| 1 | S & C Construction, Inc. | Whitefish, MT 59937 | Oil & Gas Operator | Oct 2025 |
| 2 | S & P Energy | Benbrook, TX 76126 | Oil & Gas Operator | Oct 1994 |
| 3 | S.B. Street Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 4 | S2 Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2023 |
| 5 | Saber Oil & Gas Ventures, LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 6 | Sable Permian Resources Land,LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2019 |
| 7 | Sable Permian Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2021 |
| 8 | Safari Production Company, Inc. | McAllen, TX 78501 | Oil & Gas Operator | Oct 2025 |
| 9 | Safemark Oil & Gas, LLC | McKinney, TX 75072 | Oil & Gas Operator | Oct 2025 |
| 10 | Saga Petroleum LLC Of Colorado | Norman, OK 73072 | Oil & Gas Operator | Oct 2025 |
| 11 | Sage Energy Company | San Antonio, TX 78215 | Oil & Gas Operator | Oct 2025 |
| 12 | Sagebrush Oilandgas Company,LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2010 |
| 13 | Sahara Operating Company | Midland, TX 79704 | Oil & Gas Operator | Oct 2025 |
| 14 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 15 | Samson Lone Star LP | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2007 |
| 16 | Samson Lone Star, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 17 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2025 |
| 18 | Sandia Production Co., Inc. | Corrales, NM 87048 | Oil & Gas Operator | Oct 2025 |
| 19 | Santa Fe Energy Oper. Part., LP | Houston, TX 77057 | Oil & Gas Operator | Dec 1994 |
| 20 | Santa Fe Snyder Corporation | Houston, TX 77024 | Oil & Gas Operator | Oct 2000 |
| 21 | Sarita Energy Resources, LTD. | Houston, TX 77277 | Oil & Gas Operator | Oct 2025 |
| 22 | Savannah Ross And Company, LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 23 | SBJ Oil & Gas, LLC | Iraan, TX 79744 | Oil & Gas Operator | Oct 2025 |
| 24 | Schlachter, David A. | Dallas, TX 75225 | Oil & Gas Operator | Apr 2015 |
| 25 | Schlachter, David A., Estate Of | Dallas, TX 75225 | Oil & Gas Operator | Jan 2000 |
| 26 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Oct 2025 |
| 27 | SDMB Resources LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 28 | Seay Exploration, Inc. | Midland, TX 79704 | Oil & Gas Operator | Mar 2008 |
| 29 | Sed Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 30 | Sem Operating Company LLC | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 31 | Setex Oil And Gas Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2012 |
| 32 | Sharp Image Energy, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Oct 2025 |
| 33 | Shell Western E&P Inc. | Houston, TX 77001 | Oil & Gas Operator | May 2011 |
| 34 | Shoco Production, L.P. | Kilgore, TX 75663 | Oil & Gas Operator | May 2020 |
| 35 | Sigma Energy & Explor., Co LLC | Ozona, TX 76943 | Oil & Gas Operator | Feb 2010 |
| 36 | Silver Oil & Gas Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Oct 2025 |
| 37 | Sinclair Development, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 38 | Slant Operating, LLC | Lafayette, LA 70503 | Oil & Gas Operator | Oct 2025 |
| 39 | Sledge, H. G., Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2016 |
| 40 | SMC Oil & Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 41 | Smith Brothers Oil & Gas, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 42 | Smith Energy Operating Company | Lubbock, TX 79423 | Oil & Gas Operator | Oct 2025 |
| 43 | Smith Oil Company | Smackover, AR 71762 | Oil Operator | Jan 2025 |
| 44 | Smith Operating And MGMT Co. | Shreveport, LA 71161 | Oil & Gas Operator | Jun 2023 |
| 45 | Smith Pipe Of Abilene | Abilene, TX 79608 | Oil & Gas Operator | Oct 2025 |
| 46 | Sogo III LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2017 |
| 47 | Sojourner Drilling Corporation | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 48 | Sonat Exploration Co. - Midland | Houston, TX 77251 | Oil & Gas Operator | Mar 1999 |
| 49 | Sonat Exploration Company -Tyler | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 50 | Soto Inc. | Ozona, TX 76943 | Oil & Gas Operator | Aug 2020 |
| 51 | Southland Energy Corporation | Houston, TX 77060 | Oil & Gas Operator | Aug 2022 |
| 52 | Southland Royalty Company | Houston, TX 77210 | Oil & Gas Operator | Sep 2011 |
| 53 | Southwest Royalties Inc | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 54 | Speartip Energy, LLC | Katy, TX 77450 | Oil Operator | Oct 2025 |
| 55 | Staley Operating Co. | Midland, TX 79702 | Oil & Gas Operator | Jan 2022 |
| 56 | Stallion Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 57 | Stanolind Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2021 |
| 58 | Stanolind Production LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2020 |
| 59 | Star Of Texas Energy SRVS, Inc. | Austin, TX 78702 | Oil & Gas Operator | Oct 2025 |
| 60 | Star Production, Inc. | Dallas, TX 75360 | Oil & Gas Operator | Oct 2025 |
| 61 | Statex Petroleum Inc | Dallas, TX 75229 | Oil & Gas Operator | Dec 2000 |
| 62 | Stephens, Autry C. | Midland, TX 79701 | Oil & Gas Operator | Mar 2023 |
| 63 | Sterlynn Oil & Gas, Inc. | Harper, TX 78631 | Oil Operator | Oct 2025 |
| 64 | Stone Creek Operating, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Oct 2025 |
| 65 | Stonegate Production Company,LLC | Houston, TX 77024 | Oil & Gas Operator | Oct 2025 |
| 66 | Stout Energy Inc. | Midland, TX 79708 | Oil & Gas Operator | Oct 2025 |
| 67 | Stowe Energy, Inc. | Vernon, TX 76384 | Oil & Gas Operator | Mar 2003 |
| 68 | Strata Operating, Inc. | Corpus Chrsti, TX 78466 | Oil & Gas Operator | Oct 2025 |
| 69 | Stuart Operating, LLC | Ozona, TX 76943 | Oil & Gas Operator | Oct 2025 |
| 70 | Summit Exploration, L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2008 |
| 71 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | Oct 2025 |
| 72 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | May 2025 |
| 73 | Sunset Leases LLC | Ozona, TX 76943 | Oil Operator | Oct 2025 |
| 74 | Surge Solutions, Inc. | Bandera, TX 78003 | Oil Operator | Oct 2025 |
| 75 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |
| 76 | Synergex Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Jun 2025 |