & Gas Operator | Dec 1988 |
| 19692 | Monroe Well Ser-Ocean Yacht II | | Oil Operator | May 1989 |
| 19693 | Monroe Well Ser-Oceanyacht1985 | | Oil Operator | Dec 1988 |
| 19694 | Monroe Well Ser-Riverside 1985 | | Oil Operator | Dec 1988 |
| 19695 | Monroe Well Serv-New American | | Oil Operator | Dec 1988 |
| 19696 | Monroe Well Serv-Northern La | | Oil Operator | Dec 1988 |
| 19697 | Monroe Well Serv-Omega 1985 | | Oil Operator | Dec 1988 |
| 19698 | Monroe Well Service | | Oil & Gas Operator | Apr 1998 |
| 19699 | Monroe Well Service-Ajk | | Oil Operator | Dec 1988 |
| 19700 | Monroe Well Service-Apk | | Oil Operator | Dec 1988 |