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SemGroup Corporation, based in Oklahoma, is a midstream company that gathers, transports and markets crude oil and natural gas.
Founded in 2000 and based in Oklahoma, US, SemGroup Corporation gathers, transports, stores and markets crude oil, refined products, natural gas liquids and natural gas in the U.S. and Canada. The company filed for chapter 11 bankruptcy in 2008, emerged in 2009 and began trading on the NYSE. Its recorded stage is Series D.
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