| 19401 | Morrow Oil & Gas Co. | Terry, MS 39170 | Oil & Gas Operator | Jun 2026 |
| 19402 | Morrow Operating Co., Inc. | | Oil Operator | Mar 2003 |
| 19403 | Morrow Resources, Inc. | San Angelo, TX 76904 | Oil & Gas Operator | Oct 2004 |
| 19404 | Morrow, Joe | Farmington, NM 87401 | Oil Operator | Jan 1993 |
| 19405 | Morrows Stoney Point Farm Inc | New Concord, OH 43762 | Oil & Gas Operator | Dec 2017 |
| 19406 | Morse, John R. | Portland, NY 14769 | Gas Operator | Dec 2025 |
| 19407 | Morsey Oil & Gas | | Oil & Gas Operator | Mar 1995 |
| 19408 | Morsey Oil & Gas Corporation | Corpus Christ, TX 78401 | Oil & Gas Operator | Sep 2026 |
| 19409 | Mortimer Exploration Company | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2003 |
| 19410 | Mortimer Production Company | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2026 |
| 19411 | Morton And Dolley | | Oil Operator | Dec 1991 |
| 19412 | Morton Bros A Partnership | Bristow, OK 74010-0403 | Oil & Gas Operator | Jul 2003 |
| 19413 | Morton Brothers Company | Bristow, OK 74010 | Oil & Gas Operator | May 2009 |
| 19414 | Morton Drilling Company | Bristow, OK 74010-1279 | Oil & Gas Operator | Jun 1995 |
| 19415 | Morton Leases | Morris, OK 74445-2048 | Oil & Gas Operator | Jul 2017 |
| 19416 | Morton Leases Inc | | Oil & Gas Operator | Jun 2026 |
| 19417 | Morton Production Inc | Ada, OK 74820-2643 | Oil & Gas Operator | Sep 2014 |
| 19418 | Morton Valley Oil & Gas, Inc. | Dallas, TX 75222 | Oil & Gas Operator | Jun 2007 |
| 19419 | Morton, J. V. Oil Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 1999 |
| 19420 | Mosaic Midland LLC | Dallas, TX 75367 | Oil Operator | Sep 2026 |
| 19421 | Mosaic Pecos LLC | Dallas, TX 75367 | Oil Operator | Sep 2026 |
| 19422 | Mosaic Texas LLC | Dallas, TX 75205 | Oil & Gas Operator | Sep 2026 |
| 19423 | Mosbacher Energy Company | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 19424 | Mosbacher Production Co. | Houston, TX 77001 | Oil & Gas Operator | Aug 1984 |
| 19425 | Mosbacher, Robert-Pruet, Chesley | | Oil & Gas Operator | Dec 1983 |
| 19426 | Moseley Petroleum Corp. | | Oil & Gas Operator | Apr 1988 |
| 19427 | Moseley, J. T. | Temple, TX 76502 | Oil & Gas Operator | Sep 2008 |
| 19428 | Moses Gas, Inc. | Indore, WV 251110100 | Gas Operator | Dec 2018 |
| 19429 | Moses, Tom | Beaumont, TX 77702 | Oil Operator | Sep 2026 |
| 19430 | Mosher Gas, LLC | Knoxville, PA 16928 | Gas Operator | Dec 2025 |
| 19431 | Moskowitz Charles J | | Oil Operator | Feb 2014 |
| 19432 | Moskowitz Oil & Gas LLC | | Oil Operator | Jun 2026 |
| 19433 | Mosley Oil &Gas Inc | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 19434 | Mosman Operating, LLC | Dallas, TX 75204 | Oil Operator | Jan 2026 |
| 19435 | Moss Petroleum Company | Dallas, TX 75207 | Oil & Gas Operator | Sep 2026 |
| 19436 | Moss Properties Inc | | Oil & Gas Operator | Mar 1986 |
| 19437 | Moss SWD, LLC | Andrews, TX 79714 | Oil Operator | Sep 2026 |
| 19438 | Moss Ted A Operating Company | Oklahoma City, OK 73126-0187 | Oil & Gas Operator | Jun 1997 |
| 19439 | Moss William Properties Inc | Dallas, TX 75219 | Oil & Gas Operator | Apr 2014 |
| 19440 | Moss, William Corp. | Dallas, TX 75219 | Oil & Gas Operator | Oct 2002 |
| 19441 | Mossholder Drilling Co | Newark, OH 43055 | Oil Operator | Dec 1990 |
| 19442 | Mossholder Linda Dba | Newark, OH 43055 | Oil & Gas Operator | Dec 2015 |
| 19443 | Mossor, L. E. | Harrisville, WV 263620000 | Oil & Gas Operator | Dec 2002 |
| 19444 | Mosthaf Edwin C And Mosthaf Levina M | | Oil Operator | Jul 2020 |
| 19445 | Mote Resources, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2004 |
| 19446 | Mott Energy LLC | Riverview, FL 33569-6702 | Oil & Gas Operator | Sep 2024 |
| 19447 | Mott Oil & Gas | Sugarland, TX 77478 | Oil & Gas Operator | May 2001 |
| 19448 | Mott Petroleum Corporation | Sugar Land, TX 77487 | Oil & Gas Operator | Aug 2024 |
| 19449 | Motto Energy Inc. | Normantown, WV 252678215 | Oil & Gas Operator | Dec 2021 |
| 19450 | Mount Chestnut Dev LLC | Butler, PA 16002-3940 | Gas Operator | Dec 2017 |
| 19451 | Mount Richard | Newark, OH 43055 | Oil Operator | Dec 2005 |
