Type	Name	Date
Merger agreement	Agreement and Plan of Merger, by and among SemGroup Corporation, Energy Transfer LP and Nautilus Merger Sub LLC	09/16/2019
Acquisition / asset purchase agreement	Purchase and Sale Agreement by and among SemGroup Corporation, Beachhead I LLC, Beachhead II LLC, Buffalo Investor I, LP and Buffalo Investor II, LP	06/06/2017
Merger agreement	Agreement and Plan of Merger, by and among SemGroup Corporation, PBMS, LLC, Rose Rock Midstream, L.P. and Rose Rock Midstream GP, LLC	05/31/2016