Christopher Murphy Vice President, Research and Development Chief Innovation Officer PolyOne Corporation Page 22 2 lbs Plastic = 3 lbs aluminum or 8 lbs steel or 27 lbs glass 33% less material by weight than aluminum 75% less material by weight than steel 93% less material by weight than glass Requires 91% less energy to recycle a pound of plastic versus a pound of paper Source: SPI: Sustainability and the Plastics Industry Plastics: Key to Future Sustainable Development PolyOne Corporation Page 23 Decreasing Dependence on Fossil Fuels Globalizing and Localizing • Aging population • Longer life expectancy • Healthy living • Aging in place • Environmental consciousness • Alternative energy • Resource efficiency • Biotechnology • Global leader/local expert with customized solutions • Global OEMs seeking one standard of service everywhere • Efficiency focus • Reduced size/weight • Mass transit • Alternative materials • Electric vehicles Protecting the Environment Improving Health and Wellness Alignment with Megatrends PolyOne Corporation Page 24 Innovation Drives Earnings Growth $20 $53 2006 2013 Research & Development Spending ($ millions) Specialty Platform Vitality Index Progression* *Percentage of Specialty Platform revenue from products introduced in last five years 14.3% 30.7% 2006 2013 Specialty Platform Gross Margin % 19.5% 43.0% 2006 2013 PolyOne Corporation Page 25 Prototype Frame Opportunity Scale-up & Test Market Build Business Case Commercial Launch Phase 1 Phase 2 Phase 3 Phase 4 Phase 5 4 11 5 10 6 9 3 4 2 15 9 1 10 4 Breakthrough Platform Derivative A Rich Pipeline of Opportunity Number of Projects 25 14 19 17 18 93 Addressable Market ($ millions) TBD TBD $800 $450 $450 $1,700 PolyOne Corporation Page 26 Recent Innovations Aligned with Megatrends in Key End Markets and 2015 Goals Robert M. Patterson President and Chief Executive Officer PolyOne Corporation Page 27 Well Positioned for Revenue Growth Addressable Market by Platform $540 $215 $120 $40 $260 $525 ($ millions) Design/Service Sustainable Solutions Surface Modification Lightweighting Thermal Control Flame Retardancy $1.0 - $2.0 Billion of revenue generated from new products in 5 years Gross margin on new products exceed current gross margin by at least 10 percentage points World class vitality index of ≥ 35% 2018 PolyOne Corporation Page 28 Megatrends Aligned with Key End Markets Decreasing Dependence on Fossil Fuels Protecting the Environment Improving Health and Wellness Megatrend End Markets Globalizing and Localizing Health & Wellness Transportation Packaging Consumer PolyOne Corporation Page 29 2006 2013 Revenue ($ millions) Health and Wellness Evolution General purpose tubing TPE applications from GLS Specialty tubing Ergonomic enhancements Pre-certified biocompatible colorants Highly sophisticated catheter and drug delivery components Chemical and heat sterilizable materials Authentication and protection technologies Addressing wellness, prevention, diagnostic and therapy changes in healthcare setting Healthcare packaging solutions 2006 2015 & Beyond $416 $105 PolyOne Corporation Page 30 Transportation Evolution General purpose formulations (bumpers, roof racks) Long fiber for lightweighting Thermal management for LED lighting Thermoset composite pultrusions Conductive polymers for EMI shielding Formulations for aerospace interiors Thermoplastic composites High temperature formulations for aerospace Expand 3D printing capabilities 2006 2015 & Beyond 2006 2013 Revenue ($ millions) $709 $315 PolyOne Corporation Page 31 Packaging Evolution Masterbatch colors and PVC packaging materials TPEs to enhance brand appeal and consumer functionality Liquid color and additive technologies to extend shelf life, preserve taste and differentiate brands Leveraging color, additives and sheet technology for healthcare and consumer packaging solutions 2006 2015 & Beyond 2006 2013 Revenue ($ millions) $612 $260 PolyOne Corporation Page 32 Consumer Evolution Commodity plastic and masterbatch color solutions Engineered materials to enhance customer appeal through visual and performance improvements Formulated metal- to-polymer conversion to enhance performance and reduce manufacturing costs Biopolymers & composite materials leveraging unique color technology to build brand identity 2006 2015 & Beyond 2006 2013 Revenue ($ millions) $394 $228 PolyOne Corporation Page 33 Interactive Display Introduction PolyOne Corporation Page 34 Interactive Displays INNOVATION DISCUSSION LEADER TECHNOLOGIES M ARKETS Polycast™ Bullet Resistant Sheet Aerospace GlasArmor™ Ballistic Resistant Panels Security reFlex™ Bio-Based Plasticizer Solutions Wilflex™ Oasis Hydrate InVisiO℠ Color Inspiration Forecast In-Store Audits OnColor™ Portfolio Light Weighting Thermal Management Corrosion Resistance Design Flexibility Sustainability Global Supply Chain Ergonomics and Aesthetics Consumer Appeal 9) Consume r Ele ctronics Solutions Walter Ripple General Manager GLS Personal Electronics Wearable Electronics Hand Held Devices Portable Audio 7) M e tal Re place me nt Te chnology Kurt Schuering Vice President Global Key Account Management Aerospace Transportation Electrical & Electronics Sporting and Shooting 8) M e dical De v ice Solutions Dr.

