| 7301 | Moncrief, C. B. | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2021 |
| 7302 | Mondiale Energy, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Jul 2025 |
| 7303 | Mondo Operating Company | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 7304 | Monexco LLC | Dallas, TX 75204-2634 | Oil & Gas Operator | Apr 2025 |
| 7305 | Mongoose Energy, LLC | San Antonio, TX 78209 | Oil & Gas Operator | Jul 2025 |
| 7306 | Monitor O&G, L.L.C. | Frisco, TX 75034 | Oil & Gas Operator | Jan 2016 |
| 7307 | Monsanto Company | Indianapolis, IN 46280 | Oil & Gas Operator | Jan 2005 |
| 7308 | Montare Operating, LTD. | Flower Mound, TX 75022 | Oil & Gas Operator | Jul 2025 |
| 7309 | Montclair Energy LLC | Edmond, OK 73034-7291 | Oil & Gas Operator | Apr 2025 |
| 7310 | Montclair Production Company | Austin, TX 78755 | Oil & Gas Operator | Jul 2025 |
| 7311 | Montco Oil & Gas, Inc. | Pampa, TX 79066 | Oil & Gas Operator | May 1999 |
| 7312 | Monterey Resources LLC | Dallas, TX 75230 | Oil & Gas Operator | Oct 2019 |
| 7313 | Montex Drilling Company LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2025 |
| 7314 | Montex Exploration Company | Houston, TX 77057 | Oil & Gas Operator | Mar 2011 |
| 7315 | Montgomery Petroleum, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Aug 2007 |
| 7316 | Montgomery Royalty | Moran, TX 76464 | Oil & Gas Operator | Jul 2025 |
| 7317 | Montrose Operating LLC | Broken Arrow, OK 74012 | Oil & Gas Operator | Jul 2025 |
| 7318 | Monument Resources, Inc. | Castle Rock, CO 80104 | Oil & Gas Operator | Jun 2012 |
| 7319 | Moody Energy Co. | Canadian, TX 79014 | Oil & Gas Operator | Dec 2004 |
| 7320 | Moody Oil & Gas Co. | Bridgeport, WV 26330-1051 | Oil & Gas Operator | Dec 2004 |
| 7321 | Moody Oil Co. | Pearsall, TX 78061 | Oil & Gas Operator | Jul 2025 |
| 7322 | Moon Operating, Inc. | Longview, TX 75601 | Oil & Gas Operator | Mar 2003 |
| 7323 | Moonlite Oil & Gas Company | Imperial, TX 79743 | Oil & Gas Operator | Jul 2025 |
| 7324 | Moontower Resources Op, LLC | Austin, TX 78732 | Oil & Gas Operator | Jul 2025 |
| 7325 | Moore & Gilmore | Midland, TX 79701 | Oil & Gas Operator | Oct 2008 |
| 7326 | Moore County Gas Partners, L.P. | Borger, TX 79007 | Gas Operator | Jul 2025 |
| 7327 | Moore Energy Services, LLC | Iowa Park, TX 76367 | Oil Operator | Mar 2024 |
| 7328 | Moore Gas And Oil | Monahans, TX 79756 | Oil Operator | Jul 2025 |
| 7329 | Moore Investment Co. | Abilene, TX 79604 | Oil & Gas Operator | Jul 2025 |
| 7330 | Moore Oil And Gas | Burleson, TX 76028 | Oil & Gas Operator | Jul 2025 |
| 7331 | Moore, J.W. Oil Co | Llano, TX 78643 | Oil Operator | Jul 2025 |
| 7332 | Moore, John D. | Midland, TX 79708 | Oil & Gas Operator | Mar 1995 |
| 7333 | Moore, Kirby | Ozona, TX 76943 | Oil & Gas Operator | Jul 1996 |
| 7334 | Moore, Miles Inc. | Moran, TX 76464 | Oil & Gas Operator | Jul 2025 |
| 7335 | Moore, Stephen Operating | Graham, TX 76450 | Oil & Gas Operator | Jun 2002 |
| 7336 | Mooringsport Energy Prod. Co. | Shreveport, LA 71162 | Oil & Gas Operator | Jul 2025 |
| 7337 | Moose Oil & Gas Co. | Houston, TX 77002 | Oil & Gas Operator | Feb 2000 |
| 7338 | Moose Operating Co., Inc. | Houston, TX 77006 | Oil & Gas Operator | Jul 2025 |
| 7339 | Moran-Lavaca, L.L.C. | Shreveport, LA 71134 | Oil Operator | Feb 2018 |
| 7340 | Moransco Energy Corporation | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 7341 | More Texas Oil | Von Ormy, TX 78073 | Oil & Gas Operator | Jul 2025 |
| 7342 | Morgan Creek Gas Processing Co. | Houston, TX 77027 | Gas Operator | Aug 1998 |
| 7343 | Morgan Creek Production Co., Inc | Westbrook, TX 79565 | Oil & Gas Operator | Jul 2025 |
| 7344 | Morgan Enterprises, Inc. | Houston, TX 77024 | Oil & Gas Operator | Jul 2025 |
| 7345 | Morgan Oil Company | Nacogdoches, TX 75963 | Oil & Gas Operator | May 2006 |
| 7346 | Morgan, C. V. Partnership | Olney, TX 76374 | Oil & Gas Operator | Jan 2009 |
| 7347 | Morgas | Shamrock, TX 79079 | Gas Operator | Nov 1994 |
| 7348 | Moriah Operating,LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 7349 | Moriah Resources, Inc. | Midland, TX 79704 | Oil & Gas Operator | Mar 2008 |
| 7350 | Mormar Family Holdings, L.L.C. | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2025 |
