Carlin G. Conner has served as a director and as President and Chief Executive Officer of SemGroup since
April 2014. Mr. Conner also serves as chairman of the board of directors, president and chief executive officer of
our wholly owned subsidiary, Rose Rock Midstream GP, LLC, the general partner of Rose Rock Midstream, L.P.
From 2012 until March 2014, Mr. Conner served as managing director of Oiltanking GmbH, an independent
worldwide storage provider of crude oil, refined petroleum products, liquid chemicals and gases. He served as a
member of the board of directors of the general partner of Oiltanking Partners, L.P., a publicly traded master limited
partnership engaged in independent terminaling, storage and transportation of crude oil, refined petroleum products
and liquefied petroleum gas (“Oiltanking Partners”), from March 2011 until March 2014, and was elected chairman
in July 2011 in connection with the completion of Oiltanking Partners’ initial public offering. Mr. Conner also
served as president and chief executive officer of Oiltanking Partner’s general partner from 2011 to 2012 and as
president and chief executive officer of Oiltanking Holding Americas, Inc., a wholly owned subsidiary of Oiltanking
GmbH from 2006 to 2012. Previously, from 2003 to 2006, he worked at Oiltanking GmbH’s corporate headquarters
in Hamburg, Germany, where he was responsible for international business development and sat on the boards of
several Oiltanking GmbH ventures. He joined Oiltanking Houston, L.P. in 2000. He began his career at GATX
Terminals Corporation and served in various roles, including operations and commercial management. He graduated
from McNeese State University with a Bachelor of Science degree in environmental science.