The scenario analysis will be complete and reported on in next year’s CDP disclosure. Also in 2021, Avient completed 207 energy saving activities that cumulatively reduce yearly emissions by 5,500 MT CO2e, hence reducing the company exposure to commodity fluctuations and regulatory changes. SC1.2 (SC1.2) Where published information has been used in completing SC1.1, please provide a reference(s).

Dans le cas où l'Acheteur aura failli à une quelconque obligation de payer pendant plus de quinze (15) jours, le Vendeur pourra : (i) retarder l'expédition de tout produit commandé par l'Acheteur jusqu'à complet paiement ; et (ii) demander à l'Acheteur le paiement immédiat de tout produit supplémentaire commandé par l'Acheteur avant tout envoi. 6. Buyer will accept, as full and complete performance by Seller, deliveries in accordance with such determinations as Seller may make.

Unless otherwise stated, Adjusted Operating Income, Adjusted EBITDA and Adjusted EPS figures included in this presentation exclude the impact of special items as defined in our quarterly earnings releases. 2 0 2 1 P E R F O R M A N C E $80 $85 2020 2021 $0.52 $0.58 2020 2021 Q4 2021 PERFORMANCE ( T O TA L C O M PA N Y ) 4 Sales Adjusted Operating Income $997 $1,202 2020 2021 + 21% Adjusted EPS + 6% + 12% (in millions) (in millions) $308 $429 2020PF 2021 $1.93 $3.05 2020PF 2021 FULL YEAR 2021 PERFORMANCE ( T O TA L C O M PA N Y ) 5 Sales Adjusted Operating Income $3,783 $4,819 2020PF 2021 + 27% Adjusted EPS + 39% + 58% (in millions) (in millions) (1) Financial information is pro forma to include a full year of Clariant Color business (1) (1) (1) FULL YEAR 2021 SEGMENT PERFORMANCE 6 CAI $2,043 $2,402 Sales ($ in millions) SEM Distribution $226 $303 Operating Income + 18% + 34% $1,110 $1,631 Sales $70 $93 Operating Income + 47% + 33% (1) $709 $919 Sales $94 $132 Operating Income + 30% + 40% (1) Financial information is pro forma to include a full year of Clariant Color business (1) Full Year 2020 (Pro forma) $3,783 $308 Sustainable Solutions 147 19% 60 Healthcare 143 28% 30 Composites 58 43% 29 Growth in Asia / LATAM 107 21% 26 Other 543 30% 58 Sub-total $4,781 26% $511 Wage Inflation and Overtime (39) Other Supply Chain Costs (15) COVID Response Applications (22) (12) Synergies 44 FX, Incentives, Other Employee Costs 60 (60) Full Year 2021 $4,819 27% $429 FULL YEAR 2021 SALES AND OPERATING INCOME ( T O TA L C O M PA N Y ) 7 Sales Growth Rate Adjusted Operating Income$ millions (1) Financial information is pro forma to include a full year of Clariant Color business (1) Adjusted EBITDA 8 Full Year 2020 (Pro forma) $ 457 Demand 135 $ millions CAI: Price / Mix 158 Inflation (120) SEM: Price / Mix 84 Inflation (65) Distribution: Price / Mix 318 Inflation (304) Net Price Benefit 71 Wage Inflation and Overtime (39) Other Supply Chain Costs (15) COVID Response Applications (12) Synergies 44 Incentives, FX, Other Employee Costs (60) Full Year 2021 $ 581    (1) Financial information is pro forma to include a full year of Clariant Color business (1) • Demand impact driven by growth in key focus areas: sustainable solutions, healthcare, composites and growth in Asia / LATAM • Price increases more than offset raw material and supply chain impacts FULL YEAR 2021 EBITDA BRIDGE SPECIALTY EBITDA MARGIN EXPANSION 9 CAI (1) 2018-2020 financial information is pro forma to include a full year of Clariant Color business 15.3% 15.2% 16.2% 17.0% 2018 2019 2020 2021 14.8% 15.2% 17.6% 17.8% 2018 2019 2020 2021 (1) SEM • Record margins in 2021 despite unprecedented supply chain challenges • Continued portfolio transformation to high-growth end markets and sustainable solutions • Clariant Color synergy realization • Investments in composites and outdoor high performance applications drove growth and mix improvements • Acquisition of Clariant Color business significantly expanded presence in healthcare, packaging and consumer end markets • Strength of portfolio – double-digit annual EBITDA growth since acquisition • $54 million of synergies realized in 2021 • Acquisition completed on 2020年7月1日 for $1.45 billion. Our free cash flow supports shareholder value creation through investing in R&D for organic growth, completing bolt-on acquisitions, and returning cash to shareholders via our dividend program and opportunistic share repurchases. 27 1.

