| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Hadley/Jackson Energy LLC | Lake Forest, IL 60045 | Oil & Gas Operator | Aug 2025 |
| 2 | Harper Oil Co. | Denver, CO 80217 | Oil & Gas Operator | Jun 2025 |
| 3 | Hedges Spencer | Casper, WY 82604 | Oil Operator | Mar 2024 |
| 4 | Hoff Elmer & Mildred | Oil & Gas Operator | Jan 1991 | |
| 5 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | Oct 2025 |
| 6 | Hondo Oil & Gas | Houston, TX 77042 | Oil & Gas Operator | Oct 1995 |