| 1 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 2 | Salt Creek Production, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Oct 2025 |
| 3 | Saratoga Resources, Inc. | Houston, TX 77077 | Oil & Gas Operator | Jul 1994 |
| 4 | Shelby Boswell Operator, LLC | Dallas, TX 75225 | Oil & Gas Operator | Oct 2025 |
| 5 | Shelby Production Co. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2009 |
| 6 | Shinnery Oil Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 7 | Shoco Production LLC | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 8 | Shoco Production, L.P. | Kilgore, TX 75663 | Oil & Gas Operator | May 2020 |
| 9 | Shuler Drilling Co., Inc. | El Dorado, AR 71730 | Oil & Gas Operator | Jan 2025 |
| 10 | SND Operating, L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 11 | Sonat Exploration Company -Tyler | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 12 | Sonerra Resources Corporation | Nacogdoches, TX 75963 | Oil & Gas Operator | Oct 2025 |
| 13 | Southwestern Energy Prod Co | Houston, TX 77032 | Oil & Gas Operator | Jun 2015 |
| 14 | Stelzer, J. C. | Post, TX 79356 | Oil & Gas Operator | Dec 1995 |
| 15 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |
| 16 | Swift Energy Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | Jun 2017 |