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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Koda Resources Operating, LLC | North Dakota | 21,501 BBLs | 25,063 MCF | Sep 2019 - Apr 2022 |
| Kraken Operating, LLC | Montana | 173,078 BBLs | 227,685 MCF | Sep 2013 - Feb 2022 |
| Kraken Operating, LLC | North Dakota | 296,066 BBLs | 857,043 MCF | Sep 2016 - Apr 2022 |
| L. D. Drilling, Inc. | Kansas | 17,110 BBLs | 0 MCF | Jan 1980 - Feb 2022 |
| Lachenmayr Oil LLC | Kansas | 3,473 BBLs | 0 MCF | Jan 1980 - Feb 2022 |
| Lafayette Oilfield Contractors, Inc. | Louisiana | 5,201 BBLs | 0 MCF | Nov 2020 - Mar 2022 |
| Lambda Energy Resources LLC | Michigan | 46,720 BBLs | 439,308 MCF | Sep 2018 - Apr 2022 |
| Land And Natural Resource Development, Inc. | Alabama | 3,978 BBLs | 65,540 MCF | Jul 1977 - Mar 2022 |
| Landmark Resources, Inc. | Kansas | 11,930 BBLs | 5,028 MCF | Jan 1980 - Feb 2022 |
| Lario Oil & Gas Company | Kansas | 24,354 BBLs | 35,974 MCF | Jan 1980 - Feb 2022 |
| Lawco Holdings, LLC | Kansas | 2,324 BBLs | 0 MCF | Aug 2014 - Feb 2022 |
| Laymon Oil II, LLC | Kansas | 12,943 BBLs | 0 MCF | Jan 1980 - Feb 2022 |
| LB Exploration, Inc. | Kansas | 2,650 BBLs | 28,325 MCF | Jan 1980 - Feb 2022 |
| Lebsack Oil Production Inc. | Kansas | 4,956 BBLs | 2,329 MCF | Jan 1980 - Feb 2022 |
| Legacy Reserves Operating LP | Montana | 11,876 BBLs | 6,071 MCF | Jun 2012 - Mar 2022 |
| Legacy Reserves Operating LP | North Dakota | 7,679 BBLs | 4,686 MCF | Oct 2006 - Apr 2022 |
| Legacy Reserves Operating LP | Wyoming | 24,113 BBLs | 777 MCF | Jan 1998 - Apr 2022 |
| Legacy Reserves Operating, LP | New Mexico | 102,541 BBLs | 347,723 MCF | May 2006 - Apr 2022 |
| LH Operating, LLC | New Mexico | 36,741 BBLs | 46,606 MCF | Nov 2019 - Apr 2022 |
| Liberty Resources Management Company, LLC | North Dakota | 87,995 BBLs | 283,014 MCF | Jun 2014 - May 2022 |
| Lime Rock Resources III-A, L.P. | North Dakota | 229,411 BBLs | 280,921 MCF | Mar 2015 - Apr 2022 |
| Linde Inc | Colorado | 0 BBLs | 110,419 MCF | Jan 1999 - Apr 2022 |
| Little Chief Energy Corporation | Kansas | 2,210 BBLs | 0 MCF | Jan 2010 - Feb 2022 |
| Llox, L.L.C. | Louisiana | 49,155 BBLs | 691,723 MCF | Feb 2015 - Mar 2022 |
| Lobo Operating, Inc. | Louisiana | 7,108 BBLs | 1,104 MCF | Mar 1995 - Mar 2022 |
| Lobo Production, Inc | Kansas | 0 BBLs | 32,781 MCF | Jan 1980 - Feb 2022 |
| Locin Oil Corporation | Colorado | 646 BBLs | 81,733 MCF | May 2000 - Apr 2022 |
| Loeb LLC* Herman L | Colorado | 1,924 BBLs | 13,297 MCF | Jan 1999 - May 2022 |
| Logos Operating, LLC | New Mexico | 33,292 BBLs | 3,012,697 MCF | Jul 2012 - Apr 2022 |
| Loil Oil LLC | Wyoming | 4,035 BBLs | 1,337 MCF | Nov 2016 - Apr 2022 |
| Lonewolf Operating, LLC | Montana | 2,623 BBLs | 14,598 MCF | Aug 2018 - Mar 2022 |
| Longfellow Energy, LP | New Mexico | 38,323 BBLs | 78,436 MCF | Jul 2017 - Apr 2022 |
| Longs Peak Resources LLC | Wyoming | 40,120 BBLs | 24,407 MCF | Feb 2016 - Apr 2022 |
| Longview Production Company | Arkansas | 628 BBLs | 17,329 MCF | Jan 2001 - Dec 2021 |
| Luff Exploration Company | North Dakota | 10,958 BBLs | 8,928 MCF | Dec 1996 - May 2022 |
| Lynx Operating Co., Inc. | New Mexico | 2,072 BBLs | 1,354 MCF | Jan 1999 - Apr 2022 |
| M & G DRLG Co Inc | New Mexico | 48 BBLs | 64,360 MCF | May 1995 - Apr 2022 |
| M & K Oil Company LLC | Wyoming | 23,452 BBLs | 74,155 MCF | Jan 1978 - Apr 2022 |
| M & M Exploration, Inc. | Kansas | 1,416 BBLs | 25,696 MCF | Mar 2002 - Feb 2022 |
| M & M Oil Company, L.L.C. | Louisiana | 3,359 BBLs | 0 MCF | Aug 1994 - Apr 2022 |
| M G Oil Inc | Kansas | 6,668 BBLs | 0 MCF | Jan 1980 - Feb 2022 |
| Mack Energy Corp | New Mexico | 105,531 BBLs | 301,846 MCF | Jan 1993 - Apr 2022 |
| Magpie Operating, Inc | Colorado | 15,319 BBLs | 89,998 MCF | Jan 1999 - Apr 2022 |
| Mai Oil Operations, Inc. | Kansas | 41,761 BBLs | 548 MCF | Jan 1980 - Feb 2022 |
| Mar-Lou Oil Co., LLC | Kansas | 2,151 BBLs | 0 MCF | Jan 1980 - Feb 2022 |
| Maralex Resources, Inc | Colorado | 0 BBLs | 327,291 MCF | Jan 1999 - Apr 2022 |
| Marathon Oil Company | North Dakota | 2,321,375 BBLs | 4,493,319 MCF | Jul 1979 - Apr 2022 |
| Marathon Oil Permian LLC | New Mexico | 427,712 BBLs | 1,847,031 MCF | Jul 2017 - Apr 2022 |
| Marlin Exploration, LLC | Louisiana | 2,960 BBLs | 3,134 MCF | Mar 2015 - Apr 2022 |
| Marlin Resources, L.L.C. | Louisiana | 2,947 BBLs | 0 MCF | Apr 2008 - Apr 2022 |