Lawrence Ziemba was appointed as an independent member of PAA GP Holdings LLC's board, according to a Jan. 8 news release from Plains All American Pipeline LP and Plains GP Holdings LP.
Prior to the appointment, Ziemba served as executive vice president, refining, and a member of the executive committee of Phillips 66 from May 2012 to December 2017.
PAA GP Holdings operates as the general partner of Plains GP Holdings. The company's board is responsible for managing the business and affairs of Plains All American Pipeline and Plains GP Holdings.
Plains GP Holdings owns an indirect, noneconomic controlling general partner interest and an indirect limited partner interest in Plains All American, which owns and operates midstream energy infrastructure and provides logistics services for crude oil, NGLs and natural gas.