Notes: Dec. 16, 2019-- Hess Midstream Partners LP (NYSE: HESM) (the “Company” or “HESM”) today announced that the Company has completed its previously announced acquisition of Hess Infrastructure Partners LP (“HIP”), IDR simplification and conversion from a master limited partnership into an “Up-C” structure by merging with Hess Midstream LP (“Hess Midstream”), an entity taxed as a corporation for U.S. federal income tax purposes. At the effective time of the transaction, each HESM common unit held by Hess Midstream Partners LP public unitholders converted on a one-for-one basis into a newly issued Class A share representing a limited partner interest in Hess Midstream. Based on the number of HESM common units held by Hess Midstream Partners LP public unitholders, Hess Midstream issued approximately 17 million Class A shares to HESM public unitholders. As part of the transaction, Hess Midstream Partners LP changed its name to “Hess Midstream Operations LP” and will continue as a consolidated subsidiary of Hess Midstream, the new publicly listed entity. Hess Midstream Partners LP common units ceased trading on the New York Stock Exchange (“NYSE”) effective after the market close today and the Class A shares will begin trading on the NYSE under the ticker symbol “HESM” at the opening of the market on December 17, 2019.