| 1 | Saber Oil & Gas Ventures, LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 2 | Sabinal Energy Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2025 |
| 3 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 4 | Saddleback Exploration, LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2024 |
| 5 | Saga Pet. LTD Liability Co Of Co | Midland, TX 79701 | Oil & Gas Operator | Apr 2004 |
| 6 | Saga Petroleum LLC Of Colorado | Norman, OK 73072 | Oil & Gas Operator | Oct 2025 |
| 7 | Sage Energy Company | San Antonio, TX 78215 | Oil & Gas Operator | Oct 2025 |
| 8 | Saguaro Petroleum, LLC | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 9 | Sahara Operating Company | Midland, TX 79704 | Oil & Gas Operator | Oct 2025 |
| 10 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 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 Lone Star, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 14 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2025 |
| 15 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Oct 2025 |
| 16 | Santa Fe Energy Resources, Inc. | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
| 17 | Santa Fe Snyder Corporation | Houston, TX 77024 | Oil & Gas Operator | Oct 2000 |
| 18 | Sarita Energy Resources, LTD. | Houston, TX 77277 | Oil & Gas Operator | Oct 2025 |
| 19 | Satanta Oil Company | Midland, TX 79704 | Oil & Gas Operator | Oct 2025 |
| 20 | Savannah Ross And Company, LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 21 | Schalk Oil Company, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 22 | Schlachter Operating Corporation | Dallas, TX 75225 | Oil & Gas Operator | Oct 2025 |
| 23 | Schlachter, David A. | Dallas, TX 75225 | Oil & Gas Operator | Apr 2015 |
| 24 | Schlachter, David A., Estate Of | Dallas, TX 75225 | Oil & Gas Operator | Jan 2000 |
| 25 | Schlagal, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2016 |
| 26 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Oct 2025 |
| 27 | Scythian, LTD. | Midland, TX 79701 | Oil & Gas Operator | Dec 2020 |
| 28 | SDG Resources L.P. | Montrose, CO 81402 | Oil & Gas Operator | May 2006 |
| 29 | Seaboard Oil Company | Midland, TX 79710 | Oil & Gas Operator | Mar 2008 |
| 30 | Seaboard Operating Co. | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 31 | Seco Production Company | Midland, TX 79708 | Oil & Gas Operator | Aug 2003 |
| 32 | Sha-Jam Operating Corp. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 33 | Shell Western E&P | Houston, TX 77001 | Oil & Gas Operator | Oct 2025 |
| 34 | Shell Western E&P Inc. | Houston, TX 77001 | Oil & Gas Operator | May 2011 |
| 35 | Sheridan Production Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2025 |
| 36 | Shidler, Mark L., Inc. | Houston, TX 77055 | Oil & Gas Operator | Oct 2025 |
| 37 | Shifflett Operating Company | Snyder, TX 79550 | Oil & Gas Operator | Oct 2025 |
| 38 | Shinnery Oil Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 39 | Siana Oil & Gas | Conroe, TX 77305 | Oil & Gas Operator | Oct 2025 |
| 40 | Simpson Oil Company | Odessa, TX 79760 | Oil & Gas Operator | Oct 2004 |
| 41 | Slack, R. C. | Pecos, TX 79772 | Oil & Gas Operator | Jul 2000 |
| 42 | Slant Operating, LLC | Lafayette, LA 70503 | Oil & Gas Operator | Oct 2025 |
| 43 | Smith & Marrs Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2021 |
| 44 | Sogo III LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2017 |
| 45 | Sojourner Drilling Corporation | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 46 | Southern Bay Operating, L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Jun 2013 |
| 47 | Southland Royalty Company | Houston, TX 77210 | Oil & Gas Operator | Sep 2011 |
| 48 | Southwest Royalties Inc | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 49 | Southwest-Operating | Penwell, TX 79776 | Oil & Gas Operator | Oct 2025 |
| 50 | St. Clair Energy Corporation | Tulsa, OK 74153 | Oil & Gas Operator | Mar 2008 |
| 51 | St. Johns Operating #1 L.P. | Houston, TX 77060 | Oil & Gas Operator | Aug 2023 |
| 52 | Stanolind Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2021 |
| 53 | Stephens, Autry C. | Midland, TX 79701 | Oil & Gas Operator | Mar 2023 |
| 54 | Stetson Petroleum Corp. | Rollins, MT 59931 | Oil & Gas Operator | Oct 2025 |
| 55 | Stickney Oil & Gas, Inc. | Midland, TX 79704 | Oil & Gas Operator | Nov 2014 |
| 56 | Stickney, F. C., Inc. | Midland, TX 79704 | Oil & Gas Operator | Oct 1998 |
| 57 | Strata Petroleum Co. | Midland, TX 79701 | Oil & Gas Operator | May 1997 |
| 58 | Success Oil Company, Inc. | Beverly Hills, CA 90211 | Oil & Gas Operator | Oct 2025 |
| 59 | Sue-Ann Operating, L.C. | Victoria, TX 77903 | Oil & Gas Operator | Oct 2025 |
| 60 | Sunday Corporation | Olney, TX 76374 | Oil & Gas Operator | Oct 2025 |
| 61 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | Oct 2025 |
| 62 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | May 2025 |
| 63 | Sunergon Oil Operating, LLC | Gainesville, TX 76240 | Oil Operator | Oct 2025 |
| 64 | Sunray Energy, Inc. | Round Rock, TX 78683 | Oil & Gas Operator | Nov 2018 |
| 65 | Swanson, Tommy Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Mar 2017 |