| 2901 | Sydson D'Oro Exploration Co. | Houston, TX 77079 | Oil & Gas Operator | Jan 1992 |
| 2902 | Sydson Energy, Inc. | Houston, TX 77027 | Oil & Gas Operator | Dec 2025 |
| 2903 | Syj Oil & Gas | San Antonio, TX 78209 | Oil Operator | Sep 2000 |
| 2904 | Syj Oil & Gas, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Dec 2025 |
| 2905 | Sylvan Energy, LLC | Pittsburgh, PA 15211 | Oil & Gas Operator | Dec 2025 |
| 2906 | Sylvan Oil Operating Company | Tulsa, OK 74103-3516 | Oil & Gas Operator | Apr 2016 |
| 2907 | Sylves Robert J | New Florence, PA 15944-7950 | Gas Operator | Dec 2016 |
| 2908 | Sylvite Corp | Tulsa, OK 741363908 | Oil & Gas Operator | Dec 2000 |
| 2909 | Symank, Steve | Olney, TX 76374 | Oil & Gas Operator | Dec 2025 |
| 2910 | Symba American Oil, Inc | Houston, TX 77056 | Oil Operator | Dec 2025 |
| 2911 | Synd Enterprises Inc | Lakewood, NY 14750-9613 | Oil & Gas Operator | Dec 2006 |
| 2912 | Syndex Resources, Inc. | Wellesley, MA 02181-000 | Oil & Gas Operator | Dec 2021 |
| 2913 | Synergex Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Sep 2025 |
| 2914 | Synergy Development Corp | | Oil Operator | Apr 2011 |
| 2915 | Synergy Offshore LLC | Houston, TX 77024 | Oil & Gas Operator | Feb 2022 |
| 2916 | Synergy Oil & Gas LLC | | Oil & Gas Operator | Oct 2025 |
| 2917 | Synergy Oil & Gas, Inc. | Houston, TX 77024 | Oil & Gas Operator | Nov 2019 |
| 2918 | Synergy Oil & Gas, Inc. (A) | Houston, TX 77024 | Oil & Gas Operator | Aug 2001 |
| 2919 | Synergy Oil & Gas, L.P. | Houston, TX 77024 | Oil & Gas Operator | May 2012 |
| 2920 | Synergy Operating Co., LLC | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 2921 | Synergy Operating LLC | Farmington, NM 87499 | Oil & Gas Operator | Jul 2024 |
| 2922 | Synergy Production Company | Houston, TX 77024 | Oil & Gas Operator | Jan 1996 |
| 2923 | Synergy Resources | Artesia, NM 88210 | Oil & Gas Operator | Jan 2015 |
| 2924 | Syntax Energy Corporation | Denton, TX 76210 | Oil Operator | Dec 2025 |
| 2925 | Synthetic Energy Corporation | Houston, TX 77006 | Oil Operator | Dec 2025 |
| 2926 | Szumigala, Edward R. & Ruth A. | Dunkirk, NY 14048 | Gas Operator | Dec 2024 |