Our formulation expertise supports material science decisions, while our processing expertise guides customers to use the materials properly. We are Avient. 6 BETTER TOGETHER: POLYONE AND CLARIANT MASTERBATCH Key Financial Data (1) 2021E Sales $4.3 billion 2021E EBITDA $560 million 2021E Free Cash Flow $275 million 88% of EBITDA from specialty applications (1) As of April 30, 2021 webcast Synergies ($ millions) Three-Year Estimate Administrative $ 20 Sourcing 30 Operational 25 Total Synergies $ 75 7 CLARIANT COST SYNERGIES • On-track to realize $45 million of expected synergies in 2021 – up from previous estimate of $35 million • Relentless focus on guiding principles for acquisition integration: safety first, employee collaboration and exceeding customer expectations • Future revenue synergies in excess of $50 million by 2025 are not part of these estimates and represent additional growth over the long term 8 • Barrier technology • Functional additives • Processing aids • Flame retardants • Light-weighting additives Complementary Technologies • Clariant’s approved formulations and certified facilities • Legacy PolyOne’s leading share in distribution channels Healthcare Solutions • Clariant’s position in SE Asia, Latin America, Germany & Italy • Legacy PolyOne’s position in U.S., Canada and China Regional Strengths • Solutions with Avient’s engineered materials customers • Avient’s distribution channels Segment Cross-selling COMPLEMENTARY TECHNOLOGIES AND CUSTOMERS DRIVE REVENUE SYNERGIES Revenue synergy opportunities in excess of $50MM by 2025 The complementary aspects of our combined businesses are unquestionable. Clariant Masterbatch performance will be included in this year’s report. 2021 Sustainalytics ESG Risk Ranking Newsweek Most Responsible Companies 2016 2017 2018 2019 2020PF VOC Reduction Reduced Energy Use Bio-derived Content Eco-conscious Renewable Energy Applications Recyclability Reduced Material Requirements Lightweighting $275M $325M $355M $410M $560M 9 (1) Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) (2) 2020 is Pro forma to include full year of the Clariant Masterbatch business (2) Revenue from Sustainable Solutions 2016 – 2020 (1) SUSTAINABILITY FOR A BETTER TOMORROW 10 • Revenue from sustainable solutions expected to grow 11% in 2021 as our innovation efforts and collaboration with customers continues to accelerate • Relentless focus on delivering our 2030 sustainability targets to benefit the planet and people of the world while adding value to our customers, communities, associates and shareholders • Investments centered around innovation and global sustainability megatrends o Improving Recyclability – Technologies that allow for increased use of post-consumer recycled (PCR) material o Light-weighting – Composites and CAI applications to reduce weight and material requirements, which minimize energy and carbon emissions o Eco-Conscious – Health and human safety applications as well as Avient’s alternative materials to replace lead, PVC, halogens, BPA and other less eco-friendly options o Avient CycleWorks – New innovation center dedicated to advancing recycling and the circular economy through collaboration with customers and brand owners Enable 100% of products manufactured for packaging applications to be recyclable or reusable.

Q 1 2 0 2 3 -8% +6% -1% Flat 10 US & Canada Latin America EMEA Asia Total Avient -2.6% 2023 G U IDA N CE $128 $525 Q3 FY $0.56 $2.40 Q3 FY 2023 GUIDANCE 12 $800 $3,280 Q3 FY Sales Adjusted EBITDA Adjusted EPS (in millions) (in millions) 13 • Focused on working capital management, restructuring actions to streamline operations • IT investment to further integrate acquired businesses and capture operational efficiencies • Preserve Free Cash Flow to maintain net leverage CASH FLOW / LEVERAGE ($ 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 14 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.

