| 1 | S & H Oil Company | Vernon, TX 76384 | Oil & Gas Operator | Sep 1999 |
| 2 | S & J Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2015 |
| 3 | S&G Oil LLC | Wichita Falls, TX 76309 | Oil & Gas Operator | Feb 2026 |
| 4 | S.B. Street Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 5 | Saba Energy Of Texas Inc | Houston, TX 77042 | Oil & Gas Operator | Jul 2007 |
| 6 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 7 | Sandollar Oil & Gas, Inc. | Hallsville, TX 75650 | Oil & Gas Operator | Feb 1993 |
| 8 | Scan Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2004 |
| 9 | Schaefer, Gary L. | Holliday, TX 76366 | Oil & Gas Operator | Mar 2017 |
| 10 | Schalk, Thomas S. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 1995 |
| 11 | Schenk Oil Co. | Scotland, TX 76379 | Oil Operator | Feb 2026 |
| 12 | Scheriger Production | Graham, TX 76450 | Oil & Gas Operator | Jun 2006 |
| 13 | Schlittler, Willard | Bryson, TX 76427 | Oil & Gas Operator | Feb 2026 |
| 14 | Schreiber, Lloyd | Scotland, TX 76379 | Oil & Gas Operator | Dec 2000 |
| 15 | Scott, Stephen | Olney, TX 76374 | Oil Operator | Oct 2011 |
| 16 | Scribner, Jeff | Wichita Falls, TX 76302 | Oil & Gas Operator | Dec 2004 |
| 17 | Seel-Mac Oil & Gas LLC | Richardson, TX 75080 | Oil Operator | Jul 2011 |
| 18 | Seely Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 19 | Seelye, William L. | Plano, TX 75024 | Oil & Gas Operator | Oct 2005 |
| 20 | Seisma Drilling Corporation | Wichita Falls, TX 76301 | Oil Operator | Aug 2003 |
| 21 | Seismotech Energy, Incorporated | Plano, TX 75075 | Oil & Gas Operator | Aug 2003 |
| 22 | Seneca Exploration, LLC | Wichita Falls, TX 76308 | Oil Operator | Feb 2026 |
| 23 | Sep, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1994 |
| 24 | Service Clearing Corp | Dallas, TX 75229 | Oil & Gas Operator | Feb 2026 |
| 25 | Shanks, Bob | Haskell, OK 74436 | Oil Operator | Sep 2002 |
| 26 | Shappell Oil Company | Holliday, TX 76366 | Oil & Gas Operator | Sep 2012 |
| 27 | Shappell Oil Company, L.L.C. | Harrisonburg, LA 71340 | Oil & Gas Operator | Feb 2026 |
| 28 | Shawver & Shawver | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 29 | Shearer Oil Company | Graham, TX 76450 | Oil & Gas Operator | May 2002 |
| 30 | Shell Western E&P Inc. | Houston, TX 77001 | Oil & Gas Operator | May 2011 |
| 31 | Shelley, Richard W | Wichita Falls, TX 76310 | Oil & Gas Operator | Jun 2015 |
| 32 | Sherley, O. C. | Megargel, TX 76370 | Oil & Gas Operator | Aug 2003 |
| 33 | SHL Operating | Lubbock, TX 79416 | Oil & Gas Operator | Feb 2026 |
| 34 | Shoshone Oil Company | Dallas, TX 75244 | Oil & Gas Operator | May 1994 |
| 35 | Sierra Exploration Company | San Antonio, TX 78209 | Oil & Gas Operator | Mar 2008 |
| 36 | Simmons, Stanley J. | Olney, TX 76374 | Oil & Gas Operator | Aug 1994 |
| 37 | Sissom Oil | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 38 | Sissom Oil Field Services, LLC | Graham, TX 76450 | Oil Operator | Feb 2026 |
| 39 | Skinner, W. E. | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2026 |
| 40 | SKS Oil | Olney, TX 76374 | Oil & Gas Operator | Feb 2026 |
| 41 | Sky Development Corporation | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 42 | Skybridge Energy LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 43 | Slant Operating, LLC | Lafayette, LA 70503 | Oil & Gas Operator | Feb 2026 |
| 44 | Slate Holdings, Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Feb 2026 |
| 45 | Smith Pipe Of Abilene | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 46 | Smith, David | Wichita Falls, TX 76310 | Oil Operator | Feb 2026 |
| 47 | Smith, Ted H. | Wichita Falls, TX 76310 | Oil & Gas Operator | Sep 1998 |
| 48 | Smulcer, Jimmy A. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2002 |
| 49 | Socorro Exploration, Inc. | Lubbock, TX 79464 | Oil & Gas Operator | Feb 2026 |
| 50 | Southern Exploration, Inc. | Fort Worth, TX 76137 | Oil & Gas Operator | Aug 2023 |
| 51 | Southwest Royalties, Inc. | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 52 | Spearco Oil | Electra, TX 76360 | Oil & Gas Operator | Aug 2003 |
| 53 | Special JHR Corp | Bridgeville, PA 15017 | Oil & Gas Operator | Feb 2026 |
| 54 | SPH Development, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Nov 2022 |
| 55 | Spitfire Partners, LLC | Dallas, TX 75225 | Oil Operator | Feb 2026 |
| 56 | Spragins, Ed | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 57 | Springfield Oil Services, Inc. | Mamaroneck, NY 10543 | Oil & Gas Operator | Feb 2026 |
| 58 | Spruiell Drilling Co., Inc. | Holliday, TX 76366 | Oil & Gas Operator | Feb 2026 |
| 59 | Squyres Oil Co., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2024 |
| 60 | Stagg Investment Group, Inc. | Midland, TX 79701 | Oil Operator | May 2013 |
| 61 | Stamper Operating Co., Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 62 | Star Production, Inc. | Dallas, TX 75360 | Oil & Gas Operator | Feb 2026 |
| 63 | Startex Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 64 | Staub, Larry, Inc. | Azle, TX 76020 | Oil & Gas Operator | Feb 2026 |
| 65 | Steinberger, D. | Windthorst, TX 76389 | Oil & Gas Operator | Oct 1995 |
| 66 | Steinberger, Gerald | Windthorst, TX 76389 | Oil & Gas Operator | Sep 2007 |
| 67 | Stelucan Energy, LLC | Wichita Falls, TX 76310 | Oil & Gas Operator | Feb 2026 |
| 68 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 69 | Stephens, Autry C. | Midland, TX 79701 | Oil & Gas Operator | Mar 2023 |
| 70 | Stevens & Tull, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 2000 |
| 71 | Stone & Williams Oil&Gas Co.,Inc | Holliday, TX 76366 | Oil Operator | Apr 2013 |
| 72 | Stone, B. W. | Holliday, TX 76366 | Oil & Gas Operator | Feb 2012 |
| 73 | Stone, Gregory W. | Holliday, TX 76366 | Oil & Gas Operator | Feb 2026 |
| 74 | Stonebriar Oil LLC | Frisco, TX 75034 | Oil & Gas Operator | Feb 2026 |
| 75 | Stoneriver Energy, LLC | Lubbock, TX 79424 | Oil & Gas Operator | Feb 2026 |
| 76 | Stovall Operating Co. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 77 | Strange, D. D. | Archer City, TX 76351 | Oil & Gas Operator | Sep 2014 |
| 78 | Strange, Joyce Marital Trust | Holliday, TX 76366 | Oil Operator | May 2008 |
| 79 | Strawn DRLG. Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2005 |
| 80 | Stroube Energy Corporation | Dallas, TX 75248 | Oil & Gas Operator | Jan 2012 |
| 81 | Stubbs Operating Co. | Archer City, TX 76351 | Oil & Gas Operator | Aug 1998 |
| 82 | Stults, Joe K. | Archer City, TX 76351 | Oil & Gas Operator | Mar 2007 |
| 83 | Stuteville Oil Co. | Olney, TX 76374 | Oil & Gas Operator | Aug 2004 |
| 84 | Stuteville, Jack | Olney, TX 76374 | Oil Operator | Feb 2026 |
| 85 | Summit Resources, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2016 |
| 86 | Sunday Corporation | Olney, TX 76374 | Oil & Gas Operator | Feb 2026 |
| 87 | Sundial Resources, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 88 | Swanson & Vestal | Electra, TX 76360 | Oil & Gas Operator | Oct 1997 |
| 89 | Swanson, Tommy Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Mar 2017 |
| 90 | SWJN Oil Company | Kilgore, TX 75663 | Oil Operator | Feb 2026 |
| 91 | Symank, Steve | Olney, TX 76374 | Oil & Gas Operator | Feb 2026 |