| 7301 | Misener Operating, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2010 |
| 7302 | Mission Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 7303 | Mission Exploration, Inc. | Fate, TX 75132 | Oil & Gas Operator | Dec 1987 |
| 7304 | Mission Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 7305 | Mission River Systems, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Dec 2025 |
| 7306 | Mississippi Ventures, Inc. | Granbury, TX 76048 | Gas Operator | Jul 1997 |
| 7307 | Mist Prod. & Exploration Corp. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 7308 | Mistex Operating, Inc. | Lewisville, TX 75029 | Oil & Gas Operator | Dec 2025 |
| 7309 | Mitchell Drilling Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 2000 |
| 7310 | Mitchell Ehrlich Oil & Gas, LLC | Austin, TX 78746 | Oil & Gas Operator | Dec 2025 |
| 7311 | Mitchell Energy Company L.P. | Spring, TX 77387 | Oil & Gas Operator | Mar 2008 |
| 7312 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
| 7313 | Mitchell Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 2000 |
| 7314 | Mitchell Resources, Inc. | Addison, TX 75001 | Oil & Gas Operator | Aug 2003 |
| 7315 | Mitchell, James - Operator | Lamesa, TX 79331 | Oil & Gas Operator | Mar 2008 |
| 7316 | Mito Resources TX LLC | Edmond, OK 73013 | Oil & Gas Operator | Dec 2025 |
| 7317 | Mitsui E&P USA LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 7318 | Mixon, Robert N. | Lometa, TX 76853 | Oil & Gas Operator | Dec 2025 |
| 7319 | MJ Energy Company, LLC | Kilgore, TX 75663 | Oil Operator | Dec 2025 |
| 7320 | MJ Oil, Inc. | Houston, TX 77265 | Oil & Gas Operator | Dec 2025 |
| 7321 | MJB Oil Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Dec 2025 |
| 7322 | MJB Production Company, Inc. | Brownfield, TX 79316 | Oil & Gas Operator | Dec 2025 |
| 7323 | MJM Oil & Gas, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Aug 2003 |
| 7324 | MK Operating Co. | Pampa, TX 79065 | Oil & Gas Operator | Jun 2014 |
| 7325 | MK Operating Company LLC | Cedar Park, TX 78613 | Oil & Gas Operator | Dec 2025 |
| 7326 | MKS Consulting Corporation | Weatherford, TX 76086 | Oil & Gas Operator | Jul 2005 |
| 7327 | MKS Natural Gas Company | Weatherford, TX 76086 | Oil & Gas Operator | Mar 2016 |
| 7328 | ML Resources, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Mar 2008 |
| 7329 | MLB Operating Services, LLC | Tenn Colony, TX 75861 | Oil & Gas Operator | Dec 2025 |
| 7330 | MLC Co., Inc. | Dallas, TX 75201 | Oil & Gas Operator | Dec 1996 |
| 7331 | MLC Operating, LP | Houston, TX 77063 | Oil & Gas Operator | Dec 2025 |
| 7332 | MLF, Inc. | Houston, TX 77096 | Gas Operator | Nov 2009 |
| 7333 | MM China Star Oil Co., LLC | Woodway, TX 76712 | Oil & Gas Operator | Dec 2025 |
| 7334 | MMD Oil Co. | Olney, TX 76374 | Oil & Gas Operator | Dec 2000 |
| 7335 | MMG Oil Company | Buffalo Gap, TX 79508 | Oil & Gas Operator | Aug 2006 |
| 7336 | MMGL East Texas II, LLC | Dallas, TX 75240 | Oil & Gas Operator | Dec 2025 |
| 7337 | MMGL East Texas III, LLC | Dallas, TX 75240 | Oil & Gas Operator | Dec 2025 |
| 7338 | MMGL TXPH, LLC | Dallas, TX 75240 | Oil & Gas Operator | Dec 2025 |
| 7339 | Mna Enterprises LTD. Co. | Hobbs, NM 88242 | Oil & Gas Operator | Aug 2025 |
| 7340 | Mo-Jon, Inc. | Edroy, TX 78352 | Oil & Gas Operator | May 1999 |
| 7341 | Mobeetie Resource Dev LLC | Perryton, TX 79070 | Oil & Gas Operator | Dec 2025 |
| 7342 | Mobil Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Dec 2007 |
| 7343 | Mobil Petro Vac, Inc. | Duncan, OK 73533 | Oil & Gas Operator | Dec 2025 |
| 7344 | Mobil Producing TX. & N.M. Inc. | Spring, TX 77389 | Oil & Gas Operator | Dec 2025 |
| 7345 | Mobile Petrovac, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |
| 7346 | Mobile Production Systems, Inc. | Austin, TX 78711 | Oil & Gas Operator | Feb 1995 |
| 7347 | Mobpar, Inc. | Houston, TX 77219 | Oil & Gas Operator | Dec 2025 |
| 7348 | Mockingbird Oil, Inc. (I) | Spring, TX 77389 | Oil & Gas Operator | Dec 2025 |
| 7349 | Modena Operating LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2025 |
| 7350 | Modern Exploration, Inc. | Sherman, TX 75090 | Oil & Gas Operator | Dec 2025 |
