| 1 | Sabine Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 2 | Sabine Oil & Gas LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 3 | Sahara Operating Company | Midland, TX 79704 | Oil & Gas Operator | May 2024 |
| 4 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 5 | Samson Lone Star LP | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2007 |
| 6 | Samson Lone Star, LLC | Tulsa, OK 74103 | Oil & Gas Operator | May 2024 |
| 7 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2024 |
| 8 | San Marco Petroleum Inc | Denver, CO 80293 | Oil & Gas Operator | Jan 2024 |
| 9 | Sandlot Oil & Gas LLC | Gruver, TX 79040 | Oil & Gas Operator | May 2024 |
| 10 | Sanguine Gas Exploration, LLC | Tulsa, OK 74119 | Oil & Gas Operator | May 2024 |
| 11 | Santa Fe Energy Resources, Inc. | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
| 12 | Santa Fe Snyder Corporation | Houston, TX 77024 | Oil & Gas Operator | Oct 2000 |
| 13 | Sbog, LLC | Granbury, TX 76048 | Oil & Gas Operator | Feb 2021 |
| 14 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | May 2024 |
| 15 | Seagull Energy E & P Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2015 |
| 16 | Seagull Midcon Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 17 | Shell Western E&P Inc. | Houston, TX 77001 | Oil & Gas Operator | May 2011 |
| 18 | Sidwell Oil & Gas, Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Sep 2014 |
| 19 | SLT Dakota Operating, Inc. | Yukon, OK 73099 | Oil & Gas Operator | May 2024 |
| 20 | Southwest Royalties Inc | Midland, TX 79710 | Oil & Gas Operator | May 2024 |
| 21 | Spring Resources, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2007 |
| 22 | St. Johns Operating #1 L.P. | Houston, TX 77060 | Oil & Gas Operator | Aug 2023 |
| 23 | Stallion Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Oct 2017 |
| 24 | Statex Petroleum Inc | Dallas, TX 75229 | Oil & Gas Operator | Dec 2000 |
| 25 | Sting Exploration Company | Tulsa, OK 74120 | Oil Operator | Sep 2004 |
| 26 | Strat Land Exploration Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2024 |
| 27 | Summit Resources MGMT., LLC. | Edmond, OK 73083 | Oil & Gas Operator | May 2024 |
| 28 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jan 2024 |
| 29 | Suoco Oil Corporation | Pampa, TX 79066 | Oil & Gas Operator | May 2024 |