Brian C. Crumley

Vortus Investment Advisors (Vortus Investment) is a private equity firm founded in 2013 by Jeffrey W. Miller and Brian C. Crumley. The firm is headquartered in Fort Worth, Texas.

Sirios Capital Management LP (Sirios) is a SEC-registered investment advisor and hedge fund manager headquartered in Boston, Massachusetts. The firm was founded in 1999 by John Brennan, Jr. Sirios provides investment advice to private investment funds, UCITS Funds, registered investment companies, wrap program participants, and certain other institutional clients through separate accounts.

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.

Luther King Capital Management Corp. (LKCM) is the investment advisory firm headquartered in Fort Worth, Texas and has additional offices in Austin, San Antonio, and Dallas. The firm was founded in 1979 by J. Luther King, Jr. and is a subsidiary of Southwest JLK Corp. LKCM provides investment management services to high-net-worth individuals, foundations, endowments, investment companies, pension and profit-sharing plans, trusts and estates, among other organizations.