POLYSTRAND™ THERMOPLASTIC COMPOSITE PANELS APPLICATION & INSTALLATION GUIDE PRODUCT DESCRIPTION FEATURE BENEFIT Exceptional strength-to-weight ratio Lightweight yet strong structural performance and increased payloads Resistance to UV light, chemicals, moisture degradation and rot Withstands harsh conditions Tough and impact resistant Durability and long product life Dimensionally stable Consistent performance in extreme temperature and humidity fluctuations Strong adhesive properties Easy bonding to various materials FEATURE BENEFIT Ready-to-install Fewer parts & reduced scrap Large format Improved aesthetics with seamless designs Made via continuous-fiber manufacturing process Consistent quality in every panel PERFORMANCE ADVANTAGES MANUFACTURING ADVANTAGES Polystrand™ Thermoplastic Composite Panels are engineered to provide simplified installation, long-lasting components, and overall cost reduction.

If a present or future law, governmental decree, order, regulation, or ruling under any existing or future legislation prevents Seller from increasing or revising the price as provided herein, or nullifies or reduces any price or price increase hereunder, upon written notice from one to the other Seller and Buyer will attempt to identify mutually agreeable changes to conform this contract with such law, decree, order, regulation, or ruling.

Any of these risks could have an adverse effect on our international operations by reducing demand for our products. Lower volume related to legacy Spartech reduced operating income by $13.2 million. By laddering the maturity structure, we avoid concentrations of debt maturities, reducing liquidity risk.

Purchase price multiple rapidly declining on strength of business and synergy capture 10 $133 $205 2019PF 2021 10 Clariant Color EBITDA Growth Purchase Price Multiple 10.8x 7.0x 6.1x 2019PF 2021 2021 w/ Full Synergies (1) (1) 11.9% 16.2% 2019PF 2021 EBITDA Margins (1) CLARIANT COLOR: TRANSFORMATIONAL ACQUISITION ($ in millions) (1) Financial information is pro forma to include a full year of Clariant Color business ($ millions) Initial Synergy Estimate 2021 Synergy Realization Total Synergies Expected Administrative $ 18 $ 29 $ 40 Sourcing 24 20 24 Operational 18 5 21 Total Synergies $ 60 $ 54 $ 85 C L A R I A N T C O LO R I N T E G R AT I O N & C O S T S Y N ERG I E S U PDATE 11 • Integration going extremely well: synergy target increased to $85 million at December 9th Investor Day • Relentless focus on guiding principles of safety first, employee collaboration and exceeding customer expectations • Future revenue synergies are not part of these estimates and represent additional growth over the long term S U S TA I NA B I L I T Y F O R A B ET T E R TO M O R ROW 12 • Revenue from sustainable solutions grew 16% in 2021 and expected to grow 8-12% in 2022 as our innovation efforts and collaboration with customers accelerates • Investments centered around innovation and global sustainability megatrends o Enabling a circular economy – Technologies that allow for increased use of post-consumer recycled (PCR) material and improve recyclability of plastics 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 12 *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 12 2016 2017 2018 2019 2020PF** 2021 $405M $455M $550M $790M Revenue From Sustainable Solutions* 2016-2021 $915M $340M PEOPL E C U L T U R E I S E V E R Y T H I N G Community Service 7x Safer than Industry Average World-Class Safety Leadership Development Over $16 million raised since 2010 