| 1 | S & J Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2015 |
| 2 | S.B. Street Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 3 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 4 | Safari Resources, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 5 | Salient Energy, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 6 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 7 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2025 |
| 8 | SBG Resources Group LLC | Frisco, TX 75035 | Oil Operator | Oct 2025 |
| 9 | SBS Oil Company | Austin, TX 78749 | Oil & Gas Operator | Oct 2025 |
| 10 | Scan Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2004 |
| 11 | Schalk, Thomas S. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 1995 |
| 12 | Scheriger Production | Graham, TX 76450 | Oil & Gas Operator | Jun 2006 |
| 13 | Schlittler, Willard | Bryson, TX 76427 | Oil & Gas Operator | Oct 2025 |
| 14 | Scott, Stephen | Olney, TX 76374 | Oil Operator | Oct 2011 |
| 15 | Scully And Smith Oil Corporation | Salado, TX 76571 | Oil & Gas Operator | Feb 1995 |
| 16 | Seattle'S Best Consulting LLC | Austin, TX 78731 | Oil & Gas Operator | Oct 2025 |
| 17 | Seely Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 18 | Seisma Drilling Corporation | Wichita Falls, TX 76301 | Oil Operator | Aug 2003 |
| 19 | Senkel, Wesley, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2007 |
| 20 | Shamrock Minerals Corporation | Merkel, TX 79536 | Oil & Gas Operator | Nov 1998 |
| 21 | Shanafelt Oil Operating, LLC | Jacksboro, TX 76458 | Oil Operator | Oct 2025 |
| 22 | Shanafelt, Arthur | Jacksboro, TX 76458 | Oil & Gas Operator | May 2003 |
| 23 | Shanks, Bob | Haskell, OK 74436 | Oil Operator | Sep 2002 |
| 24 | Shearer Oil Company | Graham, TX 76450 | Oil & Gas Operator | May 2002 |
| 25 | Shell Western E&P Inc. | Houston, TX 77001 | Oil & Gas Operator | May 2011 |
| 26 | Shoshone Oil Company | Dallas, TX 75244 | Oil & Gas Operator | May 1994 |
| 27 | Siegfried R H Inc | Tulsa, OK 74104 | Oil & Gas Operator | Mar 2008 |
| 28 | Sierra Exploration Company | San Antonio, TX 78209 | Oil & Gas Operator | Mar 2008 |
| 29 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | Oct 2025 |
| 30 | Silver Creek Resources, LLC | Irving, TX 75038 | Oil & Gas Operator | Apr 2017 |
| 31 | Silver Pines Energy Corp. | Houston, TX 77005 | Oil & Gas Operator | May 2025 |
| 32 | Simmons, Stanley J. | Olney, TX 76374 | Oil & Gas Operator | Aug 1994 |
| 33 | Simpson Oil & Land Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 34 | Siroco Operating Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2010 |
| 35 | Skinner, W. E. | Wichita Falls, TX 76301 | Oil & Gas Operator | Oct 2025 |
| 36 | SKS Oil | Olney, TX 76374 | Oil & Gas Operator | Oct 2025 |
| 37 | Sky Development Corporation | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 38 | Sky Resources, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 39 | Slate Holdings, Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Oct 2025 |
| 40 | Slick Production, LLC | Muenster, TX 76252 | Oil & Gas Operator | Oct 2025 |
| 41 | Smith Operating And MGMT Co. | Shreveport, LA 71161 | Oil & Gas Operator | Jun 2023 |
| 42 | Smith Pipe Of Abilene | Abilene, TX 79608 | Oil & Gas Operator | Oct 2025 |
| 43 | Smith, David | Wichita Falls, TX 76310 | Oil Operator | Oct 2025 |
| 44 | Smith, E. J. | Fort Worth, TX 76137 | Oil & Gas Operator | Oct 2025 |
