| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Samuel Gary Jr. & Associates, Inc. | Denver, CO 80202 | Oil & Gas Operator | Feb 2026 |
| 2 | Schippers Oilfield Services, LLC | Hoxie, KS 67740 | Oil Operator | Feb 2026 |
| 3 | Shields Oil Prod | Oil & Gas Operator | Aug 1995 | |
| 4 | Slawson Donald C | Wichita, KS 67202 | Oil & Gas Operator | Oct 2025 |
| 5 | SMG Resources LLC | Oil & Gas Operator | Feb 2026 | |
| 6 | Stelbar Oil Corporation, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 7 | Stephenson L G & | Oil Operator | Apr 1987 | |
| 8 | Suemaur Expl. & Prod., LLC | Corpus Christ, TX 78401 | Oil & Gas Operator | Jun 2024 |