| 1 | La VIda Energy Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 1993 |
| 2 | Lakeshore Operating, LLC | Wichita, KS 67203 | Oil & Gas Operator | Oct 2025 |
| 3 | Lanexco, Inc. | Sealy, TX 77474 | Oil & Gas Operator | Oct 2025 |
| 4 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | Oct 2025 |
| 5 | Latigo Petroleum Texas, LP | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 6 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Oct 2025 |
| 7 | Leonard Brothers Operating Co. | Fort Worth, TX 76101 | Oil & Gas Operator | Oct 2025 |
| 8 | Libertad Operating LLC | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 9 | Limark Corporation | Midland, TX 79702 | Oil & Gas Operator | Dec 2003 |
| 10 | Lime Rock Resources II-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jun 2025 |
| 11 | Lime Rock Resources IV-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 12 | Limestone Exploration II, LLC | Midland, TX 79704 | Oil & Gas Operator | Jun 2019 |
| 13 | Lindenmuth & Associates Inc | Austin, TX 78703 | Oil & Gas Operator | Jun 2025 |
| 14 | Linn Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2019 |
| 15 | Linn Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2017 |
| 16 | Lion Production, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2006 |
| 17 | Live Oak Gas Company | Dallas, TX 75251 | Oil & Gas Operator | Oct 2025 |
| 18 | LNH Oil Company | Midland, TX 79708 | Oil & Gas Operator | Jan 2006 |
| 19 | Loin Energy Corporation | La Grange, TX 78945 | Oil & Gas Operator | Oct 2025 |
| 20 | Lomak Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 1998 |
| 21 | Lothian Oil Texas I, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Mar 2008 |
| 22 | Lumbley, W. F. | Hobbs, NM 88242 | Oil & Gas Operator | Jan 2008 |
| 23 | Lynx Energy Company, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2008 |
| 24 | Lynx Operating Co., Inc. | Dallas, TX 75206 | Oil & Gas Operator | Oct 2025 |
| 25 | Lynx Petroleum Consultants Inc. | Hobbs, NM 88241 | Oil & Gas Operator | Feb 2024 |
| 26 | LZB Energy, LLC | Austin, TX 78737 | Gas Operator | Jul 2020 |
| 27 | LZS Corporation | Tulsa, OK 74105 | Oil & Gas Operator | Jan 2007 |