| 1 | Sagely, Floyd E Properties, LTD | Fort Smith, AR 72917-0308 | Gas Operator | Jan 2015 |
| 2 | Schmid Properties Inc | Hico, TX 76457 | Oil & Gas Operator | Apr 2025 |
| 3 | Seagull Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jan 2025 |
| 4 | Seeco | | Gas Operator | Mar 2016 |
| 5 | Seeco, Inc. | | Gas Operator | Mar 2015 |
| 6 | Sexton Oil Company | Camden, AR 71701 | Oil Operator | Apr 2024 |
| 7 | Shidler, Mark L., Inc. | Houston, TX 77055 | Oil & Gas Operator | Apr 2025 |
| 8 | Shields Operating Inc | Fort Smith, AR 72901-3834 | Oil & Gas Operator | Oct 2021 |
| 9 | Shuler Drilling Co., Inc. | El Dorado, AR 71730 | Oil & Gas Operator | Jan 2025 |
| 10 | Sklar Exploration Company LLC | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2025 |
| 11 | Smackover Drilling Company Inc | Shreveport, LA 71104 | Oil & Gas Operator | Sep 2024 |
| 12 | Smackover Producing Co | | Oil & Gas Operator | Sep 2024 |
| 13 | Smith Oil Company | Smackover, AR 71762 | Oil Operator | Dec 2024 |
| 14 | Smith, Roger G | Magnolia, AR 71753 | Oil Operator | Jan 2025 |
| 15 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Apr 2025 |
| 16 | Stephens Oil Company, LLC | Stephens, AR 71764 | Oil Operator | Jul 2024 |
| 17 | Stephens Production Company | The Woodlands, TX 77381 | Oil & Gas Operator | Feb 2025 |
| 18 | Story Oil And Gas Inc | Magnolia, AR 71753 | Oil & Gas Operator | Jan 2025 |
| 19 | Strand Energy, L.C. | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |