| 1 | L B Simmons Energy Inc | Midland, TX BAD ADDR | Oil & Gas Operator | Oct 1996 |
| 2 | L R French Jr | Midland, TX 79701 | Oil & Gas Operator | Aug 2014 |
| 3 | L.E. Jones Operating, Inc. | Duncan, OK 73534 | Oil & Gas Operator | Sep 2025 |
| 4 | Landmark Energy Partners, LLC | Edmond, OK 73013 | Oil Operator | Jul 2025 |
| 5 | Lanexco Inc. Dba Lanexco New Mexico | Sealy, TX 77474 | Oil & Gas Operator | Mar 2022 |
| 6 | Lanexco, Inc. | Sealy, TX 77474 | Oil & Gas Operator | Dec 2025 |
| 7 | Lariat Petroleum Inc | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2024 |
| 8 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | Dec 2025 |
| 9 | Larry Marker Dba Marker Oil | Roswell, NM 88202 | Oil & Gas Operator | Jul 2017 |
| 10 | Las Animas Production Company | Midland, TX 79705 | Oil & Gas Operator | Mar 1995 |
| 11 | Latigo Petroleum, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Aug 2025 |
| 12 | Lawson Operating LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2015 |
| 13 | Layton Enterprises, Inc. | Lubbock, TX 79423 | Oil & Gas Operator | Apr 2007 |
| 14 | Lbo New Mexico Inc | Midland, TX BAD ADDR | Oil & Gas Operator | Dec 1996 |
| 15 | Leaco Operating, LLC | Houston, TX 77056 | Oil Operator | Sep 2025 |
| 16 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Dec 2025 |
| 17 | Leigh Operating Co | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 18 | Leopoldo P Bustamante | Midland, TX 79710 | Oil & Gas Operator | Apr 2012 |
| 19 | Lime Rock Resources A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Aug 2025 |
| 20 | Lime Rock Resources II-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Aug 2025 |
| 21 | Lindenmuth & Associates Inc | Austin, TX 78703 | Oil & Gas Operator | Jun 2025 |
| 22 | Linn Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2019 |
| 23 | Lion Production, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2006 |
| 24 | Llano Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 25 | LLJ Ventures, LLC Dba Marker Oil & Gas | Roswell, NM 88202 | Oil & Gas Operator | Apr 2022 |
| 26 | Lobo Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 27 | Lodestone Operating, Inc. | Portland, TX 78374 | Oil & Gas Operator | Dec 2025 |
| 28 | Lone Star Oil & Gas, Inc. | Greenville, KY 42345 | Oil & Gas Operator | Dec 2023 |
| 29 | Long Trust The | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2008 |
| 30 | Lothian Oil Texas I, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Mar 2008 |
| 31 | Louis Dreyfus Natural Gas Inc | Houston, TX 770103088 | Oil & Gas Operator | Sep 1997 |
| 32 | Lynx Operating Co., Inc. | Dallas, TX 75206 | Oil & Gas Operator | Dec 2025 |
| 33 | Lynx Petroleum Consultants Inc. | Hobbs, NM 88241 | Oil & Gas Operator | Feb 2024 |