| 7351 | Moenning, Vernie | Electra, TX 76360 | Oil & Gas Operator | Dec 2025 |
| 7352 | Mog Energy LLC | Tyler, TX 75701 | Oil Operator | Dec 2025 |
| 7353 | Mogul Energy International, Inc. | Houston, TX 77042 | Oil & Gas Operator | Oct 2017 |
| 7354 | Mogul Operating LLC | St Petersburg, FL 33706 | Oil Operator | Dec 2025 |
| 7355 | Mogul Resources, LLC | Cisco, TX 76437 | Oil & Gas Operator | Dec 2025 |
| 7356 | Mohican Exploration, LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2024 |
| 7357 | Mohican Oil & Gas, L.L.C. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Apr 2013 |
| 7358 | Mohican Operating, L.L.C. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2021 |
| 7359 | Mojac Energy Corp. | Houston, TX 77056 | Oil & Gas Operator | Dec 1997 |
| 7360 | Mojave Operating Company | Midland, TX 79702 | Oil & Gas Operator | Nov 2002 |
| 7361 | Mojave Resources, LLC | New Braunfels, TX 78132 | Oil Operator | Dec 2025 |
| 7362 | Mojo Exploration & Production, LLC | Rockdale, TX 76567 | Oil Operator | Dec 2025 |
| 7363 | Mokan Capital, LLC | Spicewood, TX 78669 | Oil Operator | Dec 2025 |
| 7364 | Molder, Tom | Imperial, TX 79743 | Oil & Gas Operator | Dec 2025 |
| 7365 | Mole Hole Prod. | Bridgeport, TX 76426 | Oil Operator | Dec 2025 |
| 7366 | Moleco, LLC | West Hills, CA 91308 | Oil Operator | Dec 2025 |
| 7367 | Moleo Gas Corp. | San Angelo, TX 76902 | Oil & Gas Operator | Apr 2018 |
| 7368 | Moller, Herbert T. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 2003 |
| 7369 | Molly Oil & Gas, LLC | Dallas, TX 75209 | Oil & Gas Operator | Dec 2025 |
| 7370 | Molopo Energy Texas, LLC | Canada, 00100 | Oil & Gas Operator | Jan 2015 |
| 7371 | Molsdorf Ag LLC | McAllen, TX 78503 | Oil Operator | Sep 2013 |
| 7372 | Momentum Energy Corporation | Austin, TX 78746 | Oil & Gas Operator | Dec 2025 |
| 7373 | Momentum Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | Feb 2004 |
| 7374 | Momentum Oil & Gas, LLC | The Woodlands, TX 77382 | Oil & Gas Operator | May 2015 |
| 7375 | Momentum Oil Company | Albany, TX 76430 | Oil & Gas Operator | May 2003 |
| 7376 | Momentum Operating Co., Inc. | Albany, TX 76430 | Oil & Gas Operator | Dec 2025 |
| 7377 | Momentum Production Corp. | Baytown, TX 77521 | Oil & Gas Operator | Dec 2025 |
| 7378 | Mon Corp. | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 7379 | Monadnock Resources Op Co, LLC | Dallas, TX 75209 | Oil & Gas Operator | Jan 2021 |
| 7380 | Monadnock Resources, LLC | Addison, TX 75001 | Oil & Gas Operator | May 2020 |
| 7381 | Monarch Operating Company | Graham, TX 76450 | Oil & Gas Operator | Jun 2006 |
| 7382 | Moncrief W A Jr | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 7383 | Moncrief, C. B. | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2021 |
| 7384 | Mondiale Energy, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Dec 2025 |
| 7385 | Mondo Operating Company | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 7386 | Monexco LLC | Dallas, TX 75204-2634 | Oil & Gas Operator | Aug 2025 |
| 7387 | Mongoose Energy, LLC | San Antonio, TX 78209 | Oil & Gas Operator | Dec 2025 |
| 7388 | Monitor O&G, L.L.C. | Frisco, TX 75034 | Oil & Gas Operator | Jan 2016 |
| 7389 | Monsanto Company | Indianapolis, IN 46280 | Oil & Gas Operator | Jan 2005 |
| 7390 | Mont-Land Co. | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 7391 | Montare Operating, LTD. | Flower Mound, TX 75022 | Oil & Gas Operator | Dec 2025 |
| 7392 | Montclair Energy LLC | Edmond, OK 73034-7291 | Oil & Gas Operator | Sep 2025 |
| 7393 | Montclair Production Company | Austin, TX 78755 | Oil & Gas Operator | Dec 2025 |
| 7394 | Montco Oil & Gas, Inc. | Pampa, TX 79066 | Oil & Gas Operator | May 1999 |
| 7395 | Monterey Resources LLC | Dallas, TX 75230 | Oil & Gas Operator | Oct 2019 |
| 7396 | Montex Drilling Company LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 7397 | Montex Exploration Company | Houston, TX 77057 | Oil & Gas Operator | Mar 2011 |
| 7398 | Montgomery Petroleum, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Aug 2007 |
| 7399 | Montgomery Royalty | Moran, TX 76464 | Oil & Gas Operator | Dec 2025 |
| 7400 | Montrose Operating LLC | Broken Arrow, OK 74012 | Oil & Gas Operator | Dec 2025 |