| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 901 | Young H Inc | Edmond, OK 73013 | Oil & Gas Operator | Oct 1993 |
| 902 | Zollinger Veldon Inc | Crescent, OK 73028-9280 | Oil & Gas Operator | Nov 2018 |
| 903 | ZP Disposal Systems LLC | Kingfisher, OK 73750 | Oil Operator | Feb 2026 |
| 904 | Zuhone William H | Mattoon, IL 61938-4019 | Oil & Gas Operator | Jan 2015 |