Houston C. Johnson

Main Street Capital Partners LLC(Main Street Capital Partners) is a private equity firm founded in 1990 by Vincent Foster. The firm is headquartered at Houston, Texas.

Gladiator Energy Services LLC is a private company that specializes in coil tubing services for the oil and gas industry. The company is based in Houston, TX. The company has a fleet of specialized, high-tech units and experienced crews that are committed to getting the job done safely and efficiently. The company's services include strong communication, problem-solving, and responsiveness. The company also prioritizes field safety and have a mission zero safety program to keep their employees and others safe.

Turnbridge Capital LLC (Turnbridge Capital) is a private equity firm founded in 2008 by Todd M. Tomlin, Robert B. Horton and Kent Sweezey. The firm is headquartered in Dallas, Texas.

Natural Gas Partners LLC (NGP) is a private equity firm, a subsidiary of NGP Energy Capital Management, LLC founded in 1988 by David Russell Albin and Kenneth Alfredo Hersh. The firm is headquartered in Dallas, Texas.

Barclays Capital, Inc. is a registered broker/dealer headquartered in New York City. The firm was founded in 1997 and is a subsidiary of Barclays Group US, Inc., ultimately owned by Barclays plc (LON: BARC) in Great Britain. Barclays Capital provides large corporate, government and institutional clients a full spectrum of prime brokerage services which includes equities and fixed income financing, OTC Clearing, Futures and Foreign Exchange Prime Brokerage and access to industry insights and analytics from their Strategic Consulting team.