AVIENT CORPORATION T H I R D Q U A R T E R 2 0 2 3 R E S U L T S (NYSE: AVNT) N OV E M B E R 2 , 2 0 2 3 DISCLAIMER Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. They use words such as "will," “anticipate,” “estimate,” “expect,” “project,” “intend,” “plan,” “believe” and other words and terms of similar meaning in connection with any discussion of future operating or financial condition, performance and/or sales. To provide comparable results, the company references “pro forma” financial metrics, which include the business results of Avient Protective Materials for periods prior to the Acquisition Date, as if the transaction occurred on January 1, 2021 and reflect Distribution as a discontinued operation.

That means materials must be strong, durable and fatigue- and corrosion-resistant.

In setting reengineering objectives, the manufacturer was mindful that simply layering components that meet the various UL specifications wouldn’t necessarily mean a UL listing for the finished product.

Materials and their impact on patient safety Increased use of Quality by Design (QbD) processes means that more consideration needs to be given to materials used and their impact on patient safety.

Materials and their impact on patient safety Increased use of Quality by Design (QbD) processes means that more consideration needs to be given to materials used and their impact on patient safety.

Materials and their impact on patient safety Increased use of Quality by Design (QbD) processes means that more consideration needs to be given to materials used and their impact on patient safety.

OnColor™ UL 94 Colorants* • More than 2,000 recognized concentrates available worldwide in all color options • HB rating for most of PP, PS, ABS, PC/ABS, PBT, PA, PA-GF, TPU generic resins • V-0, V-1, V-2 and 5VA/5VB ratings for more than 200 specific engineering resins • Master file of recognized concentrates with scope of use accessible in the UL product finder • Development of custom products for specific resins upon request • Compliance Letters available for REACH and RoHS Cesa™ Flame Retardant Additives for Glow Wire • Fire performance in line with different levels of Glow Wire temperatures (IEC 60695-2-12) • Let-Down Ratio adjustable to reach different levels of Glow Wire temperatures • Non-halogen (in accordance with IEC 61249- 2-21) and non-HBCD** solutions • Wide range of solutions adapted to different polymers (PP, PS, PC) • Color and flame retardants can be combined in one product • Compliance Letters available for REACH and RoHS APPLICATION BULLETIN * Solutions also sold as Renol™ UL 94 Colorants APPLICATION POLYMER GWFI TEMPERATURE TYPICAL LET-DOWN RATIO CONTENT HIPS 750–960°C 5–10% Non-HBCD flame retardant** PC 850–960°C 2–4% Non-halogen in accordance with IEC 61249-2-21 PP homopolymer 850–960°C 4% Non-halogen in accordance with IEC 61249-2-21 PP copolymer 850–960°C 4–8% Antioxidant - metal deactivator ** Non-HBCD means that Hexabromocyclododecane (HBCD) is neither used as starting material during the mixing phase of our products nor intentionally added during production, but it cannot be excluded that it is not present at level of ubiquitous traces in any of the raw materials used in manufacturing of our products. In this regard “ubiquitous” means that this substance is omnipresent and its occurrence cannot be avoided by any technical, physical or chemical measure. Avient makes no representations, guarantees, or warranties of any kind with respect to the information contained in this document about its accuracy, suitability for particular applications, or the results obtained or obtainable using the information.

We understand what it takes to limit the risk of skin sensitivity issues using engineered materials designed for prolonged skin contact. Collaborate with Avient and see what a positive difference the right polymer supplier can make.

We understand what your consumers want, and what you need.

Johnson is responsible for Avient’s global tax strategy, processes and administration to support the operational and legal requirements of the company, while working collaboratively with Avient’s Corporate Finance and Treasury departments to ensure consistent communication on transactional and tax planning matters. Before joining ITW, he served in the international tax practice of Ernst & Young LP in Detroit, Michigan, where he designed and implemented complex cross-border transactions, holding and financing company structures, and local country planning for Fortune 500 companies.