BOARD OF DIRECTORS

Robert M. Tichio

Mr. Tichio has been a member of our Board since September 2013. Mr. Tichio is a Partner of Riverstone Holdings LLC and joined Riverstone in 2006. Prior to joining Riverstone, Mr. Tichio was in the Principal Investment Area of Goldman Sachs which manages the firm's private corporate equity investments. Mr. Tichio began his career at J.P. Morgan in the Mergers & Acquisitions group where he concentrated on assignments that included public company combinations, asset sales, takeover defenses and leveraged buyouts. In addition to serving on the boards of a number of Riverstone portfolio companies and their affiliates, Mr. Tichio has been a director of Centennial Resource Development, Inc. since October 2016. Mr. Tichio previously served as a member of the board of directors of Gibson Energy (TSE:GEI) from 2008 to 2013, Midstates Petroleum Company, Inc. from 2012 to 2015 and Northern Blizzard Resources Inc. from June 2011 to May 2017. He holds an MBA from Harvard Business School and a bachelor's degree from Dartmouth College.

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