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.

Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy

Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy

They find their way to landfills instead of being recycled. We are continuously making a positive impact through our innovative portfolio of technologies that enable our customers to improve plastic recyclability and reduce the amount of material required for packaging.

Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy

Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy

Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy

Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy

Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy

Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy