| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Samuel Gary Jr. & Associates, Inc. | Denver, CO 80202 | Oil & Gas Operator | Feb 2026 |
| 2 | Santa Fe Pipe & | Oil & Gas Operator | Dec 1991 | |
| 3 | Scheck Oil Operation | Oil & Gas Operator | Feb 2026 | |
| 4 | Schmitt Carmen I | Oil Operator | Dec 1996 | |
| 5 | Siemsen Operating, LLC | Holyrood, KS 67450 | Oil Operator | Feb 2026 |
| 6 | Smith Oil Operations | Oil & Gas Operator | Feb 2026 | |
| 7 | Smith Richard F | Oil Operator | Jun 1995 | |
| 8 | Smith, Darrin R | Wilson, KS 67490 | Oil Operator | Jan 2026 |
| 9 | Standard Operating Company | Wichita, KS 67205 | Oil & Gas Operator | Dec 2019 |
| 10 | Stephenson L G & | Oil Operator | Apr 1987 | |
| 11 | Stratakan Exploration, LLC | Plainville, KS 67663 | Oil & Gas Operator | Feb 2026 |