| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | American Oil & Gas, Inc. | Oil & Gas Operator | Nov 2010 | |
| 2 | Amoco Production Co. | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 3 | Ansbro Petroleum Company, LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2008 |
| 4 | Anschutz Exploration Corporation | Denver, CO 80202 | Oil & Gas Operator | Oct 2025 |
| 5 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 6 | Armstrong Operating, Inc. | Dickinson, ND 58602 | Oil & Gas Operator | Aug 2025 |