Diversity & Inclusion 13 Q4 2020 $997 $80 Sustainable Solutions 23 12% 8 Healthcare 53 43% 9 Composites 7 22% 2 Growth in Asia / LATAM 14 10% 3 Other 118 23% 2 Sub-total $1,212 22% $104 Wage Inflation and Overtime (11) Other Supply Chain Costs (4) Synergies 9 Incentives, FX, Other Employee Costs (10) (13) Q4 2021 $1,202 21% $85 Q4 2021 SALES AND OPERATING INCOME ( T O TA L C O M PA N Y ) 14 Sales Growth Rate Adjusted Operating Income$ millions Adjusted EBITDA Q4 EBITDA BRIDGE 15 Price increases more than offsets raw material and supply chain impacts Q4 2020 $ 118 Demand - $ millions CAI: Price / Mix 62 Inflation (45) SEM: Price / Mix 25 Inflation (20) Distribution: Price / Mix 114 Inflation (109) Net Price Benefit 27 Wage Inflation and Overtime (11) Other Supply Chain Costs (4) Synergies 9 Incentives, FX, Other Employee Costs (13) Q4 2021 $ 126    Transportation (5)$ Outdoor High Performance (3) Other 8 Total Demand - Q4 2021 SEGMENT PERFORMANCE 16 CAI $526 $581 Sales ($ in millions) SEM Distribution $58 $61 Operating Income + 11% + 6% $305 $425 Sales $18 $22 Operating Income + 39% + 22% (1) $191 $228 Sales $30 $29 Operating Income + 19% - 3% 2 0 2 2 O U T L O O K REVENUE GROWTH DRIVERS Growth Drivers Long-Term Growth Rate 2022E Growth Rate Sustainable Solutions 8–12% 12% Healthcare 8–10% 10% Composites 10% 3% Asia / LATAM 5% 6% Other (GDP growth) 2–3% 2–3% Avient 6.5% 6% 18 Excluding Outdoor High Performance 13% (7.5% excl. FX) 2022 GROWTH PROJECTIONS ( T O TA L C O M PA N Y ) 19 $3.05 $3.50 2021 2022E Full Year – Adjusted EPS + 15% (+ 17% excluding FX) $0.89 $0.95 2021 2022E Q1 – Adjusted EPS + 7% (+ 10% excluding FX) ($ millions) Q1 Full Year Q1 Full Year 2021 - Actual 1,162$ 4,819$ 123$ 429$ Sustainable Solutions 27 110 12 44 Healthcare 15 66 4 13 Composites (excl.Outdoor High Performance) 11 29 5 13 Outdoor High Performance Applications (7) (20) (4) (10) Growth in Asia / LATAM 10 51 3 11 Other 57 115 9 12 Sub-total 1,275$ 5,170$ 152$ 512$ Wage Inflation and Overtime (12) (18) Other Supply Chain Costs (4) (7) FX Impact (25) (70) (4) (8) Synergies 4 15 Travel, Other Employee Costs (1) (4) 2022 - Estimated 1,250$ 5,100$ 135$ 490$ Sales Adjusted Operating Income 2022 SALES AND OI – Q1 AND FULL YEAR ( T O TA L C O M PA N Y ) 20 ($ millions) 2021 2022E Cash Flow from Operating Activities 234$ 385$ Less: Run-Rate CapEx (86) (90) CapEx for Clariant Integration (15) (20) CapEx for IT System Upgrade - (25) Total CapEx (101) (135) Free Cash Flow 133$ 250$ Adjusted EBITDA 581$ 635$ Net Debt / Adjusted EBITDA 2.2x 1.8x 21 C A SH F LOW / L E VE R AGE 22 • Record results – highest level of sales ($4.8B) and earnings ($3.05 adjusted EPS) in company history • Successful Clariant Color integration – net debt to adjusted EBITDA reduced to 2.2x, one-year ahead of schedule • Recognized as one of America’s Most Responsible Companies by Newsweek • Earned 3rd consecutive Great Place to Work certification 2021 HIGHLIGHTS 23 • 15% adjusted EPS growth to $3.50, led by growth in sustainable solutions and increased synergy realization • Continued strong synergy capture from the Clariant Color integration: $75M anticipated run-rate synergies by the end of 2022 • Adjusted EBITDA of $635M represents 9% growth above 2021 – 11% excluding the impact of foreign currencies • Deleveraged to 1.8x net debt to adjusted EBITDA by the end of 2022 2022 SUMMARY PEER COMPARISONS 25 As a specialty formulator, we don’t require significant capital investment, as compared to the base resin raw material suppliers we purchase from.