| 19452 | Mount, Thomas | North East, PA 16428 | Gas Operator | Dec 2025 |
| 19453 | Mountain Creek Energy Inc | Georgetown, TX 78633 | Oil & Gas Operator | May 2026 |
| 19454 | Mountain Creek Oil Company, Inc. | Saint Jo, TX 76265 | Oil & Gas Operator | Sep 2026 |
| 19455 | Mountain Divide, LLC | | Oil & Gas Operator | Mar 2017 |
| 19456 | Mountain DRLG, Inc | Hindman, KY 41822 | Oil & Gas Operator | Dec 2024 |
| 19457 | Mountain Fuel Supply Co | Salt Lake City, UT 84139 | Oil & Gas Operator | May 1984 |
| 19458 | Mountain Hawk Energy LLC | Athens, TX 75751 | Gas Operator | Jan 2015 |
| 19459 | Mountain Oil And Gas Inc | Roosevelt, UT 84066 | Oil & Gas Operator | Aug 2026 |
| 19460 | Mountain Pacific General Inc. | Cut Bank, MT 59427 | Oil & Gas Operator | Jun 2022 |
| 19461 | Mountain Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Apr 2013 |
| 19462 | Mountain Resource Corporation | Salt Lake City, UT 84124 | Oil & Gas Operator | Dec 1988 |
| 19463 | Mountain State Oil Company, L..L.C. | Pennsboro, WV 264150014 | Oil & Gas Operator | Dec 2021 |
| 19464 | Mountain State Well Tending | Hurricane, WV 255260000 | Oil & Gas Operator | Dec 2021 |
| 19465 | Mountain States Petroleum Corp | Midland, TX 79702 | Oil & Gas Operator | Apr 2008 |
| 19466 | Mountain States Resources Inc | Cut Bank, MT 59427 | Oil & Gas Operator | Oct 2000 |
| 19467 | Mountain V Oil & Gas, Inc. | Buckhannon, WV 26201 | Oil & Gas Operator | Dec 2024 |
| 19468 | Mountain V Texas, LLC | Buckhannon, WV 26201 | Oil & Gas Operator | Sep 2026 |
| 19469 | Mountain V, LLC | Buckhannon, WV 26201 | Oil & Gas Operator | Dec 2021 |
| 19470 | Mountain VIew Resources LLC | | Oil & Gas Operator | Jul 2026 |
| 19471 | Mountaineer State Energy, Inc. | Dallas, TX 75234 | Oil & Gas Operator | Dec 2021 |
| 19472 | Mountaineer State Operations, LLC | Sandyville, WV 25275 | Oil & Gas Operator | Dec 2025 |
| 19473 | Mountaineer Trading Company, LLC | Charleston, WV 25314 | Oil & Gas Operator | Dec 2016 |
| 19474 | Mountainside Energy Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Sep 2026 |
| 19475 | Mourning James & Carol | Middleport, OH 45760-1214 | Gas Operator | Dec 2024 |
| 19476 | Mowata Oil Company | Victoria, TX 77903 | Oil & Gas Operator | Oct 1996 |
| 19477 | Moxy Oil Company | Seguin, TX 78155 | Oil & Gas Operator | Aug 2003 |
| 19478 | Moy, Gary | Falls City, TX 78113 | Oil & Gas Operator | Nov 1998 |
| 19479 | Moylan, Jimmie C. | Eastland, TX 76448 | Oil & Gas Operator | Sep 2026 |
| 19480 | Moylan, Thomas F. | Lacygne, KS 66040 | Oil & Gas Operator | Dec 1993 |
| 19481 | Mozark Corporation | Spring, TX 77379-8049 | Oil & Gas Operator | Jan 2011 |
| 19482 | Moze Inc | Ochelata, OK 74051 | Oil & Gas Operator | Jan 2001 |
| 19483 | MPG Petroleum | San Antonio, TX 78217 | Oil & Gas Operator | Aug 2003 |
| 19484 | MPG Petroleum, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2026 |
| 19485 | Mr NM Operating LLC | Dallas, TX 75225 | Oil & Gas Operator | Jul 2026 |
| 19486 | Mr Oil Company | Monahans, TX 79756 | Oil & Gas Operator | Nov 2004 |
| 19487 | MRD Nowata LLC | Woodstock, GA 30189 | Oil Operator | Aug 2017 |
| 19488 | MRD Operating LLC | | Oil & Gas Operator | Dec 2016 |
| 19489 | MRD Operating LLC (Delaware) | Houston, TX 77010 | Oil & Gas Operator | Jul 2015 |
| 19490 | Mri Ventures, Inc. | | Oil Operator | Dec 1993 |
| 19491 | Mroz Baier, Christine | Memphis, TN 38120 | Gas Operator | Dec 2025 |
| 19492 | MRR Oil Inc. | Perryton, TX 79070 | Oil & Gas Operator | Jun 2002 |
| 19493 | Mrs. C. M. Roberson | | Oil Operator | Mar 1989 |
| 19494 | Mrs. Cecile Andries & Sons | | Oil Operator | Dec 2006 |
| 19495 | MRT Exploration Co | | Oil & Gas Operator | Feb 1983 |
| 19496 | MS Producing LLC | Creston, OH 44217 | Oil & Gas Operator | Dec 2025 |
| 19497 | MS United, LLC | | Oil & Gas Operator | Jun 2026 |
| 19498 | MSB Operating | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2026 |
| 19499 | MSB Operating Company | Enid, OK 73703 | Oil & Gas Operator | Jan 2005 |
| 19500 | MSD Energy, Inc | Rapid City, SD 57702 | Oil & Gas Operator | Dec 2020 |