| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Sappington Crude Oil Inc | Oil & Gas Operator | Dec 2025 | |
| 2 | Sappington Henry | Oil Operator | Dec 2010 | |
| 3 | Sappington Walter B Dianne M | Oil Operator | Dec 2025 | |
| 4 | Sterling Operators Inc | Oil Operator | Feb 2026 | |
| 5 | Summit Essexville Inc | Oil Operator | Dec 2014 | |
| 6 | Summit Petroleum Corp And Muskegon Development C | Oil Operator | Dec 2006 |