The SemGroup Corporation logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=14815About 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 6 different 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: Alisa Perkins SemGroup - 918-524-8081 Rose Rock - 918-524-7711 firstname.lastname@example.org email@example.com Media: Liz Barclay 918-524-8158 firstname.lastname@example.org email@example.com