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 .

• You can be confi dent that, in formulating and manufacturing our materials, we use sustainable practices to provide long- term product viability and sound environmental stewardship • You can expect that the materials we produce contain only ingredients that conform to accepted legal and regulatory compliance guidelines • You can trust that PolyOne materials meet the rigorous quality and safety management standards required across the globe • You can be certain that PolyOne meets or exceeds the material safety data reporting requirements of your country or region • When you choose PolyOne, you can be confi dent our products will help you meet or exceed today’s stringent compliance standards HELPING CUSTOMERS MEET THEIR GOALS THROUGH MATERIAL SCIENCE 66672.indd main_6 3/25/19 4:00 PM 7 *PolyOne Sustainable Solutions defi nitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) 2016 2017 2018 20% INCREASE HELPING CUSTOMERS BECOME MORE SUSTAINABLE $480M $440M $400M $1.3 BILLION IN REVENUE FROM SUSTAINABLE SOLUTIONS* 2016–2018 Lightweighting Reduced Material Requirements Improved Recyclability Renewable Energy Applications Eco-conscious Composition Bio-derived Content Reduced Energy Use Volatile Organic Compound Reduction PolyOne off ers a broad portfolio of technologies that help our customers—and our planet—be more sustainable.

Long-term trends that currently provide opportunities to leverage our strategy include the drive toward sustainability in polymers and their processing, the emergence of biodegradable and bio-based polymers, consumer concern over the use of bisphenol-A (BPA) in infant-care products and developing legislation that bans lead and certain phthalates from toys and child-care items.

We help our customers increase post- consumer recycled content, formulate with bio-based materials, use less material during production, reduce energy required for production, and build alternative energy applications.