Rose Rock Midstream to Present at Upcoming Conferences

Rose Rock Midstream to Present at Upcoming Conferences

TULSA, Okla., March 26, 2013 (GLOBE NEWSWIRE) -- Rose Rock Midstream, L.P.
(NYSE:RRMS) will present at the Tulsa Master Limited Partnership Investor
Conference at the University of Oklahoma Tulsa Schusterman Learning Center in
Tulsa, Oklahoma on Thursday, March 28, 2013, as well as the Barclays Master
Limited Partnership Forum in New York City on Tuesday, April 2, 2013.

Rose Rock Midstream Chief Executive Officer Norm Szydlowski will offer an
overview presentation of the company's business. The presentation materials
used during the conferences will be accessible on the Rose Rock Midstream
website at on Thursday, March 28 and Tuesday, April 2.

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. Rose
Rock Midstream provides crude oil gathering, transportation, storage and
marketing services. Headquartered in Tulsa, OK, Rose Rock Midstream has
operations in six states with the majority of its assets strategically located
in or connected to the Cushing, Oklahoma crude oil marketing hub.

CONTACT: Investor Relations:
         Mary Catherine Ward
         Kiley Roberson

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