| 1 | S & S Oil Company | Electra, TX 76360 | Oil & Gas Operator | Dec 2024 |
| 2 | Salt Fork Producers Inc | Pond Creek, OK 73766 | Oil & Gas Operator | Jan 1995 |
| 3 | Sananco Energy Corp | Naples, FL 33941 | Oil & Gas Operator | Jul 2013 |
| 4 | Sauter Operating Co LLC | Nowata, OK 74048-4023 | Oil Operator | Sep 2024 |
| 5 | Sellmeyer Frank | San Rafael, CA 94901-1339 | Oil Operator | Dec 2014 |
| 6 | Semcrude LP | Oklahoma City, OK 73112-5449 | Oil & Gas Operator | Jul 2008 |
| 7 | Sevitski & Associates Inc | Pryor, OK 74361 | Oil & Gas Operator | Dec 2000 |
| 8 | Shanks Drilling & Production Company LLC | Bixby, OK 74008 | Oil & Gas Operator | Aug 2024 |
| 9 | Shelton Oil Company LLC | Collinsville, OK 74021-5619 | Oil Operator | Sep 2024 |
| 10 | Sherrill Bob G | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2015 |
| 11 | Shipman James E Dba Lazy J Oil Co | Hallett, OK 74034 | Oil Operator | Sep 2024 |
| 12 | Six "E" Trading Company | Henryetta, OK 74801 | Oil & Gas Operator | Sep 2020 |
| 13 | Smith Connie M & Sheryle | Chelsea, OK 74016-1959 | Oil Operator | Feb 2017 |
| 14 | Smith Edward F | Avant, OK 74001-0024 | Oil & Gas Operator | Nov 2014 |
| 15 | Smith Shirley C | Claremore, OK 74017-0060 | Oil & Gas Operator | Mar 2015 |
| 16 | Snyder Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2015 |
| 17 | Sparks Greg | Afton, OK 74331 | Oil & Gas Operator | Sep 2024 |
| 18 | Spirit Energy Inc | Edmond, OK 73034 | Oil & Gas Operator | Apr 1999 |
| 19 | SRW Operating LLC | Duncan, OK 73534-2087 | Oil & Gas Operator | Sep 2014 |
| 20 | Sterling Properties Inc | Lawton, OK 73501-9601 | Oil Operator | Oct 2024 |
| 21 | Stonegate Ranch LLC | Caney, KS 67333 | Oil Operator | Sep 2024 |
| 22 | Stream Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Nov 2024 |
| 23 | Stumpff Paul | Bartlesville, OK 74006-3426 | Oil & Gas Operator | Mar 2015 |
| 24 | Sunday-Smith Mary E | Mannford, OK 74044-1457 | Oil & Gas Operator | Mar 2015 |
| 25 | Sunoco Partners MKT & Terminal | Tulsa, OK 74102-2039 | Oil & Gas Operator | Jan 2019 |
| 26 | Swan Richard N | Claremore, OK 74018-0503 | Oil Operator | Aug 2013 |