Nova Chemicals-Luis Sierra has been appointed president and chief executive, effective 1 Aug. 2020, to succeed Todd Karran, who is retiring. Sierra was most recently chief executive of BP's aromatic chemicals business. Agilyx-Tim Stedman, who has been serving as senior vice president of strategy and corporate development at Trinseo, has been named chief executive, effective 17 Aug. 2020. He will replace Joe Vaillancourt, who will assume the role of president of Cyclyx International, a recently launched affiliate of Agilyx (PCN, 6 July 2020, p 4).
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