Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets. 2 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 4 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 5 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 15 Avient Confidential 16 • 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 16 …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 17 AP P EN D IX 20 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. 22 3 2 3 3 4 4 3 3 4 5 5 7 8 8 FREE CASH FLOW CONVERSION Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA.

This reduction in energy consumption can not only cut costs, but it can also lower the carbon footprint of the manufacturing process. Reduced Carbon Footprint: Using recycle-enabling process aids can lower the energy consumption of the bottle-blowing process, thereby reducing the carbon footprint of the entire packaging lifecycle.

This reduction in energy consumption can not only cut costs, but it can also lower the carbon footprint of the manufacturing process. Reduced Carbon Footprint: Using recycle-enabling process aids can lower the energy consumption of the bottle-blowing process, thereby reducing the carbon footprint of the entire packaging lifecycle.

Some of the changes that will come into force as a result include the expansion of the deposit system to all non-returnable plastic beverage bottles, with non-carbonated fruit juice packaging joining carbonated drinks packaging in the scheme. SmartHeat RHC also allows for a reduction in energy during the bottle blowing process, helping to reduce carbon emissions.

Some of the changes that will come into force as a result include the expansion of the deposit system to all non-returnable plastic beverage bottles, with non-carbonated fruit juice packaging joining carbonated drinks packaging in the scheme. SmartHeat RHC also allows for a reduction in energy during the bottle blowing process, helping to reduce carbon emissions.

Some of the changes that will come into force as a result include the expansion of the deposit system to all non-returnable plastic beverage bottles, with non-carbonated fruit juice packaging joining carbonated drinks packaging in the scheme. SmartHeat RHC also allows for a reduction in energy during the bottle blowing process, helping to reduce carbon emissions.

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 

Replacing Aluminum with Long Fiber Thermoplastics (LFT) Key factors and comparisons to consider when replacing aluminum with long-fiber-reinforced thermoplastic (LFT); including processing and material performance summaries Avient Solutions for Optical Fiber Cable

Polystrand™ PETG continuous fiber reinforced composite laminate thermally bonded to steel door skin ECCOH 6154 for Optical Fiber Cable Improved processing speeds & greater gel resistance for optical fiber cables

Learn more about moisture resistant nylon long fiber reinforced composites Cesa™ Fiber Tracer Concentrates Learn more about the applications and key benefits of Cesa Fiber Tracer Concentrates