Plains All American Pipeline (PAA) 8-K Plains All American Pipeline, L.P. and Plains GP Holdings Report Director Changes

Exhibit 99.1

FOR IMMEDIATE RELEASE

Plains All American Pipeline, L.P. and Plains GP Holdings Report Director Changes

(Houston — February 21, 2017) Plains All American Pipeline, L.P. (NYSE: PAA) and Plains GP Holdings (NYSE: PAGP) today announced that the Board of Directors of PAA GP Holdings LLC  (“PAGP GP”) appointed Harry Pefanis and Willie Chiang to the Board.  Mr. Pefanis and Mr. Chiang serve as the President and Chief Operating Officer and Executive Vice President and Chief Operating Officer (U.S.), respectively, of PAGP GP.

Plains All American Pipeline, L.P. is a publicly traded master limited partnership that owns and operates midstream energy infrastructure and provides logistics services for crude oil, NGLs, natural gas and refined products. PAA owns an extensive network of pipeline transportation, terminalling, storage and gathering assets in key crude oil and NGL producing basins and transportation corridors and at major market hubs in the United States and Canada. On average, PAA handles over 4.6 million barrels per day of crude oil and NGL in its Transportation segment. PAA is headquartered in Houston, Texas.  More information is available at www.plainsallamerican.com.

Plains GP Holdings is a publicly traded entity that owns an indirect, non-economic controlling general partner interest in PAA and an indirect limited partner interest in PAA, one of the largest energy infrastructure and logistics companies in North America. PAGP is headquartered in Houston, Texas. More information is available at www.plainsallamerican.com.

Contacts:

Ryan Smith

Director, Investor Relations

(866) 809-1291