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Officers and Directors
Board of Directors
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Board of Directors
John F. Chlebowski
Chairman, SemGroup Board of Directors
Ronald A. Ballschmiede
SemGroup Board of Directors
Sarah M. Barpoulis
SemGroup Board of Directors
Stanley C. Horton
SemGroup Board of Directors
Karl F. Kurz
SemGroup Board of Directors
Thomas R. McDaniel
SemGroup Board of Directors
Norman J. Szydlowski
President and Chief Executive Officer