| 6601 | M-G Gas Company, Inc. | Plano, TX 75086 | Oil & Gas Operator | Jun 1999 |
| 6602 | M-J Oil Company Inc. | Minerva, OH 44657 | Oil & Gas Operator | Dec 2008 |
| 6603 | M-T Petroleum, Inc. | Andrews, TX 79714 | Oil & Gas Operator | Mar 2008 |
| 6604 | M-Tex Resources, Inc. | Merkel, TX 79536 | Oil & Gas Operator | Apr 2026 |
| 6605 | M-V Company | Refugio, TX 78377 | Oil & Gas Operator | Jun 2004 |
| 6606 | M-W-D Oil Co. | Odessa, TX 79760 | Oil & Gas Operator | Jul 1999 |
| 6607 | M. E. Operating & Services, Inc. | Fort Worth, TX 76104 | Oil & Gas Operator | Apr 2026 |
| 6608 | M. Grace, Inc. | Henderson, TX 75653 | Oil & Gas Operator | Apr 2026 |
| 6609 | M. J. G., Inc. | Alice, TX 78333 | Oil & Gas Operator | Jul 2010 |
| 6610 | M. K. Production | Caldwell, TX 77836 | Oil & Gas Operator | Mar 2008 |
| 6611 | M. P. S. Prod. Co. | Houston, TX 77225 | Oil & Gas Operator | Dec 1996 |
| 6612 | M. S. Productions, Inc. | Pittsburg, KS 66762 | Oil & Gas Operator | Nov 2019 |
| 6613 | M.A.R.S. Energy | Midland, TX 79705 | Oil & Gas Operator | Apr 2026 |
| 6614 | M.B. Properties, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Oct 1995 |
| 6615 | M.B.J. Operating | Argyle, TX 76226 | Oil & Gas Operator | Jun 2022 |
| 6616 | M.D. Skroopka Operating, LLC | Oakland, CA 94611 | Oil & Gas Operator | Apr 2026 |
| 6617 | M.J.O.G., Inc. | Fort Smith, AR 72903 | Oil Operator | Mar 2015 |
| 6618 | M.R.M. Operating, Inc. | Midland, TX 79707 | Oil & Gas Operator | Aug 2003 |
| 6619 | M2 Squared Operating, LLC | Rockwall, TX 75032 | Oil Operator | Apr 2026 |
| 6620 | M3V Energy, LLC | Perryton, TX 79070 | Oil & Gas Operator | Apr 2026 |
| 6621 | M5oexit, LLC | Pampa, TX 79066 | Oil & Gas Operator | Apr 2026 |
| 6622 | Mac 5 Operating, LLC | Pampa, TX 79065 | Oil & Gas Operator | Feb 2021 |
| 6623 | Mac Operating | Graham, TX 76450 | Oil & Gas Operator | Jun 2023 |
| 6624 | Mace, T. A. | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2008 |
| 6625 | Macha Enterprises, Inc. | Wichita Falls, TX 76309 | Oil Operator | Apr 2026 |
| 6626 | Machin & Associates, Inc. | Longview, TX 75606 | Oil & Gas Operator | Apr 2026 |
| 6627 | Macina, P.T. | Shamrock, TX 79079 | Gas Operator | Apr 2026 |
| 6628 | Mack Energy Co. | Duncan, OK 73534 | Oil & Gas Operator | Feb 2026 |
| 6629 | Mack Energy Corporation | Artesia, NM 88211 | Oil & Gas Operator | Feb 2026 |
| 6630 | Maclane Gas Company L.P. | Corpus Chrsti, TX 78478 | Oil & Gas Operator | Mar 1994 |
| 6631 | Maddox Operating | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 6632 | Maddux Oil & Gas | Strawn, TX 76475 | Oil & Gas Operator | Apr 2026 |
| 6633 | Maddux, Elizabeth H. | San Antonio, TX 78217 | Oil & Gas Operator | Nov 1995 |
| 6634 | Madera, R. F. | Palm Desert, CA 92210 | Oil & Gas Operator | Sep 2000 |
| 6635 | Madison And Wright LLC | The Colony, TX 75056 | Oil & Gas Operator | Apr 2026 |
| 6636 | Madison Oil Co.-Halbouty, M. T. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1998 |
| 6637 | Madison Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1998 |
| 6638 | Maersk Energy Inc. | Houston, TX 77042 | Oil & Gas Operator | Oct 1994 |
| 6639 | Maertins Production, LLC | Queen City, TX 75572 | Oil Operator | Apr 2026 |
| 6640 | Magellan E&P Holdings, Inc. | Houston, TX 77056 | Oil & Gas Operator | Jun 2021 |
| 6641 | Maggert Energy Corp. | Spring, TX 77387 | Gas Operator | Jun 1998 |
| 6642 | Magic Circle Energy | Oklahoma City, OK 73185 | Oil & Gas Operator | Dec 1983 |
| 6643 | Magic City Oil & Gas | Amarillo, TX 79109 | Oil & Gas Operator | Apr 2026 |
| 6644 | Magic Oil & Gas Inc. | Houston, TX 77079 | Oil & Gas Operator | Jan 2001 |
| 6645 | Magna Diversified Group, Inc. | Jacksonville, TX 75766 | Oil & Gas Operator | Oct 2013 |
| 6646 | Magna Oil & Gas Corporation | Irving, TX 75017 | Oil & Gas Operator | Feb 2016 |
| 6647 | Magna Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2026 |
| 6648 | Magnatex Corp | Midland, TX 79702-1311 | Oil & Gas Operator | Feb 1995 |
| 6649 | Magnet Oil LP | Bronte, TX 76933 | Oil & Gas Operator | Apr 2026 |
| 6650 | Magnolia Oil & Gas Operating LLC | Houston, TX 77046 | Oil & Gas Operator | Apr 2026 |
| 6651 | Magnolia Production Co | Atlanta, TX 75551 | Oil & Gas Operator | Apr 2026 |
