Jerry Vane Swank

Matador Petroleum Corp. previously engaged in exploring, developing, producing and selling of crude oil and natural gas products. Its name was changed to Matador Resources Co. following the sale of its assets to Tom Brown, Inc. It was headquartered in Dallas, TX.

Cushing Asset Management LP is a SEC-registered investment advisor headquartered in Dallas, Texas. The firm was founded by Jerry Swank in 2003 and they are a wholly-owned subsidiary of Swank Capital LLC. Cushing Asset Management provides investment management services on a discretionary basis to high net-worth individuals and institutional investors through Private Funds, Mutual Funds, ETFs, Closed-End Funds and Managed Accounts. They also offer discretionary investment management services as part of various wrap fee programs offered by investment advisers/broker-dealers.

E-T Energy Ltd. develops, operates, produces, and sells recoverable bitumen extraction from the oil sands. It uses the electro-thermal dynamic stripping process for the in situ production of bitumen from oil sands deposits, which is an electro-thermal process that couples electrical heating with heat transfer by convection and conduction, using a drilled grid of electrode and extraction wells. The company was founded by Bruce C.W. McGee and George T. Stapleton II on July 26, 2004 and is headquartered in Calgary, Canada.

NXG Cushing Midstream Energy Fund is a non-diversified, closed-end management investment company. Its investment objective is to obtain a high after-tax total return from a combination of capital appreciation and current income. The company was founded on May 23, 2007 and is headquartered in Dallas, TX.

Cushing Energy Income Fund is a non-diversified, closed-end management investment company. The company's investment objective through investments in public and private energy companies. Its objective is to seek a high total return with an emphasis on current income by investing in a portfolio of energy-related US royalty trusts and Canadian royalty trusts, and exploration and production companies. The company was founded on July 18, 2011 and is headquartered in Dallas, TX.

IHS Herold, Inc. is an investment research firm headquartered in Norwalk, Connecticut. The firm was founded in 1948 and is a subsidiary of IHS Markit, Inc., which is owned by S&P Global, Inc. (NYSE: SPGI). IHS Herold typically offers research, advisory and strategic planning advice on company evaluations, company strategies and associated company and industry transactions for energy-related domestic and foreign equity securities.

Swank Capital LLC is an independent investment advisory firm headquartered in Dallas, Texas. The firm was founded by Jerry Swank in 2001 and provides investment advice to individual and institutional clients.

Central Energy GP LLC distributes, transports, and markets liquefied petroleum gas. The company is headquartered in Dallas, TX.