Board of Directors

Ms. Johnson became a director of our company in March 2017. Ms. Johnson served as Chairwoman of Elevance Renewable Sciences Inc., from 2015 to 2016 following eight years as President and Chief Executive Officer. Prior to joining Elevance, Ms. Johnson spent over twenty years in the oil and petrochemical industry with Amoco Corporation and BP p.l.c. (joining BP after its merger with Amoco in 1998). During this time, she held both operational and functional roles, culminating in her role as Senior Vice President of Global Derivatives within BP’s Innovene business, which included P&L accountability for multiple global commodity and specialty chemicals businesses. Ms. Johnson has served on the board of directors for FMC Corporation (NYSE: FMC) since 2013. She received an MOB degree in Management and Organizational Behavior, and a B.S. degree in Psychology, both from Brigham Young University. Ms. Johnson brings to our board valuable experience in operational leadership and chemical industry expertise.

Mr. Alvarado became a director of our company in March 2017. Mr. Alvarado served as Chief Executive Officer of Commercial Metals Company (NYSE: CMC), a global manufacturer, recycler and marketer of steel and other metals, from September 2011 until September 2017, and as Chairman of CMC's board of directors from January 2017 until January 2018. He joined CMC in April 2010 as Executive Vice President and Chief Operating Officer, was named President and Chief Operating Officer in April 2011, and became President and Chief Executive Officer in September 2011. In January 2017, he passed his President title to his Chief Operating Officer. Prior to joining CMC, he was President and Chief Operating Officer of Lone Star Technologies, Inc. from 2004 to 2007. In June 2007, following the acquisition of Lone Star Technologies, Inc. by United States Steel Corporation, Mr. Alvarado was named President of U.S. Steel Tubular Products, Inc., a division of United States Steel Corporation, a position he held until March 2009. Mr. Alvarado began his career at Inland Steel Company in 1976 and spent 21 years with the company in roles of increasing responsibility. He then served in executive roles with Birmingham Steel Corporation and Ispat North America Inc. until joining Lone Star Technologies. Mr. Alvarado also serves as a director of Kennametal Inc. (NYSE: KMT) since January 2018 and previously served as a director of Spectra Energy Corp (NYSE: SE) from 2011 until February 2017. He received an MBA from Cornell University and B.A. degree in economics from the University of Notre Dame. Mr. Alvarado brings years of experience in a cyclical commodities-driven industry and significant perspective on global operations and strategic planning.

Bozich joined Trinseo on March 4, 2019. In his role as Trinseo's President and CEO, he leads the company in delivering innovative and sustainable solutions to help our customers create products that are intrinsic to how we live our lives — across a wide range of end-markets, including automotive, consumer electronics, appliances, medical devices, electrical, carpet, paper and board, and building and construction.

Bozich was elected to Trinseo’s Board of Directors in July, 2019.

Victoria Brifo became a director of our Company in May 2021. Ms. Brifo is Senior Vice President and Chief Human Resources Officer at Air Products and Chemicals, Inc. (“Air Products”), where she is responsible for leading all aspects of the company's Human Resources organization, including HR Operations, Diversity and Inclusion, Talent Management, and Compensation and Benefits, as well as Global Health and Wellness, and Corporate Aviation and Corporate Transportation. Ms. Brifo has been with Air Products since 2001, starting as a production site leader and progressing through several plant leadership positions before becoming Global Diversity Director in 2005. In 2008 she was named Global Manager of Electronics Operations and moved to the Merchant Gases group in 2011 to lead the Global Generated Gases business. In 2014 Ms. Brifo assumed the role of Global Transformation Leader for Industrial Gases. She was subsequently appointed Vice President, Global Gases, followed by Vice President, Equipment Sales, Plant Support and Central Procurement. Prior to joining Air Products, Ms. Brifo worked at LyondellBasell and Amoco Production Company. She holds degrees in chemical engineering and political science from the Massachusetts Institute of Technology. Ms. Brifo brings significant experience in the chemicals and manufacturing industry, as well as leadership, management and human resources expertise to our board of directors.

Mr. Cote became a director of our Company in May 2014. Mr. Cote is the President and Chief Executive Officer of Sensata Technologies Holding N. V. (NYSE: ST) since March, 2020. In January, 2019 he was appointed President of Sensata, prior to which he has served as Executive Vice President of its Global Sensing Solutions business since November, 2015. He joined Sensata as Senior Vice President and Chief Financial Officer in January, 2007 and was appointed Executive Vice President in July, 2007. From March 2005 to December 2006, Mr. Cote was Chief Operating Officer of the law firm Ropes & Gray. From January 2000 to March 2005, Mr. Cote was Chief Operating, Financial and Administrative Officer of Digitas. Previously he worked for Ernst & Young LLP from 1989 until 1997. Mr. Cote is a Certified Public Accountant. Mr. Cote brings significant management, capital markets and accounting experience to our Board.

