| 1 | S & S Oil | Ponca City, OK 74601 | Oil & Gas Operator | Dec 2009 |
| 2 | S & T SVC & Supply Inc | Pleasantville, PA 16341-2817 | Oil & Gas Operator | Dec 2025 |
| 3 | Samson Exploration LLC | Tulsa, OK 74101 | Oil & Gas Operator | Feb 2026 |
| 4 | Samson Res Co | Tulsa, OK 74103-3103 | Gas Operator | Jan 2015 |
| 5 | Sandstone Dev LLC | Bradford, PA 16701-2922 | Oil & Gas Operator | Dec 2025 |
| 6 | Sandstone Resources | Saint Joseph, MO 64506 | Oil & Gas Operator | Dec 1995 |
| 7 | Schneider Edward H | Bridgeville, PA 15017-2165 | Gas Operator | Dec 2025 |
| 8 | Schrader Willard C | Tionesta, PA 16353-8114 | Oil & Gas Operator | Dec 2025 |
| 9 | Schrecengost Fred M | Sligo, PA 16255-0216 | Oil & Gas Operator | Dec 2016 |
| 10 | Schreiner Oil & Gas Inc | Prescott, AZ 86303 | Oil & Gas Operator | Dec 2023 |
| 11 | Scorpio Energy Inc | Sheffield, PA 16347-0929 | Oil & Gas Operator | Dec 2025 |
| 12 | Seneca Resources Co LLC | Cranberry Township, PA 16066 | Oil & Gas Operator | Feb 2026 |
| 13 | September Corp | Titusville, PA 16354-6833 | Oil & Gas Operator | Dec 2025 |
| 14 | Sergeant Gas Co Inc | Wilcox, PA 15870-1810 | Oil & Gas Operator | Dec 2024 |
| 15 | Shaner W G | Longmont, CO 80503 | Gas Operator | Dec 2021 |
| 16 | Shawmut Production Corporation | Pittsburgh, PA 15219-1913 | Oil & Gas Operator | Jan 2003 |
| 17 | Shearer James I | Blairsville, PA 15717-0337 | Oil & Gas Operator | Dec 2003 |
| 18 | Shelex Drilling Inc | Lexington, KY 40523 | Oil & Gas Operator | Dec 2025 |
| 19 | Shelly Oil & Gas Inc | Avonmore, PA 15618-9748 | Gas Operator | Dec 2025 |
| 20 | Simon Of Bolivar Enterprises Inc | Cuba, NY 14727 | Oil & Gas Operator | Dec 2024 |
| 21 | Simpson Gary H | Albion, PA 16401-8008 | Gas Operator | Dec 2014 |
| 22 | SK Opr Inc | Mars, PA 16046-3811 | Gas Operator | Dec 2025 |
| 23 | Sliverville Oil Co LLC | Bradford, PA 16701-2770 | Oil & Gas Operator | Dec 2025 |
| 24 | SLT Production LLC | Sheffield, PA 16347-0547 | Oil & Gas Operator | Dec 2025 |
| 25 | SM Energy | Denver, CO 80203-4361 | Gas Operator | Feb 2015 |
| 26 | Sme Well SVC Inc | Herman, PA 16039-0156 | Oil & Gas Operator | Dec 2025 |
| 27 | Snee & Eberly & People Natural Gas | Unknown, PA 15000 | Gas Operator | Dec 1986 |
| 28 | Snyder Bros Inc | Kittanning, PA 16201 | Oil & Gas Operator | Feb 2026 |
| 29 | Snyder Oil Corporation | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
| 30 | Somerset Oil & Gas Company | Portland, TX 78374 | Oil & Gas Operator | Dec 2006 |
| 31 | Songer Harriett R | Brookville, PA 15825-5367 | Oil & Gas Operator | Dec 2010 |
| 32 | South Shore Energy LLC | Geneva, OH 44041 | Oil & Gas Operator | Dec 2025 |
| 33 | Southwell Russell C | Warren, PA 16365-3686 | Oil & Gas Operator | Dec 2022 |
| 34 | Southwell William R | Warren, PA 16365-1259 | Oil & Gas Operator | Dec 2017 |
| 35 | Southwestern Energy Prod Co | Houston, TX 77032 | Oil & Gas Operator | Jun 2015 |
| 36 | Spartan Resource MGMT Corp | Rural Valley, PA 16249-0326 | Gas Operator | Dec 2025 |
| 37 | Star Energy Inc | Dayton, PA 16222-4325 | Oil & Gas Operator | Dec 2025 |
| 38 | Stateside Energy Group LLC | North Miami Beach, FL 33435 | Oil & Gas Operator | Dec 2024 |
| 39 | STD Steel | Latrobe, PA 15650-0071 | Oil & Gas Operator | Dec 2002 |
| 40 | Stedman Energy Inc | Chautauqua, NY 14722 | Oil & Gas Operator | Dec 2025 |
| 41 | Stephenson Group Natural Gas Co | Smicksburg, PA 16256-1710 | Gas Operator | Dec 2020 |
| 42 | Stephenson Mark M | Smicksburg, PA 16256-1710 | Gas Operator | Dec 2009 |
| 43 | Sterling Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2015 |
| 44 | Stewart Drilling Program | Home, PA 15747-9801 | Oil & Gas Operator | Dec 2014 |
| 45 | Stewart Inc | Ringling, OK 73456 | Oil & Gas Operator | Feb 2026 |
| 46 | Stiglitz Raymond J | Franklin, PA 16323-7760 | Oil & Gas Operator | Dec 2013 |
| 47 | STL Resources LLC | Sewickley, PA 15143-8859 | Gas Operator | Feb 2026 |
| 48 | Stone Energy Corporation | Denver, CO 80202-2828 | Oil & Gas Operator | Oct 2014 |
| 49 | Stone Ridge Energy LLC | Uniontown, PA 15401-6831 | Oil & Gas Operator | Feb 2026 |
| 50 | Stonehaven Energy MGT Co LLC | Clearfield, PA 16830-7342 | Oil & Gas Operator | Dec 2019 |
| 51 | Stonewall Gas Co | Jane Lew, WV 26378 | Oil & Gas Operator | Dec 1999 |
| 52 | Stryker Energy LLC | Mayfield VIllag, OH 44143 | Oil & Gas Operator | Dec 2018 |
| 53 | Sullivan & Clark | Youngsville, PA 16371-0194 | Oil & Gas Operator | Dec 1998 |
| 54 | Susquehanna Energies Inc | Punxsutawney, PA 15767-4004 | Oil & Gas Operator | Dec 2025 |
| 55 | Susquehanna Expl & Prod LLC | Glen Campbell, PA 15742-0159 | Gas Operator | Dec 2024 |
| 56 | SV Abs Interest Wetmore Proj | Saint Marys, PA 15857-1729 | Oil & Gas Operator | Dec 2025 |
| 57 | Swamp Angel Energy LLC | Wichita, KS 67220-3900 | Oil & Gas Operator | Dec 2009 |
| 58 | Swanhart Angelo & Deborah | Indiana, PA 15701-6301 | Gas Operator | Dec 2025 |
| 59 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 60 | SWN Production Company, LLC | Spring, TX 77391 | Oil & Gas Operator | Dec 2025 |
| 61 | Sylvan Energy, LLC | Pittsburgh, PA 15211 | Oil & Gas Operator | Apr 2026 |
| 62 | Synd Enterprises Inc | Lakewood, NY 14750-9613 | Oil & Gas Operator | Dec 2006 |