SemGroup Corporation to Begin Trading on the New York Stock Exchange

TULSA, Okla.--()--SemGroup® Corporation announced today that shares of its Class A common stock are expected to begin trading on the New York Stock Exchange (NYSE) on November 11, 2010. Class A common stock shares will trade under the symbol SEMG. This listing completes the registration process with the Securities and Exchange Commission commenced by SemGroup earlier this year.

“It has been our goal to be listed on a major exchange before the end of the year, and we are delighted to begin trading on the NYSE this week,” said President and Chief Executive Officer Norman Szydlowski. “We are excited to expand our shareholder base and for the opportunity to increase shareholder value through this listing on the NYSE, the world’s largest equity market.”

Prior to listing on the NYSE, SemGroup Class A shares have been trading over the counter under the ticker SEMX. SemGroup currently has approximately 41 million shares outstanding. SemGroup expects to list its approximately 1.8 million of currently outstanding warrants on an exchange in the future.

About SemGroup

Based in Tulsa, Okla., SemGroup® Corporation 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, terminalling and storing energy.

SemGroup® is a registered trademark of SemGroup Corporation.

Contacts

SemGroup Corporation
Jennifer Gordon, 918-524-8081
investor.relations@semgroupcorp.com

Contacts

SemGroup Corporation
Jennifer Gordon, 918-524-8081
investor.relations@semgroupcorp.com