| 1 | Samuel Gary Jr. & Associates, Inc. | Denver, CO 80202 | Oil & Gas Operator | Sep 2025 |
| 2 | San Marco Petroleum Inc | Denver, CO 80293 | Oil & Gas Operator | Dec 2025 |
| 3 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Dec 2025 |
| 4 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Dec 2025 |
| 5 | Secure Exploration And Production, LLC | | Oil Operator | Aug 2025 |
| 6 | Sharon Resources | | Oil Operator | Sep 1995 |
| 7 | Sharon Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Aug 2010 |
| 8 | Sonat Exploration Co. | Houston, TX 77251 | Oil & Gas Operator | Dec 2021 |
| 9 | Spess Oil Company, A General Partnership | Cleveland, OK 74020 | Oil & Gas Operator | Sep 2025 |
| 10 | Spikes Gas & Oil | | Gas Operator | Mar 1994 |
| 11 | Spikes, Gary E. | Garden City, KS 67846 | Gas Operator | Mar 2013 |
| 12 | St Johns Operating #1 LP | Houston, TX 77060 | Oil & Gas Operator | Aug 2023 |
| 13 | Stelbar Oil Corporation, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 14 | Sunflower Exploration, LLC | Overland Park, KS 66210 | Gas Operator | Sep 2025 |