Versaflex™ HC Thermoplastic Elastomers Customized Versaflex™ TPEs provided soft-touch TPEs and met regulatory needs  Trilliant™ HC Thermoplastics and Versaflex™ HC TPEs for Surgical Stapler (Chinese)

CASE STUDY: VERSAFLEX™ SOFT-TOUCH THERMOPLASTIC ELASTOMERS Challe nge Accepted. THE IMPACT Versaflex soft-touch material offered Hoyt value— ergonomically, aesthetically, and functionally. Versaflex materials are well suited for a variety of archery equipment applications.

Versaflex™ TPE materials offer great compression set properties for gaskets that need a long lasting seal, and also create durable speaker skins with a silky feel. Versaflex™ TPE PORTABLE SPEAKER SOLUTIONS WATER AND DUST PROTECTION, DURABLE LOOK AND FEEL CE 3120-40 CE 3620 CE 3115 CE 3120-80 Application Gaskets Skins Skins Skins Product Aesthetics Tacky Translucent 42A 65A 65A 80A Special Characteristics Low compression set Low compression set High flow Abrasion resistance High strength Improved scratch/ mar, UV and abrasion Overmolding HOW VERSAFLEX TPEs MAKE THE DIFFERENCE IN PORTABLE SPEAKERS APPLICATIONS GASKETS Water and Dust Protection - Tight housing seals with no leakage over time Reduced Manufacturing Costs - Eliminates sourcing and assembly steps required of O-rings by overmolding directly onto the substrate; strong adhesion to PC & ABS - Faster cycle times than silicone or TPU Design Freedom - Injection molding TPEs in gaskets enables complex designs in which simple O-rings would be challenging to assemble SPEAKER SKINS Durable Look and Feel - Silky feel soft touch - Long lasting aesthetics with abrasion and UV resistance Reduced Manufacturing Costs - Eliminates sourcing and assembly steps required of silicone skins by overmolding directly onto the substrate; strong adhesion to PC & ABS - Faster cycle times than silicone or TPU Design Freedom - Overmolding TPE removes the need for mechanical interlocks and primers to get silicone materials to adhere to substrates To learn more about Versaflex TPEs for portable speakers, contact Avient at +1.844.4AVIENT. Versaflex TPEs safely deliver on all of these requirements, while also accelerating production speed and reducing manufacturing cost.

Microsoft PowerPoint - AVNT June IR Conferences_6.1.2023 1130AM AVIENT CORPORATION I N V E S T O R P R E S E N T A T I O N (NYSE: AVNT) J U N E 2 0 2 3 DISCLAIMER Forward-Looking Statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Continue fostering our Great Place to Work® culture Strategic ObjectivesStrategic Objectives Long Term Growth Rates Growth DriversGrowth Drivers $340 $455 $790 $1,175 $51 $84 $212 $668 $108 $113 $231 $293 $265 $358 $726 $830 8-12% 10% 8-10% 5% Sustainable Solutions Composites Healthcare Asia/Emerging Regions Profitable GrowthProfitable Growth Great Place to WorkGreat Place to Work 5.4% 11.5% 16.2% 2006 2018 2022 EBITDA Margins $0.14 $2.67 $3.04 2006 2018 2022 2022 data is pro forma for acquisition of Avient Protective Materials and Distribution divestiture TOP-TIER SUSTAINABILITY PERFORMANCE AND RECOGNITION Industry Sustainability Standards 90th percentile 84th ESG Ratings Performance 1 Innovation is the lifeblood of a specialty company. 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%  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  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 $0.60 $2.40 2023 GUIDANCE 20 Sales Adjusted EBITDA $845 $3,400 (in millions) (in millions) CASH FLOW / LEVERAGE 21 • Maintaining free cash flow and leverage guidance from February earnings call • IT investment to further integrate acquired businesses and capture operational efficiencies • Restructuring actions to streamline operations and improve profitability, primarily in Europe ($ 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 Composites 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 • Carbon footprint • Bio based content • Eco-Conscious Automotive • Light weighting • Recycled Content • VOC reduction • Recycle Solutions • Carbon Footprint Packaging • Recycle Solutions • 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 Pigments 12% TiO2 Dyestuffs 2% Polyethylene Nylon Polypropylene Styrenic Block Copolymer 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 37% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Building and END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) 9% 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 34% 38% END MARKET REGION 32 34% 21% Building & 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 52% 35% REGION 33 19% 8%Industrial 9% Defense Building & 32% 27% 14% Building & 3% 1% Defense 1% (18% of sales) 9% 2022 PROFORMA AVIENT REGIONAL SALES BY END MARKET 27% 14% 17% Building & (37% of sales)Transportation 12% Building & US & Canada (40% of sales) 56% 23% Building & 1% LATAM (5% of sales) 3% 34 PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Other Specialty / Note: Avient reflects 2023 estimated revenue of $3,400 and estimated run-rate CAPEX of $110M. 36 4 4 4 6 8 9 FREE CASH FLOW CONVERSION Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA.

Versaflex™ HC Thermoplastic Elastomers Versaflex™ HC & Versaflex™ HC BIO TPEs - BT Series Versaflex™ HC Material for Biopharmaceutical Tubing

Available in two Shore A hardnesses, Versaflex HC grades can also be customized to achieve desired haptic qualities. Customers have reported that devices made with Versaflex HC TPEs successfully withstood 10,000 antiseptic wipes. With a Shore A hardness of 48, Versaflex HC 1348 is slightly softer than Versaflex HC 1365, which has a durometer of 65A and a matte finish.  

Versaflex™ CE 3130-80N TPE provides non-blooming solution to wireless charger Versaflex™ Non-Blooming TPE Solution - Video Versaflex™ CE Non-Blooming Solutions

Versaflex™ TF Adhesive Thermoplastic Elastomers (TPEs) for Textile Fabrics (Chinese) Versaflex™ HC Material for Biopharmaceutical Tubing Versaflex™ TF Adhesive Thermoplastic Elastomers (TPEs) for Textile Fabrics (English)

Versaflex™ TF Adhesive Thermoplastic Elastomers (TPEs) for Textile Fabrics (Chinese) Versaflex™ HC Material for Biopharmaceutical Tubing Versaflex™ TF Adhesive Thermoplastic Elastomers (TPEs) for Textile Fabrics (English)

Caption: Versaflex™ CE 3140 TPEs provide high-frequency signal transparency to enable 5G network speeds with less interference. New transparent Versaflex CE 3140 TPEs are targeted at accessories such as cases for phones and other 5G mobile devices. Versaflex CE 3140 grades are available globally, injection moldable, and able to be overmolded to PC, ABS, PC/ABS, and COPE.