Our formulation expertise supports material science decisions, while our processing expertise guides customers to use the materials properly. WHAT WE DO: MATERIAL SCIENCE 5 CUSTOM FORMULATION SUSTAINABILITY FOR A BETTER TOMORROW Revenue From Sustainable Solutions* 2016-2021 $310 205 140 80 75 45 40 20 $915M2021 Sales ($ in millions) *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 Future Growth Revenue Assumptions From Sustainable Solutions: 8 - 12% 6 S E CO N D Q UART E R 2022 RE S U LT S $122 $134 2021 2022 $0.87 $0.98 2021 2022 Q2 2022 PERFORMANCE (TOTAL COMPANY) 8 Sales Adjusted Operating Income $1,235 $1,302 2021 2022 + 5% Adjusted EPS + 10% + 13% (in millions) (in millions) (+ 10% excluding FX) (+ 16% excluding FX) (+ 20% excluding FX) Q2 2022 SEGMENT PERFORMANCE 9 CAI $624 $649 Sales ($ in millions) SEM Distribution $86 $94 Operating Income + 4% + 9% $404 $443 Sales $24 $27 Operating Income + 10% + 13% (1) $241 $244 Sales $37 $37 Operating Income + 1% Flat (+ 10% excluding FX) (+ 16% excluding FX) (+ 6% excluding FX) (+ 3% excluding FX) Q2 2021 $1,235 $122 Sustainable Solutions 17 7% 7 Healthcare 23 14% 5 Composites (ex Outdoor High Performance) 10 20% 4 Growth in Asia / LATAM 5 3% 1 Other 69 11% 5 Sub-total $1,359 10% $144 Outdoor High Performance Impact (9) (5) Wage Inflation and Overtime (7) Other Supply Chain Costs (2) Clariant Color Integration Synergies 7 Incentives, Other Employee Costs 4 FX (48) (7) Q2 2022 $1,302 5% $134 Q2 2022 SALES AND OPERATING INCOME (TOTAL COMPANY) 10 Sales Growth Rate Adjusted Operating Income$ millions Adjusted EBITDA Q2 EBITDA BRIDGE 11 Price increases more than offsets raw material and supply chain impacts Q2 2021 $ 159 Demand (29) $ millions CAI: Price / Mix 87 Inflation (58) SEM: Price / Mix 36 Inflation (24) Distribution: Price / Mix 45 Inflation (41) Net Price Benefit 45 Wage Inflation and Overtime (7) Other Supply Chain Costs (2) Clariant Color Integration Synergies 7 Incentives, Other Employee Costs 4 FX (7) Q2 2022 $ 170   China Lockdowns / Russia Impact $ (14) Outdoor High Performance (5) Transportation (5)  12 Q2 '21 Adjusted EPS 0.87$ Color, Additives and Inks 0.11 Specialty Engineered Materials 0.01 Distribution 0.03 Corporate Costs 0.01 F/X (0.05) Segment OI 0.11$ Interest Expense 0.03 Tax Rate (0.03) Q2 '22 Adjusted EPS 0.98$ Q2 EPS BRIDGE Key Updates • Provided progress on 2030 Sustainability Goals • Emphasized commitment to U.N.

Global Policy on Antitrust Updated February 2021 Table of Contents Guide For Compliance 1 Policy Overview 1 An Overview of U.S. Antitrust Laws 2 Antitrust Law Violations 3 Antitrust Potential Areas of Concern 3 Conclusion 5 Reporting Possible Violations 6 Avient Ethics Hotline 6 Protection from Retaliation 6 Antitrust Checklist 7 Quick Reference: Antitrust DO’s and DON’Ts 9 Guide For Compliance Avient is committed to promoting fair competition and free enterprise in the marketplace. Antitrust Laws Policy Overview Guide For Compliance Reporting Possible Violations