| 45 | Snyder Drilling Corp. | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 46 | Southern Alliance Oil Corp. | Grapevine, TX 76099 | Oil & Gas Operator | Oct 2025 |
| 47 | Southlake Exploration, Inc. | Southlake, TX 76092 | Oil & Gas Operator | Oct 2025 |
| 48 | Spence Energy Company | Dallas, TX 75360 | Oil & Gas Operator | Oct 2025 |
| 49 | SPH Development, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Nov 2022 |
| 50 | Spitfire Partners, LLC | Dallas, TX 75225 | Oil Operator | Oct 2025 |
| 51 | Spivey, R. L. | Olney, TX 76374 | Oil Operator | Jul 2005 |
| 52 | Spruiell Drilling Co., Inc. | Holliday, TX 76366 | Oil & Gas Operator | Oct 2025 |
| 53 | Square One Corporation | Giddings, TX 78942 | Oil & Gas Operator | Dec 2012 |
| 54 | Sta-Kel Incorporated | Graham, TX 76450 | Oil & Gas Operator | Dec 2000 |
| 55 | Stagg Investment Group, Inc. | Midland, TX 79701 | Oil Operator | May 2013 |
| 56 | Stamper Operating Co., Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2025 |
| 57 | Steele, Mark E. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 58 | Steinberger, D. | Windthorst, TX 76389 | Oil & Gas Operator | Oct 1995 |
| 59 | Steinberger, Gerald | Windthorst, TX 76389 | Oil & Gas Operator | Sep 2007 |
| 60 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 61 | Stevens & Tull, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 2000 |
| 62 | Stewart Construction | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 63 | Stewart, James G. | Graham, TX 76450 | Oil & Gas Operator | Sep 2019 |
| 64 | Stivers Inc | Graham, TX 76450 | Oil & Gas Operator | May 2003 |
| 65 | Stivers Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 1995 |
| 66 | Stober Oil And Gas Services, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 67 | Stonebriar Oil LLC | Frisco, TX 75034 | Oil & Gas Operator | Oct 2025 |
| 68 | Stoneburner Exploration, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Oct 1997 |
| 69 | Stoneriver Energy, LLC | Lubbock, TX 79424 | Oil & Gas Operator | Oct 2025 |
| 70 | Stovall Operating Co. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 71 | Stovall, Troy | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 72 | Strange, D. D. | Archer City, TX 76351 | Oil & Gas Operator | Sep 2014 |
| 73 | Stratco Operating Co Inc | Austin, TX 78701 | Oil & Gas Operator | Oct 2025 |
| 74 | Street, Spencer B., Jr. | Graham, TX 76450 | Oil & Gas Operator | Mar 1998 |
| 75 | Stroube Energy Corporation | Dallas, TX 75248 | Oil & Gas Operator | Jan 2012 |
| 76 | Stuteville Oil Co. | Olney, TX 76374 | Oil & Gas Operator | Aug 2004 |
| 77 | Subsurface Energy Corp. | Coleman, TX 76834 | Oil & Gas Operator | Oct 2025 |
| 78 | Sunday Corporation | Olney, TX 76374 | Oil & Gas Operator | Oct 2025 |
| 79 | Sundial Resources, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 80 | Sutherland Energy Co., LLC | Bridgeport, TX 76426 | Oil & Gas Operator | Oct 2025 |
| 81 | Swanner Properties | Wichita Falls, TX 76309 | Oil & Gas Operator | Oct 2025 |
| 82 | Sweetwater Drilling Co., Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Oct 2025 |
| 83 | Swenson, Clifford E. | Henrietta, TX 76365 | Oil & Gas Operator | Oct 2025 |
| 84 | SWJN Oil Company | Kilgore, TX 75663 | Oil Operator | Oct 2025 |
| 85 | Symba American Oil, Inc | Houston, TX 77056 | Oil Operator | Oct 2025 |
| 86 | Synergy Operating Co., LLC | Dallas, TX 75225 | Oil & Gas Operator | Oct 2025 |