SemGroup Corporation Texas Gas Plant Fire

TULSA, Okla.-May 29, 2015-At approximately 10:30 AM CT, SemGroup Corporation (NYSE: SEMG) was informed of an explosion resulting in a fire at our SemGas natural gas processing plant located in Sherman, Texas. We have requested assistance from local emergency officials who have evacuated a 1- mile radius around our facility to insure the safety of everyone nearby. We can confirm that all employees and contractors have been accounted for and there are no known injuries. The cause of the incident is still under investigation.

We will continue to work with local emergency personnel as they fully assess the incident and provide the most accurate information updates on our website, www.semgroupcorp.com, as they are made available.

About SemGroup

Based in Tulsa, OK, SemGroup® Corporation (NYSE:SEMG) is a publicly traded midstream service company providing the energy industry the means to move products from the wellhead to the wholesale marketplace. SemGroup provides diversified services for end-users and consumers of crude oil, natural gas, natural gas liquids, refined products and asphalt. Services include purchasing, selling, processing, transporting, terminaling and storing energy.
Contacts:
Investor Relations: Alisa Perkins
918-524-7711 roserockir@rrmidstream.com
Kiley Roberson
Media Relations
918-704-2936 kroberson@semgroupcorp.com

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