| 1 | S & S Production, LLC | Parkersburg, OH 26101 | Oil & Gas Operator | Aug 2021 |
| 2 | S S & T Oil, LLC | Smackover, AR 71762 | Oil Operator | Jun 2024 |
| 3 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2024 |
| 4 | Sagely Floyd E Properties LTD | Fort Smith, AR 72917-0308 | Gas Operator | Jan 2015 |
| 5 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2024 |
| 6 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Dec 2024 |
| 7 | Saulsbury, Beverly | El Dorado, AR 71730 | Oil Operator | Jul 2024 |
| 8 | Saulsbury, John G | | Oil Operator | Apr 2023 |
| 9 | Saye Oil Company | | Oil Operator | Jul 2012 |
| 10 | Schmid Properties Inc | Hico, TX 76457 | Oil & Gas Operator | Dec 2024 |
| 11 | Seagull Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2024 |
| 12 | Sedna Energy, Inc | | Gas Operator | Nov 2011 |
| 13 | Seeco | | Gas Operator | Jul 2016 |
| 14 | Seeco, Inc. | | Gas Operator | Sep 2015 |
| 15 | Seeco, LLC | | Gas Operator | May 2019 |
| 16 | Sewell Operating, Inc | | Oil Operator | Dec 2008 |
| 17 | Sewell Production, LLC | El Dorado, AR 71730 | Oil Operator | Jul 2024 |
| 18 | Sexton Oil Company | Camden, AR 71701 | Oil Operator | Apr 2024 |
| 19 | Shamrock Well Operations LLC | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | Sep 2024 |
| 20 | Shana Petroleum Company | Dallas, TX 75206 | Oil & Gas Operator | Sep 2002 |
| 21 | Shelton, Marty, Inc | Smackover, AR 71762 | Oil Operator | Apr 2024 |
| 22 | Shidler, Mark L., Inc. | Houston, TX 77055 | Oil & Gas Operator | Dec 2024 |
| 23 | Shields Operating Inc | Fort Smith, AR 72901-3834 | Oil & Gas Operator | Oct 2021 |
| 24 | Shuler Drilling Co., Inc. | El Dorado, AR 71730 | Oil & Gas Operator | Jul 2024 |
| 25 | Sinclair And Sinclair, LLC | El Dorado, AR 71730 | Oil & Gas Operator | Jun 2024 |
| 26 | Sinclair Operating Company, LLC | El Dorado, AR 71730 | Oil & Gas Operator | Mar 2024 |
| 27 | Sinclair, J D Production | | Oil Operator | May 2014 |
| 28 | Sklar Exploration Company LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 29 | Smackover Drilling Company Inc | Shreveport, LA 71104 | Oil & Gas Operator | Jul 2024 |
| 30 | Smackover Producing Co | | Oil & Gas Operator | Jun 2024 |
| 31 | Smi Operating Company, LLC | Strong, AR 71765 | Oil & Gas Operator | Jul 2024 |
| 32 | Smith Oil Company | Smackover, AR 71762 | Oil Operator | Jun 2024 |
| 33 | Smith Operating & Management Co. | Shreveport, LA 71161 | Oil & Gas Operator | Dec 2022 |
| 34 | Smith, Jerry Production | Magnolia, AR 71753 | Oil Operator | Jul 2024 |
| 35 | Smith, Roger G | Magnolia, AR 71753 | Oil Operator | Jul 2024 |
| 36 | Southern Energy Of La, LLC | Shreveport, LA 71106 | Oil Operator | Jul 2024 |
| 37 | Southern Oil LLC | Smackover, AR 71762 | Oil & Gas Operator | May 2022 |
| 38 | Southwestern Energy Prod Co | Houston, TX 77032 | Oil & Gas Operator | Jun 2015 |
| 39 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Dec 2024 |
| 40 | St. Mary Land & Exploration Co | Denver, CO 80201 | Oil & Gas Operator | Jun 2010 |
| 41 | Stephens Oil Company, LLC | Stephens, AR 71764 | Oil Operator | Jun 2024 |
| 42 | Stephens Production Company | The Woodlands, TX 77381 | Oil & Gas Operator | Sep 2024 |
| 43 | Stone Oak Operating, LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Sep 2024 |
| 44 | Storm Cat Energy (USA) Operating Corporation | Denver, CO 80202 | Gas Operator | Jun 2017 |
| 45 | Storm Cat Energy USA Corporation | Denver, CO 80202 | Gas Operator | Nov 2011 |
| 46 | Story Oil And Gas Inc | Magnolia, AR 71753 | Oil & Gas Operator | Jul 2024 |
| 47 | Strand Energy, L.C. | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 48 | Stroud Petroleum, Inc. | Shreveport, LA 71162 | Oil & Gas Operator | Dec 2024 |
| 49 | Stroud Production LLC | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2024 |
| 50 | STS Petroleum LLC | Houston, TX 77289 | Oil & Gas Operator | Dec 2024 |
| 51 | Sunland Production Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2024 |