| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Abraxas Petroleum Corporation | San Antonio, TX 78259 | Oil & Gas Operator | Oct 2025 |
| 2 | Ansbro Petroleum Company, LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2008 |
| 3 | Anschutz Oil Co. | Oil & Gas Operator | Jul 1984 | |
| 4 | Arsenal Energy USA Inc. | Oil & Gas Operator | Aug 2016 |