APPLICATIONS Cesa Fiber Additives for flame retardancy are recommended for spun-dyed PP, PET and PA fibers used in applications such as automotive textiles, home and office furnishings, clothing, and carpeting. KEY BENEFITS • Very good compatibility and dispersibility • Durable fire resistance with limited to no impact on color • Fire resistance and spinnability tested for efficacy in our labs • Can be combined with colors and with other additives (e.g., light stabilizers) into a single product for convenience PRODUCT BULLETIN Copyright © 2022, Avient Corporation.

KEY CHARACTERISTICS • Patented next-gen formulation that can preserve visual clarity and aesthetics in applications using recycled content • Reduces bacterial, mold, and fungal growth on the surface and through the thickness of the plastic part • Helps reduce odor, staining, discoloration, and loss of mechanical properties • Available for various processes including extrusion, injection molding, blow molding, rotational molding, and thermoforming MARKETS & APPLICATIONS These antimicrobial additives are well-suited for clear polycarbonate or plexiglass applications using recycled resin including: • Electronics • Packaging • Consumer goods • Protective shields and sneeze guards • Plexiglass windows or panels • Clear phone or tablet cases • Modular office construction • Point-of-purchase screens • Touchscreen information kiosks • Transportation infotainment screens 1.844.4AVIENT www.avient.com Copyright © 2025, Avient Corporation.

The Clayton Act prohibits: • Some tying arrangements, exclusive dealing and requirements contracts • Some mergers and acquisitions among competing firms which would unlawfully harm competition • An individual serving as a director or officer of competing corporations 3. Your supervisor or any Avient manager • The Corporate Ethics Officer via email at ethics.officer@avient.com • Avient’s General Counsel via email at legal.officer@avient.com • Any member of the Legal department • The Avient Ethics Hotline Avient Ethics Hotline The Ethics Hotline is available globally in over 20 languages, 24 hours a day, 7 days a week, by phone and through a website. An independent company receives all website and phone reports received by the Ethics Hotline and reports the information to the Corporate Ethics Officer.

Newlin, Chairman, President and Chief Executive Officer. Executive Vice President and Chief Financial Officer, Bradley C. Company Officers

NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Registration Details for 2023 Sustainability Day CLEVELAND – August 28, 2023 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable material solutions, has announced registration details for a virtual Sustainability Day for investment professionals on Wednesday, September 20, 2023, from 9 a.m. – 11 a.m. Beggs, Senior Vice President and Chief Financial Officer, Avient Corporation. https://www.avient.com/investors https://sustainabilityday2023.avient.com/ https://www.avient.com/investors https://register.vevent.com/register/BI0b9400e410674b9d9dc80471579b64b9 https://www.avient.com/investors/events-presentations About Avient Avient Corporation (NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world.

PolyOne Corporation Chairman, President and Chief Executive Officer, PolyOne Corporation

KEY CHARACTERISTICS • Derived from recycled content including end-of-life tires • Available for multiple resins and custom solutions • Retains performance characteristics of traditional carbon black in plastics • Passes REACH and RoHS requirements • Prop 65 letters available • Certified by TÜV Rheinland • PCF calculation available on request MARKET AND APPLICATIONS OnColor REC Polymer Colorants are sustainable solutions across a wide variety of industries and applications, including: • Automotive • Wire and cable • Building and construction • Appliances • Electrical and electronics • Industrial molding applications • Office furniture 1.844.4AVIENT www.avient.com Copyright © 2024, Avient Corporation.

KEY CHARACTERISTICS • Derived from end-of-life tires • Available for multiple resins and custom solutions • Retains performance characteristics of traditional carbon black in plastics • Enhances sustainable product offerings • Provides long-term price stability • Passes REACH and RoHS requirements • Prop 65 letters available MARKET AND APPLICATIONS OnColor RC Environmental Black is a sustainable solution across a wide variety of industries and applications, including: • Automotive • Wire and cable • Building and construction • Appliances • Electrical and electronics • Industrial molding applications • Office furniture Avient OnColor RC Environmental Black is offered for multiple resins and also for custom solutions: CC10289240WE OnColor RC Environmental Black PE CC10284887WE OnColor RC Environmental Black TPU CC10287020WE OnColor RC Environmental Black PC CC10287026WE OnColor RC Environmental Black PS CC10287028WE OnColor RC Environmental Black PP CC10287033WE OnColor RC Environmental Black ABS www.avient.com Copyright © 2020, Avient Corporation.

Patterson, president and chief executive officer. PolyOne Corporation Company Officers

PolyOne Corporation 3 FACTORS THAT COULD CAUSE ACTUAL RESULTS TO DIFFER MATERIALLY FROM THOSE IMPLIED BY THESE FORWARD-LOOKING STATEMENTS INCLUDE, BUT ARE NOT LIMITED TO: U S E O F N O N - G A A P M E A S U R E S PolyOne Corporation 4 • This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. Richardson Executive Vice President & Chief Financial Officer Donald Wiseman Senior Vice President, President of Performance Products & Solutions Joel Rathbun Senior Vice President, Mergers & Acquisitions John Midea Senior Vice President, Global Operations & Process Improvement Scott Horn Senior Vice President, President of PolyOne Distribution Kurt Schuering Vice President Global Key Account Management Michael A. Garratt Senior Vice President & Chief Commercial Officer João José San Martin Neto Senior Vice President and Chief Human Resources Officer Cathy Dodd Vice President Marketing Mark Crist Senior Vice President, President of Color, Additives & Inks Lisa Kunkle Senior Vice President, General Counsel & Secretary Chris Murphy Vice President, Research & Development, Chief Innovation Officer T H E L E A D E R S B E H I N D T H E T E A M PolyOne Corporation 6 Robert M.