| 1 | M & A Oil Company, LTD. | Wichita Falls, TX 76307 | Oil & Gas Operator | Nov 2025 |
| 2 | M & A Well Service, Inc. | Arnoldsburg, WV 25234-0000 | Oil & Gas Operator | Dec 2021 |
| 3 | M & B Oil Company | Holliday, TX 76366 | Oil & Gas Operator | Aug 2025 |
| 4 | M & B Operating, LLC | Gonzales, TX 78629 | Oil Operator | Nov 2025 |
| 5 | M & B Well Servi | | Oil Operator | Aug 1990 |
| 6 | M & C Oil Inc | Indianola, NE 68034 | Oil & Gas Operator | Nov 2013 |
| 7 | M & C Oil Incorp | | Oil Operator | Mar 1995 |
| 8 | M & C Operating, LLC | Poteet, TX 78065 | Oil Operator | Nov 2025 |
| 9 | M & D Oil & Gas | Levelland, TX 79336 | Oil & Gas Operator | Aug 2000 |
| 10 | M & D Oil And Gas, LLC | Sterling, KS 67579 | Oil Operator | Jun 2025 |
| 11 | M & D Oil Co, A General Partnership | Beaver, OK 73932 | Gas Operator | Oct 2022 |
| 12 | M & D Pumping Service Inc | Ringwood, OK 73768-3415 | Oil & Gas Operator | Aug 2025 |
| 13 | M & G DRLG Co Inc | Farmington, NM 87499 | Oil & Gas Operator | Aug 2025 |
| 14 | M & G Oil And Gas Inc | Llabarge, WY 83123 | Oil & Gas Operator | Apr 2023 |
| 15 | M & G Oil Company | Marble Falls, TX 78654 | Oil & Gas Operator | Nov 2025 |
| 16 | M & G Oil Inc | Russell, KS 67665 | Oil Operator | Jun 2025 |
| 17 | M & H Enterprises | Bartlesville, OK 74006-5504 | Oil & Gas Operator | Jan 2013 |
| 18 | M & J Energy, Inc. | Breckenridge, CO 80424 | Oil & Gas Operator | Nov 2025 |
| 19 | M & J Operator | | Oil & Gas Operator | Sep 2025 |
| 20 | M & J Production Company | Austwell, TX 77950 | Oil & Gas Operator | Jun 2020 |
| 21 | M & K Oil Company | Gillette, WY 82717-3470 | Oil & Gas Operator | Jul 2025 |
| 22 | M & K Oil Company LLC | Gillette, WY 82716 | Oil & Gas Operator | Sep 2025 |
| 23 | M & K Oil Operations | | Oil & Gas Operator | Sep 1994 |
| 24 | M & K Operating LLC | Albany, TX 76430 | Oil & Gas Operator | Nov 2025 |
| 25 | M & L Drilling Co | Utica, OH 43080 | Oil & Gas Operator | Dec 1992 |
| 26 | M & L Enterprises A Partnership | Hobbs, NM 88240 | Oil & Gas Operator | Feb 2001 |
| 27 | M & L Oil Compan | | Oil Operator | Jun 1993 |
| 28 | M & M Construction Co. | Kilgore, TX 75663 | Oil & Gas Operator | Jan 1996 |
| 29 | M & M Contractin | | Oil Operator | Mar 1992 |
| 30 | M & M Drilling | Spencer, WV 25276-0905 | Oil & Gas Operator | Dec 2021 |
| 31 | M & M Drilling And Development | | Gas Operator | Dec 1988 |
| 32 | M & M Drilling, Inc. | Spencer, WV 25276-0905 | Oil & Gas Operator | Dec 2021 |
| 33 | M & M Exploration Inc | Westminster, CO 80031 | Oil & Gas Operator | Aug 2025 |
| 34 | M & M General Contractors, Inc. | Big Spring, TX 79720 | Oil & Gas Operator | Nov 2025 |
| 35 | M & M Investments | | Oil & Gas Operator | May 1990 |
| 36 | M & M Oil & Gas Exploration Inc | Abilene, TX 79601 | Oil & Gas Operator | Mar 2008 |
| 37 | M & M Oil Co., LLC | Oil City, LA 71061 | Oil & Gas Operator | Nov 2025 |
| 38 | M & M Oil Company | Monahans, TX 79756 | Oil & Gas Operator | Jun 2025 |
| 39 | M & M Petroleum Company | Mannford, OK 74044-0462 | Oil Operator | Apr 2020 |
| 40 | M & M Production | | Oil & Gas Operator | Jun 2010 |
| 41 | M & M Production & Operation | Farmington, NM 87402 | Oil & Gas Operator | Oct 2019 |
| 42 | M & M Production LTD. | Midland, TX 79704 | Oil & Gas Operator | Nov 2025 |
| 43 | M & M Resources Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Sep 2018 |
| 44 | M & M Royalty LTD | North Canton, OH 44720 | Oil & Gas Operator | Dec 2016 |
| 45 | M & M Well Service, LLC | Medicine Lodge, KS 67104 | Gas Operator | Jun 2025 |
| 46 | M & O Oil Co.A General Partnership | Fredonia, KS 66736 | Oil Operator | May 2025 |
| 47 | M & R Exploration Company | Houston, TX 77074 | Oil & Gas Operator | Aug 2003 |
| 48 | M & R Investments Ohio LLC | Birmingham, AL 35238 | Oil & Gas Operator | Dec 2019 |
