| 7401 | Montex Exploration Company | Houston, TX 77057 | Oil & Gas Operator | Mar 2011 |
| 7402 | Montgomery Petroleum, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Aug 2007 |
| 7403 | Montgomery Royalty | Moran, TX 76464 | Oil & Gas Operator | Apr 2025 |
| 7404 | Montrose Operating LLC | Broken Arrow, OK 74012 | Oil & Gas Operator | Apr 2025 |
| 7405 | Monument Resources, Inc. | Castle Rock, CO 80104 | Oil & Gas Operator | Jun 2012 |
| 7406 | Moody Energy Co. | Canadian, TX 79014 | Oil & Gas Operator | Dec 2004 |
| 7407 | Moody Oil & Gas Co. | Bridgeport, WV 26330-1051 | Oil & Gas Operator | Dec 2004 |
| 7408 | Moody Oil Co. | Pearsall, TX 78061 | Oil & Gas Operator | Apr 2025 |
| 7409 | Moon Operating, Inc. | Longview, TX 75601 | Oil & Gas Operator | Mar 2003 |
| 7410 | Moonlite Oil & Gas Company | Imperial, TX 79743 | Oil & Gas Operator | Apr 2025 |
| 7411 | Moontower Resources Op, LLC | Austin, TX 78732 | Oil & Gas Operator | Apr 2025 |
| 7412 | Moore & Gilmore | Midland, TX 79701 | Oil & Gas Operator | Oct 2008 |
| 7413 | Moore County Gas Partners, L.P. | Borger, TX 79007 | Gas Operator | Apr 2025 |
| 7414 | Moore Energy Services, LLC | Iowa Park, TX 76367 | Oil Operator | Mar 2024 |
| 7415 | Moore Gas And Oil | Monahans, TX 79756 | Oil Operator | Apr 2025 |
| 7416 | Moore Investment Co. | Abilene, TX 79604 | Oil & Gas Operator | Apr 2025 |
| 7417 | Moore Oil And Gas | Burleson, TX 76028 | Oil & Gas Operator | Apr 2025 |
| 7418 | Moore, J.W. Oil Co | Llano, TX 78643 | Oil Operator | Apr 2025 |
| 7419 | Moore, John D. | Midland, TX 79708 | Oil & Gas Operator | Mar 1995 |
| 7420 | Moore, Kirby | Ozona, TX 76943 | Oil & Gas Operator | Jul 1996 |
| 7421 | Moore, Miles Inc. | Moran, TX 76464 | Oil & Gas Operator | Apr 2025 |
| 7422 | Moore, Stephen Operating | Graham, TX 76450 | Oil & Gas Operator | Jun 2002 |
| 7423 | Mooringsport Energy Prod. Co. | Shreveport, LA 71162 | Oil & Gas Operator | Apr 2025 |
| 7424 | Moose Oil & Gas Co. | Houston, TX 77002 | Oil & Gas Operator | Feb 2000 |
| 7425 | Moose Operating Co., Inc. | Houston, TX 77006 | Oil & Gas Operator | Apr 2025 |
| 7426 | Moran-Lavaca, L.L.C. | Shreveport, LA 71134 | Oil Operator | Feb 2018 |
| 7427 | Moransco Energy Corporation | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 7428 | More Texas Oil | Von Ormy, TX 78073 | Oil & Gas Operator | Apr 2025 |
| 7429 | Morgan Creek Gas Processing Co. | Houston, TX 77027 | Gas Operator | Aug 1998 |
| 7430 | Morgan Creek Production Co., Inc | Westbrook, TX 79565 | Oil & Gas Operator | Apr 2025 |
| 7431 | Morgan Enterprises, Inc. | Houston, TX 77024 | Oil & Gas Operator | Apr 2025 |
| 7432 | Morgan Oil Company | Nacogdoches, TX 75963 | Oil & Gas Operator | May 2006 |
| 7433 | Morgan, C. V. Partnership | Olney, TX 76374 | Oil & Gas Operator | Jan 2009 |
| 7434 | Morgas | Shamrock, TX 79079 | Gas Operator | Nov 1994 |
| 7435 | Moriah Operating,LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 7436 | Moriah Resources, Inc. | Midland, TX 79704 | Oil & Gas Operator | Mar 2008 |
| 7437 | Mormar Family Holdings, L.L.C. | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2025 |
| 7438 | Morningstar Gas, Inc. | Las Vegas, NV 89117 | Gas Operator | Apr 2025 |
| 7439 | Morningstar Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2025 |
| 7440 | Morningstar Partners, L.P. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2022 |
| 7441 | Morred, Inc. | Borger, TX 79007 | Oil & Gas Operator | Apr 2025 |
| 7442 | Morrell, W. R. | Albany, TX 76430 | Oil & Gas Operator | Apr 2025 |
| 7443 | Morris Operating Co | Lovington, NM 88260 | Oil & Gas Operator | Apr 2025 |
| 7444 | Morris R. Greenhaw Oil&Gas, Inc | Desdemona, TX 76445 | Oil & Gas Operator | Apr 2025 |
| 7445 | Morris, W. Dale Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Apr 2025 |
| 7446 | Morrison DRLG. & Prod. Co., Inc. | Abilene, TX 79606 | Oil & Gas Operator | Nov 2008 |
| 7447 | Morrow Resources, Inc. | San Angelo, TX 76904 | Oil & Gas Operator | Oct 2004 |
| 7448 | Morsey Oil & Gas Corporation | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2025 |
| 7449 | Mortimer Exploration Company | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2003 |
