SemGroup Corporation And Rose Rock Midstream, L.P. Announce Timing Of First Quarter 2013 Earnings Conference Call And Webcast

TULSA, Okla., April 10, 2013 (GLOBE NEWSWIRE) -- SemGroup ® Corporation (NYSE:SEMG) and Rose Rock Midstream, L.P. (NYSE:RRMS) today announced plans to release first quarter 2013 results after market closes on Wednesday, May 8, 2013.
SemGroup Corporation logo
Rose Rock Midstream, L.P.

A joint conference call for investors will be held at 11 AM Eastern on Thursday, May 9, 2013 to discuss first quarter results for both SemGroup and Rose Rock Midstream. Hosting the call will be Norm Szydlowski, 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 and Rose Rock Midstream's Investor Relations website at
What: SemGroup Corporation and Rose Rock Midstream first quarter 2013 earnings conference call and webcast
When: 11:00 AM Eastern, May 9, 2013
Where: 1) Phone conference call 
  ·  U.S. callers - 877.359.3652, pass code 34090290 
  ·  International callers - 720.545.0014, pass code 34090290
  2) Log on to the webcast at
  3) Log on to the webcast at

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 (NYSE: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. (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.

SemGroup ® is a registered trademark of SemGroup Corporation.
CONTACT: Investor Relations:         Mary Catherine Ward         SemGroup - 918-524-8081         Rose Rock Midstream - 918-524-7711                  Media:         Kiley Roberson         918-524-8594

SemGroup Corporation logo

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