Trinseo Shareholders Elect Henri Steinmetz to its Board of Directors

BERWYN, Pa.–(BUSINESS WIRE)–$TSE—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.

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.

Contacts

Press contact:
Trinseo
Donna St.Germain, +1-610-240-3307
[email protected]
or
Investor
Contact:
Trinseo
David Stasse, +1 610-240-3207
[email protected]