D. Mark Leland

Mr. Leland joined the Equitrans Midstream Board of Directors in January 2020 and currently serves as a member of Equitrans Midstream’s Audit Committee and the Management Development and Compensation Committee. Previously, Mr. Leland served as interim chief executive officer of Deltic Timber Corporation (Deltic Timber) from October 2016 to March 2017, prior to its merger with Potlatch Corporation to form PotlatchDeltic Corporation (a publicly traded timberland real estate investment trust) (PotlatchDeltic) in February 2018. Mr. Leland has served as a director of PotlatchDeltic since February 2018 and Altus Midstream Company (and its predecessor) (a publicly traded midstream company providing gathering processing and transportation services in the Permian Basin) since April 2016. Previously, he served as a director and chair of the audit committee of Deltic Timber from June 2016 to February 2018 and the general partner of RMP from December 2014 until its merger with EQM in July 2018. Mr. Leland served on the board of directors of the general partner of Oiltanking Partners, L.P. (a publicly traded company providing terminaling, storage and transportation of crude oil, refined petroleum products and LPG) from June 2012 to February 2015 and on the board of directors of KiOR, Inc. (a publicly traded renewables fuel company) from June 2013 to March 2015.

Mr. Leland brings extensive operational and financial experience in the midstream energy industry, having served as president of El Paso Corporation’s (El Paso) midstream business unit from October 2009 to May 2012, and as director of El Paso Pipeline Partners, L.P. from its formation in 2007 to May 2012. Among other senior-level roles at El Paso, Mr. Leland also previously served as executive vice president and chief financial officer of El Paso from August 2005 to October 2009. This experience as well as experience on the boards of numerous publicly traded energy and private companies provide significant contributions to the board.