| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Anschutz Exploration Corporation | Denver, CO 80202 | Oil & Gas Operator | Sep 2026 |
| 2 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Sep 2026 |
| 3 | B5 Holdings LLC | Oil Operator | Jul 2026 | |
| 4 | Big Horn Oil And Gas Inc. | Gas Operator | Dec 2025 | |
| 5 | Bunker Oil Corp. | Oil & Gas Operator | Dec 1994 | |
| 6 | Citadel Exploration Inc. | Oil Operator | Dec 2025 | |
| 7 | Elliott Underground LLC | Oil Operator | Jul 2026 | |
| 8 | Lario Oil & Gas Company | Denver, CO 80206 | Oil & Gas Operator | Sep 2026 |
| 9 | McDonald Ranch Partnership | Oil Operator | Dec 2025 | |
| 10 | Panoche Vallecitos Oil Co. | Oil & Gas Operator | Dec 2025 | |
| 11 | Patriot Resources LLC | Oil & Gas Operator | Jul 2026 | |
| 12 | Tannehill Oil Company | Oil & Gas Operator | Dec 1991 |