Trinseo—Martin Pugh, senior vice president and business president for Performance Materials, has been named executive vice president, in addition to the new role of chief operating officer. He will be succeeded by Hayati Yarka-das, who was most recently senior vice president and general manager, Europe, at Tate & Lyle. Tim Stedman will join Trinseo as senior vice president and business president, Basic Plastics and Feedstocks. He was previously business director for Basic Chemicals at ExxonMobil Chemical.
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