Trinseo Shareholders Elect Henri Steinmetz to its Board of Directors

Trinseo (NYSE: TSE), a global materials company and manufacturer of plastics, latex binders and synthetic rubber, today announced Henri Steinmetz has been elected by its shareholders to the Company’s Board of Directors, effective November 28, 2017.

Mr. Steinmetz has served as Chief Executive Officer of the Ceramtec Group, a global supplier of advanced ceramics since 2016. From 2009 to 2016, he was Executive Director and Chief Executive Officer of Ruetgers N.V., Europe’s leading manufacturer of chemical raw materials made from coal tar. Prior to joining Ruetgers N.V., he was President of Sulzer Metco, a worldwide technology leader in coating materials, from 2004 to 2008, and an Executive Vice President at Great Lakes Chemical Corporation from 2000 to 2004.

Mr. Steinmetz graduated with a Master of Science in Metallurgy from the Technical University Clausthal, Germany and has an MBA from INSEAD.

“Mr. Steinmetz has significant global chief executive officer experience and decades of materials industry experience, which make him well-positioned to provide significant contributions to our Board,” said Chris Pappas, President and CEO, Trinseo.

About Trinseo

Trinseo (NYSE: TSE) is a global materials solutions provider and manufacturer of plastics, latex binders, and synthetic rubber. We are focused on delivering innovative and sustainable solutions to help our customers create products that touch lives every day — products that are intrinsic to how we live our lives — across a wide range of end-markets, including automotive, consumer electronics, appliances, medical devices, lighting, electrical, carpet, paper and board, building and construction, and tires. Trinseo had approximately $3.7 billion in net sales in 2016, with 16 manufacturing sites around the world, and nearly 2,200 employees. For more information visit www.trinseo.com.

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