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.

PE Tarpaulin manufacturer PP MULTI- FILAMENT MANUFACTURER O U T D O O R C H A I R • Resist UV light degradation in U.S. & European climates for an extended period • Maintain color stability and resist brittleness for a minimum of 3 years • Reliable supplier with good product quality and stable supply • Offered a UV stabilizer for PP multi-filament yarn • Delivered good light fastness • Provided cost effectiveness by combining colorant and UV additive solutions • Had in-house Q-Lab UV (QUV) tester to meet strict customer standards Smartbatch Combination Colorants & Additives KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/products/polymer-colorants/color-additive-combination-masterbatches/smartbatch-combination-colorants-additives Slide 1: Pp Multi-filament manufacturer

N-COOL GRAY 3C (PPR-17) RECYCLE BLUE FDA PP FR 8-6 LMS-1000

STAN-TONE HCC-22333 DARK GRAY Recycle Internal Processing - No Bill PP FR 8-6 LMS-1000

UV STABILIZER/COLOR COMBINATIONS • Combines color and UV stabilization for use in PP and PA • Ingredients screened with accelerated weather testing* • Excellent weather resistance properties (against chalking, embrittlement) • Long-term colorfastness and light stability UV STABILIZER/FLAME RETARDANT/ COLOR COMBINATIONS • Combines low halogen flame retardants, UV stabilizers and color for use in PP and PA • Ingredients screened with accelerated weather testing* • Excellent weather resistance properties (against chalking, embrittlement) • Compliant with local fire standards (e.g.: AFNOR M 2 in France, DIN 4102 B 2–B 1 in Germany, UNI 8457–9174 C 1 in Italy, BKZ 5.2 in Switzerland, BS 5852.1990 CRIB 3–5 in UK)** • Standard portfolio available for PP injection molded applications APPLICATION BULLETIN * Laboratory weathering testing may not be determinative of all conditions of use; the end user must determine suitability of a product for its intended use ** Contact us for more information on regulatory compliance Copyright © 2022, Avient Corporation. This literature shall NOT operate as permission, recommendation, or inducement to practice any patented invention without permission of the patent owner. 1.844.4AVIENT www.avient.com STANDARD COLOR PORTFOLIO FOR INJECTION MOLDED PP SEATS Colors may vary from actual color shown.

https://www.avient.com/sites/default/files/2023-11/Cesa Fiber Additives Hydrophobic for PP Nonwovens Product Bulletin.pdf Slide 1: Medical textile manufacturer

Enhances recyclability: Improves the ability of materials to be recycled (e.g., improved properties, color, etc.). OnColor™ IR Sortable Black for Recyclable Packaging Allows previously non-recyclable black packaging to be detected, sorted and recycled by NIR equipment in waste management plants. Available in North America, injection-moldable reSound™ R VX TPEs utilize 25% (PCR) and up to 40 percent (PIR) recycled content, and both grades can be overmolded onto polypropylene (PP).

Gravi-Tech™ REC Recycled Formulations Maxxam™ REC Recycled Polyolefin Formulations Nymax™ REC Recycled Nylon Formulations

Gravi-Tech™ REC Recycled Formulations Maxxam™ REC Recycled Polyolefin Formulations Nymax™ REC Recycled Nylon Formulations