| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Saba Petroleum Inc. | Oil & Gas Operator | Mar 2006 | |
| 2 | Santa Maria Energy LLC | Oil & Gas Operator | Dec 2024 | |
| 3 | Sentinel Peak Resources California LLC | Oil & Gas Operator | Aug 2025 | |
| 4 | Shell Western E&P Inc. | Houston, TX 77001 | Oil & Gas Operator | May 2011 |
| 5 | Sierra Resources, Inc. | Oklahoma City, OK 73142 | Oil & Gas Operator | Aug 2025 |
| 6 | Southern California Gas Company | Oil & Gas Operator | Aug 2025 |