Examples include: • 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 employs approximately 8,800 associates and is certified ACC Responsible Care® and a founding member of the Alliance to End Plastic Waste. Annual Purchases RAW MATERIAL AND SUPPLY CHAIN UPDATE Based on 2021 purchases, excludes Distribution business D Y N E E M A A C Q U I S I T I O N 32 15x stronger than steel Reduces weight by 30% vs. other solutions Well-maintained global asset base poised to serve growing demand • Purchase price of $1.48B represents 11.4x multiple of 2022 EBITDA • Acquisition will expand Avient’s composites and fiber portfolio with Dyneema®, the World’s Strongest Fiber™ • $415M sales and 30%+ EBITDA margins; Immediately accretive to pro forma 2022 EPS, adding $0.35 • 1,300 patents globally, ~50% of sales patent protected • 1,000+ employees across global production network and dedicated technology centers • Composites platform will increase from $261M to $680M in revenue and from $49M to $180M in EBITDA Indicates Dyneema ® location $175M (42%) $65M (16%) $175M (42%) 2022E Sales By Region ($M) (1) $0.35 EPS excludes intangible amortization (2) Based on 2022 expected results (1) (2) (2) F I T W I T H F O U R P I L L A R S T R AT E G Y 33 Specialization • Innovation-led organization with tremendous intellectual property value in trademarks, patents and “know-how” • Deep history of application development and premium, leading brand with the World’s Strongest FiberTM Globalization • Global customer base with an established presence across all major geographic regions • Global technology centers complement existing Composites applications and expertise Operational Excellence • Best-in-class safety performance • Well-run and maintained asset base fit to serve future growth • Highly effective and reliable supply chain with emphasis on optimizing service to customers Commercial Excellence • Deep customer relationships extend across the value chain and drive ability to grow • Offer a full suite of services with an active role in design, development and commercialization People Experienced and talented associates with a passion for safety, specialization and winning DY N E E M A ® OV E RV I E W K E Y I N D U S T R I E S PERSONAL PROTECTION Military • Law Enforcement • First Responders Body Armor • Helmets • Vehicle Protection $215M MARINE & SUSTAINABLE INFRASTRUCTURE Towing / Mooring • Aquaculture • Floating Wind • Offshore Cranes $130M CONSUMER Consumer • Outdoor High Performance • Safety Equipment $70M 34 Figures reflect 2022 expected sales MIFOverview Competition Value chain & Go-to-market Strategy Innovation Financials TECHNOLOGY 35 1,200 1,300 2,500 Avient Dyneema Combined Patents • True specialty business – the World’s Strongest Fiber™ • Deep history of application development with customers, strongest in the industry • The only UHMwPE (ultra-high molecular weight polyethylene) fiber producer that is backward integrated o Provides innovation advantage through control of all steps of the process • Complementary with our existing reinforced film expertise (PolyStrand) and engineered fiber presences (Fiber-Line) WINNING PROPERTIES Ultra high strength vs. weight Highly flexible Floats on water Chemically inert; no smell/taste and non-toxic High resistance to UV radiation Self-lubricating, with low friction One-of-a-kind technology ® FORMULATION PROCESS 36 • Like Avient, Dyneema® offers similar core competencies around formulation and material science • Technology that combines polymers and fibers to provide specialized, high performing solutions for customers • Design capabilities ensure that applications are highly customized for the specified end use DYNEEMA ® IN THE VALUE CHAIN 37 UHMwPE Fiber / Tapes Military Personnel, Law Enforcement Heavy Marine, Offshore Wind Energy and Mooring, Aquaculture Outdoor, Footwear, Apparel, Inflatables • Material Science • Formulation • Service INTERMEDIATE MANUFACTURING (CUSTOMERS) OEM / APPLICATION DEMAND TRENDS 38 • Military spending and near-term demand for higher