| 401 | VRK Operating Company Inc | Fort Worth, TX 76109-7430 | Oil & Gas Operator | Sep 1994 |
| 402 | VSP Operating, LLC | Castle Rock, CO 80108 | Oil Operator | Apr 2026 |
| 403 | VT Energy Partners, LLC | Andover, KS 67002 | Oil & Gas Operator | Dec 2019 |
| 404 | VT VIstatex Energy LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2026 |
| 405 | Vtex Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Apr 2026 |
| 406 | VTX Energy Operating, LLC | Austin, TX 78730 | Oil & Gas Operator | Apr 2026 |
| 407 | Vukasovich Drilling | | Oil & Gas Operator | Mar 1988 |
| 408 | Vul-Tex Corporation | Pampa, TX 79065 | Oil & Gas Operator | Jan 2024 |
| 409 | Vulcan Resources, LLC | Skiatook, OK 74070 | Oil Operator | Mar 2024 |
| 410 | VVWF Oil Inc | Oklahoma City, OK 73143-7375 | Gas Operator | Feb 1994 |
| 411 | VX Operating, LLC | Abilene, TX 79605 | Oil & Gas Operator | Apr 2026 |