Jim Derryberry

Riverstone Holdings LLC operates as an energy focused investment manager. It conducts buyout and growth capital investments in the exploration and production, midstream, oilfield services, power, and renewable sectors of the energy industry. The company was founded by David Matthew Leuschen and Pierre Fernard Lapeyre, Jr. in 2000 and is headquartered in New York, NY.

Goldman Sachs & Co. LLC (GS&Co.) is a securities brokerage firm headquartered in New York City. Founded in 1927, the firm is a subsidiary of The Goldman Sachs Group, Inc. (NYSE: GS). GS&Co. provides services to help hedge funds manage risk, monitor portfolios, maintain liquidity and build their businesses. They offer clients access to global equity and derivatives markets, as well as foreign exchange, commodities, European Lefts, rates and credit across the Americas, Europe and Asia. The firm proactively monitors capital markets, searching for pockets of liquidity and news that may require changes to those strategies. Integration with the Goldman Sachs network gives clients access to the firm's sectored block trades and their insights into price discovery. Their electronic trading program provides clients with tools to manage their trades from pre-trade analytics to post-trade analysis.

JPMorgan Investment Management, Inc. (JPMIM) is a global, SEC-registered investment advisor headquartered in New York City. The firm was founded in 2000 as the result of Chase Manhattan's purchase of Robert Fleming Holdings and the subsequent merger of Chase and JPMorgan. In January 2010, JPMorgan Investment Advisors merged into JP Morgan Investment Management. JPMIM is a subsidiary of JPMorgan Asset Management Holdings, Inc., ultimately owned by JPMorgan Chase & Co. (NYSE: JPM). The firm primarily provides investment advisory services to both US and non-US institutional and retail clients.

Atlantic Richfield Co. provides oil and gas extraction and production services . The firm's exploration and production operations are focused primarily in the Gulf of Mexico and the midcontinent in the United States, the United Kingdom North Sea, Indonesia, China and Algeria. The company was incorporated on April 15, 1985 and is headquartered in Warrenville, IL.

USA Compression GP LLC provides compression services. The company is headquartered in New York, NY.