| 1 | Saba Energy Of Texas Inc | Houston, TX 77042 | Oil & Gas Operator | Jul 2007 |
| 2 | Sabalo Exploration Operating,LLC | Corpus Chrsti, TX 78404 | Oil & Gas Operator | Jan 2021 |
| 3 | Sage Energy Company | San Antonio, TX 78215 | Oil & Gas Operator | Oct 2025 |
| 4 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 5 | Samson Lone Star LP | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2007 |
| 6 | Samson Lone Star, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 7 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2025 |
| 8 | Sandel Operating Company | Huntsville, TX 77340 | Oil & Gas Operator | Oct 2025 |
| 9 | Saxet Exploration Ent. Co., Inc. | Fulshear, TX 77441 | Oil Operator | Oct 2025 |
| 10 | Saxet Operating Co.,Inc. | Madisonville, TX 77864 | Oil & Gas Operator | Oct 2025 |
| 11 | Sbog, LLC | Granbury, TX 76048 | Oil & Gas Operator | Feb 2021 |
| 12 | Sem Operating Company LLC | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 13 | Setex Oil And Gas Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2012 |
| 14 | Shield Petroleum | College Sta, TX 77845 | Oil & Gas Operator | Oct 2025 |
| 15 | Showhorn Holding Co., L.L.C. | Normangee, TX 77871 | Oil Operator | Oct 2025 |
| 16 | Sikes Operating, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Jun 2003 |
| 17 | Silver Oak Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2016 |
| 18 | Silverbrook Operating II LLC | Barker, TX 77413 | Oil & Gas Operator | Oct 2025 |
| 19 | Single Barrel Oil And Gas LLC | Granbury, TX 76048 | Oil & Gas Operator | Oct 2025 |
| 20 | Smith Petroleum Company | Spring, TX 77389 | Oil & Gas Operator | Oct 2025 |
| 21 | Smith, L C Production | Jacksonville, TX 75766 | Oil Operator | Oct 2025 |
| 22 | Smith, L. C. | Jacksonville, TX 75766 | Oil & Gas Operator | Oct 2025 |
| 23 | Sonat Exploration Company -Tyler | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 24 | Southern Bay Operating, L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Jun 2013 |
| 25 | Southwest Operating, Inc.-Tyler | Tyler, TX 75701 | Oil & Gas Operator | Oct 2025 |
| 26 | Southwest Resources, Inc. | Brenham, TX 77834 | Oil & Gas Operator | Oct 2025 |
| 27 | Stallion Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 28 | Stephens, Autry C. | Midland, TX 79701 | Oil & Gas Operator | Mar 2023 |
| 29 | Stone Mountain Petroleum, LLC | Houston, TX 77008 | Oil & Gas Operator | Aug 2002 |
| 30 | Strago Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Aug 1994 |
| 31 | Stratco Operating Co Inc | Austin, TX 78701 | Oil & Gas Operator | Oct 2025 |
| 32 | Stratlynn, Inc. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 33 | Sue-Ann Operating, L.C. | Victoria, TX 77903 | Oil & Gas Operator | Oct 2025 |
| 34 | Sulphur River Exploration, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Oct 2025 |
| 35 | Summit Resources MGMT., LLC. | Edmond, OK 73083 | Oil & Gas Operator | Oct 2025 |
| 36 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |