Patterson Chairman, President and CEO 0% 20% 40% 60% 80% 100% 2005 2010 2015 2021 2022PF(2) % o f A d ju st e d E B IT D A (1 ) (1) Adjusted EBITDA is EBITDA excluding corporate costs and special items (2) Pro forma for the acquisition of Dyneema and divestiture of Distribution Specialty Transformation Commodity JVs Performance Products & Solutions Distribution Specialty Businesses 7% 46% 66% 86% 100% End Market Transformation(1) � �� �� �� �� �� �� 2006 2022PF(2) 2006 2022PF(2) (1) End market revenue as a percent of total (2) Pro forma for the acquisition of Dyneema and divestiture of Distribution Transportation Building & Construction Healthcare Packaging Consumer 57% 19% 58% 22% 14% 43% 9% 10% 8% 10% 4% 24% 20% 8% Defense 6% United States Securities and Exchange Commission Washington, DC 20549 FORM 10-K ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to .

Patterson Chairman, President and CEO *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) **2020 is Pro forma to include full year of the Clariant Color business 2016 2017 2018 2019 2020PF** 2021 Revenue from Sustainable Solutions* 2016–2021 Lightweighting Eco-conscious Sustainable Infrastructure Human Health & Safety Reduced Energy Use Bio-polymers Recycle Solutions VOC Reduction 12% Organic CAGR End Market Transformation* � �� �� �� �� �� �� Transportation Building & Construction Healthcare Packaging Consumer 57% 21% 57% 22% 14% 43% 11% 10% 8% 10% 4% 19% 23% 15% $790M $550M $405M $455M $340M $915M 2006 2021 2006 2021 *End market revenue as a percent of total United States Securities and Exchange Commission Washington, DC 20549 FORM 10-K ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to .