Christopher Walker

First Reserve Management LP (First Reserve) is a private equity firm founded in 1983. The firm is headquartered in Stamford, Connecticut.

Citibank NA engages in the provision of banking services. It offers retail and commercial banking; credit cards; banking, capital markets, and advisory; markets and securities services; private banking; and treasury and trade solutions. The company was founded on June 16, 1812 and is headquartered in New York, NY.

Atlas Resources LLC engages in the development and production of natural oil and gas. The company was founded in October 2011 and is headquartered in Pittsburgh, PA.

Atlas Growth Partners LP engages in the production of natural gas and oil. It focuses on the development and growth of energy enterprises. The company was founded in February 2013 and is headquartered in Philadelphia, PA.

Duke University is an academic university that offers undergraduate, graduate and professional programs. It also has publications and research services. The university was founded in 1838 and is headquartered in Durham, NC.

Deloitte & Touche LLP engages in the provision of audit, advisory, financial advisory, tax, and consulting services. The company was founded on March 7, 1995 and is headquartered in New York, NY.

Part of Targa Resources Corp., Targa Pipeline Partners GP LLC is a company that provides natural gas gathering, processing and treating services. The company is based in Philadelphia, PA.

Laredo Energy develops natural gas reserves. The company is in the process of acquiring leases and drilling wells based on approximately 1,100 square miles of 3-D seismic data. The company was founded by Scott G. Stevenson, Glenn D. Hart and Steven B. Jaques in October 2001 and is headquartered in Houston, TX.

Atlas Energy, Inc. operates as an independent natural gas producers in the Appalachian and Michigan Basins. It also develops in the Marcellus Shale in Pennsylvania. The company was founded in September 2000 and is headquartered in Moon Township, PA.

UBS Investment Bank provides investment banking and securities brokerage services. Its clients include institutional and corporate clients, intermediaries, governments, and hedge funds. The firm also provides merger and acquisition advisory, private placement, investment research, foreign exchange, equity, and leverage finance advisory services. The firm is headquartered in San Francisco, CA.

Atlas Pipeline Holdings GP LLC provides mid stream energy services. It is engaged in transmission, gathering and processing of natural gas in the mid-continent primarily Oklahoma, Arkansas, Texas and Appalachian. The company is located in Philadelphia, PA.

Riverstone Investment Group LLC (Riverstone Investment Group) is a private equity firm, subsidiary of Riverstone Holdings LLC, founded in 2000 by Pierre F. Lapeyre, Jr. and David M. Leuschen. The firm is headquartered in New York.

DGOC Series 28 LP is a developer and producer of natural gas, crude oil, and natural gas liquids, which operates wells located in Pennsylvania. The company was founded on July 6, 2017 and is headquartered in Fort Worth, TX.

DGOC Series 18B LP engages in the development and producing of natural gas, crude oil, and natural gas liquids through Atlas Resources, LLC, which is an indirect subsidiary of Titan Energy, LLC. The company was founded on July 6, 2017 and is headquartered in Fort Worth, TX.

DGOC SERIES 18(C) LP operates a limited partnership with the purpose of holding Atlas Public #18C''s in Pennsylvania and Tennessee. The company was founded on July 6, 2017 and is headquartered in Fort Worth, Texas.

Seawolf Parent, Inc. provides oil and gas services. The private company is based in Midland, TX.

Whitehawk Income Corp. operates as an oil and gas resources company. The company is based in Philadelphia, PA.

ARP Rangely Production LLC engages in oil and gas leasing and supporting activities. The company is headquartered in Philadelphia, PA.