| 18101 | Maggard Supply & Oil Company | Mannford, OK 74044-1407 | Oil & Gas Operator | Nov 2014 |
| 18102 | Maggard VIrginia J | Mannford, OK 74044-3027 | Oil Operator | Oct 2025 |
| 18103 | Maggert Energy Corp. | Spring, TX 77387 | Gas Operator | Jun 1998 |
| 18104 | Magic Circle Energy | Oklahoma City, OK 73185 | Oil & Gas Operator | Dec 1983 |
| 18105 | Magic City Oil & Gas | Amarillo, TX 79109 | Oil & Gas Operator | Dec 2025 |
| 18106 | Magic Investments LLC | Edmond, OK 73013 | Oil & Gas Operator | Sep 2025 |
| 18107 | Magic Oil & Gas Inc. | Houston, TX 77079 | Oil & Gas Operator | Jan 2001 |
| 18108 | Magma Resources LLC | Paoli, OK 73074 | Oil & Gas Operator | Apr 2025 |
| 18109 | Magna Diversified Group, Inc. | Jacksonville, TX 75766 | Oil & Gas Operator | Oct 2013 |
| 18110 | Magna Oil & Gas Corporation | Irving, TX 75017 | Oil & Gas Operator | Feb 2016 |
| 18111 | Magna Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 18112 | Magnatex Corp | Midland, TX 79702-1311 | Oil & Gas Operator | Feb 1995 |
| 18113 | Magnatex Petrole | | Oil Operator | Jun 1994 |
| 18114 | Magnatex Petroleum | | Oil Operator | Apr 1993 |
| 18115 | Magness Petroleum Company | | Oil & Gas Operator | Dec 1994 |
| 18116 | Magnet Oil LP | Bronte, TX 76933 | Oil & Gas Operator | Dec 2025 |
| 18117 | Magnolia Oil & Gas Operating LLC | Houston, TX 77046 | Oil & Gas Operator | Dec 2025 |
| 18118 | Magnolia Petroleum Inc | Tulsa, OK 74106-2433 | Oil Operator | Jun 2018 |
| 18119 | Magnolia Production Co | Atlanta, TX 75551 | Oil & Gas Operator | Dec 2025 |
| 18120 | Magnolia Production Company LLC | | Oil & Gas Operator | Nov 2024 |
| 18121 | Magnum DRLG Of Ohio, Inc | Ashland, KY 41102 | Oil & Gas Operator | Dec 2023 |
| 18122 | Magnum Energy Inc | Norman, OK 73072-2403 | Oil & Gas Operator | Nov 2025 |
| 18123 | Magnum Engineering Company | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Dec 2025 |
| 18124 | Magnum Exploration Kansas, LLC | Lipan, TX 76462 | Oil Operator | Oct 2016 |
| 18125 | Magnum Gas Pipeline, L.L.C. | | Oil Operator | Dec 2024 |
| 18126 | Magnum Hunter Production, Inc. | Irving, TX 75014 | Oil & Gas Operator | Dec 2019 |
| 18127 | Magnum Hunter Resources Corporation | | Oil & Gas Operator | Nov 2019 |
| 18128 | Magnum Minerals, Inc. | | Oil & Gas Operator | May 1998 |
| 18129 | Magnum Oil & Gas | Flower Mound, TX 75028 | Oil & Gas Operator | Jul 2000 |
| 18130 | Magnum Oil, LLC | Hartford, KY 42347 | Oil Operator | Dec 2023 |
| 18131 | Magnum Oilfield Services LLC | Bakersfield, CA 93309 | Oil Operator | Dec 2025 |
| 18132 | Magnum Operating, LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Dec 2025 |
| 18133 | Magnum Petroleum, Inc. | Palm Desert, CA 92260 | Oil & Gas Operator | Nov 2013 |
| 18134 | Magnum Producing & Operating Co. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Jan 2004 |
| 18135 | Magnum Producing, LP | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Dec 2025 |
| 18136 | Magnum Production & Well Service | Iowa Park, TX 76367 | Oil & Gas Operator | Dec 2025 |
| 18137 | Magnusson Karl E | | Oil Operator | Apr 1987 |
| 18138 | Magpie Operating, Inc | | Oil & Gas Operator | Oct 2025 |
| 18139 | Magruder '81, LTD. | Midland, TX 79701 | Oil & Gas Operator | Jan 1995 |
| 18140 | Magruder, Edwin H., Jr. | Midland, TX 79701 | Oil & Gas Operator | Oct 2019 |
| 18141 | Maguire James Q Inc | Norman, OK 73070-1748 | Oil & Gas Operator | Jun 2011 |
| 18142 | Maguire Oil Company | Dallas, TX 75270 | Oil & Gas Operator | Mar 2015 |
| 18143 | Maha Energy Us Inc | | Oil Operator | Nov 2023 |
| 18144 | Mahan, Janet L | | Oil & Gas Operator | Oct 2025 |
| 18145 | Mahfouz Energy Company | Houston, TX 77255 | Oil & Gas Operator | Nov 2020 |
| 18146 | Mahl, Matthew J. | Springville, NY 14141 | Gas Operator | Dec 2024 |
| 18147 | Mahler & Scott | Ruidoso, NM 88355 | Oil & Gas Operator | Aug 2003 |
| 18148 | Mahler, Kelly Operating | Graham, TX 76450 | Oil & Gas Operator | Mar 2017 |
| 18149 | Mahue Construction Company | Huntington, WV 25724-2345 | Oil & Gas Operator | Dec 2021 |
