| 1 | S & S Star Operating, LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Jun 2023 |
| 2 | S & W Engine Supply | Oklahoma City, OK 73107 | Oil Operator | Jun 2003 |
| 3 | Sabco Operating Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2018 |
| 4 | Saber Industries LP | Dallas, TX 75254 | Oil Operator | Dec 2024 |
| 5 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2025 |
| 6 | Safire Resources LLC (Osage Only) | | Oil & Gas Operator | Jun 2025 |
| 7 | Salty Dog Disposal LLC | Cement, OK 73017 | Oil Operator | Jul 2025 |
| 8 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 9 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2025 |
| 10 | San Francisco-Okla Pet Ex Inc | | Oil & Gas Operator | Apr 2014 |
| 11 | Sand Point Production Inc | Oklahoma City, OK 73172 | Oil & Gas Operator | Jun 2025 |
| 12 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Sep 2025 |
| 13 | Sandy Petroleum Inc | Shawnee, OK 74801-5634 | Oil & Gas Operator | Jun 2025 |
| 14 | Sanford Casondra | Ada, OK 74820-4460 | Oil & Gas Operator | May 2013 |
| 15 | Sanguine Gas Exploration, LLC | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2025 |
| 16 | Sanook Inc | Oklahoma City, OK 73156-0548 | Oil & Gas Operator | Jan 2007 |
| 17 | Santa Fe Operating LLC | Frisco, TX 75034 | Oil & Gas Operator | Sep 2025 |
| 18 | Sasakwa Operating LLC | Oklahoma City, OK 73179-1902 | Oil & Gas Operator | Jun 2025 |
| 19 | Scissortail Energy LLC | Tulsa, OK 74137-3644 | Oil & Gas Operator | Feb 2015 |
| 20 | Seagull Energy E & P Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2015 |
| 21 | Seaport Inc | Oklahoma City, OK 73131 | Oil & Gas Operator | Jun 2025 |
| 22 | Seminole Tank Service | Seminole, OK 74818-1587 | Oil & Gas Operator | Jun 2025 |
| 23 | Sensor Oil & Gas Inc | Duncan, OK 73534 | Oil & Gas Operator | May 2013 |
| 24 | Sentinel Petroleum Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2020 |
| 25 | Service Drilling Co., L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2003 |
| 26 | Shakespeare Oil Co Inc | Salem, IL 62881 | Oil & Gas Operator | Jul 2025 |
| 27 | Shallow Energy Inc | South Dennis, MA 2660 | Oil & Gas Operator | Feb 2025 |
| 28 | Sharber Billy Jack Operating | Konawa, OK 74849-0071 | Oil & Gas Operator | Mar 2015 |
| 29 | Sharber Production Inc | Konawa, OK 74849 | Oil & Gas Operator | Dec 2024 |
| 30 | Shields Energy Inc | Fort Smith, AR 72901-4607 | Oil & Gas Operator | Jun 2025 |
| 31 | Shields Operating, Inc | Fort Smith, AR 72901-3834 | Oil & Gas Operator | Oct 2021 |
| 32 | Signature Exploration Inc. | Shawnee, OK 74804-4130 | Oil & Gas Operator | Mar 2015 |
| 33 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | Sep 2025 |
| 34 | Simcoe Oil Company | Scottsdale, AZ 85258-2553 | Oil & Gas Operator | May 2020 |
| 35 | Simmons Donald M | Muskogee, OK 74401 | Oil & Gas Operator | May 2013 |
| 36 | Six "E" Trading Company | Henryetta, OK 74801 | Oil & Gas Operator | Sep 2020 |
| 37 | SJ Ok Oil Company | Dallas, TX 75206-9925 | Oil & Gas Operator | Jun 2025 |
| 38 | SLS Operating LLC | Seminole, OK 74868-5876 | Oil & Gas Operator | Jun 2025 |
| 39 | SLT Dakota Operating, Inc. | Yukon, OK 73099 | Oil & Gas Operator | Sep 2025 |
| 40 | Smith J S Production | Seminole, OK 74868 | Oil & Gas Operator | Jun 2025 |
| 41 | Smith Max Dean | Wewoka, OK 74884 | Oil & Gas Operator | May 2025 |
| 42 | Smith Petroleum Company | Spring, TX 77389 | Oil & Gas Operator | Sep 2025 |
| 43 | Smith Terry | Wewoka, OK 74884 | Oil & Gas Operator | Mar 2015 |
| 44 | Sonata Oil & Gas Corp Inc | Stratford, OK 74812 | Oil & Gas Operator | Apr 2014 |
| 45 | Sopac Exploration Inc | Drumright, OK 74030 | Oil & Gas Operator | Jun 1993 |
| 46 | Southerland Jackie Dale Dba Skyden Oil | Duncan, OK 73533-5392 | Oil & Gas Operator | Jun 2025 |
| 47 | Southern Resources Inc | Oklahoma City, OK 73118-4821 | Oil & Gas Operator | Jun 2025 |
| 48 | Sparks Resources Inc | Bristow, OK 74010 | Oil & Gas Operator | Jul 2025 |
| 49 | Sparlin J L | Oklahoma City, OK 73156-1446 | Oil Operator | Jun 2025 |
| 50 | Spring Resources, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2007 |
| 51 | SRW Operating LLC | Duncan, OK 73534-2087 | Oil & Gas Operator | Sep 2014 |
| 52 | Staghorn Petroleum II LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | Jul 2025 |
| 53 | Stargas Co | Tulsa, OK 74136-5407 | Oil & Gas Operator | Aug 2013 |
| 54 | Starks Leslie | Wetumka, OK 74883-0003 | Oil & Gas Operator | Oct 1995 |
| 55 | Staub, Larry, Inc. | Azle, TX 76020 | Oil & Gas Operator | Sep 2025 |
| 56 | Steele VIctor Patterson | Wewoka, OK 74884-0560 | Oil & Gas Operator | Jan 2001 |
| 57 | Stephen Michael Inc | Midwest City, OK 73130-5200 | Oil & Gas Operator | Oct 2015 |
| 58 | Stewart K Petroleum Corp | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 59 | Stoneriver Energy, LLC | Lubbock, TX 79424 | Oil & Gas Operator | Sep 2025 |
| 60 | Stover Company | Tulsa, OK 74152-0786 | Oil & Gas Operator | Jan 2013 |
| 61 | Stover Oil Company | Konawa, OK 74849-0216 | Oil & Gas Operator | Jul 2002 |
| 62 | Sturman Jay R | Mounds, OK 74047 | Oil & Gas Operator | Apr 2024 |
| 63 | Sultex Oil & Gas Inc | Houston, TX 77059-3126 | Oil & Gas Operator | Aug 2002 |
| 64 | Swadley Et Al | Holdenville, OK 74848-0794 | Oil & Gas Operator | Nov 2014 |
| 65 | Swadley Roy W & Judith I | Holdenville, OK 74848-0794 | Oil & Gas Operator | Mar 2015 |
| 66 | Swanson G T | Duncan, OK 73533 | Oil & Gas Operator | Nov 1998 |
| 67 | Swearingen Robert E Dba Sabo Production | Seminole, OK 74868 | Oil & Gas Operator | Jun 2025 |
| 68 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |