John McGoldrick

Caza Oil & Gas, Inc. engages in the acquisition, exploration, development, and production of oil and natural gas reserves. The company was founded in 2006 and is headquartered in The Woodlands, TX.

Vanguard Natural Resources LLC is an oil and natural gas exploration company, which focuses on the acquisition and development of mature long-lived natural gas and oil properties. Its properties are located in the Appalachian Basin in Kentucky and Tennessee; the Permian Basin in West Texas and New Mexico; and the Big Horn Basin in Wyoming and Montana. The company was founded in October 2006 and is headquartered in Houston, TX.

Verdant Technology Corp. develops solutions for the global energy industry. The firm operates as a technology acquisition and development company. It acquires and develops technologies for the oil and gas and alternative energy sector. The company was founded on October 12, 1995 and is headquartered in Houston, TX.

Part of Star Energy Group Plc, Dart Energy International Pte Ltd explores and produces petroleum and natural gas. The private company is based in Singapore, Singapore. Dart Energy International was acquired by Dart Energy Pty Ltd., part of Star Energy Group Plc from October 22, 2014 on November 08, 2011 for $20.36 million.