Examples include: • Dyneema®, the world's strongest fiber™, enables unmatched levels of performance and protection for end-use applications, including ballistic personal protection, marine and sustainable infrastructure and outdoor sports • Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy • Light-weighting solutions that replace heavier traditional materials like metal, glass and wood, which can improve fuel efficiency in all modes of transportation and reduce carbon footprint • Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility Avient is a certified ACC Responsible Care® and a founding member of the Alliance to End Plastic Waste. 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 18 $130 $530 Q2 FY $0.60 $2.40 Q2 FY 2023 GUIDANCE 19 Sales Adjusted EBITDA $845 $3,400 Q2 FY Adjusted EPS (in millions) (in millions) CA SH FLOW / LEV ER AGE 20 • Maintaining free cash flow and leverage guidance from February earnings call • IT investment to further integrate acquired businesses and capture operational efficiencies • Restructuring actions to streamline operations and improve profitability, primarily in Europe ($ 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 DRI VERS 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% 21 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 22 SUSTAINABILITY INVESTOR DAY 22 $340M $405M $455M $550M $790M $915M 2016 2017 2018 2019 2020PF** 2021 2022PF*** SUSTA INAB ILITY F OR A BETTER TOMOR ROW Revenue From Sustainable Solutions* 2016-2022 ($ in millions) Organic Future Growth Revenue Assumptions From Sustainable Solutions: 8 - 12% 23 *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 SUSTA INAB ILITY NEEDS BY M ARKET 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 24 I NV ESTI NG I N INNOVATI ON S U S T A I N A B I L I T Y P O R T F O L I O 25 A P P E N D I X 28 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% 30 (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 2 0 2 2 R E V E N U E | $ 2 . 4 B I L L I O N US & Canada 34% EMEA 38% Asia 20% Latin America 8% END MARKET REGION 31 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 8% Building & Construction 11% Telecommunications 1% Energy 2% S P E C I A L T Y E N G I N E E R E D M A T E R I A L S 2 0 2 2 P R O F O R M A R E V E N U E | $ 1 . 3 B I L L I O N END MARKET US & Canada 52% EMEA 35% Asia 13% REGION 32 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% 2 0 2 2 P R O F O R M A AV I E N T R E G I O N A L S A L E S B Y E N D M A R K E T 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% 33 PEER COMPARISONS AV I E N T I S A S SE T L I G H T Capex / Revenue 2023E (%) Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of April 28, 2023 Note: Avient reflects 2023 estimated revenue of $3,400 and estimated run-rate CAPEX of $110M. 35 3 2 3 3 4 4 3 3 5 5 5 6 7 9 A vi e n t K W R P P G F U L R P M A V Y F M C H U N H X L C E E C L A S H E M N S C L F R E E C A S H F LOW C O N V E R S I O N Source: Peer data per Bloomberg as of April 28, 2023 Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA.

COLOR COMPLIANCE REGULATORY ADVICE AND DOCUMENTATION COLOR SUSTAINABILITY Reducing carbon footprint in the way that a colorant is formulated and processed has become an increasing priority for plastics processors. Manufacturers operating lean manufacturing systems can also benefit by driving down inventory requirements even further • Avient’s advanced liquid systems can be run at lower temperatures whilst maintaining stability allowing important energy cost and carbon footprint savings to be made LIQUID COLOR SERVICE PACKAGE Avient is dedicated to supporting its customers with a full package of support services to ensure optimum value from our advanced colorant and additive technologies.

COLOR COMPLIANCE REGULATORY ADVICE AND DOCUMENTATION COLOR SUSTAINABILITY Reducing carbon footprint in the way that a colorant is formulated and processed has become an increasing priority for plastics processors. Manufacturers operating lean manufacturing systems can also benefit by driving down inventory requirements even further • Avient’s advanced liquid systems can be run at lower temperatures whilst maintaining stability allowing important energy cost and carbon footprint savings to be made LIQUID COLOR SERVICE PACKAGE Avient is dedicated to supporting its customers with a full package of support services to ensure optimum value from our advanced colorant and additive technologies.

Q11: Carbon Black and Titanium Dioxide (TiO2) show up as carcinogenic hazards on some of our SDSs, and not on others. In other cases, PolyOne has been advised by the suppliers of certain raw materials (carbon black and titanium dioxide are two prime examples) that the classification of their materials as IARC category 2B carcinogens are based on certain studies involving rats, and due to a toxicological phenomenon known as “rat lung overload,” carcinogenicity seen in such rats is not believed to be extended to humans.

• Attractive appearance to final product • Long lasting color ENVIRONMENTAL ADVANTAGES • Environmental advantages • Less production costs • Lower carbon footprint • Lower chemical usage • Waste reduction MAGIQ FIBER COLORANTS - MASTERBATCH PORTFOLIO BLACK • Standard and special products with high pigment concentrations and excellent tinting strength • MBs at lower concentrations designed to meet specific customer needs • Black MB tailored for special requirements, with particular physical/rheological properties Product characteristics • Optimal melt flow properties allow a good mixture with the polymer matrix yielding the best possible spinnability TECHNICAL ANALYSES • DSC: Thermal analyses to characterize polymers, additives and colorants • TGA: Thermogravimetric analysis to evaluate thermal stability, plus inorganic pigment, and carbon black content in the Masterbatch • FT-IR: Infrared spectroscopy for the analysis of raw materials • Incineration oven to determine inorganic content • Melt Flow Tester to measure the Melt Flow Rate of MBs and Polymers • Filter test to measure the dispersion quality and aggregate content of materials contained in the polymer matrix • Intrinsic/Relative Viscosity of Masterbatches and polymers • Moisture content in the liquid colorants, MBs and polymers • UV-Visible spectrometry: instrumental evaluation of the color on yarn to perform quality control, color matchings and recipes adjustments • Yarn testing to evaluate mechanical properties, abrasion, dry heat, rubbing and other characteristics • Our pilot spinning lines have state-of-the-art take-up winders that spin up to 4,500 meters/minute.

ABS 248 PURPLE ABS 248 MINT GREEN ABS 248 YELLOW

HONDA TAN ABS HONDA GREY ABS ARTIC WHITE ABS

UV WHITE ROAD BASE ABS ABS RED 140332 3 ABS JENLAY WHITE

ABS WHITE F PC/ABS 7770C RANGER GREEN PC/ABS TAN 499 #20180

FORMAL GN ABS LAPIS BLUE ABS MOONLESS NT BK ABS