| 49 | M & S Energy, LLC | El Dorado, KS 67042 | Oil Operator | Jun 2019 |
| 50 | M & S Exploration | El Campo, TX 77437 | Oil & Gas Operator | Nov 2025 |
| 51 | M & S Oil Co | Lawrenceburg, IN 47025-8675 | Oil & Gas Operator | Aug 2000 |
| 52 | M & S Operating LLC | Oklahoma City, OK 73112 | Oil Operator | Mar 1999 |
| 53 | M & S Production, Inc. | | Oil Operator | Jul 1994 |
| 54 | M & T Oil Company | Copan, OK 74022 | Oil Operator | Aug 2025 |
| 55 | M & T Petroleum Management Inc | | Oil Operator | May 1984 |
| 56 | M & T Production Company LLC | Tulsa, OK 74132-3742 | Oil Operator | Apr 2011 |
| 57 | M & W Of Lovington Inc | Lovington, NM 88260 | Oil & Gas Operator | Jan 2011 |
| 58 | M & W Oil LLC | Hamilton, KS 66853 | Oil Operator | Nov 2015 |
| 59 | M & Z Engineering, Inc. | | Oil & Gas Operator | May 1998 |
| 60 | M A S Operators | Kilgore, TX 75663 | Oil & Gas Operator | Jul 1999 |
| 61 | M And V Resources Inc | Crescent, OK 73028 | Oil & Gas Operator | Aug 2025 |
| 62 | M Brad Bennett Inc | Midland, TX 797101510 | Oil & Gas Operator | Jul 2006 |
| 63 | M C F Oil Co Inc | Dellroy, OH 44620 | Oil & Gas Operator | Dec 1995 |
| 64 | M C Gandy & Dale Gandy | Hobbs, NM BADADDR | Oil Operator | Sep 2008 |
| 65 | M D B Operations | | Oil Operator | Dec 1988 |
| 66 | M E Booth Corporation | Ada, OK 74820 | Oil Operator | Jun 2025 |
| 67 | M E G G , Inc. | Borger, TX 79008 | Oil & Gas Operator | Sep 2003 |
| 68 | M E III Corporation | | Oil & Gas Operator | Apr 2022 |
| 69 | M E Klein & Associates LLC | Washington, OK 73093-4663 | Oil & Gas Operator | Aug 2025 |
| 70 | M E Klein & Associates, Inc. | Norman, OK 73070 | Oil & Gas Operator | Jun 2025 |
| 71 | M E W Enterprise | Roswell, NM 88203 | Oil & Gas Operator | Aug 2024 |
| 72 | M G Energy LLC | Cushing, OK 74023 | Oil Operator | Aug 2025 |
| 73 | M G Gulff | | Oil Operator | May 1988 |
| 74 | M G Production Co | Rock Springs, WY 82901 | Oil Operator | Dec 1999 |
| 75 | M G U Development Co | | Oil & Gas Operator | Jun 1987 |
| 76 | M G U Development Co And Mask Thomas B And Ma020 | | Oil & Gas Operator | Jun 1987 |
| 77 | M H Oil & Gas | Chanute, KS 66720 | Oil & Gas Operator | Aug 1998 |
| 78 | M H Oil & Gas LLC | Okeene, OK 73763-0684 | Oil & Gas Operator | Feb 2013 |
| 79 | M H W, Inc. | Dallas, TX 75230 | Oil & Gas Operator | Jul 1996 |
| 80 | M IV Ops., Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Mar 1998 |
| 81 | M J H Enterprises LC | | Oil Operator | Mar 2005 |
| 82 | M J M D Inc | Burlington, IA 52601 | Oil Operator | Jan 2013 |
| 83 | M K M LTD | | Oil & Gas Operator | Jun 1998 |
| 84 | M K M Oil Company | Casper, WY 82602 | Oil & Gas Operator | Jun 1996 |
| 85 | M K W Inc | Oklahoma City, OK 73112-8884 | Oil & Gas Operator | Dec 2009 |
| 86 | M L Energy | | Oil Operator | Feb 2015 |
| 87 | M L Energy LLC | | Oil Operator | Sep 2025 |
| 88 | M L Mayfield Petroleum Corp. | | Oil & Gas Operator | Aug 1991 |
| 89 | M M Energy Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Aug 2025 |
| 90 | M M Resources In | | Gas Operator | Feb 1990 |
| 91 | M P O'Meara, Jr. Inc. | | Oil & Gas Operator | Sep 2000 |
| 92 | M R Drilling Company | Monahans, TX 79756 | Oil & Gas Operator | Feb 1998 |
| 93 | M R Schalk | Albuquerque, NM 87125 | Oil & Gas Operator | Jul 2022 |
| 94 | M R Ventures LLC | Dallas, TX 75367 | Oil & Gas Operator | Aug 2025 |
| 95 | M S B Company | Slaton, TX 79364 | Oil & Gas Operator | Dec 2016 |
| 96 | M S Drilling Company | | Oil Operator | Feb 2025 |
| 97 | M S Exploration Inc | Lexington, OH 44904-9510 | Oil & Gas Operator | Dec 1999 |
| 98 | M T M Oil | Monahans, TX 79756 | Oil & Gas Operator | Nov 2025 |
| 99 | M T W Oil Co | Terral, OK 73569 | Oil Operator | Jun 2014 |
| 100 | M V Crum Gas Partners | Paintsville, KY 41240 | Gas Operator | Dec 2021 |