| 1 | S2 Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2023 |
| 2 | Saber Oil & Gas Ventures, LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 3 | Saber Resources, LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2008 |
| 4 | Saga Petroleum LLC Of Colorado | Norman, OK 73072 | Oil & Gas Operator | Sep 2026 |
| 5 | Sage Energy Company | San Antonio, TX 78215 | Oil & Gas Operator | Sep 2026 |
| 6 | Sagebrush Oilandgas Company,LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2010 |
| 7 | Saguaro Petroleum, LLC | Eastland, TX 76448 | Oil & Gas Operator | Sep 2026 |
| 8 | Sahara Operating Company | Midland, TX 79704 | Oil & Gas Operator | Sep 2026 |
| 9 | Salt Creek Production, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Sep 2026 |
| 10 | Santa Fe Energy Resources, Inc. | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
| 11 | Santa Fe Snyder Corporation | Houston, TX 77024 | Oil & Gas Operator | Oct 2000 |
| 12 | Satanta Oil Company | Midland, TX 79704 | Oil & Gas Operator | Sep 2026 |
| 13 | Schlagal, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2016 |
| 14 | Schmid Properties, Inc. | Hico, TX 76457 | Oil & Gas Operator | Sep 2026 |
| 15 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Sep 2026 |
| 16 | Scythian, LTD. | Midland, TX 79701 | Oil & Gas Operator | Dec 2020 |
| 17 | SDX Resources, Inc. | Midland, TX 79704 | Oil & Gas Operator | Sep 2026 |
| 18 | Seaboard Oil Company | Midland, TX 79710 | Oil & Gas Operator | Mar 2008 |
| 19 | Seaboard Operating Co. | Midland, TX 79710 | Oil & Gas Operator | Sep 2026 |
| 20 | Sedona Oil & Gas Corporation | Dallas, TX 75231 | Oil & Gas Operator | Sep 2026 |
| 21 | Seguro Oil And Gas, LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2024 |
| 22 | Sei Operating, LLC | Mandeville, LA 70471 | Oil & Gas Operator | Sep 2026 |
| 23 | Sem Operating Company LLC | Houston, TX 77042 | Oil & Gas Operator | Sep 2026 |
| 24 | Sharp Image Energy, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Sep 2026 |
| 25 | Siana Oil & Gas | Conroe, TX 77305 | Oil & Gas Operator | Sep 2026 |
| 26 | Siete Oil And Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 27 | Simata Energy | Midland, TX 79708 | Oil & Gas Operator | Sep 2026 |
| 28 | Sinclair Exploration Company | Abilene, TX 79604 | Oil & Gas Operator | Nov 1998 |
| 29 | Slant Operating, LLC | Lafayette, LA 70503 | Oil & Gas Operator | Sep 2026 |
| 30 | Slape Oil Company, Inc. | Houston, TX 77064 | Oil & Gas Operator | Jun 2011 |
| 31 | Slaughter J M Oil Company | Fort Worth, TX 76116 | Oil & Gas Operator | Jan 2001 |
| 32 | SM Energy Company | Midland, TX 79707 | Oil & Gas Operator | Sep 2026 |
| 33 | SMC Oil & Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Sep 2026 |
| 34 | Smith & Marrs Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2021 |
| 35 | Smith Energy Operating Company | Lubbock, TX 79423 | Oil & Gas Operator | Mar 2026 |
| 36 | Smith Pipe Of Abilene | Abilene, TX 79608 | Oil & Gas Operator | Sep 2026 |
| 37 | Snyder Oil Corporation | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
| 38 | Socorro Exploration, Inc. | Lubbock, TX 79464 | Oil & Gas Operator | Sep 2026 |
| 39 | Sogo III LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2017 |
| 40 | Sojourner Drilling Corporation | Abilene, TX 79604 | Oil & Gas Operator | Sep 2026 |
| 41 | Sonat Exploration Co. - Midland | Houston, TX 77251 | Oil & Gas Operator | Mar 1999 |
| 42 | Southern Union Exploration Co. | Austin, TX 78701 | Oil & Gas Operator | Feb 2002 |
| 43 | Southwest Royalties, Inc. | Midland, TX 79710 | Oil & Gas Operator | Sep 2026 |
| 44 | Spi Operations LLC | Midland, TX 79710 | Oil & Gas Operator | Jan 2013 |
| 45 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Sep 2026 |
| 46 | SSC, Inc. | Lubbock, TX 79408 | Oil & Gas Operator | Sep 2026 |
| 47 | Stallion Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Oct 2017 |
| 48 | Stanolind Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2021 |
| 49 | Stanolind Production LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2020 |
| 50 | STB Energy Inc. | Tulsa, OK 74105 | Oil & Gas Operator | Jul 2008 |
| 51 | Steadfast Oil & Gas, LLC | Midland, TX 79707 | Oil & Gas Operator | Oct 2022 |
| 52 | Stelbar Oil Corporation, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 53 | Stephens, Autry C. | Midland, TX 79701 | Oil & Gas Operator | Mar 2023 |
| 54 | Strand Energy, Inc. (I) | Houston, TX 77002 | Oil & Gas Operator | Sep 1996 |
| 55 | Summit Exploration, L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2008 |
| 56 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | Sep 2026 |
| 57 | Sunray Energy, Inc. | Round Rock, TX 78683 | Oil & Gas Operator | Nov 2018 |
| 58 | Supreme Energy Company, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Sep 2026 |
| 59 | Surge Operating, LLC | Houston, TX 77041 | Oil & Gas Operator | Sep 2026 |