| 1 | L & L Smith Energy Corporation | | Oil & Gas Operator | Jan 2023 |
| 2 | Ladder Energy Company | Tulsa, OK 74120-4281 | Oil & Gas Operator | Jan 2018 |
| 3 | Lake Country Disposal II LLC | | Oil Operator | Jan 2024 |
| 4 | Lake Country Disposal LLC | | Oil Operator | Jan 2024 |
| 5 | Lance Ruffel Oil & Gas LLC | Oklahoma City, OK 73102-5632 | Oil & Gas Operator | Jan 2024 |
| 6 | Landers & Musgrove | Okemah, OK 74859 | Oil & Gas Operator | Mar 2015 |
| 7 | Landers & Musgrove Oil Co. Inc | Okemah, OK 74859-0266 | Oil & Gas Operator | Jan 2018 |
| 8 | Las Colinas Oil Corp. | Irving, TX 75062 | Oil & Gas Operator | Mar 2015 |
| 9 | LCB Resources LLC | | Oil & Gas Operator | Jan 2024 |
| 10 | Le Norman Energy Corporation | Duncan, OK 73534 | Oil & Gas Operator | Nov 2014 |
| 11 | Legacy - M & K Corporation | Dallas, TX 75231-0969 | Oil & Gas Operator | Dec 2023 |
| 12 | Legacy Energy Services LLC | | Oil & Gas Operator | Jan 2024 |
| 13 | Legacy Reserves Operating LP | Denver, CO 80202 | Oil & Gas Operator | Apr 2024 |
| 14 | Likins-Foster Honolulu Corp | Foster City, CA 94404 | Oil & Gas Operator | Feb 2015 |
| 15 | Lindenmuth & Associates Inc | Austin, TX 78703 | Oil & Gas Operator | Feb 2024 |
| 16 | Lion Petroleum Company | Oklahoma City, OK 73120-4503 | Oil & Gas Operator | Aug 2015 |
| 17 | Long Resources Inc | San Antonio, TX 78230-2890 | Oil & Gas Operator | Jan 2024 |
| 18 | Lu-Ray Petroleum LLC | Oklahoma City, OK 73121-1607 | Oil & Gas Operator | Jan 2024 |
| 19 | LX4 LLC | | Oil Operator | Jan 2024 |