Overview Trinseo is a different kind of global materials company - at the intersection of people, technology, and customers. We are a world leader in the production of plastics and latex binders. Our culture is built on passion and innovation. A career at Trinseo presents a unique opportunity to work in a highly collaborative environment. Helping customers solve their most complex material challenges is the reason we come to work each day. We are seeking innovative thinkers - ready to tackle any challenge and passionate about delivering value. As a global materials solutions provider focused on delivering innovative and sustainable solutions to our customers, we need people to feel respected and included so they can be more creative, innovative, and successful. We strive to create workplaces that reflect all communities and customers we serve and where everyone feels empowered to bring their full, authentic selves to work. That's why we're fully committed to inclusion across race, gender, age, religion, identity, and experience to drive us forward every day. Overview (Scope of Role) The PM Production Supervisor reports directly to the Production Leader. Direct reports include 5-8 hourly operators. Responsible for all functions of personnel and operations management related to day-to-day staffing and production issues at the Bristol Plant. Responsibilities Operations and Safety Support Ensure safe operations and that all safety policies/ practices are followed by operations personnel. Support full compliance of all safety related regulatory requirements including: OSHA, PSM, RMP, VPP and Company policies and programs. Ensure timely completion of investigations and completion of actions generated from EHS programs. Support full environmental compliance and optimal environmental performance; ensure that all best practices are followed by Operations personnel. Direct supervision of production employees; motivates workforce for high productivity. Ensure procedures are updated and followed. Responsible for efficient use of the work force, including the scheduling of OT as needed to ensure adequate staffing and to control costs. Ensures employees attend required Safety meetings and remain up to date on training requirements. Maximize operational efficiencies by ensuring production units are run at optimum operating conditions. Minimize unit downtime by defining priorities with maintenance; assist in cost reduction by ensuring good coordination between maintenance and operations. Propose/implement improvements to drive unit continuous improvements. Participate and support implementation of all projects that involve the unit operations. Abides by terms of the collective Bargaining Agreement; properly conducts bidding and polling and responds to grievances; resolving differences with union leadership. Supports BBS process by performing observations and encourages employee participation. Supports bulk truck loading activities and rail movements at the site Performs lockout tagout on equipment in advance of maintenance activities. Write and issue Safe Work Permits for contractors, maintenance staff and others. Ensure provisions of the Safe Work Permit are followed and all work is completed safely. Supports Loss Control policy, ISO 9001 and

OHSAS 18001

management systems. Provide initial onsite Emergency Response leadership during any incidents at the facility. Qualifications Minimum of 5+ years experience in manufacturing plant Prior production supervisory experience Chemical manufacturing experience preferred Excellent verbal and written communication skills Strong knowledge of MS Office SAP experience preferred Equity and Inclusion With our expanding global presence, cross-cultural insight and competence are essential for our ongoing success. We believe that a diverse workforce contributes different perspectives, experiences, and creative ideas that enable us to continue to improve every day. Race, gender, ethnicity, country of origin, age, personal style, sexual orientation, physical ability, religion, work and life experiences and many more factors contribute to this diversity. We welcome all applicants, regardless of their backgrounds, and are committed to a fair and inclusive hiring process.