performing personal protection products (like Dyneema®) expected to increase o European NATO members annual defense spend expected to increase by up to 20%(1) o Japan aiming to almost double defense spending over the next 5 years(2) o Accelerated launch of next generation technology in North America • Policy-driven demand for sustainable energy; growth in floating offshore wind farms which require advanced, durable technology o Offshore wind expected to grow at a CAGR of 32% with the level of annual installations quadrupling over the next five years(3) • Continued investment in aquaculture as a sustainable food source(4) • Strong demand in outdoor high performance space across niche consumer applications aligns with 10% growth assumption for Avient’s Composites portfolio Sources: (1) “Funding NATO”, NATO.int (2022年4月1日) (2) “Japan Ruling Party Calls for Defense Spending Boost to 2% of GDP”, WSJ (2022年4月21日) (3) “Global Wind Report 2021”, Global Wind Energy Council (4) “Aquaculture Supports a Sustainable Earth”, NOAA Fisheries 39 A L I G N M E N T W I T H S U S T A I N A B I L I T Y G O A L S P RO D U C T S AVIE NT ’S E XIS T ING COM P OS IT E S P ORT F OL IO D I V E R S E C A P A B I L I T I E S A N D S O L U T I O N S S E R V I N G M A N U F A C T U R E R S A N D O E M S LFT Tapes Laminates/Panels Shapes Pultrusion Engineered Fibers 40 AV I E N T ’ S C O M P O S I T E S P O RT F O L I O S A L E S A N D E B I T DA 41 $74 $84 $216 $212 $261 $5 $10 $32 $41 $49 $180 0 50 100 150 200 $- $50 $100 $150 $200 $250 $300 $350 $400 $450 $500 $550 $600 $650 $700 $750 2017 2018 2019 2020 2021 2022E $680 ($ in millions) • Dyneema® acquisition will further improve Composites EBITDA margins to 26% • Dyneema® will complement our existing portfolio with deep formulation expertise, innovative culture and global commercial presence • Composites will continue to be a key growth driver to deliver future revenue growth in excess of GDP (1) Pro forma for the acquisition of Dyneema® (1) SEGMENT DATA U.S. & Canada 50% EMEA 25% Asia 16% Latin America 9% 2021 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 23% Packaging 19% Industrial 16% Building and Construction 10% Telecommunications 4% Energy 2% 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 (1) Transportation 11% Healthcare 15% 43 Packaging 34% Consumer 21% Healthcare 8% Industrial 16% Building & Construction 10% Transportation 9% Energy 1% Telecommunications 1% C O L O R , A D D I T I V E S & I N K S 2 0 2 1 R E V E N U E | $ 2 . 4 B I L L I O N US & Canada 32% EMEA 40% Asia 21% Latin America 7% END MARKET REGION 44 All charts reflect 2021 financials 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 Consumer 27% Healthcare 10% Packaging 7% Telecommunications 16% Transportation 11% Industrial 11% Building & Construction 11% Energy 7% 2 0 2 1 R E V E N U E | $ 9 1 9 M I L L I O N END MARKET US & Canada 55% EMEA 25% Asia 20% REGION 45 All charts reflect 2021 financials D I S T R I B U T I O N Healthcare 26% Consumer 23% Packaging 5% Industrial 20% Transportation 16% Building and Construction 8% Energy 1% Telecommunications 1% US & Canada 80% Asia 3% Latin America 17% END MARKET REGION K E Y S U P P L I E R S 2 0 2 1 R E V E N U E | $ 1 . 6 B I L L I O N 46 All charts reflect 2021 financials T O T A L C O M P A N Y 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 30% Consumer 26%Healthcare 13% Industrial 14% Building & Construction 5% Telecommunications 2% Energy 2% Asia (16% of sales) Transportation 8% Packaging 32% Consumer 13% Healthcare 5% Industrial 17% Building & Construction 12% Telecommunications 5% Energy 4% EMEA (25% of sales) Transportation 12% 47 Consumer 25% Healthcare 19% Packaging 10% Industrial 17% Building & Construction 10% Telecommunications 4% Energy 2% US & Canada (50% of sales) Transportation 13% Packaging 38% Consumer 33% Healthcare 8% Industrial 10% Building & Construction 5% Telecommunications 1% LATAM (9% of sales) Transportation 5% All charts reflect 2021 financials 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.