Operating Income $3,783 $4,300 2020PF 2021E Adjusted EPS (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition Previous Guidance Current Guidance $3,783 $4,650 2020PF 2021E $308 $410 2020PF 2021E $308 $430 2020PF 2021E $1.93 $2.80 2020PF 2021E $1.93 $3.00 2020PF 2021E (1) (1)(1) (1)(1) (1) (in millions) (in millions) $442 $457 $580 2019PF 2020PF 2021E $1.74 $1.93 $3.00 2019PF 2020PF 2021E FULL YEAR 2019 – 2021 ORGANIC GROWTH ( T O TA L C O M PA N Y ) 16 Sales Adjusted EBITDA $3,981 $3,783 $4,650 2019PF 2020PF 2021E + 17% Adjusted EPS (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition (1) (1) (in millions) (in millions) (1)(1) + 31% + 72% (1) (1) ($ in millions) 2021E Adjusted EBITDA 580$ Free Cash Flow 280$ Total Debt 1,860 Less: Cash (755) Net Debt 1,105$ 2021E Net Debt / Adjusted EBITDA 1.9x 17 BA L A N C E S H E E T • Acquisition of Magna Colours completed on July 1 – expands sustainable solutions portfolio through water-based inks technology • Deleveraging to 1.9x net debt to adjusted EBITDA by the end of 2021 • Driven by record adjusted EBITDA performance and strong free cash flow generation from asset light business • Future cash deployment: M&A, opportunistic share repurchases and balance sheet / continued leverage reduction 3.5x 2.7x 1.9x 2019PF 2020PF 2021E Net Debt / Adjusted EBITDA (1) (1) (1) Financial information is pro forma to include a full year of Clariant Masterbatch business acquisition 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 18 • Revenue from sustainable solutions expected to grow 14% in 2021 as our innovation efforts and collaboration with customers continues to accelerate • 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 18 2016 2017 2018 2019 2020PF** Bio-polymers Reduced Energy Use Human Health & Safety Sustainable Infrastructure VOC Reduction Recycle Solutions Eco-Conscious Lightweighting Revenue From Sustainable Solutions* 2016-2020 $405M $455M *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 Masterbatch business $340M $550M $790M 18 19 Key Updates • Includes Clariant Masterbatch performance • Increases disclosures and ESG data • Provides performance updates on 2030 Sustainability Goals • Commits to operational carbon neutrality in 2050 and 100% renewable energy by 2050 (RE 100) • Announces Avient’s participation in U.N. Our free cash flow supports shareholder value creation through investing in R&D for organic growth, completing bolt-on acquisitions, and returning cash to shareholders via our dividend program and opportunistic share repurchases. 24 1.

That’s Avient. 21,000+ CUSTOMERS >75% ARE CUSTOMIZED SOLUTIONS TO UNIQUE SPECIFICATIONS of sales 5 In July 2020, we completed the acquisition of the Clariant Masterbatch business, the largest acquisition in the 20-year history of our company. Our free cash flow supports shareholder value creation through investing in R&D for organic growth, completing bolt-on acquisitions, and returning cash to shareholders via our dividend program and opportunistic share repurchases. 27 1.

That’s Avient. 21,000+ CUSTOMERS >75% ARE CUSTOMIZED SOLUTIONS TO UNIQUE SPECIFICATIONS of sales 5 In July 2020, we completed the acquisition of the Clariant Color business, the largest acquisition in the 20-year history of our company. Our free cash flow supports shareholder value creation through investing in R&D for organic growth, completing bolt-on acquisitions, and returning cash to shareholders via our dividend program and opportunistic share repurchases. 32 1.

That’s Avient. 21,000+ CUSTOMERS >75% ARE CUSTOMIZED SOLUTIONS TO UNIQUE SPECIFICATIONS of sales 5 In July 2020, we completed the acquisition of the Clariant Masterbatch business, the largest acquisition in the 20-year history of our company. Our free cash flow supports shareholder value creation through investing in R&D for organic growth, completing bolt-on acquisitions, and returning cash to shareholders via our dividend program and opportunistic share repurchases. 27 1.

