SemGroup Corporation

SemGroup in its $5 billion acquisition by Energy Transfer LP


SemGroup Corporation


$5 billion


Mergers and Acquisitions

Date Closed

December 2019



Lead Office



On September 16, 2019, SemGroup Corporation announced its $5 billion merger with Energy Transfer LP. Energy Transfer’s acquisition of SemGroup will increase its scale across multiple regions and provide increased connectivity for Energy Transfer’s crude oil and NGL transportation businesses. This acquisition also expands Energy Transfer’s crude oil and NGL infrastructure by adding crude oil gathering assets in the DJ Basin in Colorado and the Anadarko Basin in Oklahoma and Kansas, as well as crude oil and natural gas liquids pipelines connecting the DJ Basin and Anadarko Basin with crude oil terminals in Cushing, Oklahoma.

SemGroup Corporation, headquartered in Tulsa, Oklahoma, moves energy across North America through a network of pipelines, processing plants, refinery-connected storage facilities and deep-water marine terminals with import and export capabilities. SemGroup serves as a versatile connection between upstream oil and gas producers and downstream refiners and end users. Key areas of operation and growth include western Canada, the Mid-Continent and the Gulf Coast.

Osler, Hoskin & Harcourt LLP acted as Canadian counsel to SemGroup and SemCAMS with a team consisting of Craig Spurn, Andrea Whyte, and Carson Wetter (Corporate), Peter Glossop and Jaime Auron (Competition/Antitrust & Foreign Investment) and Justin Fontaine (Regulatory, Environmental, Aboriginal and Land).