| 6652 | Magnum Energy Inc | Norman, OK 73072-2403 | Oil & Gas Operator | Feb 2026 |
| 6653 | Magnum Engineering Company | Corpus Christ, TX 78401 | Oil & Gas Operator | Apr 2026 |
| 6654 | Magnum Hunter Production, Inc. | Irving, TX 75014 | Oil & Gas Operator | Dec 2019 |
| 6655 | Magnum Oil & Gas | Flower Mound, TX 75028 | Oil & Gas Operator | Jul 2000 |
| 6656 | Magnum Oilfield Services LLC | Bakersfield, CA 93309 | Oil Operator | Apr 2026 |
| 6657 | Magnum Operating, LLC | Corpus Christ, TX 78401 | Oil & Gas Operator | Apr 2026 |
| 6658 | Magnum Petroleum, Inc. | Palm Desert, CA 92260 | Oil & Gas Operator | Nov 2013 |
| 6659 | Magnum Producing & Operating Co. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Jan 2004 |
| 6660 | Magnum Producing, LP | Corpus Christ, TX 78401 | Oil & Gas Operator | Apr 2026 |
| 6661 | Magnum Production & Well Service | Iowa Park, TX 76367 | Oil & Gas Operator | Apr 2026 |
| 6662 | Magruder '81, LTD. | Midland, TX 79701 | Oil & Gas Operator | Jan 1995 |
| 6663 | Magruder, Edwin H., Jr. | Midland, TX 79701 | Oil & Gas Operator | Oct 2019 |
| 6664 | Maguire Oil Company | Dallas, TX 75270 | Oil & Gas Operator | Mar 2015 |
| 6665 | Mahfouz Energy Company | Houston, TX 77255 | Oil & Gas Operator | Nov 2020 |
| 6666 | Mahler & Scott | Ruidoso, NM 88355 | Oil & Gas Operator | Aug 2003 |
| 6667 | Mahler, Kelly Operating | Graham, TX 76450 | Oil & Gas Operator | Mar 2017 |
| 6668 | Mai Oil Operations, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 6669 | Main Energy, Inc. | Houston, TX 77079 | Oil & Gas Operator | May 2009 |
| 6670 | Main Street Royalty, Inc. | Lockhart, TX 78644 | Oil & Gas Operator | Aug 1999 |
| 6671 | Majestic Oil & Gas Holding Co. | Graham, TX 76450 | Oil Operator | Apr 2026 |
| 6672 | Majestic Oil & Gas, Inc. | Pampa, TX 79066 | Oil & Gas Operator | May 2007 |
| 6673 | Majestic Petroleum Corporation | Dallas, TX 75230 | Oil & Gas Operator | Oct 1996 |
| 6674 | Majestic Resources, Inc. | Dripping SPGS, TX 78620 | Oil & Gas Operator | Nov 2007 |
| 6675 | Mak-J Energy Partners(TX),LTD. | Denver, CO 80206 | Oil & Gas Operator | Sep 2013 |
| 6676 | Makar Production Company | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 6677 | Makk Oil Production Inc. | Monahans, TX 79756 | Oil & Gas Operator | Apr 2026 |
| 6678 | Mako Exploration Management, LLC | Shreveport, LA 71105 | Oil & Gas Operator | Apr 2026 |
| 6679 | Makoil, Inc. | Lake Forest, CA 92630 | Oil & Gas Operator | Jul 2007 |
| 6680 | Maledon Enterprises | Austin, TX 78738 | Oil & Gas Operator | Feb 1996 |
| 6681 | Mallon Oil Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2005 |
| 6682 | Mallory, Meredith, Jr. | San Antonio, TX 78209 | Oil & Gas Operator | Jul 2002 |
| 6683 | Malone Oil Production | La Vernia, TX 78121 | Oil & Gas Operator | Apr 2026 |
| 6684 | Malson Oil Company | Crawford, OK 73638 | Oil & Gas Operator | Dec 2016 |
| 6685 | Mamerow Energy Corp | Ganado, TX 77962 | Oil & Gas Operator | Apr 2026 |
| 6686 | Mammoth Exploration LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2023 |
| 6687 | Mammoth Operating LLC | Spicewood, TX 78669 | Oil Operator | Apr 2026 |
| 6688 | Mandarin Oil & Gas Company | Austin, TX 78714 | Oil & Gas Operator | Apr 2026 |
| 6689 | Mandujano, Alfonso & Olga | Von Ormy, TX 78073 | Oil & Gas Operator | Dec 2014 |
| 6690 | Mandujano, Alfonso, Jr. | Von Ormy, TX 78073 | Oil Operator | Apr 2026 |
| 6691 | Manhattan Petroleum, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 6692 | Manley, John D. III, Oper., Inc | Corpus Christ, TX 78404 | Oil & Gas Operator | Feb 2016 |
| 6693 | Manning, Jack | Odessa, TX 79760 | Oil & Gas Operator | Dec 2003 |
| 6694 | Manti Exploration Operating LLC | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Feb 2015 |
| 6695 | Manti Operating Company | Covington, LA 70435 | Oil & Gas Operator | Apr 2026 |
| 6696 | Manti Tarka Permian Op, LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2026 |
| 6697 | Mantle Oil & Gas, LLC | Friendswood, TX 77546 | Oil & Gas Operator | Apr 2026 |
| 6698 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 6699 | Manzanita Corporation | Midland, TX 79710 | Oil & Gas Operator | Nov 2008 |
| 6700 | Manzanita Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |