SemGroup Corporation and Rose Rock Midstream to Participate in the JP Morgan MLP Energy Infrastructure 1x1 Access Day

TULSA, Okla., June 5, 2014 (GLOBE NEWSWIRE) -- SemGroup® Corporation SEMG and Rose Rock Midstream^®, L.P. RRMS will attend the JP Morgan MLP Energy Infrastructure 1x1 Access Day in Chicago, IL, on Thursday, June 12, 2014.

SemGroup and Rose Rock Midstream Chief Financial Officer Bob Fitzgerald will conduct one-on-one meetings with members of the investment community. The presentation materials used during the conference will be accessible on the SemGroup website at www.semgroupcorp.com and the Rose Rock Midstream website at www.rrmidstream.com on Thursday, June 12.

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. RRMS is a growth-oriented Delaware limited partnership formed by SemGroup^® Corporation 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.