In 2022, we expanded our materials offering with the acquisition of the protective materials business of DSM, including the Dyneema® brand, the World’s Strongest Fiber™. HIGHLIGHTS from 2023: Key Markets Key Customer Challenges • Meet aggressive sustainability goals • Develop strategies to minimize plastic waste • Increase post consumer recycle (PCR) utilization and PCR availability • Meet legislation requirements Avient Solutions & Services • Solutions enabling increased use of PCR content • Specialty solutions incorporating recycle and biobased content • PCR Color Predictive Ser vice, enabling increased use of recycled content • Avient Design Ser vices to enable circular solutions LEARN MORE Avient Sustainability RENEW Packaging Consumer Transportation 35-60% BIO-RENEWABLE CONTENT reSound™ BIO Thermoplastic Elastomers LEARN MORE 35% LOWER CARBON EMISSIONS ColorMatrix™ SmartHeat™ RHC PCR Performance Additives LEARN MORE EXPANDS PCR USAGE Design for Recycling CycleWorks™ Center for Mechanical Recycling LEARN MORE 60% Nymax™ REC Recycled Nylon Formulations LEARN MORE RECYCLE CONTENT ENABLES 100% PCR UTILIZATION Cesa™ Nox A4R Additives for Enhanced Recycling LEARN MORE BIOBASED FIBER ENABLING 10-20% LIGHTER WEIGHT SOLUTIONS Dyneema® SB301 Biobased UD Fiber LEARN MORE 85% PCR Color Prediction Service Winner: Innovation Award, Plastics Industry Association & Product Technology Innovation, Plastics Recycling Awards Europe 2023 LEARN MORE OF CONSUMERS CHOOSE BASED ON COLOR 35-40% RECYCLED CONTENT reSound™ REC PCR TPE for Automotive Interiors LEARN MORE HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | Metrics | Index Sustainability Report | 2023 42Sustainability Report | 2023 42 https://www.avient.com/company/sustainability/sustainable-solutions-portfolio https://www.avient.com/products/thermoplastic-elastomers/resound-bio-thermoplastic-elastomers https://www.avient.com/products/polymer-additives/reheat-additives-pet/colormatrix-smartheat-rhc https://www.avient.com/resource-center/services/cycleworks-innovation-center-plastic-recycling https://www.avient.com/products/engineered-polymer-formulations/sustainable-formulations/nymax-rec-recycled-nylon-formulations https://www.avient.com/products/polymer-additives/antioxidant-additives https://www.dyneema.com/latest-news/dyneema-unveils-breakthrough-innovation https://www.avient.com/resource-center/services/avient-color-prediction-service https://www.avient.com/products/thermoplastic-elastomers/resound-rec-recycled-content-thermoplastic-elastomers REDUCE Avient’s portfolio of REDUCE solutions include design and materials solutions that enable customers to reduce weight, energy consumption and emissions. HIGHLIGHTS from 2023: Key Markets Key Customer Challenges • Improve fuel economy • Reduce energy consumption • Reduce carbon footprint • Lessening environmental impact Avient Solutions & Services • Specialty solutions designed to replace traditional materials (e.g. metal, wood) at lower weight • Alternative solutions to reduce emittance of volatile organic compounds • Lightweighting design and solutions to reduce material usage • Avient Design Ser vices to reduce weight or energy consumption REDUCE Consumer Transportation Building & Construction 20% LESS MATERIAL Lightweight Dashboards Hydrocerol™ Chemical Foaming Agents LEARN MORE REDUCES VOCs SmartBatch™ FX for Body & Trim Paint Replacement LEARN MORE 59% Air Cargo Nets Bio-Based Dyneema® Fiber LEARN MORE SUSTAINABLE DESIGN Design for Lightweighting Avient Design Services LEARN MORE LESS WEIGHT 60% EV Connectors Edgetek™ PKE Non-Halogen Flame Retardant Formulations LEARN MORE40% LED Lighting Components Therma-Tech™ Thermally Conductive Formulations LEARN MORE LESS CO 2 THAN NYLON LIGHTER THAN ALUMINUM LEARN MORE Avient Sustainability HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | Metrics | Index Sustainability Report | 2023 43Sustainability Report | 2023 43 https://www.avient.com/products/polymer-additives/foaming-agents/hydrocerol-chemical-foaming-agents https://www.avient.com/products/polymer-colorants/color-additive-combination-masterbatches/smartbatch-fx-paint-replacement-0 https://www.dyneema.com/sustainability/bio-based-dyneema-fiber https://www.avient.com/resource-center/services/avient-design https://www.avient.com/products/engineered-polymer-formulations/chemical-corrosion-resistant-formulations/edgetek-pke-polyketone-formulations https://www.avient.com/products/engineered-polymer-formulations/conductive-signal-radiation-shielding-formulations/therma-tech-thermally-conductive-formulations https://www.avient.com/company/sustainability/sustainable-solutions-portfolio PRESERVE Avient’s portfolio of PRESERVE sustainable solutions are designed to preser ve natural resources like water, protect human health and safety, and enable sustainable infrastructure.

