| 1 | S & H Resources | Abilene, TX 79605 | Oil & Gas Operator | Feb 2026 |
| 2 | S & J Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2015 |
| 3 | S & S & H Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Jul 2004 |
| 4 | S.B. Street Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 5 | Sabine Pipe & Supply Co. | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2004 |
| 6 | Saddle Creek Oil, LLC | Albany, TX 76430 | Oil Operator | Feb 2026 |
| 7 | Sage Oil And Gas, LLC | Graham, TX 76450 | Gas Operator | Feb 2026 |
| 8 | Salida Exploration, LLC | Abilene, TX 79603 | Oil & Gas Operator | Feb 2026 |
| 9 | Saling Oil Co. | Abilene, TX 79604 | Oil & Gas Operator | Dec 2002 |
| 10 | Salty Lime Energy, LLC | Ovalo, TX 79541 | Oil Operator | Feb 2026 |
| 11 | Sanders Energy LLC | Aledo, TX 76008 | Oil & Gas Operator | Feb 2026 |
| 12 | Sandstone Services, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 13 | Savannah Ross And Company, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 14 | Schetawee, Inc. | Hamlin, TX 79520 | Oil & Gas Operator | Mar 2008 |
| 15 | Schkade Bros. Operating Company | Abilene, TX 79604 | Oil & Gas Operator | Oct 2021 |
| 16 | Schkade Production Co. | Abilene, TX 79604 | Oil & Gas Operator | Jul 2020 |
| 17 | Schkade, Carl E. | Albany, TX 76430 | Oil & Gas Operator | Sep 2009 |
| 18 | Schkade, Harold | Albany, TX 76430 | Oil & Gas Operator | Aug 2024 |
| 19 | Schkade, Louis | Albany, TX 76430 | Oil & Gas Operator | Mar 2008 |
| 20 | Scott Operating, Inc. | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 21 | Sedona Oil & Gas Corporation | Austin, TX 78746 | Oil & Gas Operator | Feb 2026 |
| 22 | Seely Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 23 | Senkel, Wesley, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2007 |
| 24 | Sequoia Energy Resources | Dallas, TX 75207 | Oil & Gas Operator | Feb 2026 |
| 25 | Sequoia Fossil Fuels, Inc. | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 26 | Sequoia Natural Gas, Inc. | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 27 | Seven Wells Oil & Gas Expl. | Abilene, TX 79601 | Oil & Gas Operator | Jun 2014 |
| 28 | Shack, Bill | Albany, TX 76430 | Oil & Gas Operator | Apr 2006 |
| 29 | Shaida, John H. | Wichita, KS 67226 | Oil & Gas Operator | Feb 2026 |
| 30 | Sheets Exploration Co., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2016 |
| 31 | Sheets, P. A. | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 1994 |
| 32 | Shidler, Mark L., Inc. | Houston, TX 77055 | Oil & Gas Operator | Feb 2026 |
| 33 | Shoshone Oil Company | Dallas, TX 75244 | Oil & Gas Operator | May 1994 |
| 34 | Sierra Exploration Company | San Antonio, TX 78209 | Oil & Gas Operator | Mar 2008 |
| 35 | Simpson Oil & Land Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 36 | Slate Holdings, Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Feb 2026 |
| 37 | Smalley, Bill | Albany, TX 76430 | Oil & Gas Operator | Jul 2001 |
| 38 | Smith Pipe Of Abilene | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 39 | Snyder Drilling Corp. | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 40 | So Operating Company | Cisco, TX 76437 | Oil & Gas Operator | Feb 2026 |
| 41 | Sojourner Drilling Corporation | Abilene, TX 79604 | Oil & Gas Operator | Feb 2026 |
| 42 | Southeastern Resources Corp. | Mansfield, TX 76063 | Oil & Gas Operator | Feb 2004 |
| 43 | Southern Exploration, Inc. | Fort Worth, TX 76137 | Oil & Gas Operator | Aug 2023 |
| 44 | Southern Mineral Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2001 |
| 45 | Southwest Gas Systems, Inc. | Spring, TX 77379 | Oil & Gas Operator | Feb 2026 |
| 46 | Southwest Royalties, Inc. | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 47 | Spartan Oil Corporation | Abilene, TX 79601 | Oil & Gas Operator | Aug 2003 |
| 48 | Spring Tree Management LC | Abilene, TX 79604 | Oil Operator | May 2013 |
| 49 | Squyres Oil Co., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2024 |
| 50 | Stamper Operating Co., Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 51 | Star Production, Inc. | Dallas, TX 75360 | Oil & Gas Operator | Feb 2026 |
| 52 | Startex Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 53 | Stasney Well Service, LLC | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 54 | Stasney, H. R. & Sons, LTD. | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 55 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 56 | Stober Oil And Gas Services, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 57 | Stovall Operating Co. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 58 | Stovall, Troy | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 59 | Strand, Carlton Oil | Stamford, TX 79553 | Oil & Gas Operator | May 1997 |
| 60 | Strawn Operating Co., L.L.C. | El Paso, TX 79912 | Oil Operator | Feb 2026 |
| 61 | Street, Spencer B., Jr. | Graham, TX 76450 | Oil & Gas Operator | Mar 1998 |
| 62 | Strike Too Oil | Albany, TX 76430 | Oil Operator | Feb 2026 |
| 63 | Stryker Energy Corp. | Mesquite, TX 75180 | Oil & Gas Operator | Feb 2026 |
| 64 | Subsea Operating Co. | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 65 | Sundance Consulting Corp. | Abilene, TX 79605 | Oil & Gas Operator | Feb 2026 |
| 66 | Sundance Resources, Inc. | Rio VIsta, TX 76093 | Oil & Gas Operator | Mar 2012 |
| 67 | Supreme Energy Company, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Feb 2026 |
| 68 | Sweetwater Drilling Co., Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Feb 2026 |
| 69 | Synergy Operating Co., LLC | Dallas, TX 75225 | Oil & Gas Operator | Feb 2026 |