HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | IndexHOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 40Sustainability Report | 2023 40 https://www.avient.com/company/sustainability/sustainable-solutions-portfolio https://www.avient.com/company/sustainability/sustainable-solutions-portfolio https://www.avient.com/company/sustainability/sustainability-report/products/how-our-products-enable-sustainability Service Innovation Enables Quality Recycle Post-Consumer Recycle (PCR) Color Predictive Tool Innovation Award, Winner: Plastics Industry Association Product Technology Innovation, Winner: Plastics Recycling Awards Europe 2023 Product Innovation Enables PCR Claims + Low CO2 reSound™ Ultra-Low Carbon Footprint TPE Innovation Award, Finalist: Plastics Industry Association Rejoin™ 100% PCR Masterbatch Sustainable Packaging Innovation Finalist: U.S. HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 41 https://www.avient.com/resource-center/services/avient-color-prediction-service https://www.avient.com/products/thermoplastic-elastomers/resound-ultra-low-carbon-footprint-tpes https://www.avient.com/products/polymer-additives/antioxidant-additives/cesa-nox-a4r-additive-enhanced-recycling https://www.plasticsindustry.org/refocus-sustainability-innovation-awards-program/ https://www.prseventeurope.com/prse2024/en/page/2023-winners https://www.plasticsindustry.org/refocus-sustainability-innovation-awards-program/ https://usplasticspact.org/ https://www.plasticsindustry.org/refocus-sustainability-innovation-awards-program/ https://www.prseventeurope.com/prse2024/en/page/2023-winners RENEW Avient’s portfolio of RENEW solutions are designed to advance the circular economy. Does not include renewable energy credits from Virtual Power Purchase Agreements (3) Increase due to capture of all relevant Scope 3 data from APM acquisition (4) Certificates can be found at https://www.avient.com/company/policies-and-governance/global-iso-certificate-library HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 78 https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report https://www.avient.com/company/policies-and-governance/global-iso-certificate-library INDEX HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 79 GRI Standards Content Index GRI Standard Disclosure Title Avient Disclosures General Disclosures Organizational Profile 102–1 Name of the organization About Us—Who We Are 102–2 Activities, brands, products, and services Avient Technologies—Products Avient products are not banned in any market 102–3 Location of headquarters Avient 2023 Annual Report—Form 10-K Cover Page 102–4 Location of operations Where We Are: Global Locations Page 14 Avient 2023 Annual Report—Form 10-K Page 13 102–5 Ownership and legal form Avient 2023 Annual Report—Form 10-K Cover Page 102–6 Markets served About Us—Avient’s Support for Communities and Customers Page 15 Avient 2023 Annual Report—Form 10-K Page 13 102–7 Scale of the organization Avient 2023 Annual Report—Form 10-K Pages 2–7, 38–39 102–8 Information on employees and other workers Avient 2023 Annual Report—Form 10-K Page 5 People—Workforce Demographics Page 28 Currently we report on the number of associates.

HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | IndexHOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 40Sustainability Report | 2023 40 https://www.avient.com/company/sustainability/sustainable-solutions-portfolio https://www.avient.com/company/sustainability/sustainable-solutions-portfolio https://www.avient.com/company/sustainability/sustainability-report/products/how-our-products-enable-sustainability Service Innovation Enables Quality Recycle Post-Consumer Recycle (PCR) Color Predictive Tool Innovation Award, Winner: Plastics Industry Association Product Technology Innovation, Winner: Plastics Recycling Awards Europe 2023 Product Innovation Enables PCR Claims + Low CO2 reSound™ Ultra-Low Carbon Footprint TPE Innovation Award, Finalist: Plastics Industry Association Rejoin™ 100% PCR Masterbatch Sustainable Packaging Innovation Finalist: U.S. HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 41 https://www.avient.com/resource-center/services/avient-color-prediction-service https://www.avient.com/products/thermoplastic-elastomers/resound-ultra-low-carbon-footprint-tpes https://www.avient.com/products/polymer-additives/antioxidant-additives/cesa-nox-a4r-additive-enhanced-recycling https://www.plasticsindustry.org/refocus-sustainability-innovation-awards-program/ https://www.prseventeurope.com/prse2024/en/page/2023-winners https://www.plasticsindustry.org/refocus-sustainability-innovation-awards-program/ https://usplasticspact.org/ https://www.plasticsindustry.org/refocus-sustainability-innovation-awards-program/ https://www.prseventeurope.com/prse2024/en/page/2023-winners RENEW Avient’s portfolio of RENEW solutions are designed to advance the circular economy. Does not include renewable energy credits from Virtual Power Purchase Agreements (3) Increase due to capture of all relevant Scope 3 data from APM acquisition (4) Certificates can be found at https://www.avient.com/company/policies-and-governance/global-iso-certificate-library HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 78 https://www.avient.com/company/sustainability/sustainability-report/reporting/cdp-climate-change-report https://www.avient.com/company/policies-and-governance/global-iso-certificate-library INDEX HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2023 79 GRI Standards Content Index GRI Standard Disclosure Title Avient Disclosures General Disclosures Organizational Profile 102–1 Name of the organization About Us—Who We Are 102–2 Activities, brands, products, and services Avient Technologies—Products Avient products are not banned in any market 102–3 Location of headquarters Avient 2023 Annual Report—Form 10-K Cover Page 102–4 Location of operations Where We Are: Global Locations Page 14 Avient 2023 Annual Report—Form 10-K Page 13 102–5 Ownership and legal form Avient 2023 Annual Report—Form 10-K Cover Page 102–6 Markets served About Us—Avient’s Support for Communities and Customers Page 15 Avient 2023 Annual Report—Form 10-K Page 13 102–7 Scale of the organization Avient 2023 Annual Report—Form 10-K Pages 2–7, 38–39 102–8 Information on employees and other workers Avient 2023 Annual Report—Form 10-K Page 5 People—Workforce Demographics Page 28 Currently we report on the number of associates.

These products are sold to over 6,000 custom injection molders and extruders who, in turn, convert them into plastic parts that are sold to end-users in a wide range of industries. General Manager, Custom Profile Compounds, The Geon Company, April 1998 to August 2000. These products are sold to over 6,000 custom injection molders and extruders who, in turn, convert them into plastic parts that are sold to end-users in a wide range of industries.

