| 1 | Shaner W G | Longmont, CO 80503 | Gas Operator | Dec 2021 |
| 2 | Shawmut Production Corporation | Pittsburgh, PA 15219-1913 | Oil & Gas Operator | Jan 2003 |
| 3 | Shearer James I | Blairsville, PA 15717-0337 | Oil & Gas Operator | Dec 2003 |
| 4 | Shelly Oil & Gas Inc | Avonmore, PA 15618-9748 | Gas Operator | Dec 2024 |
| 5 | SK Opr Inc | Cabot, PA 16023-1250 | Gas Operator | Dec 2024 |
| 6 | Snyder Bros Inc | Kittanning, PA 16201 | Oil & Gas Operator | Jul 2025 |
| 7 | Snyder Oil Corporation | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
| 8 | Somerset Oil & Gas Company | Portland, TX 78374 | Oil & Gas Operator | Dec 2006 |
| 9 | Spartan Resource MGMT Corp | Rural Valley, PA 16249-0326 | Gas Operator | Dec 2024 |
| 10 | Star Energy Inc | Dayton, PA 16222-4325 | Oil & Gas Operator | Dec 2024 |
| 11 | Stephenson Group Natural Gas Co | Smicksburg, PA 16256-1710 | Gas Operator | Dec 2020 |
| 12 | Stephenson Mark M | Smicksburg, PA 16256-1710 | Gas Operator | Dec 2009 |
| 13 | Stewart Drilling Program | Home, PA 15747-9801 | Oil & Gas Operator | Dec 2014 |
| 14 | Stewart Inc | Ringling, OK 73456 | Oil & Gas Operator | Jun 2025 |
| 15 | Susquehanna Energies Inc | Punxsutawney, PA 15767-4004 | Oil & Gas Operator | Dec 2024 |
| 16 | Susquehanna Expl & Prod LLC | Glen Campbell, PA 15742-0159 | Gas Operator | Dec 2024 |
| 17 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |