| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Hallador Petroleum LLP | Denver, CO 80264 | Oil & Gas Operator | Feb 2019 |
| 2 | Hanson Operating Company Inc | Roswell, NM 88202 | Oil & Gas Operator | Jul 2025 |
| 3 | Herbaly Petroleum Corp | FT Worth, TX 76102 | Oil & Gas Operator | Feb 2002 |
| 4 | HMX Investments, Inc. | Katy, TX 77494 | Oil & Gas Operator | Jun 2025 |
| 5 | Huntington Energy LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Oct 2025 |