| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Samson Exploration LLC | Tulsa, OK 74101 | Oil & Gas Operator | Aug 2025 |
| 2 | Sceptre Resources Inc | Oil & Gas Operator | Dec 2007 | |
| 3 | Schlaikjer A L | Oil Operator | Feb 1997 | |
| 4 | Silverado Oil Inc | Greeley, CO 80631 | Oil Operator | Apr 2000 |
| 5 | Simray Production Company LP | Richland, TX 75080 | Oil & Gas Operator | Dec 2010 |
| 6 | SM Energy Company | Midland, TX 79707 | Oil & Gas Operator | Oct 2025 |
| 7 | Smith Red Plains Production LLC | Oil & Gas Operator | Aug 2025 | |
| 8 | Snyder Oil Corporation | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
| 9 | Sundance Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Jul 2014 |