| 7450 | Mortimer Production Company | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2025 |
| 7451 | Morton Valley Oil & Gas, Inc. | Dallas, TX 75222 | Oil & Gas Operator | Jun 2007 |
| 7452 | Morton, J. V. Oil Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 1999 |
| 7453 | Mosaic Midland LLC | Dallas, TX 75367 | Oil Operator | Apr 2025 |
| 7454 | Mosaic Oil LLC | Dallas, TX 75205 | Oil & Gas Operator | Apr 2025 |
| 7455 | Mosaic Pecos LLC | Dallas, TX 75367 | Oil Operator | Apr 2025 |
| 7456 | Mosaic Texas LLC | Dallas, TX 75205 | Oil & Gas Operator | Apr 2025 |
| 7457 | Mosbacher Energy Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 7458 | Moseley, J. T. | Temple, TX 76502 | Oil & Gas Operator | Sep 2008 |
| 7459 | Moses, Tom | Beaumont, TX 77702 | Oil Operator | Apr 2025 |
| 7460 | Mosley Oil &Gas Inc | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 7461 | Mosman Operating, LLC | Dallas, TX 75204 | Oil Operator | Apr 2025 |
| 7462 | Moss Petroleum Company | Dallas, TX 75207 | Oil & Gas Operator | Apr 2025 |
| 7463 | Moss SWD, LLC | Andrews, TX 79714 | Oil Operator | Apr 2025 |
| 7464 | Moss, William Corp. | Dallas, TX 75219 | Oil & Gas Operator | Oct 2002 |
| 7465 | Mote Resources, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2004 |
| 7466 | Mountain Creek Oil Company, Inc. | Saint Jo, TX 76265 | Oil & Gas Operator | Apr 2025 |
| 7467 | Mowata Oil Company | Victoria, TX 77903 | Oil & Gas Operator | Oct 1996 |
| 7468 | Moxy Oil Company | Seguin, TX 78155 | Oil & Gas Operator | Aug 2003 |
| 7469 | Moy, Gary | Falls City, TX 78113 | Oil & Gas Operator | Nov 1998 |
| 7470 | Moylan, Jimmie C. | Eastland, TX 76448 | Oil & Gas Operator | Apr 2025 |
| 7471 | MPG Petroleum | San Antonio, TX 78217 | Oil & Gas Operator | Aug 2003 |
| 7472 | MPG Petroleum, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2025 |
| 7473 | Mr Oil Company | Monahans, TX 79756 | Oil & Gas Operator | Nov 2004 |
| 7474 | MRR Oil Inc. | Perryton, TX 79070 | Oil & Gas Operator | Jun 2002 |
| 7475 | MSB Operating | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2025 |
| 7476 | MSD Operating, LLC | Big Spring, TX 79721 | Oil & Gas Operator | Apr 2025 |
| 7477 | Mse Operating Corp. | Beaverton, OR 97008 | Oil & Gas Operator | Apr 2025 |
| 7478 | MSN Oil, Inc. | Avoca, TX 79503 | Oil Operator | Apr 2025 |
| 7479 | MSR Exploration, Inc. | Winters, TX 79567 | Oil & Gas Operator | Mar 2000 |
| 7480 | MSSK Consulting LLC | San Antonio, TX 78253 | Oil Operator | Apr 2025 |
| 7481 | MT Energy LLC | Waskom, TX 75692 | Oil & Gas Operator | Apr 2025 |
| 7482 | MTBB Acquisition Company, LLC | Houston, TX 77002 | Oil & Gas Operator | Aug 2022 |
| 7483 | Muckleroy Gas | San Antonio, TX 78247 | Gas Operator | Apr 2025 |
| 7484 | Mud Creek Operating, LLC | Tyler, TX 75702 | Oil & Gas Operator | Apr 2025 |
| 7485 | Mudslinger Oil, L.L.C. | Abilene, TX 79601 | Oil Operator | Apr 2025 |
| 7486 | Mueller Engineering Corp. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Feb 2002 |
| 7487 | Mueller Exploration, Inc. | Portland, TX 78374 | Oil & Gas Operator | Apr 2025 |
| 7488 | Muenster Drilling Co. Inc. | Muenster, TX 76252 | Oil & Gas Operator | Apr 2025 |
| 7489 | Mugg, John D. Jr. | San Antonio, TX 78216 | Oil & Gas Operator | Nov 1997 |
| 7490 | Muirfield Exploration, LTD. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2025 |
| 7491 | Muirfield Resources Company | Tulsa, OK 74101-3166 | Oil & Gas Operator | Jun 2024 |
| 7492 | Muleshoe Crude, LP | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 7493 | Muller Oil & Gas | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2025 |
| 7494 | Mullin, W. B. | Graham, TX 76450 | Oil & Gas Operator | Sep 1998 |
| 7495 | Mullins, Manuel | Olney, TX 76374 | Oil & Gas Operator | Apr 2025 |
| 7496 | Mulloy Operating, Inc. | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 7497 | Mulloy, J. W. Associates, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 2003 |
| 7498 | Multipay Energy, Inc. | Austin, TX 78749 | Oil Operator | Apr 2025 |
| 7499 | Munn, W. H. Operating Company | Midland, TX 79702 | Oil & Gas Operator | Sep 2002 |
| 7500 | Munoco Co. | El Dorado, AR 71730 | Oil & Gas Operator | Jul 2021 |