| 18150 | Mai Oil Operations, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Sep 2025 |
| 18151 | Mai Operations | | Oil Operator | Dec 1996 |
| 18152 | Maier Resources Inc | Oklahoma City, OK 73157-2996 | Oil & Gas Operator | Mar 2015 |
| 18153 | Maier, H Paul | | Oil Operator | Dec 2023 |
| 18154 | Main Energy, Inc. | Houston, TX 77079 | Oil & Gas Operator | May 2009 |
| 18155 | Main Street Royalty, Inc. | Lockhart, TX 78644 | Oil & Gas Operator | Aug 1999 |
| 18156 | Maines, Wendy R. | Irving, NY 14081 | Gas Operator | Dec 2024 |
| 18157 | Mainspring LLC | Uhrichsville, OH 44683 | Oil & Gas Operator | Dec 2024 |
| 18158 | Maintainer Energy Res Corp Inc | Morris, OK 74445-2663 | Oil Operator | Oct 2025 |
| 18159 | Majestic Energy Company LLC | Keifer, OK 74041 | Oil Operator | Oct 2025 |
| 18160 | Majestic Energy Corporation | Shreveport, LA 71164 | Oil & Gas Operator | May 2013 |
| 18161 | Majestic Management Corp | | Oil Operator | Dec 2013 |
| 18162 | Majestic Oil & Gas Holding Co. | Midland, TX 79705 | Oil Operator | Dec 2025 |
| 18163 | Majestic Oil & Gas, Inc. | Pampa, TX 79066 | Oil & Gas Operator | May 2007 |
| 18164 | Majestic Petroleum Corporation | Dallas, TX 75230 | Oil & Gas Operator | Oct 1996 |
| 18165 | Majestic Petroleum Operations Inc | Story, WY 82842 | Gas Operator | Mar 2007 |
| 18166 | Majestic Resources, Inc. | Dripping SPGS, TX 78620 | Oil & Gas Operator | Nov 2007 |
| 18167 | Majoil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 1996 |
| 18168 | Major Oil Co LLC | Drumright, OK 74030 | Oil & Gas Operator | May 2025 |
| 18169 | Major Oil Compan | | Oil Operator | Mar 1988 |
| 18170 | Majors Eugene E | Holdenville, OK 74848-9603 | Oil & Gas Operator | Oct 2025 |
| 18171 | Majors Gary E | Holdenville, OK 74848-9603 | Oil & Gas Operator | Aug 2025 |
| 18172 | Majors Jimmy R | Osceola, NE 68651-0726 | Oil & Gas Operator | Sep 2000 |
| 18173 | Majors John Dba Majors Production Co | Weleetka, OK 74880 | Oil & Gas Operator | Oct 2025 |
| 18174 | Majors Michael | Holdenville, OK 74848-0531 | Oil & Gas Operator | Sep 1994 |
| 18175 | Majors, Linda K | | Oil Operator | Aug 2025 |
| 18176 | Mak Oil & Gas Co | | Oil Operator | Mar 2009 |
| 18177 | Mak-J Energy Partners(TX),LTD. | Denver, CO 80206 | Oil & Gas Operator | Sep 2013 |
| 18178 | Mak-J Energy Wyoming LLC | Denver, CO 80620 | Oil & Gas Operator | Nov 2012 |
| 18179 | Makar Production Company | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 18180 | Makk Oil Production Inc. | Monahans, TX 79756 | Oil & Gas Operator | Dec 2025 |
| 18181 | Mako Exploration Management, LLC | Shreveport, LA 71105 | Oil & Gas Operator | Dec 2025 |
| 18182 | Mako Operating Company, LLC | Andover, KS 67002 | Gas Operator | May 2002 |
| 18183 | Makoil, Inc. | Lake Forest, CA 92630 | Oil & Gas Operator | Jul 2007 |
| 18184 | Maledon Enterprises | Austin, TX 78738 | Oil & Gas Operator | Feb 1996 |
| 18185 | Malka Production Company | Oklahoma City, OK 73101-0248 | Oil & Gas Operator | Jan 2000 |
| 18186 | Mallard Drilling Corp. | | Oil & Gas Operator | Jan 1993 |
| 18187 | Mallard DRLG & Central Oil Co | | Gas Operator | Mar 1978 |
| 18188 | Mallard Exploration, Inc. | | Oil & Gas Operator | Sep 1975 |
| 18189 | Mallard Oil & Gas | Cody, WY 82414-9640 | Oil & Gas Operator | Oct 2019 |
| 18190 | Mallard Operating LLC | | Oil & Gas Operator | Nov 2024 |
| 18191 | Mallard Petroleum, Inc. | | Oil & Gas Operator | Apr 1986 |
| 18192 | Mallett Luke-Dba Mallett Energy | New Concord, OH 43762 | Oil & Gas Operator | Dec 2016 |
| 18193 | Mallon Oil Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2005 |
| 18194 | Mallonee-Mahoney | | Oil & Gas Operator | Dec 1994 |
| 18195 | Mallorn Energy LLC | Edmond, OK 73034 | Oil & Gas Operator | Oct 2025 |
| 18196 | Mallory, Meredith, Jr. | San Antonio, TX 78209 | Oil & Gas Operator | Jul 2002 |
| 18197 | Malmac | | Gas Operator | Mar 1991 |
| 18198 | Malmac Energy Corp. | | Oil & Gas Operator | Jul 1987 |
| 18199 | Malone Donald J | | Oil Operator | Nov 1993 |
| 18200 | Malone Oil & Gas Exploration, Inc. | | Oil Operator | Dec 2018 |