| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | H And H Star Energy Inc Dba Petrostar Energy | Oil & Gas Operator | Feb 2004 | |
| 2 | Hardy And Hardy Consulting LLC | Oil & Gas Operator | Jul 2025 | |
| 3 | Hawkins Oil Of Michigan Inc | Oil & Gas Operator | Aug 2003 | |
| 4 | Hound Resources LLC | Oil & Gas Operator | Jul 2025 | |
| 5 | HRF Exploration & Production,Inc | Denver, CO 80237 | Oil & Gas Operator | Mar 2009 |