In 2022, we expanded our materials offering with the acquisition of the protective materials business of DSM, including the Dyneema® brand, the World’s Strongest Fiber™. HIGHLIGHTS from 2023: Key Markets Key Customer Challenges • Meet aggressive sustainability goals • Develop strategies to minimize plastic waste • Increase post consumer recycle (PCR) utilization and PCR availability • Meet legislation requirements Avient Solutions & Services • Solutions enabling increased use of PCR content • Specialty solutions incorporating recycle and biobased content • PCR Color Predictive Ser vice, enabling increased use of recycled content • Avient Design Ser vices to enable circular solutions LEARN MORE Avient Sustainability RENEW Packaging Consumer Transportation 35-60% BIO-RENEWABLE CONTENT reSound™ BIO Thermoplastic Elastomers LEARN MORE 35% LOWER CARBON EMISSIONS ColorMatrix™ SmartHeat™ RHC PCR Performance Additives LEARN MORE EXPANDS PCR USAGE Design for Recycling CycleWorks™ Center for Mechanical Recycling LEARN MORE 60% Nymax™ REC Recycled Nylon Formulations LEARN MORE RECYCLE CONTENT ENABLES 100% PCR UTILIZATION Cesa™ Nox A4R Additives for Enhanced Recycling LEARN MORE BIOBASED FIBER ENABLING 10-20% LIGHTER WEIGHT SOLUTIONS Dyneema® SB301 Biobased UD Fiber LEARN MORE 85% PCR Color Prediction Service Winner: Innovation Award, Plastics Industry Association & Product Technology Innovation, Plastics Recycling Awards Europe 2023 LEARN MORE OF CONSUMERS CHOOSE BASED ON COLOR 35-40% RECYCLED CONTENT reSound™ REC PCR TPE for Automotive Interiors LEARN MORE HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | Metrics | Index Sustainability Report | 2023 42Sustainability Report | 2023 42 https://www.avient.com/company/sustainability/sustainable-solutions-portfolio https://www.avient.com/products/thermoplastic-elastomers/resound-bio-thermoplastic-elastomers https://www.avient.com/products/polymer-additives/reheat-additives-pet/colormatrix-smartheat-rhc https://www.avient.com/resource-center/services/cycleworks-innovation-center-plastic-recycling https://www.avient.com/products/engineered-polymer-formulations/sustainable-formulations/nymax-rec-recycled-nylon-formulations https://www.avient.com/products/polymer-additives/antioxidant-additives https://www.dyneema.com/latest-news/dyneema-unveils-breakthrough-innovation https://www.avient.com/resource-center/services/avient-color-prediction-service https://www.avient.com/products/thermoplastic-elastomers/resound-rec-recycled-content-thermoplastic-elastomers REDUCE Avient’s portfolio of REDUCE solutions include design and materials solutions that enable customers to reduce weight, energy consumption and emissions. HIGHLIGHTS from 2023: Key Markets Key Customer Challenges • Improve fuel economy • Reduce energy consumption • Reduce carbon footprint • Lessening environmental impact Avient Solutions & Services • Specialty solutions designed to replace traditional materials (e.g. metal, wood) at lower weight • Alternative solutions to reduce emittance of volatile organic compounds • Lightweighting design and solutions to reduce material usage • Avient Design Ser vices to reduce weight or energy consumption REDUCE Consumer Transportation Building & Construction 20% LESS MATERIAL Lightweight Dashboards Hydrocerol™ Chemical Foaming Agents LEARN MORE REDUCES VOCs SmartBatch™ FX for Body & Trim Paint Replacement LEARN MORE 59% Air Cargo Nets Bio-Based Dyneema® Fiber LEARN MORE SUSTAINABLE DESIGN Design for Lightweighting Avient Design Services LEARN MORE LESS WEIGHT 60% EV Connectors Edgetek™ PKE Non-Halogen Flame Retardant Formulations LEARN MORE40% LED Lighting Components Therma-Tech™ Thermally Conductive Formulations LEARN MORE LESS CO 2 THAN NYLON LIGHTER THAN ALUMINUM LEARN MORE Avient Sustainability HOME | Contents | Message from the CEO | About Us | People | Products | Planet | Per formance | Metrics | Index Sustainability Report | 2023 43Sustainability Report | 2023 43 https://www.avient.com/products/polymer-additives/foaming-agents/hydrocerol-chemical-foaming-agents https://www.avient.com/products/polymer-colorants/color-additive-combination-masterbatches/smartbatch-fx-paint-replacement-0 https://www.dyneema.com/sustainability/bio-based-dyneema-fiber https://www.avient.com/resource-center/services/avient-design https://www.avient.com/products/engineered-polymer-formulations/chemical-corrosion-resistant-formulations/edgetek-pke-polyketone-formulations https://www.avient.com/products/engineered-polymer-formulations/conductive-signal-radiation-shielding-formulations/therma-tech-thermally-conductive-formulations https://www.avient.com/company/sustainability/sustainable-solutions-portfolio PRESERVE Avient’s portfolio of PRESERVE sustainable solutions are designed to preser ve natural resources like water, protect human health and safety, and enable sustainable infrastructure.