By 2030, Avient will reduce waste to landfill by 35% from the 2019 baseline. Replacing equity awards with cash also would increase cash compensation expense and reduce cash available for other strategic purposes. Additionally, negative discretion can be used to reduce the payment to zero.

A safety management system is in place in all our locations to analyze, reduce risk, and improve safety performance.

sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://www.mullerquaker.com/products/greek100/greek100-peach-and-passion-fruit&ei=-acYVZq7EIqwyASDjYL4CA&bvm=bv.89381419,d.cWc&psig=AFQjCNGNCQY1_dCN2RPLzxtap_Pu0omTXQ&ust=1427765484498432 POLYONE CORPORATION 22 2016 Revenue: $0.7 Billion At a Glance: Performance Products & Solutions 2016 Revenue by Industry Expanding Profits 5.5% 6.9% 3.8% 3.6% 5.5% 4.3% 6.3% 7.2% 7.7% 8.3% 12-14% 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2020 Operating Income % of Sales Platinum Vision 11.1% B & C 30% Transportation 18% W & C 16% Industrial 16% Appliance 6% Consumer 5% Packaging 5% E & E 3% Healthcare 1% United States 78% Canada 16% Latin America 4% Asia 2% Key Applications POLYONE CORPORATION 23 2016 Revenue: $1.1 Billion At a Glance: Distribution Key Suppliers ROIC Expanding Profits 2.6% 3.0% 3.5% 4.0% 4.6% 5.6% 6.4% 5.9% 6.1% 6.6% 6.5-7.5% 6.4% 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2020 Operating Income % of Sales Platinum Vision 15% 51% 2006 2016 Transportation 24% Healthcare 22% Industrial 18% Consumer 15% Appliance 6% E & E 5% B & C 4% Packaging 4% W & C 2% http://www.avient.com/Pages/VariationRoot.aspx 24 POLYONE CORPORATION Application Examples POLYONE CORPORATION 25 Luxury Packaging with Gravitech Density Modified Polymers  Impart weight, sound and metallic finish to caps and closures for cosmetics and spirits applications  Elevate quality and prestige perceptions among high-end consumers  Eliminate time and cost associated with secondary operations and assembly POLYONE CORPORATION 26  Eliminate costs by increasing pigment density  Enhance color performance without altering form and formulation  Increase design capabilities by reducing weight and layer thickness Optimize Color Usage with OnColor Super Concentrates POLYONE CORPORATION 27  Inhibit microbial growth on polymer surface  Enhance value or products and devices  Highly versatile concentrate with the ability to be incorporated into a wide variety of products Combat Bacteria Formation with WithStand Antimicrobial Technology POLYONE CORPORATION 28 Medical Device Housings with Chemically Resistant Engineered Polymers  Durable, long-lasting products stand up to the most aggressive disinfectants  Minimize environmental stress cracking and discoloration  One of the broadest medically approved polymer and colorant portfolios POLYONE CORPORATION 29 Color & Design Services  Greater control of color development and supply chain  Work across entire design process from concept to commercialization  Inspire creativity in the use of polymer materials, colors and effects  Innovative brand differentiation  Faster development timelines POLYONE CORPORATION 30 Outdoor Applications  Leading provider of high performance specialty materials for the recreational and sports & leisure industry  Well positioned across all segments to address market needs  Metal to Polymer Conversion  Lightweighting  Thermal Management  Impact Performance Source: Outdoor Industry Association POLYONE CORPORATION 31 Fiber Colorants Solutions for clothing, apparel, footwear, automotive & sporting goods  ColorMatrix Fiber Colorant Solutions  Proprietary advanced liquid color formulations and equipment enable greater efficiency and productivity  Eliminates aqueous dyeing and its associated wastewater treatment  Solid Color Concentrates  Extrusion-spun fibers colored via solid masterbatch POLYONE CORPORATION 32 High-Barrier Packaging Containers  Capability to extrude up to 13 layers  Strong oxygen and moisture vapor transmission protection  Can be made symmetrical or asymmetrical to meet customized needs of broad variety of applications  Barrier protection and superior sensory properties 1 Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Senior management uses comparisons of adjusted net income attributable to PolyOne common shareholders, adjusted earnings per share (EPS) attributable to PolyOne common shareholders and operating income before special items to assess performance and allocate resources because senior management believes that these measures are useful in understanding current profitability levels and that current levels may serve as a base for future performance.

