| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Ultra Oil & Gas, Inc. | Centerton, AR 72719 | Oil & Gas Operator | Oct 2025 |
| 2 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Oct 2025 |
| 3 | Upstream Properties, LLC | Southlake, TX 76092 | Oil & Gas Operator | Oct 2025 |
| 4 | Uptex Operating, L.P. | Dallas, TX 75201 | Oil & Gas Operator | May 2010 |