Trinseo Elects Beach Lin and Tomkins to its Board of Directors

Trinseo (NYSE: TSE), a global materials company and manufacturer of plastics, latex binders and synthetic rubber, today announced Sandra Beach Lin and Mark Tomkins have been elected to its Board of Directors, effective November 20, 2019.

Sandra Beach Lin has served as President and Chief Executive Officer of Calisolar, Inc., a manufacturer of solar silicon and multicrystalline solar cells from 2010 to 2011. Previously, she was Executive Vice President, then Corporate Executive Vice President, at Celanese Corporation, a global technology and specialty materials company, from 2007 to 2010. Ms. Beach Lin joined Avery Dennison Corporation, a global leader in pressure-sensitive adhesives technology as Group Vice President from 2005 to 2007. Prior to joining Avery Dennison, from 2002 to 2005, she was President of Alcoa Closure Systems International, a division of Alcoa Incorporated, a global aluminum leader. From 1994 to 2001, Ms. Beach Lin held various executive positions at Honeywell International.

Ms. Beach Lin has served on the board of directors of American Electric Power (NYSE: AEP) since 2012, Interface Biologics since 2012, and PolyOne Corporation (NYSE: POL) since 2013. She has also served as a director of WESCO Internationals from 2002 to 2019. Ms. Beach Lin graduated with a Bachelor of Business Administration Degree in General Management from the University of Toledo and has an MBA in Marketing and Policy and Control from the University of Michigan.

Mark Tomkins has served as Senior Vice President and Chief Financial Officer of Innovene from 2005 to 2006, at the time a leading petrochemical and polymers company. He was Senior Vice President, Chief Financial Officer, and Treasurer of Vulcan Materials, a building materials company, from 2001 to 2005. Previously he worked at Great Lakes Chemical Corp., a chemical research, production, sales and distribution company as Senior Vice President and Chief Financial Officer from 1998 to 2001. Prior to Great Lakes Chemical, Mr. Tomkins was Vice President Finance and Business Development for Polymers and Vice President Finance and Business Development for Electronic Materials at Honeywell International.

Mr. Tomkins has served on the board of directors of ServiceMaster (NYSE: SERV) since 2015 and WR Grace & Co (NYSE: GRA) since 2006. He has also served as a director of Klockner Pentaplast, Elevance Renewable Sciences, and CVR Energy (NYSE: CVI). Mr. Tomkins received an MBA and a Bachelor of Science Degree in Finance and Quantitative Management from Eastern Illinois University. He is also a certified public accountant.

"Trinseo continues to expand the diversity of global operational experience and executive management skills of its Board of Directors,” said Frank Bozich, Trinseo President and Chief Executive Officer. "Sandra has extensive senior executive experience in multiple industries bringing a strong operational foundation and wide-ranging international and governance experience to our board of directors. Mark brings years of financial, accounting, and management expertise, along with his experience on other public and private company boards.”

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, appliances, consumer electronics, medical devices, electrical, building and construction, textile, paper and board, and tires. Trinseo had approximately $4.6 billion in net sales in 2018, with 16 manufacturing sites around the world, and approximately 2,500 employees. For more information visit www.trinseo.com

Note on Forward-Looking Statements

This press release may contain "forward-looking statements” within the meaning of the safe harbor provisions of the United States Private Securities Litigation Reform Act of 1995. Words such as "expect,” "estimate,” "project,” "budget,” "forecast,” "anticipate,” "intend,” "plan,” "may,” "will,” "could,” "should,” "believes,” "predicts,” "potential,” "continue,” and similar expressions are intended to identify such forward-looking statements. Forward-looking statements in this press release may include, without limitation, forecasts of growth, revenues, business activity, acquisitions, financings and other matters that involve known and unknown risks, uncertainties and other factors that may cause results, levels of activity, performance or achievements to differ materially from results expressed or implied by this press release. As a result of the foregoing considerations, you are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this press release. The Company undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

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