Sincerely, Members of the Governance and Corporate Responsibility Committee, Avient Board of Directors Sandra Beach Lin Richard Fearon Gregory Goff Neil Green Kerry Preete Dr. Energy efficiency improvements and green energy procurement 8% 2016–202370% in 2023 Launched solutions to reduce carbon footprint & enable circular economy GOAL MET Green electricity purchase agreements Delivered 8% organic CAGR (2016–2023) Utilized EcoVadis to facilitate assessments GOAL MET 47 “landfill free” sites HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 7 Avient Reaffirms Commitment to U.N. Khandpur President and Chief Executive Officer, Avient Corporation Neil Green Executive Vice President and Chief Digital Officer, Otis Worldwide Corporation Ernest Nicolas Chief Supply Chain Officer, HP Inc. 

Trilliant™ HC Healthcare Thermoplastics Stan-Tone™ HC Plus Silicone Dispersions for Healthcare Versaflex™ HC Thermoplastic Elastomers

Versaflex™ HC BT218 TPEs for Biopharmaceutical tubing provide weldability, kink resistance, and tensile strength performance. Versaflex™ HC 2110-57B TPEs comply with ISO 10993-4, ISO 10993-5, and USP Class VI and are suitable for Ethylene Oxide (EtO) sterilization without residue or allergens.

Versaflex™ HC Thermoplastic Elastomers Trilliant™ HC Healthcare Thermoplastics

Q 1 2 0 2 3 -8% +6% -1% Flat 14 Total Avient -2.6% 2023 G U IDA N CE $128 $525 $0.56 $2.40 2023 GUIDANCE 16 $800 $3,280 Sales Adjusted EBITDA Adjusted EPS (in millions) (in millions) 17 • Focused on working capital management, restructuring actions to streamline operations • IT investment to further integrate acquired businesses and capture operational efficiencies • Preserve Free Cash Flow to maintain net leverage CASH FLOW / LEVERAGE ($ millions) 2023E Cash Flow from Operating Activities 320$ Less: CapEx (140) Free Cash Flow 180$ Adjusted EBITDA 525$ Net Debt / Adjusted EBITDA 3.0x SUSTAINABILITY AS A GROWTH DRIVER 18 LONG-TERM REVENUE GROWTH DRIVERS Revenue From Sustainable Solutions* 2016-2022 $340M $405M $455M $550M $790M $915M 2016 2017 2018 2019 2020PF** 2021 2022PF*** $1,175M *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 ***2022 is Pro Forma for the acquisition of Avient Protective Materials and the divestiture of Distribution 60%+ Key Growth Drivers Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other (GDP Growth) Total Company Revenue SUSTAINABILITY REPORT 2022 • Provides progress on 2030 goals • Reaffirms commitment to U.N.

Pre-tested color range for PE, PP, PEBA, PC and ABS to speed up time to market White colorants specifically formulated for PP and PE pharmaceutical containers Healthcare Thermoplastics: Trilliant™ HC

The injection-moldable Versaflex™ HC 3810 series is formulated without animal derivatives and offers a wide range of durometers to serve a variety of medical device applications.  

Healthcare Thermoplastics: Trilliant™ HC

Healthcare Thermoplastics: Trilliant™ HC

Healthcare TPEs: Versaflex™ HC