Our formulation expertise supports material science decisions, while our processing expertise guides customers to use the materials properly. National Defense budget of $842 billion submitted to Congress in Q1 2023 • European NATO members annual defense spend expected to increase by up to 20% Where Avient Wins:  Dyneema® is the world’s strongest fiber™  One of the highest strength to weight ratios of any material on Earth  Direct relationships with industry leading armor manufacturers  Resistant to most chemicals, UV, and moisture to handle any environment Avient Confidential 18 DEFENSE Source: US Department of Defense, defense.gov, NATO18 Source: TRANSPORTATION • Increased EPA regulations requiring improved fuel efficiency, enabled in part by lower-weight vehicles • Automakers preparing for 2/3 of U.S. vehicles to be 100% electric by 2032 Where Avient Wins:  Lightweight panels that establish both strength and stiffness resulting in decreased energy usage, lower emissions  Long-lasting Color applications to resist UV exposure, temperature fluctuations and exceed the stylistic requirements of global automakers 19 $130 $530 Q2 FY $0.60 $2.40 Q2 FY 2023 GUIDANCE 20 Sales Adjusted EBITDA $845 $3,400 Q2 FY Adjusted EPS (in millions) (in millions) CASH FLOW / LEVERAGE 21 • Maintaining free cash flow and leverage guidance from February earnings call • IT investment to further integrate acquired businesses and capture operational efficiencies • Restructuring actions to streamline operations and improve profitability, primarily in Europe ($ millions) 2023E Cash Flow from Operating Activities 350$ Less: Run-Rate CapEx (110) CapEx for IT System Upgrade (25) CapEx for Restructuring (15) Total CapEx (150) Free Cash Flow 200$ Adjusted EBITDA 530$ Net Debt / Adjusted EBITDA 2.9x LONG-TERM REVENUE GROWTH DRIVERS Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Healthcare 8–10% Composites 10% Asia / LATAM 5% Other (GDP growth) 2–3% Avient 6.5% 22 Sustainable Solutions 32% Asia / LATAM 15% Composites 8% Healthcare 6% Other (GDP Growth) 39% • Virtual presentation to be held September 20, 2023 • The company will be conducting an investor-focused presentation around our sustainability solutions portfolio Avient Confidential 23 SUSTAINABILITY INVESTOR DAY 23 $340M $405M $455M $550M $790M $915M 2016 2017 2018 2019 2020PF** 2021 2022PF*** SUSTAINABILITY FOR A BETTER TOMORROW Revenue From Sustainable Solutions* 2016-2022 ($ in millions) Organic Future Growth Revenue Assumptions From Sustainable Solutions: 8 - 12% 24 *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 $1,175M Lightweighting Eco-Conscious Recycle Solutions VOC Reduction Sustainable Infrastructure Human Health & Safety Reduced Energy Use Bio-polymers SUSTAINABILITY NEEDS BY MARKET B&C • Eco-Conscious • Carbon footprint • Resource conservation Healthcare • Carbon footprint • Bio based content • Eco-Conscious Automotive • Light weighting • Recycled Content • VOC reduction Consumer • Recycle Solutions • Light weighting • Carbon Footprint Packaging • Recycle Solutions • Light weighting • Food waste reduction Common Theme: CO2 Emission Goals Increasing Single-Use Plastic Regulation 25 INVESTING IN INNOVATION S U S T A I N A B I L I T Y P O R T F O L I O 26 AP P EN D IX 29 RAW MATERIAL 2022 ANNUAL PURCHASES Performance Additives 16% Pigments 12% TiO2 10% Dyestuffs 2% Polyethylene 11% Nylon 6% Polypropylene 5% Styrenic Block Copolymer 5% Other Raw Materials 33% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials • Cost inflation decelerating, particularly for hydrocarbon-based raw materials 2022 pro forma results for the acquisition of Avient Protective Materials SEGMENT DATA U.S. & Canada 40% EMEA 37% Asia 18% Latin America 5% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 20% Packaging 24% Industrial 15% Building and Construction 10% Telecommunications 4% Energy 4% Defense 6% END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) Transportation 9% Healthcare 8% 31 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs C O L O R , A D D I T I V E S & I N K S 2022 REVENUE | $2 .4 B ILL ION US & Canada 34% EMEA 38% Asia 20% Latin America 8% END MARKET REGION 32 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 8% Building & Construction 11% Telecommunications 1% Energy 2% 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 2022 PRO FORMA REVENUE | $1 .3 B ILL ION END MARKET US & Canada 52% EMEA 35% Asia 13% REGION 33 Packaging 5% Consumer 19% Healthcare 8%Industrial 16% Transportation 10% Telecommunications 10% Energy 9% Defense 15% Building & Construction 8% Packaging 32% Consumer 27% Healthcare 8% Industrial 14% Building & Construction 5% Telecommunications 3% Energy 1% Defense 1% Asia (18% of sales) Transportation 9% 2022 PROFORMA AVIENT REGIONAL SALES BY END MARKET Packaging 27% Consumer 14% Healthcare 5% Industrial 17% Building & Construction 10% Energy 5% Defense 8% EMEA (37% of sales)Transportation 11% Packaging 13% Consumer 24% Healthcare 12% Industrial 15% Building & Construction 13% Energy 5% Defense 5% US & Canada (40% of sales) Transportation 7% Packaging 56% Consumer 23% Healthcare 4% Industrial 7% Building & Construction 4% Telecommunications 1% LATAM (5% of sales) Transportation 5% Telecommunications 3% Telecommunications 6% 34 PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of May 31, 2023 Note: Avient reflects 2023 estimated revenue of $3,400 and estimated run-rate CAPEX of $110M. 36 3 2 3 3 4 4 3 3 4 5 5 6 8 9 A vi en t K W R P P G F U L A V Y R P M F M C H U N C E H X L E C L A S H E M N S C L FREE CASH FLOW CONVERSION Source: Peer data per Bloomberg as of May 31, 2023 Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA.

Our formulation expertise supports material science decisions, while our processing expertise guides customers to use the materials properly. Q 1 2 0 2 3 -8% +6% -1% Flat 14 US & Canada Latin America EMEA Asia Total Avient -2.6% 2023 G U IDA N CE $128 $525 Q3 FY $0.56 $2.40 Q3 FY 2023 GUIDANCE 16 $800 $3,280 Q3 FY Sales Adjusted EBITDA Adjusted EPS (in millions) (in millions) 17 • Focused on working capital management, restructuring actions to streamline operations • IT investment to further integrate acquired businesses and capture operational efficiencies • Preserve Free Cash Flow to maintain net leverage CASH FLOW / LEVERAGE ($ 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.

Processing & Design Guides

Processing & Design Guides

Product Selection Guide

Guided by its Core Values, Sustainability Promise and No Surprises PledgeSM,