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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Lone Wolf Oil & Gas Co., LLC | Kansas | 1,105 BBLs | 0 MCF | Jan 2010 - May 2026 |
| Longfellow Energy, LP | New Mexico | 138,644 BBLs | 575,472 MCF | Jul 2017 - Jul 2026 |
| Longs Peak Resources LLC | Wyoming | 17,361 BBLs | 26,895 MCF | Feb 2016 - Jul 2026 |
| Louisiana Jordan Oil Company, Inc. | Louisiana | 1,207 BBLs | 0 MCF | Jan 2013 - Dec 2024 |
| Luff Exploration Company | North Dakota | 8,801 BBLs | 6,721 MCF | Dec 1996 - Jul 2026 |
| Lynx Operating Co., Inc. | New Mexico | 2,276 BBLs | 2,499 MCF | Jan 1999 - Aug 2026 |
| M & G DRLG Co Inc | New Mexico | 76 BBLs | 59,610 MCF | May 1995 - Jul 2026 |
| M & K Oil Company LLC | Wyoming | 25,297 BBLs | 78,749 MCF | Jan 1978 - Jul 2026 |
| M & M Exploration, Inc. | Kansas | 1,326 BBLs | 15,944 MCF | Mar 2002 - May 2026 |
| M & M Oil Company, L.L.C. | Louisiana | 2,996 BBLs | 0 MCF | Aug 1994 - Jan 2025 |
| M E Klein & Associates, Inc | Kansas | 797 BBLs | 4,889 MCF | Jan 1980 - May 2026 |
| M G Oil Inc | Kansas | 7,148 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Mack Energy Corp | New Mexico | 136,088 BBLs | 368,095 MCF | Jan 1993 - Jul 2026 |
| Mad Operators LLC | Kansas | 11,093 BBLs | 513 MCF | Jan 2020 - May 2026 |
| Magna Operating, LLC | Louisiana | 4,137 BBLs | 0 MCF | Sep 2010 - Dec 2024 |
| Magpie Operating, Inc | Colorado | 14,130 BBLs | 114,322 MCF | Jan 1999 - Jul 2026 |
| Mai Oil Operations, Inc. | Kansas | 47,787 BBLs | 7,745 MCF | Jan 1980 - May 2026 |
| Manning, Gregory | Kansas | 1,775 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Manzanita Operating, LLC | New Mexico | 7,122 BBLs | 0 MCF | Apr 2022 - Jul 2026 |
| Manzano LLC | New Mexico | 5,774 BBLs | 11,561 MCF | Mar 2005 - Jul 2026 |
| Mar-Lou Oil Co., LLC | Kansas | 963 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Maralex Resources, Inc | Colorado | 0 BBLs | 43,558 MCF | Jan 1999 - Jul 2026 |
| Marathon Oil Company | North Dakota | 1,670,729 BBLs | 4,380,206 MCF | Jul 1979 - Jul 2026 |
| Marathon Oil Permian LLC | New Mexico | 738,445 BBLs | 3,101,017 MCF | Jul 2017 - Jul 2026 |
| Marlin Exploration, LLC | Louisiana | 2,976 BBLs | 2,082 MCF | Mar 2015 - Jan 2025 |
| Marlin Operating, LLC | New Mexico | 22,904 BBLs | 35,893 MCF | Jan 2022 - Jul 2026 |
| Marlin Resources, L.L.C. | Louisiana | 2,463 BBLs | 0 MCF | Apr 2008 - Jan 2025 |
| Marlo Operating Company, LLC | North Dakota | 947 BBLs | 55 MCF | Mar 2026 - Jul 2026 |
| Marquee Corporation | Louisiana | 1,825 BBLs | 268 MCF | Jun 1990 - Dec 2024 |
| Marshall & Winston Inc | New Mexico | 36,503 BBLs | 108,529 MCF | Jan 1993 - Jul 2026 |
| Matador Production Company | New Mexico | 4,840,081 BBLs | 20,985,662 MCF | Mar 2006 - Jul 2026 |
| Matrix Production Company | Wyoming | 21,164 BBLs | 25,004 MCF | Jan 1994 - Jul 2026 |
| Maverick Permian LLC | New Mexico | 121,696 BBLs | 117,891 MCF | Jul 2022 - Jul 2026 |
| Maxim Drilling & Expl Inc | Wyoming | 1,246 BBLs | 16,568 MCF | Jun 1982 - Jul 2026 |
| Maximus Operating LTD | Wyoming | 9,728 BBLs | 386 MCF | Jul 2014 - Jul 2026 |
| Maximus Operating, LTD. | Louisiana | 526 BBLs | 36,971 MCF | Jan 2006 - Jan 2025 |
| McCormick Production Company, Inc. | Louisiana | 4,393 BBLs | 0 MCF | Jan 2009 - Dec 2024 |
| McCoy Petroleum Corporation | Kansas | 24,879 BBLs | 36,933 MCF | Jan 1980 - May 2026 |
| McFadden Oil Co. | Kansas | 3,115 BBLs | 0 MCF | Jan 1980 - May 2026 |
| McGinness Energy Company, Inc. | Kansas | 1,094 BBLs | 34,209 MCF | Jan 2020 - May 2026 |
| McGowan Working Partners, Inc. | Louisiana | 22,202 BBLs | 40,083 MCF | Jan 2001 - Dec 2024 |
| MCR, LLC | Montana | 6,515 BBLs | 52,036 MCF | Oct 2003 - Jul 2026 |
| MDS Energy Development LLC | Colorado | 7,963 BBLs | 14,000 MCF | Nov 2022 - Jul 2026 |
| MDS Energy Development LLC | Wyoming | 21,883 BBLs | 36,290 MCF | Jan 2025 - Jul 2026 |
| Me-Tex Oil & Gas Inc | New Mexico | 3,231 BBLs | 20,634 MCF | Jan 1993 - Aug 2026 |
| Medora Minerals, LLC | North Dakota | 6,384 BBLs | 76 MCF | Nov 2018 - Jul 2026 |
| Mercury Resources LLC | North Dakota | 11,235 BBLs | 27,305 MCF | Dec 2018 - Jul 2026 |
| Meridian Energy Inc. | Kansas | 4,781 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Merit Energy Company | Wyoming | 393,427 BBLs | 224,896 MCF | Jan 1981 - Jul 2026 |
| Merit Energy Company, LLC | Kansas | 136,229 BBLs | 633,139 MCF | Jan 1980 - May 2026 |