SemGroup Corporation and Rose Rock Midstream to Participate in the US Capital Midstream Corporate Access Day

TULSA, Okla., Jan. 23, 2015 (GLOBE NEWSWIRE) -- SemGroup^® Corporation (NYSE: SEMG) and Rose Rock Midstream^®, L.P. (NYSE: RRMS) will attend the US Capital Midstream Corporate Access Day in Houston, Texas, on Tuesday, January 27, 2015.

SemGroup and Rose Rock Midstream Chief Executive Officer, Carlin Conner and Chief Financial Officer, Bob Fitzgerald will conduct one-on-one meetings with members of the investment community. The presentation materials used during the conferences will be accessible on the SemGroup website at www.semgroupcorp.com and the Rose Rock Midstream website at www.rrmidstream.com on Tuesday, January 27.

About SemGroup

Based in Tulsa, Oklahoma, 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.

About Rose Rock Midstream

Rose Rock Midstream^®, L.P. (NYSE: RRMS) is a growth-oriented Delaware limited partnership formed by SemGroup^® Corporation (NYSE: SEMG) to own, operate, develop and acquire a diversified portfolio of midstream energy assets. Headquartered in Tulsa, OK, Rose Rock Midstream provides crude oil gathering, transportation, storage and marketing services with the majority of its assets strategically located in or connected to the Cushing, Oklahoma crude oil marketing hub.