| 2901 | Synergy Production Company | Houston, TX 77024 | Oil & Gas Operator | Jan 1996 |
| 2902 | Synergy Resources | Artesia, NM 88210 | Oil & Gas Operator | Jan 2015 |
| 2903 | Syntax Energy Corporation | Denton, TX 76210 | Oil Operator | Nov 2025 |
| 2904 | Synthetic Energy Corporation | Houston, TX 77006 | Oil Operator | Nov 2025 |
| 2905 | Szumigala, Edward R. & Ruth A. | Dunkirk, NY 14048 | Gas Operator | Dec 2024 |