| 1 | S & J Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2015 |
| 2 | S & P Energy | Benbrook, TX 76126 | Oil & Gas Operator | Oct 1994 |
| 3 | S & P Energy, Inc. | Benbrook, TX 76126 | Oil & Gas Operator | Aug 2003 |
| 4 | S&G Oil LLC | Wichita Falls, TX 76309 | Oil & Gas Operator | Oct 2025 |
| 5 | S.B. Street Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 6 | Sabre Oil And Gas Corp. | Houston, TX 77063 | Oil & Gas Operator | Oct 2025 |
| 7 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 8 | Sage Natural Resources LLC | Tulsa, OK 74170 | Oil & Gas Operator | Oct 2025 |
| 9 | Sage Oil And Gas, LLC | Graham, TX 76450 | Gas Operator | Oct 2025 |
| 10 | Salt Of The Earth Energy, LLC | Montgomery, TX 77356 | Oil & Gas Operator | Oct 2025 |
| 11 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 12 | Samson Lone Star LP | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2007 |
| 13 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2025 |
| 14 | Sanco Operating Company | Bullard, TX 75757 | Oil & Gas Operator | Oct 2025 |
| 15 | Sandollar Oil & Gas, Inc. | Hallsville, TX 75650 | Oil & Gas Operator | Feb 1993 |
| 16 | Schalk, Thomas S. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 1995 |
| 17 | Schlittler, Willard | Bryson, TX 76427 | Oil & Gas Operator | Oct 2025 |
| 18 | Schmid Properties Inc | Hico, TX 76457 | Oil & Gas Operator | Oct 2025 |
| 19 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Oct 2025 |
| 20 | Se USA Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2009 |
| 21 | Seattle'S Best Consulting LLC | Austin, TX 78731 | Oil & Gas Operator | Oct 2025 |
| 22 | Self, Charles D. | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2016 |
| 23 | Self, Charles Lynn | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2025 |
| 24 | Selous Energy, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Jul 2015 |
| 25 | Senkel, Wesley, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2007 |
| 26 | Shanks, Bob | Haskell, OK 74436 | Oil Operator | Sep 2002 |
| 27 | Sharp, John T. | Jacksboro, TX 76458 | Oil & Gas Operator | Jul 2014 |
| 28 | Shelley, Richard W | Wichita Falls, TX 76310 | Oil & Gas Operator | Jun 2015 |
| 29 | Shines'S Oil Co. | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2009 |
| 30 | Shoshone Oil Company | Dallas, TX 75244 | Oil & Gas Operator | May 1994 |
| 31 | Siegfried R H Inc | Tulsa, OK 74104 | Oil & Gas Operator | Mar 2008 |
| 32 | Sierra Exploration Company | San Antonio, TX 78209 | Oil & Gas Operator | Mar 2008 |
| 33 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | Oct 2025 |
| 34 | Silver Creek Resources, LLC | Irving, TX 75038 | Oil & Gas Operator | Apr 2017 |
| 35 | Simpson Oil & Land Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 36 | Six C Oil | Bowie, TX 76230 | Oil & Gas Operator | Sep 2011 |
| 37 | Skybridge Energy LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2025 |
| 38 | Slick Production, LLC | Muenster, TX 76252 | Oil & Gas Operator | Oct 2025 |
| 39 | Smith & Spragins | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 1995 |
| 40 | Smith Pipe Of Abilene | Abilene, TX 79608 | Oil & Gas Operator | Oct 2025 |
| 41 | Smith Production Inc. | The Woodlands, TX 77381 | Oil & Gas Operator | Oct 2025 |
| 42 | Snow Operating Co., Inc. | Haltom City, TX 76117 | Oil & Gas Operator | Feb 2024 |
| 43 | Sojourner Drilling Corporation | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 44 | Somerset Operating, LLC | Weatherford, TX 76086 | Gas Operator | Oct 2025 |
| 45 | Southern Alliance Oil Corp. | Grapevine, TX 76099 | Oil & Gas Operator | Oct 2025 |
| 46 | Southlake Operating LLC | Weatherford, TX 76086 | Oil & Gas Operator | Oct 2025 |
| 47 | Spade Energy L.L.C. | Wichita Falls, TX 76310 | Oil & Gas Operator | Oct 2025 |
| 48 | Spiller Oil & Gas Company | Jacksboro, TX 76458 | Oil Operator | Oct 2025 |
| 49 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Oct 2025 |
| 50 | Spragins, Ed | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 51 | Squaw Mountain Oil, LLC | Jacksboro, TX 76458 | Oil Operator | Oct 2025 |
| 52 | St. Johns Operating #1 L.P. | Houston, TX 77060 | Oil & Gas Operator | Aug 2023 |
| 53 | Sta-Kel Incorporated | Graham, TX 76450 | Oil & Gas Operator | Dec 2000 |
| 54 | Staghorn Resources, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2015 |
| 55 | Stamper Operating Co., Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2025 |
| 56 | Star Of Texas Energy SRVS, Inc. | Austin, TX 78702 | Oil & Gas Operator | Oct 2025 |
| 57 | Staub, Larry, Inc. | Azle, TX 76020 | Oil & Gas Operator | Oct 2025 |
| 58 | Steinberger, Gerald | Windthorst, TX 76389 | Oil & Gas Operator | Sep 2007 |
| 59 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 60 | Stephens Energy Corp. | Graham, TX 76450 | Oil & Gas Operator | Feb 2022 |
| 61 | Stephens, Morris | Graham, TX 76450 | Oil & Gas Operator | May 1996 |
| 62 | Stivers Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 1995 |
| 63 | Stober Oil And Gas Services, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 64 | Stone Creek Operating, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Oct 2025 |
| 65 | Stovall Operating Co. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 66 | Strata Operating, Inc. | Corpus Chrsti, TX 78466 | Oil & Gas Operator | Oct 2025 |
| 67 | Stratco Operating Co Inc | Austin, TX 78701 | Oil & Gas Operator | Oct 2025 |
| 68 | Street, Spencer B., Jr. | Graham, TX 76450 | Oil & Gas Operator | Mar 1998 |
| 69 | Strickland, H.W. | Henrietta, TX 76365 | Oil & Gas Operator | Dec 1999 |
| 70 | Sundance Resources, Inc. | Rio VIsta, TX 76093 | Oil & Gas Operator | Mar 2012 |
| 71 | Sunrise Enterprises | Bowie, TX 76230 | Oil & Gas Operator | Dec 2016 |
| 72 | Swan PC, LP | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2025 |
| 73 | Swan Production Co. | Jacksboro, TX 76458 | Oil & Gas Operator | Nov 2009 |
| 74 | Sweetwater Drilling Co., Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Oct 2025 |
| 75 | Synergy Operating Co., LLC | Dallas, TX 75225 | Oil & Gas Operator | Oct 2025 |