| 1 | S & D Oil Company | | Oil & Gas Operator | Apr 2020 |
| 2 | S H Production LLC | Tulsa, OK 74130-1418 | Oil & Gas Operator | Aug 2025 |
| 3 | Sabos George U | Tulsa, OK 74170 | Oil & Gas Operator | Jan 2013 |
| 4 | Sage NR Ok LLC | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2025 |
| 5 | Saiber Michael L & Lora L | Saxonburg, PA 16056 | Oil Operator | Mar 1997 |
| 6 | Sallee Oil Corporation | Collinsville, OK 74021 | Oil & Gas Operator | Sep 2025 |
| 7 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2025 |
| 8 | Sand Springs Oil & Gas Co. | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2025 |
| 9 | Sboc LLC | Hallett, OK 74034 | Oil Operator | Aug 2025 |
| 10 | Schad Jeffrey M | Mannford, OK 74044-0995 | Oil Operator | Sep 2021 |
| 11 | Seagull Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jan 2025 |
| 12 | Searcy Brothers Inc | Tulsa, OK 74135-0433 | Oil Operator | Jun 2004 |
| 13 | Select Operating Company Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2014 |
| 14 | Sellmeyer Eugene | Collinsville, OK 74021 | Oil & Gas Operator | Mar 2015 |
| 15 | Sevitski & Associates Inc | Pryor, OK 74361 | Oil & Gas Operator | Dec 2000 |
| 16 | Shadow-Del Oil Company | Kiefer, OK 74041-0453 | Oil & Gas Operator | Jul 2015 |
| 17 | Shallow Energy Inc | South Dennis, MA 2660 | Oil & Gas Operator | Feb 2025 |
| 18 | Shanks Drilling & Production Company LLC | Bixby, OK 74008 | Oil & Gas Operator | Aug 2025 |
| 19 | Shelton Alec & Glenda | Kiefer, OK 74041 | Oil & Gas Operator | Aug 2025 |
| 20 | Shideler Enterprises Inc | Drumright, OK 74030 | Oil & Gas Operator | Feb 2019 |
| 21 | Shipman James E Dba Lazy J Oil Co | Hallett, OK 74034 | Oil Operator | Jul 2025 |
| 22 | Sikes Oil Company Inc | Velma, OK 73091-0759 | Oil & Gas Operator | Jan 2014 |
| 23 | Silvertin Farm Production LLC | Tulsa, OK 74137 | Oil & Gas Operator | Apr 2020 |
| 24 | Simasko Production Co | Denver, CO 80204 | Oil & Gas Operator | Nov 1997 |
| 25 | Simmons Donald M | Muskogee, OK 74401 | Oil & Gas Operator | May 2013 |
| 26 | Slavens II Paul R | Tulsa, OK 74131 | Oil & Gas Operator | Aug 2025 |
| 27 | Sloan Production Co | | Oil Operator | Jan 2013 |
| 28 | Smith Edward F | Avant, OK 74001-0024 | Oil & Gas Operator | Nov 2014 |
| 29 | Smith Patrica\Judith Miller | Collinsville, OK 74021-6307 | Oil Operator | Jun 2010 |
| 30 | Smith Richard L | Catoosa, OK 74015 | Oil & Gas Operator | Dec 2019 |
| 31 | Smiths Investment Inc | Sperry, OK 74073-4198 | Oil Operator | Aug 2025 |
| 32 | Sneed William A Bill | Cleveland, OK 74020-1007 | Oil & Gas Operator | Aug 2025 |
| 33 | Snyder Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2015 |
| 34 | Sooner Pipe & Supply Corp | | Oil & Gas Operator | Nov 2004 |
| 35 | Southern Operating Corporation | Broken Arrow, OK 74014 | Oil & Gas Operator | May 2013 |
| 36 | Southstar Oil And Gas Inc | Andover, KS 67002-0123 | Oil & Gas Operator | Jul 2020 |
| 37 | Sparkman Rodger E | Jenks, OK 74037-0267 | Oil Operator | Sep 2018 |
| 38 | Sparks Greg | Afton, OK 74331 | Oil & Gas Operator | Aug 2025 |
| 39 | Sparks Mick Oil Company Inc | Jennings, OK 74038-0250 | Oil & Gas Operator | May 2025 |
| 40 | Storm Exploration Inc | Skiatook, OK 74070-1014 | Oil & Gas Operator | Jan 2013 |
| 41 | STP Cherokee Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2014 |
| 42 | Summit Energy,Inc | Littleton, CO 80127 | Oil & Gas Operator | Aug 2013 |
| 43 | Swenton Michael J | Tulsa, OK 74105 | Oil & Gas Operator | Aug 2025 |
| 44 | Swift A W & Company Inc | Sand Springs, OK 74063-5124 | Oil Operator | Jun 2003 |