V I S I O N PolyOne Corporation 4 To be the world’s premier provider of specialized polymer materials, services and solutions C O R E V A L U E S P E R S O N A L V A L U E S Honesty IntegrityRespect Operational Excellence Commercial Excellence Specialization Globalization Collaboration ExcellenceInnovation To be the world’s premier provider of specialized polymer materials, services and solutions S A F E T Y F I R S T PolyOne Corporation 5 1.3 1.1 1.1 0.85 0.65 0.57 0.54 0.97 0.84 0.74 0.74 0.69 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 Injuries per 100 Workers Spartech Acquisition PolyOne Corporation 6 P O L Y O N E 2 0 1 7 R E V E N U E | $ 3 . 2 B I L L I O N Transportation 18% Industrial 16% Consumer 12% Packaging 11% Healthcare 11% Wire & Cable 9% Appliance 5% United States 59% Europe 14% Asia 10% Latin America 9% Canada 8% PolyOne Distribution 34% Performance Products & Solutions 21% Specialty Engineered Materials 19% Color Additives & Inks 26% Segment End Market Geography Building & Construction 12% Electrical & Electronics 6% 2009 2010 2011 2012 2013 2014 2015 2016* 2017* P R O O F O F P E R F O R M A N C E C O N S E C U T I V E Y E A R S PolyOne Corporation 7 8 $0.13 $0.68 $0.82 $1.00 $1.31 $1.80 $1.96 $2.06 $2.21 *Pro Forma for sale of DSS 2006 2017 “Where we were” “Where we are” ROIC** 5.0% 14.0% Operating Income % of Sales Color, Additives & Inks 1.7% 15.5% Specialty Engineered Materials 1.1% 12.1% Performance Products & Solutions 4.3% 10.7% Distribution 2.6% 6.3% **ROIC is defined as TTM adjusted OI after tax divided by the sum of average debt and equity less cash over a 5 quarter period A D J U S T E D E P S E X P A N S I O N S U S T A I N A B L E P A T H T O D O U B L E - D I G I T E P S G R O W T H PolyOne Corporation 8 P E O P L E P R O D U C T S P L A N E T P E R F O R M A N C E Double digit annual EPS growth Expand specialty portfolio with strategic acquisitions Innovate and develop new technologies and services Repurchase 600K-1M shares annually Increase commercial resources 6-8% annually Double acquired company margins Enhance efficiencies through Lean Six Sigma and commercial excellence 531 680130 153 504 618 2014 Q1 2018 R&D / Technical Marketing Sales PolyOne Corporation 9 Increased commercial headcount + 28% + 18% + 23% Generating opportunities 35% more sales calls 25% more marketing campaigns 1,000 new customers, expanding customer base by 5% $1.0B increase in new opportunities Enhancing efficiency 8% reduction of average territory size, enabling greater customer focus 20% more prospecting calls I N V E S T M E N T I N COMMERCIAL RESOURCES D R I V I N G G R O W T H Lead Specialists T H E E V O L V I N G C U S T O M E R R E L A T I O N S H I P PolyOne Corporation 10 Expanded Path Traditional Path Strategic Accounts/ Field Sales Business Development Customer Service Web and Social Media Inside Sales PolyOne Corporation 11 Investments in digital and dedicated inside sales to improve customer experience 80% increase in leads (from 6,000 to 11,000) driven by website, phone, and online chat EXPANDED PATH A D D I N G C U S T O M E R T O U C H P O I N T S 4 21 2014 2017 Inside sellers $11M $88M 2014 2017 Inside sales/digital revenue N E W R E S O U R C E S F U E L I N G T H E F U T U R E PolyOne Corporation 12 P O L Y O N E S A L E S F U N N E L +34% 2014 $3.0 billion 2017 $4.0 billion A L I G N I N G W I T H T R E N D S F O R G R O W T H T R A N S P O R T A T I O N P A C K A G I N G H E A L T H C A R E C O N S U M E R PolyOne Corporation 13 Facilitate alternative energy solutions Light- weighting Reduce packaging materials Improve recyclability Reduce spread of infection I N N O V A T I O N PolyOne Corporation 14 Customization 55% M&A 30% Innovation Pipeline 15% Innovation comes from Research & Development Spend ($ millions) Vitality Index % of sales from products launched last 5 years 12% 38% 2006 2017 $20 $52 2006 2017 Transformational Opportunity for Growth Through M&A Adjacent Opportunity for Growth Through New Product Pipeline Core Customization 3 H O R I Z O N S O F D E V E L O P M E N T PolyOne Corporation 15 Incremental development from existing base of technology New development adjacent to current technology New technology development outside of and with our current base Service adjacent markets and customers Create new markets, target new customer needs Service existing markets and customers Market Technical I N N O V A T I O N Non-Halogen Flame Retardants Barrier Technologies Fiber Colorants Advanced Composites Thermoplastic Elastomers Gordon Composites/ Polystrand – Composites GLS – Thermoplastic Elastomers ColorMatrix – Liquid Color & Additives I N N O V A T I O N P I P E L I N E PolyOne Corporation 16 PrototypeFrame Opportunity Scale-up & Test Market Build Business Case Commercial Launch (since 2015) Phase 1 Phase 2 Phase 3 Phase 4 Phase 5 8 5 6 2 1 15 4 10 5 11 4 5 7 Breakthrough Platform Derivative Number of Projects 26 16 20 15 2 79 Total Addressable Market ($ millions) - - $1,230 $1,170 $440 $2,840 F L A M E R E T A R D A N T P O L Y M E R S A D V A N C E D C O M P O S I T E S B A R R I E R M A T E R I A L S C O L O R A N T T E C H N O L O G I E S T H E R M O P L A S T I C E L A S T O M E R S I N N O V A T I O N S P O T L I G H T : C O M P O S I T E S PolyOne Corporation 17 C O M P O S I T E S R E F R E S H E R PolyOne Corporation 18 Fiber Polymer Composite Strength Design Flexibility Continuous Fiber Thermoset Composites Short Glass Fiber Thermoplastics Continuous Fiber Thermoplastic Composites Long Glass Fiber Thermoplastics S T R A T E G I C I N V E S T M E N T H I S T O R Y PolyOne Corporation 19 Acquired Polystrand Installed LFT production Avon Lake Long Fiber Thermoplastic (LFT) Technology Installed LFT production Barbastro, Spain Acquired Glasforms Acquired Gordon Composites Thermoplastic Composites Long Fiber Reinforced Thermoplastics Continuous Fiber Thermosets 2010 2012 2015 2016 20162009 20122011 2014 C O M P O S I T E S I N T R A N S P O R T A T I O N PolyOne Corporation 20 W A T E R C R A F TR A I L H E A V Y T R U C K Bulkheads and Transoms Ceilings and Hatches Doors and Cabinetry Flooring Door Panels Side Walls Flooring & Side Panels Aerodynamic Fairings Seat and Bunk Reinforcements PolyOne Corporation 21 Safety Technology Geography Service FinancialPeople Low EH&S risk profile New and complementary technologies Leverage our global footprint Strong customer relationships Foundational operating margins of 8-10% with ability to double Motivated team with a specialty culture I N V E S T - T O - G R O W M & A S T R A T E G Y PolyOne Corporation 22 Capture sourcing synergies Cross-sell & blend technology 8-10% operating margins I N V E S T - T O - G R O W M & A P L A Y B O O K Protect customers Retain employees Implement LSS to drive efficiency improvements Innovate with combined portfolio Safety First!

