| 1 | Sallee Oil Corporation | Collinsville, OK 74021-0550 | Oil & Gas Operator | Jan 2024 |
| 2 | Salty Dog Disposal LLC | | Oil Operator | Mar 2024 |
| 3 | Sand Boy Production Company | Bartlesville, OK 74003-9273 | Oil & Gas Operator | Dec 2022 |
| 4 | Schiff & Jackson Oil Producers | Dallas, TX 75206 | Oil & Gas Operator | Jan 2024 |
| 5 | Selby Larry Monroe | Bartlesville, OK 74006 | Oil & Gas Operator | Apr 2020 |
| 6 | Select Operating Company Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2014 |
| 7 | Sellmeyer Eugene | Collinsville, OK 74021 | Oil & Gas Operator | Mar 2015 |
| 8 | Sequent Exploration Inc | | Oil & Gas Operator | Oct 2017 |
| 9 | Serendipity Operating LLC | | Oil & Gas Operator | Jan 2024 |
| 10 | Service Clearing Corp. | Dallas, TX 75229 | Oil & Gas Operator | Apr 2024 |
| 11 | Sevitski & Associates Inc | Pryor, OK 74361 | Oil & Gas Operator | Dec 2000 |
| 12 | Shamrock Well Operations LLC | | Oil & Gas Operator | Feb 2024 |
| 13 | Shannon Petroleum Inc | Tulsa, OK 74136-4603 | Oil & Gas Operator | Oct 2016 |
| 14 | Shertzer Charles F | Kilgore, TX 75662 | Oil Operator | Nov 2005 |
| 15 | Siosi Oil & Gas Company | Tulsa, OK 74170-2163 | Oil & Gas Operator | Nov 2013 |
| 16 | Six "E" Trading Company | Allen, OK 74825-0346 | Oil & Gas Operator | Sep 2020 |
| 17 | SM Oil & Gas Inc | Skiatook, OK 74070 | Oil & Gas Operator | Jan 2024 |
| 18 | Smith Cheryl A | Copan, OK 74022 | Oil Operator | Sep 2023 |
| 19 | Smith Petroleum LLC | Barnsdall, OK 74002-0134 | Oil Operator | Jan 2024 |
| 20 | Southern Star Central Gas Pipeline, Inc. | Owensboro, KY 42301 | Oil & Gas Operator | Dec 2023 |
| 21 | Spencer Oil Company | Borger, TX 79007 | Oil & Gas Operator | Jan 2024 |
| 22 | Spencer Oil Company LLC | Dewey, OK 74029-0416 | Oil Operator | Jan 2015 |
| 23 | Spring Operating Company | Edmond, OK 73083-2048 | Oil & Gas Operator | Feb 2024 |
| 24 | Staats, William N | | Oil & Gas Operator | Jan 2024 |
| 25 | Stephens, Autry C. | Midland, TX 79701 | Oil & Gas Operator | Mar 2023 |
| 26 | Stonegate Ranch LLC | Caney, KS 67333 | Oil Operator | Dec 2023 |
| 27 | Stratco, Inc. | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 28 | Sun Refining & Marketing | Philadelphia, PA 19103 | Oil & Gas Operator | Jul 2015 |
| 29 | Sunoco Partners MKT & Terminal | Tulsa, OK 74102-2039 | Oil & Gas Operator | Jan 2019 |
| 30 | Superior Companies Inc | Bartlesville, OK 74003-2621 | Oil & Gas Operator | May 2013 |
| 31 | Superior Saltwater Disposal LLC | | Oil & Gas Operator | Dec 2016 |
| 32 | Swain Clinton Edward | Ochelata, OK 74051-2220 | Oil Operator | Nov 2023 |
| 33 | Swanson Douglas L & Sharon | Bartlesville, OK 74003-9319 | Oil Operator | Jan 2024 |
| 34 | Swenton, Michael J. | Tulsa, OK 74105 | Oil & Gas Operator | Jan 2024 |