Rose Rock Midstream, L.P. (NYSE:RRMS) will present at the Barclays Capital CEO Energy-Power Conference at the Sheraton New York Hotel & Towers in New York City. Norm Szydlowski, chief executive officer, will offer an overview presentation of the company’s business, commencing at approximately 2:25 p.m. Eastern Time on Thursday, September 6, 2012. A live webcast of the presentation along with materials used during the conference will be accessible on the Rose Rock Midstream website at www.rrmidstream.com on Thursday, September 6, 2012. Norm Szydlowski and Bob Fitzgerald, Rose Rock Midstream chief financial officer, will also conduct meetings with members of the investment community on Wednesday, September 5 and Thursday, September 6. About Rose Rock Midstream Rose Rock Midstream, L.P. (NYSE: RRMS) is a growth-oriented Delaware limited partnership recently 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 different states with the majority of its assets strategically located in or connected to the Cushing, Oklahoma crude oil marketing hub.