| 1 | L & B Oil Company Inc | Houston, TX 77019-3115 | Oil & Gas Operator | Aug 2024 |
| 2 | L & L Smith Energy Corporation | Muskogee, OK 74403-8479 | Oil & Gas Operator | Jan 2023 |
| 3 | L E Jones Operating Inc | Duncan, OK 73534 | Oil & Gas Operator | Sep 2024 |
| 4 | Lakeland Pipeline Inc | Hominy, OK 74035-1006 | Oil & Gas Operator | Jun 2023 |
| 5 | Lamamco Drilling Company | Skiatook, OK 74070 | Oil & Gas Operator | Aug 2024 |
| 6 | Lance Ruffel Oil & Gas LLC | Oklahoma City, OK 73102-5632 | Oil & Gas Operator | Sep 2024 |
| 7 | Landers & Musgrove | Okemah, OK 74859 | Oil & Gas Operator | Mar 2015 |
| 8 | Landers & Musgrove Oil Co. Inc | Okemah, OK 74859-0266 | Oil & Gas Operator | Jan 2018 |
| 9 | Lar-Mie Petroleum Inc | Tulsa, OK 74136 | Oil & Gas Operator | Aug 1998 |
| 10 | Lauck & Associates | Walnut Creek, CA 91789 | Oil & Gas Operator | Sep 2024 |
| 11 | Law E Edward | Newkirk, OK 74647-2056 | Oil Operator | Jul 2024 |
| 12 | Lawco Exploration Inc | Bentonville, AR 72712 | Oil & Gas Operator | May 2024 |
| 13 | Lawco Holdings LLC | Bentonville, AR 72712 | Oil Operator | Sep 2024 |
| 14 | LCB Resources LLC | Kingfisher, OK 73750-2322 | Oil & Gas Operator | Sep 2024 |
| 15 | Le Norman Energy Corporation | Duncan, OK 73534 | Oil & Gas Operator | Nov 2014 |
| 16 | Leake Keith D | Winfield, KS 67156-8871 | Oil Operator | Apr 2004 |
| 17 | Lee Energy Exploration LTD | Oklahoma City, OK 73102-7114 | Oil & Gas Operator | Jul 2008 |
| 18 | Legacy - M & K Corporation | Dallas, TX 75231-0969 | Oil & Gas Operator | Aug 2024 |
| 19 | Legacy Energy Services LLC | Stillwater, OK 74074 | Oil & Gas Operator | Aug 2024 |
| 20 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Nov 2024 |
| 21 | Lewis Oil Corp. | Stillwater, OK 74076 | Oil & Gas Operator | Aug 2024 |
| 22 | Liberty Operating Inc | Norman, OK 73069-8225 | Oil & Gas Operator | Mar 2022 |
| 23 | Little Bear Resources LLC | Stillwater, OK 74074-1388 | Oil & Gas Operator | Feb 2013 |
| 24 | Little River Energy Company | Drumright, OK 74030 | Oil & Gas Operator | Sep 2024 |
| 25 | Lynx Energy Company, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2008 |