On September 1, 2022 we acquired the Protective Materials business of DSM, the foundation of which is the renowned technology and globally admired brand of Dyneema®, the World’s Strongest Fiber™. Recent Developments APM Acquisition On September 1, 2022, the Company completed the acquisition of the DSM Protective Materials business, including the Dyneema® brand, the World's Strongest Fiber™. Indefinite-lived intangible assets primarily consist of the Dyneema, GLS, ColorMatrix, Gordon Composites, and Fiber-Line trade names.

Dyneema®, the world's strongest fiber™, enables unmatched levels of performance and protection for end-use applications, including ballistic personal protection, marine and sustainable infrastructure and outdoor sports

Our expanding portfolio of offerings includes colorants, advanced composites, functional additives, engineered materials, and Dyneema®, the world's strongest fiber™.

Dyneema®, the world's strongest fiber™, enables unmatched levels of performance and protection for end-use applications, including ballistic personal protection, marine and sustainable infrastructure and outdoor sports

Our expanding portfolio of offerings includes colorants, advanced composites, functional additives, engineered materials, and Dyneema®, the world’s strongest fiber™. Our innovations cover a broad range of products in several end markets, from insulator rods in power distribution to life saving vests and protective materials for the military and law enforcement agencies manufactured using Dyneema® fiber.

We now have what we believe to be the strongest portfolio offering in the history of the company with 100% of sales now being generated from specialty applications. 2022 Company highlights include: • Completed the acquisition of the DSM Protective Materials business ("APM"), including the Dyneema® brand, the World's Strongest Fiber™ (the "APM Acquisition"); • Completed the sale of our Distribution business for $950.0 million; • Full-year GAAP EPS from continuing operations was $0.90 in 2022, compared to $1.65 in 2021; • Increased pro forma adjusted EPS from continuing operations from $3.02 in 2021 (pro forma for the APM Acquisition and the sale of our Distribution business) to $3.04(1) in 2022; • Strong working capital performance to finish the year resulted in cash flow from operations of approximately $400 million for 2022; • Generated approximately $290 million(1) of free cash flow, paid down $950 million of debt and ended the year with a net debt-to-EBITDA leverage ratio of 2.9x(1); • Increased our dividend on an annualized basis by 4% to $0.99; the 12th consecutive year of annual increase; • Our injury incident rate was 0.51 (per 100 full-time workers per year) compared to the industry average of 3.40 in 2021; • Certified again as an ACC Responsible Care® organization for outstanding environmental, health, safety and security performance; and • Continued our journey of improving our culture: received our 4th certification as a Great Place to Work® by the Great Place to Work Institute, and the highest scores in the Company's history Examples include: • Dyneema®, the world's strongest fiber™, enables unmatched levels of performance and protection for end-use applications, including ballistic personal protection, marine and sustainable infrastructure and outdoor sports; • 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. Examples include: • Dyneema®, the world's strongest fiber™, enables unmatched levels of performance and protection for end-use applications, including ballistic personal protection, marine and sustainable infrastructure and outdoor sports; • 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.

Examples include: • Dyneema®, the world's strongest fiber™, enables unmatched levels of performance and protection for end-use applications, including ballistic personal protection, marine and sustainable infrastructure and outdoor sports; • Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy; PROXY SUMMARY 6 PROXY STATEMENT 2024 | Annual Meeting of Shareholders • 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 resources conservation and fiber optic / 5G network accessibility.

The analysis also informed acquisition of the protective materials business of DSM (including the Dyneema brand), now called Avient Protective Materials (APM). The policies informed its purchase of the protective materials business of DSM (including the Dyneema brand), which is now called as Avient Protective Materials (APM).