SemGroup Corporation and Rose Rock Midstream, L.P. Announce Timing of Second Quarter 2015 Earnings Conference Call and Webcast

TULSA, Okla., July 2, 2015 (GLOBE NEWSWIRE) -- SemGroup^® Corporation SEMG and Rose Rock Midstream^®, L.P. RRMS today announced plans to release second quarter 2015 results after the market closes on Thursday, August 6, 2015.

A joint conference call for investors will be held at 11 AM Eastern on Friday, August 7, 2015 to discuss second quarter results for both SemGroup and Rose Rock Midstream. Hosting the call will be Carlin Conner, president and chief executive officer, and Bob Fitzgerald, senior vice president and chief financial officer. A presentation of the results will be posted before the conference call on SemGroup's Investor Relations website at ir.semgroupcorp.com and Rose Rock Midstream's Investor Relations website at ir.rrmidstream.com.

If you are unable to participate in the conference call or webcast, a replay will be available on both websites for a year following the call on the Calendar of Events-Past Events page.

About SemGroup

Based in Tulsa, OK, SemGroup^® Corporation 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, 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.