| 7351 | Morningstar Gas, Inc. | Las Vegas, NV 89117 | Gas Operator | Jul 2025 |
| 7352 | Morningstar Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2025 |
| 7353 | Morningstar Partners, L.P. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2022 |
| 7354 | Morred, Inc. | Borger, TX 79007 | Oil & Gas Operator | Jul 2025 |
| 7355 | Morrell, W. R. | Albany, TX 76430 | Oil & Gas Operator | Jul 2025 |
| 7356 | Morris Operating Co | Lovington, NM 88260 | Oil & Gas Operator | Jul 2025 |
| 7357 | Morris R. Greenhaw Oil&Gas, Inc | Desdemona, TX 76445 | Oil & Gas Operator | Jul 2025 |
| 7358 | Morris, W. Dale Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Jul 2025 |
| 7359 | Morrison DRLG. & Prod. Co., Inc. | Abilene, TX 79606 | Oil & Gas Operator | Nov 2008 |
| 7360 | Morrow Resources, Inc. | San Angelo, TX 76904 | Oil & Gas Operator | Oct 2004 |
| 7361 | Morsey Oil & Gas Corporation | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Jul 2025 |
| 7362 | Mortimer Exploration Company | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2003 |
| 7363 | Mortimer Production Company | San Antonio, TX 78209 | Oil & Gas Operator | Jul 2025 |
| 7364 | Morton Valley Oil & Gas, Inc. | Dallas, TX 75222 | Oil & Gas Operator | Jun 2007 |
| 7365 | Morton, J. V. Oil Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 1999 |
| 7366 | Mosaic Midland LLC | Dallas, TX 75367 | Oil Operator | Jul 2025 |
| 7367 | Mosaic Oil LLC | Dallas, TX 75205 | Oil & Gas Operator | Jul 2025 |
| 7368 | Mosaic Pecos LLC | Dallas, TX 75367 | Oil Operator | Jul 2025 |
| 7369 | Mosaic Texas LLC | Dallas, TX 75205 | Oil & Gas Operator | Jul 2025 |
| 7370 | Mosbacher Energy Company | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 7371 | Moseley, J. T. | Temple, TX 76502 | Oil & Gas Operator | Sep 2008 |
| 7372 | Moses, Tom | Beaumont, TX 77702 | Oil Operator | Jul 2025 |
| 7373 | Mosley Oil &Gas Inc | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 7374 | Mosman Operating, LLC | Dallas, TX 75204 | Oil Operator | Jul 2025 |
| 7375 | Moss Petroleum Company | Dallas, TX 75207 | Oil & Gas Operator | Jul 2025 |
| 7376 | Moss SWD, LLC | Andrews, TX 79714 | Oil Operator | Jul 2025 |
| 7377 | Moss, William Corp. | Dallas, TX 75219 | Oil & Gas Operator | Oct 2002 |
| 7378 | Mote Resources, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2004 |
| 7379 | Mountain Creek Oil Company, Inc. | Saint Jo, TX 76265 | Oil & Gas Operator | Jul 2025 |
| 7380 | Mowata Oil Company | Victoria, TX 77903 | Oil & Gas Operator | Oct 1996 |
| 7381 | Moxy Oil Company | Seguin, TX 78155 | Oil & Gas Operator | Aug 2003 |
| 7382 | Moy, Gary | Falls City, TX 78113 | Oil & Gas Operator | Nov 1998 |
| 7383 | Moylan, Jimmie C. | Eastland, TX 76448 | Oil & Gas Operator | Jul 2025 |
| 7384 | MPG Petroleum | San Antonio, TX 78217 | Oil & Gas Operator | Aug 2003 |
| 7385 | MPG Petroleum, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Jul 2025 |
| 7386 | Mr Oil Company | Monahans, TX 79756 | Oil & Gas Operator | Nov 2004 |
| 7387 | MRR Oil Inc. | Perryton, TX 79070 | Oil & Gas Operator | Jun 2002 |
| 7388 | MSB Operating | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2025 |
| 7389 | MSD Operating, LLC | Big Spring, TX 79721 | Oil & Gas Operator | Jul 2025 |
| 7390 | Mse Operating Corp. | Beaverton, OR 97008 | Oil & Gas Operator | Jul 2025 |
| 7391 | MSN Oil, Inc. | Avoca, TX 79503 | Oil Operator | Jul 2025 |
| 7392 | MSR Exploration, Inc. | Winters, TX 79567 | Oil & Gas Operator | Mar 2000 |
| 7393 | MSSK Consulting LLC | San Antonio, TX 78253 | Oil Operator | Jul 2025 |
| 7394 | MT Energy LLC | Waskom, TX 75692 | Oil & Gas Operator | Jul 2025 |
| 7395 | MTBB Acquisition Company, LLC | Houston, TX 77002 | Oil & Gas Operator | Aug 2022 |
| 7396 | Muckleroy Gas | San Antonio, TX 78247 | Gas Operator | Jul 2025 |
| 7397 | Mud Creek Operating, LLC | Tyler, TX 75702 | Oil & Gas Operator | Jul 2025 |
| 7398 | Mudslinger Oil, L.L.C. | Abilene, TX 79601 | Oil Operator | Jul 2025 |
| 7399 | Mueller Engineering Corp. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Feb 2002 |
| 7400 | Mueller Exploration, Inc. | Portland, TX 78374 | Oil & Gas Operator | Jul 2025 |