| 1 | Sandstone Dev LLC | Bradford, PA 16701-2922 | Oil & Gas Operator | Dec 2023 |
| 2 | Schreiner Oil & Gas Inc | Prescott, AZ 86303 | Oil & Gas Operator | Dec 2021 |
| 3 | Seneca Resources Co LLC | Cranberry Township, PA 16066 | Oil & Gas Operator | Feb 2024 |
| 4 | Sergeant Gas Co Inc | Wilcox, PA 15870-1810 | Oil & Gas Operator | Dec 2023 |
| 5 | Simon Of Bolivar Enterprises Inc | Shinglehouse, PA 16748 | Oil & Gas Operator | Dec 2022 |
| 6 | Sliverville Oil Co LLC | Bradford, PA 16701-2770 | Oil & Gas Operator | Dec 2023 |
| 7 | SM Energy | Denver, CO 80203-4361 | Gas Operator | Feb 2015 |
| 8 | Snyder Bros Inc | Kittanning, PA 16201 | Oil & Gas Operator | Feb 2024 |
| 9 | South Shore Energy LLC | Geneva, OH 44041-0800-0800 | Oil & Gas Operator | Dec 2023 |
| 10 | Southwell Russell C | Warren, PA 16365-3686 | Oil & Gas Operator | Dec 2022 |
| 11 | Stateside Energy Group LLC | North Miami Beach, FL 33435 | Oil & Gas Operator | Dec 2022 |
| 12 | Stonehaven Energy MGT Co LLC | Marienville, PA 16239-1034 | Oil & Gas Operator | Dec 2019 |
| 13 | SV Abs Interest Wetmore Proj | Saint Marys, PA 15857-1729 | Oil & Gas Operator | Dec 2023 |
| 14 | Swamp Angel Energy LLC | Wichita, KS 67220-3900 | Oil & Gas Operator | Dec 2009 |
| 15 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 16 | Synd Enterprises Inc | Lakewood, NY 14750-9613 | Oil & Gas Operator | Dec 2006 |