Plains All American Pipeline, L.P. (NYSE: PAA) is a publicly traded master limited partnership that owns and operates midstream energy infrastructure and provides logistics services for crude oil, natural gas liquids, 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.

Plains GP Holdings (NYSE: PAGP) is a publicly traded entity that owns a non-economic controlling interest in the general partner of PAA and an indirect 14% limited partner interest in PAA, one of the largest energy infrastructure and logistics companies in North America.

Both companies are headquartered in Houston, Texas.