Chantal Nestor-Saury, Product Development Manager Avient Corporation 48 Brand Commitment: Percent Recycled Plastic Used Demand by Feedstock Type 39% 29% 37% 16% 25% 11% 11% 6% 19% 7% 0% 10% 20% 30% 40% 50% Brand 1 Brand 2 Brand 3 Brand 4 Brand 5 Brand 6 Brand 7 Brand 8 Brand 9 Brand 10 Progr ess through 2022 Gap t o r ea ch 2025 targets Source: Ellen MacArthur Foundation 2022 2020 2030 12% CAG R Recycled Plastics Virgin Plastics3 % C AGR RENEW – TAKEAWAY Demand for Recycled Content Drives Growth Projections Examples Covered Today 55% Other Applications 45% 2022 $340M Source: McKinsey HOW WE ENABLE SUSTAINABILITY Reduce Chris Pederson Senior Vice President, President of Specialty Engineered Materials Avient Corporation 49 REDUCE Avient Corporation 50 KEY CUSTOMER CHALLENGES: • Improving Fuel Economy - Incorporating innovative lighter-weight alternative materials as a cost-effective way to reduce fuel consumption • Reducing Energy Consumption and Dependence on Fossil Fuels - Negative public perceptions of fossil fuels are challenging companies to utilize alternative energy sources and also to reduce overall demand (consumption) • Reducing Carbon Footprint - Companies are seeking assistance from their suppliers to address the ever-increasing pressure to reduce their carbon footprint • Lessening Environmental Impact - Manufacturers are looking to reduce dependence on processes with high environmental impact such as the release of Volatile Organic Compounds (VOCs) during painting Solutions to reduce weight and energy consumption Avient Corporation 51 Lightweight Dashboards Hydrocerol™ Chemical Foaming Agents • Reduces part weight • No impact on performance • Highly cost effective 20% LESS MATERIAL Automotive / EVs 2022 Revenue: $46M Body + Trim SmartBatch™ Paint Replacement • Reduces emission of volatile organic compounds (VOCs) REDUCES VOCs Protective Film Versaflex™ Protective Film • Protects new cars from damage during shipping • High-tack eliminates solvent containing adhesives Avient Corporation 52 LED Lighting Components ThermaTech™ Thermally Conductive Formulations • Reduces weight vs. aluminum • Removes heat – extends LED life • Will not corrode 40% LIGHTER THAN ALUMINUM Automotive / EVs 2022 Revenue: $3M REDUCES FUEL CONSUMPTION Running Boards, Side Steps Complēt™ Long Fiber Reinforced Structural Thermoplastics • High strength-to-weight • Replaces steel/aluminum • Excellent load carrying and fatigue resistance Avient Corporation 53 Battery Frame Maxxam™ Polyolefin Formulations • Critical stiffness and rigidity • Chemical and thermal performance • Replaces a heavier, aluminum frame 60% LIGHTER THAN ALUMINUM Design for Lightweighting Avient Design Services • Comprehensive design for sustainability capabilities • Materials agnostic • 10% reduction in weight increases range by 14% SUSTAINABLE DESIGN Automotive / EVs 2022 Revenue: $4M EV Battery Cooling System Versaflex™ Thermoplastic Elastomers • Thermal management • Chemically resistant • More efficient and longer life battery EXTENDS BATTERY LIFE Avient Corporation 54 EV Connectors Edgetek™ PKE Non-halogen flame retardant Formulations • Provides reduced carbon footprint alternative to traditional materials (Nylon) 66% LESS CO2 THAN NYLONCharging Cable Infrastructure ECCOH™ Wire and Cable Formulations • Low smoke, zero halogen • Flame resistance exceeds EVM1/EVL2 requirements ZERO HALOGEN Automotive / EVs 2022 Revenue: $2M Avient Corporation 55 Trailer Flooring Polystrand™ R Recycled PET Composite Tapes • Minimum 95% post-consumer recycle content • Improved carbon footprint without sacrificing performance 95% RECYCLED PET Aerodynamic Side Shield Polystrand™ Thermoplastic Composite Laminates • Can be post-formed • Reduces fuel consumption • High impact and fatigue resistance 60% LIGHTER Commercial Transportation, Aerospace 2022 Revenue: $8M Rail Car Doors Glasforms™ Composite Panels • Replaces steel • Will not corrode • Reduces weight LIGHT & DURABLE Air Cargo Nets Bio-based Dyneema® Fiber • Reduces fuel consumption • Extends product life from 3 to 5 years 59% LESS WEIGHT Arm Rests & Seat Frames Complēt™ Long Fiber Composites • Replaces steel • High strength-to-weight ratio LIGHT & STRONG Commercial Transportation, Aerospace 2022 Revenue: $8M Air Cargo Containers Polystrand™ Composite Sandwich Panels • Lighter and stronger than aluminum • Reduces fuel consumption 95% RECYCLE CONTENT Avient Corporation 56 Avient Corporation 57 Aquaculture/ Fishing Nets Dyneema® Fishing Net Fibers • High bite resistance – lowers maintenance costs and fish loss • Lighter weight reduces fuel consumption – allows for larger net sizes 60% LIGHTER THAN NYLON/ POLYESTER 70% LIGHTER THAN STEEL Lifting Slings Dyneema® Fiber • Facilitates heavy lift in harsh environments • Accredited by DNV GL, ABS, Bureau Veritas Mooring Lines Dyneema® Mooring Rope Fibers • Able to handle heavy loads common to modern shipping • Improves handling • Reduces dock worker injuries 2x SERVICE LIFE Marine Infrastructure 2022 Revenue: $41M Solar Power Station UV Solutions Smartbatch™ Combination Colorants • Protects solar power panels from UV weathering and outdoor exposure • Meets critical performance standards 10% ENERGY SAVINGS (VS.

We also completed the divestiture of Performance Products & Solutions (PP&S) and announced an agreement to acquire Clariant’s Masterbatch business. RISK PERCEPTION RISK TOLERANCE DECISION OR ACTION .56 Injury Rate 65% of sites worked injury-free 110% increase in consecutive days injury free in the last two years SAFETY FIRST 50% 0 70%20 43% Average number of risk assessments completed every day Reduction in lacerations since 2017 Reduction in ergonomic related injuries Automobile related injuries Reduction in acquisition injury rate 74424.indd main_3 3/16/20 12:25 PM Annual Report | 2019 4 W ith our focus on People, it has led to the creation and expansion of Employee Resource Groups (ERGs) at PolyOne to advance diversity and inclusion.

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