PY ( T O TA L C O M PA N Y ) $790 $719 2022 2023 $107 $114 2022 2023 Sales Adjusted EBITDA (in millions) $0.42 $0.52 2022 2023 Adjusted EPS (in millions) - 9% + 7% + 24% Sales Adjusted EBITDA Adjusted EPS 13 Q4 2023 SEGMENT PERFORMANCE 14 CAI $491 $459 Sales (in millions) $70 $84 EBITDA SEM $301 $260 Sales $55 $49 EBITDA - 7% - 14%+20% - 11% 2022 2023 (in millions) Q4 EBITDA BRIDGE ( T O TA L C O M PA N Y ) 15 $ millions CAI: Price / Mix 11 Deflation 14 SEM: Price / Mix 4 Deflation 9 Net Price Benefit 38 Cost Reductions 13 Wage Inflation (8) Other (2) Q4 2023 $114 Adjusted EBITDA Q4 2022 $ 107 Demand (34) • Demand was down, but less than in previous quarters, due to slowing pace of destocking • Positive net price benefit: o CAI – Pricing flat with favorable mix from uptick in packaging and consumer end markets and raw material deflation o SEM - Pricing flat with favorable mix from Composites and raw material deflation • Cost reductions primarily driven by reduced administrative costs and cost synergies 2 0 2 4 G U I D A N C E 2024 GUIDANCE Full Year 2024 Guidance Adjusted EBITDA $505 to $535 million Adjusted EPS $2.40 to $2.65 Interest Expense $105 to $110 million Adjusted Effective Tax Rate 23% to 25% Capital Expenditures ~$140 million 17 Q1 Adjusted EPS of $0.68 A P P E N D I X 20 Performance Additives 15% Pigments 13% TiO2 9% Dyestuffs 2% Polyethylene 10%Nylon 5% Polypropylene 4% Styrenic Block Copolymer 4% Other Raw Materials 38% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials RAW MATERIAL BASKET SEGMENT DATA U.S. & Canada 41% EMEA 36% Asia 18% Latin America 5% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS Consumer 19% Packaging 23%Industrial 16% Building and Construction 9% Telecommunications 4% Energy 5% Defense 7% END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) Transportation 10% Healthcare 7% 22 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2 0 2 3 R E V E N U E | $ 2 . 0 B I L L I O N US & Canada 34% EMEA 37% Asia 21% Latin America 8% END MARKET REGION 23 Packaging 34% Consumer 21% Healthcare 8% Industrial 15% Transportation 9% Building & Construction 10% Telecommunications 1% Energy 2% COLOR, ADDITIVES & INKS 2 0 2 3 R E V E N U E | $ 1 . 1 B I L L I O N US & Canada 52% EMEA 35% Asia 13% 24 Packaging 5% Consumer 16% Healthcare 6%Industrial 16% Transportation 12% Telecommunications 9% Energy 10% Defense 18% Building & Construction 8% END MARKET REGION SPECIALTY ENGINEERED MATERIALS Packaging 32% Consumer 26% Healthcare 9% Industrial 13% Building & Construction 6% Telecommunications 2% Energy 2% Defense 1% Asia (18% of sales) Transportation 9% 2 0 2 3 AV I E N T R E G I O N A L S A L E S Packaging 25% Consumer 13% Healthcare 5% Industrial 18% Building & Construction 9% Energy 5% Defense 8% EMEA (36% of sales)Transportation 13% Packaging 13% Consumer 22% Healthcare 10% Industrial 16% Building & Construction 12% Energy 6% Defense 8% US & Canada (41% of sales) Transportation 9% Packaging 59% Consumer 22% Healthcare 2% Industrial 8% Building & Construction 4% LATAM (5% of sales) Transportation 5% Telecommunications 4% Telecommunications 4% 25 B Y E N D M A R K E T 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.