| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 401 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Jul 2026 |
| 402 | Zachry Exploration, Inc. | San Antonio, TX 78205 | Oil & Gas Operator | Jul 2026 |
| 403 | Zachry, H. B. Company | San Antonio, TX 78205 | Oil & Gas Operator | Apr 1994 |