| 1 | L.C.S. Production Company | Abilene, TX 79608 | Oil & Gas Operator | Oct 2025 |
| 2 | Ladd Oil & Gas Corporation | Midland, TX 79711 | Oil & Gas Operator | Dec 2021 |
| 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 | Last Mile Production, LLC | Southlake, TX 76092 | Oil & Gas Operator | Oct 2025 |
| 6 | Lavanco Energy, Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2006 |
| 7 | Lavanco Energy, LTD. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2024 |
| 8 | Lawrence, C. F. & Assoc. Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Oct 2025 |
| 9 | LDF Energy, LLC | Midland, TX 79707 | Oil & Gas Operator | Oct 2025 |
| 10 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Oct 2025 |
| 11 | Limark Corporation | Midland, TX 79702 | Oil & Gas Operator | Dec 2003 |
| 12 | Lime Rock Resources A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jun 2025 |
| 13 | Linn Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2019 |
| 14 | Linn Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2017 |
| 15 | Lion Production, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2006 |
| 16 | Littlepage, Tommy | Graham, TX 76450 | Oil & Gas Operator | May 1996 |
| 17 | Live Oak Gas Company | Dallas, TX 75251 | Oil & Gas Operator | Oct 2025 |
| 18 | Lizard Lick Transport, LLC | Grandfalls, TX 79742 | Oil & Gas Operator | Oct 2025 |
| 19 | Llano Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 20 | Lonesome B, LLC | Monahans, TX 79756 | Oil & Gas Operator | Oct 2025 |
| 21 | Lre Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Nov 2016 |
| 22 | Lyn-San Company | Midland, TX 79708 | Oil & Gas Operator | Dec 2018 |
| 23 | Lynx Oil Co., Inc. | Denton, TX 76207 | Oil & Gas Operator | Sep 2003 |