Mr. De Leener became a director of our Company in May 2014. Mr. De Leener served as interim CEO of Braas Monier Building Group SA from January 2016 to November 2016 and as Chairman of its Board of Directors from June 2014 to March 2017. Prior to that, he served as Executive Vice President for PPG Industries, Inc. from July 2010 until December 2012. From June 2008 until August 2011, Mr. De Leener also served as President of PPG Europe S.A. Mr. De Leener previously served as Chief Executive Officer of SigmaKalon Group from 1998 until January 2008. Mr. De Leener received a B.S. degree in Economics and Philosophy and a Master of Chemical Engineering degree from Catholic University of Louvain, Belgium. Mr. De Leener brings valuable management and chemical industry experience to our Board.

Jeanmarie Desmond became a director of our Company on October 1, 2020. Ms. Desmond is the former Executive Vice President and Chief Financial Officer of DuPont de Nemours, Inc. (“DuPont”) and has previously served as Vice President and Co-Controller for DowDuPont and as finance leader for the Specialty Products division following the merger of DuPont with Dow Chemical. Ms. Desmond served in various leadership roles within DuPont in her 30-year career with the company. She also serves on the board and is treasurer of Delaware Prosperity Partnership, a public-private partnership overseeing economic development in Delaware. Ms. Desmond earned a B.S. in Accounting from Mt. St. Mary’s University and is a certified public accountant (inactive). Ms. Desmond brings substantial finance and accounting experience and extensive experience in the chemicals industry to the board of directors.

Matthew Farrell became a director of our Company on November 1, 2020. Mr. Farrell is the Chairman, President and Chief Executive Officer of Church & Dwight Co. Inc. (“Church & Dwight”), serving since 2016 and as Chairman since 2019. Mr. Farrell served as Executive Vice President, Chief Financial Officer and Chief Operating Officer at Church & Dwight since 2014, and as Chief Financial Officer since 2006. Prior to that, Mr. Farrell served as Chief Financial Officer of Alpharma Inc., as Vice President, Investor Relations & Communications at Ingersoll-Rand Ltd., and in various senior financial positions at AlliedSignal Inc. Mr. Farrell began his career with KPMG Peat Marwick LLP, where he was an audit partner. Mr. Farrell has served on the board of Lydall Co., Inc. (NYSE: LDL) since 2003. Mr. Farrell received a B.S. degree from Manhattan College and is a certified public accountant (inactive). Mr. Farrell brings to the board of directors his experience as a chief executive officer, substantial financial and audit expertise and experience in the chemicals, industrial goods and consumer products industries.

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.

Mr. Martens became a director of our Company in September 2016. From February 2011 to April 2015, Mr. Martens served as President and Chief Executive Officer of Novelis, Inc., a leader in aluminum rolled products and can recycling with worldwide operations. He joined Novelis as President and Chief Operating Officer in April 2009. Prior to his employment with Novelis, Mr. Martens served as Senior Vice President of light vehicle systems for ArvinMeritor Inc., a distributor for engine and transmission parts and President and Chief Executive Officer designate of Arvin Innovation, a leading global provider of dynamic motion and control automotive systems. From 1987 to 2005, Mr. Martens held various product development and engineering roles at Ford Motor Company, including his most recent role as a group vice president of product creation from 2003 to 2005. Mr. Martens serves as Chairman of the Board of Graphic Packaging Holding Company (NYSE: GPK), a leading provider of packaging solutions for a wide variety of products to food, beverage and other consumer products companies, where he has been director since November 2013. Additionally, Mr. Martens served as a director at Plexus Corporation (NASDAQ: PLXS) from August 2010 until February 2017. Mr. Martens has an MBA from University of Michigan and received his B.S. degree in mechanical engineering from Virginia Polytechnic Institute. Mr. Martens brings to the board of directors significant leadership and management experience in global manufacturing operations, along with innovation expertise.

Donald T. Misheff has been a director of our Company since February 2015. Mr. Misheff served as managing partner from 2003 until his retirement in 2011 of the Northeast Ohio offices of Ernst & Young LLP, a public accounting firm. As the managing partner of the Northeast Ohio offices of Ernst & Young LLP, Mr. Misheff advised many of the region’s largest companies on financial and corporate governance issues. He began his career with Ernst & Young LLP in 1978 as part of the audit staff and later joined the tax practice, specializing in accounting/financial reporting for income taxes, purchase accounting, and mergers and acquisitions. He has more than 30 years of experience performing, reviewing, and overseeing the audits of financial statements of a wide range of public companies. He currently serves as a director of two other public companies: TimkenSteel Corporation (NYSE: TMST) and First Energy Corp. (NYSE: FE). Mr. Misheff graduated from the University of Akron with a B.S. degree in Accounting. Mr. Misheff brings extensive financial, accounting and public company corporate governance experience to our Board.

Mr. Steinmetz became a director of our Company in November 2017. Since 2016, Mr. Steinmetz has served as Chief Executive Officer of the Ceramtec Group, a global supplier of advanced ceramics. From 2009 to 2016, Mr. Steinmetz 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., Mr. Steinmetz 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 Fontainebleau, France. Mr. Steinmetz brings to the board of directors significant global chief executive officer experience and decades of chemical industry experience.

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.