| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 2 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Oct 2025 |
| 3 | Leland Oil & Gas, LLC | Oil & Gas Operator | Aug 2025 | |
| 4 | Liberty Resources LLC | Oil & Gas Operator | May 2014 | |
| 5 | Liberty Resources Management Co LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2025 |
| 6 | Lime Rock Resources V-A, LP | Oil & Gas Operator | Aug 2025 | |
| 7 | Lloyd H. Smith | Oil & Gas Operator | Mar 1972 | |
| 8 | Lyco Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Jun 2015 |