Customer-focused integration of Magenta Colorants and TPE assets acquired from Kraton well underway; contributes $0.01 to EPS in the first quarter Underlying growth of 4% plus the acquired revenue from Magenta and Kraton's TPE business led to a sales increase of 5%. 

These products are sold to over 6,000 custom injection molders and extruders who, in turn, convert them into plastic parts that are sold to end-users in a wide range of industries. On January 29, 2016, the Company completed the acquisition of certain technologies and assets from Kraton Performance Polymers, Inc (Kraton), to expand its global footprint and expertise in the thermoplastic elastomer (TPE) innovation and design, for $72.0 million in cash. These products are sold to over 6,000 custom injection molders and extruders who, in turn, convert them into plastic parts that are sold to end-users in a wide range of industries.

TPEs that are ideal for healthcare, consumer goods and cutting-edge electronics such as wearables

These products are sold to over 5,700 custom injection molders and extruders who, in turn, convert them into plastic parts that are sold to end-users in a wide range of industries. General Manager, Custom Profile Compounds, The Geon Company, April 1998 to August 2000. These products are sold to over 5,700 custom injection molders and extruders who, in turn, convert them into plastic parts that are sold to end-users in a wide range of industries.

Through these investments, we have significantly increased the overall earnings and margin profile of the company, which will lead to long-term value creation."

LEARN MORE HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2022 48 https://www.avient.com/industries/energy/alternative-energy https://www.dyneema.com/our-products/dyneema-fiber/dyneema-max-technology https://www.avient.com/products/advanced-composites/pultrusion-and-continuous-filament-winding-technology/glasforms-pultruded-rods-tubes-custom-profiles https://www.avient.com/products/polymer-additives/processing-enhancement-additives/cesa-additives-polyolefin-films https://www.avient.com/products/engineered-polymer-formulations/flame-retardant-formulations/syncure-xlpe-cross-linkable-polyethylene-formulations https://www.avient.com/products/polymer-colorants/color-additive-combination-masterbatches/smartbatch-combination-colorants-additives https://www.avient.com/company/sustainability/sustainability-report/products/markets https://www.dyneema.com/applications/ropes-lines-slings-chains/offshore-wind-projects Telecommunications Market Needs: Durability, Consistency, Design Flexibility In this rapidly evolving industry, the need for faster and more reliable technology is stronger than ever. continues on next page) Adjusted EBITDA from Specialty Applications % o f A d ju st e d E B IT D A Commodity JV’s Performance Products & Solutions Distribution Specialty Businesses Specialty Transformation Expands Margin Profile (1) Pro forma for the acquisition of Clariant Color (2) Pro forma for the acquisition of APM and divestiture of Distribution 0% 20% 40% 60% 80% 100% 2005 2010 2015 2020PF(1) 2022PF(2) 7% 46% 66% 87% 100% Adjusted EBITDA Margins ��� ��� ��� ���� ���� 16.2% 11.5% 5.4% 2006 2018 2022PF(2) HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | IndexHOME | Contents | Message from the CEO | About Us | People | Products | Planet | Performance | Metrics | Index Sustainability Report | 2022 74Sustainability Report | 2022 74 https://www.avient.com/company/policies-and-governance/code-conduct Performance Overview (continued from previous page) With the acquisition of Dyneema®, the world’s strongest fiber, and divestiture of Distribution, 2022 was a pivotal and progressive year for Avient and our vision to be a world-class, sustainable organization. And our investments in innovation, composites, and sustainable solutions has significantly increased the overall earnings profile of the company, which will lead to long-term value creation for our company.