FRIEDRICHSHAFEN, Germany – October 13, 2015 – Sylumis, a leading manufacturer of LED lighting systems based in Lieusaint, France, has successfully LAS VEGAS – September 28, 2015 – Today at Pack Expo 2015, PolyOne (booth #6464) unveiled a low-migration aluminum cap liner technology based

Typical applications include resistors, printable electronics, flexible electronics, conductive films, and LED lighting components. Stan-Tone™ WDN Water-Based Dispersions

They can be effectively used in applications requiring thermal management, such as LED-lighting, electronics, and automotive, or used for magnetic sealing in appliances, security devices, and more. Water based latex dispersions customized to meet your specific needs

CLEVELAND – September 25, 2018 – PolyOne recently collaborated with Rapid Oxygen, a Stamford, CT-based company founded in 2013, on polymer selecti Beyond Acrylic: New Resilience™ LS Materials from PolyOne Boost LED Lens Performance CHICAGO – May 8, 2018 – At Lightfair, the world’s largest architectural and commercial lighting trade show, PolyOne today unveiled two new rigid

FRIEDRICHSHAFEN, Germany – October 13, 2015 – Sylumis, a leading manufacturer of LED lighting systems based in Lieusaint, France, has successfully

Manufacturers using rPET require different properties based on their specific application, such as certain colors, stiffness and strength. STAGE SOLUTION CAPABILITIES Polymer Recycling ColorMatrix™ rePrize™ - Increases intrinsic viscosity to enhance use of recycled PET - Reduces yellowing and decontamination Materials Selection ColorMatrix™ Joule™ RHB - Reduces the energy required and costs - Ensures minimal yellowing and light-weighting Preform Molding ColorMatrix™ AAzure™ - Reduces yellowing and acetaldehyde levels for improved bottled strength Preform Molding ColorWorks™ - Provides a range of possible colors for end products based on the color of the rPET available for use Preform Molding Rejoin™ PCR Masterbatch - Combines pigments and functional additives with a 100% PCR carrier for polyolefins - Enables packaging that is 100% PCR Bottle Blowing & Filling ColorMatrix™ Optica™ - Excellent acid & thermal stability to reduce yellowing and create a haze-free container Bottle Blowing & Filling ColorMatrix™ Smartheat RHC™ Process Aid - Optimizes weight distribution to increase bottle strength and quality - Reduces energy required and costs Sales, Distribution, Consumption ColorMatrix™ Amosorb™ - Scavenges oxygen to extend the shelf life and preserve the freshness of food or beverages within container Sales, Distribution, Consumption ColorMatrix™ Ultimate™ UV - Blocks ultraviolet light transmission to protect the container and its contents - Enables light-weighting Sales, Distribution, Consumption ColorMatrix™ Lactra™ - High-performance light blocking that extends the shelf life of light-sensitive dairy products Taking the Next Steps Move Your Sustainability to the Next Level Because sustainable material solutions and technology are evolving at the speed of life, it takes fresh thinking, agile R & D, and imaginative use of next-generation materials to bring life-changing products to market safely and quickly. utm_source=eBook&utm_id=rPET Button 92: Button 93: Button 3: Button 83: Button 5: Button 6: Button 66: Button 67: Button 68: Button 69: Button 70: Button 71: Button 72: Button 73: Button 74: Button 75: Button 76: Button 77: Button 78: Button 79: Button 84: Button 85: Button 86: Button 87: Button 88: Button 89: Button 90: Button 91: Button 80:

BEIGE (W-75) LIGHT BLUE 658M Knowledge Base

They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. Maintain asset-light, 80% free cash flow conversion profile and be valued as a specialty formulator 5. 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.

ColorMatrix™ Ultimate™ UV390R Light Barrier  UV Light Barrier for PET: ColorMatrix™ Ultimate UV UV and Light Blocking Additives

ColorMatrix™ Ultimate™ UV390 Light Barrier for PET ColorMatrix™ Ultimate™ UV Light Barrier additives effectively block ultraviolet light transmission, protecting your product and brand integrity during storage, transportation, and in the retail environment. Discover how Avient’s ColorMatrix Amosorb oxygen scavengers and Ultimate UV™ light barrier can protect coconut water from oxygen and light-induced degradation