| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Omni Operating Company | Osage, WY 82723 | Oil & Gas Operator | Sep 2001 |
| 2 | Oneida Energy Corporation | Tulsa, OK 74137 | Oil & Gas Operator | Jul 2003 |
| 3 | Ott Inc | Casper, WY 82602 | Oil Operator | Dec 2024 |
| 4 | Ovintiv USA Inc. | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 5 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Jun 2025 |