| 1 | S & W Transports Inc | Velma, OK 73491 | Oil Operator | Jul 2025 |
| 2 | Salt Creek Energy Company LLC | Shawnee, OK 74802-1505 | Oil & Gas Operator | Jun 2025 |
| 3 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 4 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2025 |
| 5 | San Francisco-Okla Pet Ex Inc | | Oil & Gas Operator | Apr 2014 |
| 6 | Sandy Petroleum Inc | Shawnee, OK 74801-5634 | Oil & Gas Operator | Jun 2025 |
| 7 | Sanford Casondra | Ada, OK 74820-4460 | Oil & Gas Operator | May 2013 |
| 8 | Santa Fe Operating LLC | Frisco, TX 75034 | Oil & Gas Operator | Oct 2025 |
| 9 | SBR Oil LLC | Ada, OK 74821 | Oil Operator | May 2025 |
| 10 | Sellers Jack B Estate Of | Cleveland, OK 74020 | Oil & Gas Operator | Jun 2025 |
| 11 | Seminole Tank Service | Seminole, OK 74818-1587 | Oil & Gas Operator | Jun 2025 |
| 12 | Shadowpeak Operating LLC | Oklahoma City, OK 73159-6905 | Oil & Gas Operator | Jun 2025 |
| 13 | Sharber Billy Jack Operating | Konawa, OK 74849-0071 | Oil & Gas Operator | Mar 2015 |
| 14 | Sheridan Production Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2025 |
| 15 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | Oct 2025 |
| 16 | Silver Eagle Oil Company | Ada, OK 74820 | Oil Operator | Dec 2004 |
| 17 | Six "E" Trading Company | Henryetta, OK 74801 | Oil & Gas Operator | Sep 2020 |
| 18 | Slim Hole Inc | Farmington, NM 87401-7725 | Oil & Gas Operator | May 2013 |
| 19 | Smith Brothers Enterprises | Ardmore, OK 73402 | Oil Operator | Jul 1998 |
| 20 | Smith Max Dean | Wewoka, OK 74884 | Oil & Gas Operator | May 2025 |
| 21 | Sonata Oil & Gas Corp Inc | Stratford, OK 74812 | Oil & Gas Operator | Apr 2014 |
| 22 | South Ranch Corporation | Midland, TX 79707 | Oil Operator | Sep 2019 |
| 23 | Southerland Marquieta Dba Keta Oil Company | Loco, OK 73442 | Oil & Gas Operator | Jun 2025 |
| 24 | Southwest Petroleum Corp | Drumright, OK 74030 | Oil & Gas Operator | Mar 2018 |
| 25 | Spearpoint Energy LLC | Seminole, OK 74818-1247 | Oil Operator | Jun 2015 |
| 26 | Speed James F | Ada, OK 74821-1221 | Oil & Gas Operator | Nov 2009 |
| 27 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 28 | Stephens Operating Inc | Ardmore, OK 73401 | Oil & Gas Operator | Sep 2014 |
| 29 | Stephenson W W Pet Corp | Edmond, OK 73003-0014 | Oil & Gas Operator | Jul 2017 |
| 30 | Stoneridge Oil Inc | Ponca City, OK 74601-1600 | Oil & Gas Operator | Jan 2001 |
| 31 | Sutton Energy LLC | Ada, OK 74820 | Oil & Gas Operator | Jun 2025 |
| 32 | Sutton Oil Company, LLC | Loco, OK 73442 | Oil Operator | Jun 2025 |
| 33 | Swadley Roy W & Judith I | Holdenville, OK 74848-0794 | Oil & Gas Operator | Mar 2015 |
| 34 | Swenton, Michael J. | Tulsa, OK 74105 | Oil & Gas Operator | Jun 2025 |