Oasis Midstream Partners LP (the Partnership or OMP) announced the appointment of Harry N. Pefanis to the Board of Directors of OMP's general partner, where he will also serve as a member of both the Audit and Conflicts Committees. Mr. Pefanis will serve as an independent director, and his appointment brings the total number of directors to seven. Mr. Pefanis, who currently serves as President and Chief Commercial Officer with Plains GP Holdings LP, brings over 35 years of energy experience having worked in various roles at Plains and its predecessors since 1983. Prior to working at Plains, Mr. Pefanis served as auditor for the national accounting firm Price Waterhouse & Co.