| 1 | Saber Oil & Gas Ventures, LLC | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 2 | Sagebrush Oilandgas Company,LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2010 |
| 3 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 4 | Samson Lone Star LP | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2007 |
| 5 | Samson Lone Star, LLC | Tulsa, OK 74103 | Oil & Gas Operator | May 2024 |
| 6 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2024 |
| 7 | San Antonio Gas & Oil, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Feb 2000 |
| 8 | Sayers Operating Company | Midland, TX 79705 | Oil & Gas Operator | Feb 2005 |
| 9 | Setex Oil And Gas Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2012 |
| 10 | Shaida, John H. | Wichita, KS 67226 | Oil & Gas Operator | May 2024 |
| 11 | Shell Trading Us Company | Houston, TX 77210 | Oil & Gas Operator | Jan 2024 |
| 12 | Silver Oil & Gas Inc. | San Angelo, TX 76906 | Oil & Gas Operator | May 2024 |
| 13 | Smith Pipe Of Abilene | Abilene, TX 79608 | Oil & Gas Operator | May 2024 |
| 14 | Snow Oil & Gas Inc. | Andrews, TX 79714 | Oil & Gas Operator | May 2024 |
| 15 | Sonat Exploration Co. - Midland | Houston, TX 77251 | Oil & Gas Operator | Mar 1999 |
| 16 | Southland Royalty Company | Houston, TX 77210 | Oil & Gas Operator | Sep 2011 |
| 17 | SP Resources, LLC | Sonora, TX 76950 | Gas Operator | May 2024 |
| 18 | Spiller, Robert S. | San Antonio, TX 78213 | Oil & Gas Operator | Oct 1995 |
| 19 | Staley Operating Co. | Midland, TX 79702 | Oil & Gas Operator | Jan 2022 |
| 20 | Stanolind Operating Corp. | Midland, TX 79701 | Oil & Gas Operator | Apr 2008 |
| 21 | Star Production, Inc. | Dallas, TX 75360 | Oil & Gas Operator | May 2024 |
| 22 | Statex Petroleum Inc | Dallas, TX 75229 | Oil & Gas Operator | Dec 2000 |
| 23 | Strawn Petroleum Operating, LLC | Dallas, TX 75254 | Oil & Gas Operator | May 2024 |
| 24 | Supreme Energy Company, Inc. | Abilene, TX 79601 | Oil & Gas Operator | May 2024 |
| 25 | Swartz Oil Company | San Angelo, TX 76906 | Oil & Gas Operator | May 2024 |
| 26 | Synergy Oil & Gas, Inc. (A) | Houston, TX 77024 | Oil & Gas Operator | Aug 2001 |
| 27 | Synergy Production Company | Houston, TX 77024 | Oil & Gas Operator | Jan 1996 |