Lahnstein, Germany 66. The Solution Avient developed a new technology suite that uses specialty engineered polyketone (PK) thermoplastics and helps our customers meet their goals to lower the carbon footprint of their products versus traditional materials, like PA66 and PA6. Waste: Preventing, Minimizing, Eliminating 6% Decrease in Waste to Landfill from 2019 Reportable Releases in Excess of Permitted Level to the Environment Since 2013 Total Waste Metric Tons Kg Waste/MT Sales Total Waste to Landfill 2019 2020 2021 2030 Goal tr ic T n 2019 2020 2021 70 60 50 40 30 20 10 58.27 54.16 53.51 Sustainability Report | 2021 66 Eliminating Plastic Waste Plastic is a miraculous, versatile material that positively impacts our world.

Purchase price multiple rapidly declining on strength of business and synergy capture (1) Financial information is pro forma to include a full year of Clariant Color acquisition 11.9% 16.2% 2019PF 2021 EBITDA Margins SPECIALTY TRANSFORMATION 46% 66% 86% 100% 0% 40% 60% 80% 100% 2005 2010 2015 2021 2022 PF % o f A dj us te d EB IT D A(1 ) JVs Distribution Performance Products & Solutions Specialty (1) Adjusted EBITDA is EBITDA excluding corporate costs and special items (2) Pro forma for the acquisition of Dyneema® and potential divestiture of Distribution (2) 38 CULTURE AND PEOPLE 39 OUR SPECIALTY JOURNEY CONTINUES 40 • Dyneema® brings leading technology and brand with the World’s Strongest Fiber™, deep history of application development and strong management team focused on specialty applications • Dyneema® transaction is aligned with our previously stated acquisition goal of expanding our composites and fiber capabilities • Similar to our other technology expansion acquisitions, Dyneema® allows us to leverage our invest-to-grow strategy • We plan to explore a possible sale of our Distribution business. OUR VALUATION VERSUS PEERS Avient Specialty Other 5.4 8.5 10.1 9.8 13.8 12.8 12.1 11.8 10.2 21.0 19.2 16.8 13.7 13.6 8.8 8.7 8.7 8.3 8.0 5.6 01 1) 01 6) 02 1) (T od ay ) PM PP AV VR C Historic Multiple APPENDIX Performance Additives 15% Pigments TiO2 Dyestuffs 3%Polyethylene Nylon 6% Polypropylene Other Raw Materials 30% Styrenic Block Copolymer ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 48 • Significant raw material price inflation and tight inventory continued in Q1 2022 o The average cost of hydrocarbon based materials was up 30% o The average cost of non-hydrocarbon based materials was up 20% • Additionally, we continued to experience other supply chain challenges during Q1 related to raw material spot purchases, freight constraints and productivity loss as a result of these shortages Annual Purchases RAW MATERIAL AND SUPPLY CHAIN UPDATE Based on 2021 purchases, excludes Distribution business SEGMENT DATA U.S. & Canada 50% Latin America 2021 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 23% 19% Building and END MARKET REVENUE (1) Total company sales and adjusted EBITDA of $4,819M and $581M, respectively, include intercompany sales eliminations and corporate costs $2,402M $409M $919M $164M $1,631M $94M Sales EBITDA Distribution Specialty Engineered Materials Color Additives and Inks $581M$4,819M 15% 34% Building & 1% Telecommunications C O L O R , A D D I T I V E S & I N K S 2021 REVENUE | $2 .4 BILLION 32% 40% Latin America END MARKET REGION 51 S P E C I A LT Y E N G I N E E R E D M AT E R I A L S 27% Building & 2021 REVENUE | $919 MILLION END MARKET 55% REGION 52 DI S T RI BU T I O N 26% 23% Building and 80% 3% Latin America END MARKET REGION K EY SU PPL IER S 2021 REVENUE | $1 .6 BILLION 53 TOTA L C O M PA N Y R E G I O N A L S A L E S BY END MARKET 30% 26%Healthcare 14% Building & 2% Energy (16% of sales) 32% Building & (25% of sales) 54 19% Building & US & Canada (50% of sales) 38% 33% Building & LATAM (9% of sales) Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.

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Custom PA grade provides thermal and electrical conductivity for headlamp LED heat shield component  Bergamid™ Polyamide Formulations offered nylon (PA66) formulation with high impact resistance and dimensional stability Custom PA grade provides thermal and electrical conductivity for LED heat sink

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Guatemala City, Guatemala 66. HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2022 66 Alpine Tunnel, Pitkin, Colorado by Rob Loveland Conventional Air Emissions Our atmospheric protection activities are based on a comprehensive analysis of our emissions. Planet—Water and Biodiversity Page 66 Hazardous Waste Management Amount of hazardous waste generated, percentage recycled RT-CH-150a.1 Total Hazardous Waste: 3,850 MT Total Hazardous Waste Recycled: 41% HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2022 98 Community Relations Discussion of engagement processes to manage risks and opportunities associated with community interests RT-CH-210a.1 Our internal team of business and functional leaders and their teams at all levels of the organization assess and identify key topics for our stakeholders on an ongoing basis to ensure our channels of engagement support ongoing collaboration.

Complēt™ 50% long glass fiber reinforced specialty PA66 thermoplastic replaces die-cast aluminum Nylon 66 - eBook OnForce™ PA 6/6, PP and TPU compounds and processing conditions

Rigid thermoplastics include both commodity thermoplastics and engineering thermoplastics, such as polypropylene (PP), polystyrene (PS), high impact polystyrene (HIPS), polycarbonate (PC), acrynitrile-butadiene-styrene (ABS), poly(ethylene terephthalate) (PET), poly(methylmethacrylate) (PMMA), styrene acrylonitrile (SAN), poly(phenylene oxide) (PPO), polyamide (PA), PC/ABS blend and PPO/PS blend etc..