WHAT WE DO: WE ARE A FORMULATOR 6 CUSTOM FORMULATION JU LY 27 , 2023 W EB CAS T P RE SE N TATI O N COMPOSITES PORTFOLIO D Y N E E M A ® E X P A N D S O U R E N G I N E E R E D F I B E R S A N D P A N E L S T E C H N O L O G Y LFT Tapes Laminates/Panels Shapes Pultrusion Engineered Fibers 8 DEFENSE TELECOMMUNICATIONS ENERGY TRANSPORTATION Military • Law Enforcement First Responders Body Armor • Helmets Vehicle Protection Sustainable Infrastructure Offshore Wind Electrical Grid Protection EV Battery Components Commercial Laminates Body & Trim • Air Cargo and Railroad Car Panels 5G Applications Fiber Optic Cables Satellite Communications Connectors and Components 9 COMPOSITES SERVE DIVERSIFIED END MARKETS INDUSTRIAL Lifting Slings • Aquaculture High Pressure Pipe Conveyer Springs Q 2 P ER FO RM A N CE Q2 2023 PERFORMANCE VS. Global Compact • Highlights ESG Performance, including ratings, awards, and certifications • Features increased carbon emissions disclosures, including Climate Change Scenario Analysis and Scope 3 emissions data • Outlines Sustainable Supplier Program, designed to enable supplier evaluation & collaboration • Reflects Great Place To Work® culture focused on safety, employee engagement and advancing diversity, equity and inclusion 2022 SUSTAINABILITY REPORT 19 Avient Confidential 20 • Virtual presentation to be held September 20, 2023 • Leadership will be conducting an investor-focused presentation around our sustainable solutions portfolio • Deep dive into how we enable customers to achieve their sustainability goals SUSTAINABILITY DAY 20 …are Growing at Twice the Rate as Conventional Products Sustainably-Branded Products… STAKEHOLDER INFLUENCE DRIVES DEMAND Consumers Are demanding recyclability and eco- conscious products Governments Are mandating changes through legislation, taxes, and regional accords Brand Owners Have committed to ambitious goals to achieve sustainability metrics 21 AP P EN D IX 24 Performance Additives 16% Pigments 12% TiO2 Dyestuffs 2% Polyethylene Nylon Polypropylene Styrenic Block Copolymer Other Raw Materials 33% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials 2022 pro forma results for the acquisition of Avient Protective Materials RAW MATERIAL BASKET PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Other Specialty / Note: Avient reflects 2023 estimated revenue of $3,280 and estimated run-rate CAPEX of $110M. 26 3 3 4 4 4 5 5 7 7 9 10 FREE CASH FLOW CONVERSION Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA.

Continuous fiber reinforced thermoplastic composite tape is slit to custom widths from 2" to 24" Fiber-Line Engineered Fibers - Products & Applications Fiber-Line™ engineered fiber solutions are designed to meet the most specific and demanding requirements

Continuous fiber reinforced thermoplastic composite tape is slit to custom widths from 2" to 24" Fiber-Line Engineered Fibers - Products & Applications Fiber-Line™ engineered fiber solutions are designed to meet the most specific and demanding requirements

Explore the unique capabilities of specialty long fiber reinforced composites Learn more about moisture resistant nylon long fiber reinforced composites Sustainable Fiber Coloration Technology (Spin-Dyeing)

Explore the unique capabilities of specialty long fiber reinforced composites Learn more about moisture resistant nylon long fiber reinforced composites Sustainable Fiber Coloration Technology (Spin-Dyeing)

Explore the unique capabilities of specialty long fiber reinforced composites Learn more about moisture resistant nylon long fiber reinforced composites Sustainable Fiber Coloration Technology (Spin-Dyeing)

OnColor™ RC Environmental Black Color Concentrate OnColor™ RC Environmental Black color concentrate is derived from end-of-life tires, making it sustainable alternative to concentrates using virgin carbon black. The use of OnColor RC Environmental Black helps reduce environmental impact compared to color concentrates formulated with traditional carbon black. KEY CHARACTERISTICS • Derived from end-of-life tires • Available for multiple resins and custom solutions • Retains performance characteristics of traditional carbon black in plastics • Enhances sustainable product offerings • Provides long-term price stability • Passes REACH and RoHS requirements • Prop 65 letters available MARKET AND APPLICATIONS OnColor RC Environmental Black is a sustainable solution across a wide variety of industries and applications, including: • Automotive • Wire and cable • Building and construction • Appliances • Electrical and electronics • Industrial molding applications • Office furniture Avient OnColor RC Environmental Black is offered for multiple resins and also for custom solutions: CC10289240WE OnColor RC Environmental Black PE CC10284887WE OnColor RC Environmental Black TPU CC10287020WE OnColor RC Environmental Black PC CC10287026WE OnColor RC Environmental Black PS CC10287028WE OnColor RC Environmental Black PP CC10287033WE OnColor RC Environmental Black ABS www.avient.com Copyright © 2020, Avient Corporation.

Cesa™ Fiber Additives for Heat Preservation (Traditional Chinese language version) Cesa™ Fiber Additives for Heat Preservation (Chinese) Moisture-resistant Complēt™ long glass fiber reinforced formulation improves strength, design freedom, and finish

Explore the unique capabilities of specialty long fiber reinforced composites Learn more about moisture resistant nylon long fiber reinforced composites Sustainable Fiber Coloration Technology (Spin-Dyeing)

Explore the unique capabilities of specialty long fiber reinforced composites Learn more about moisture resistant nylon long fiber reinforced composites Sustainable Fiber Coloration Technology (Spin-Dyeing)