They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. Pro Forma Financial Information The Company acquired Avient Protective Materials (“Dyneema”) on September 1, 2022 (the “Acquisition Date”) and sold the Distribution segment on November 1, 2022. 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.

Our mission is to become the world’s premier provider of specialized polymer materials, services and solutions, as we execute our proven four-pillar strategy of Specialization, Globalization, Commercial Excellence and Operational Excellence. now Silicor Materials Inc.), a solar silicon company, from August 2010 to 2011. Our proxy materials for the 2018 Annual Meeting will be mailed on or about March 29, 2018.

company-owned vehicles, process emissions, and on-site heating) Scope 2: Indirect emissions from purchased indirect sources, such as the production of electricity and steam for an organization’s use Scope 3: Indirect emissions from sources up and down the supply chain, including materials, transportation of goods, and the processing, use, and end-of-life treatment of sold products Cradle-to-Gate: Carbon impact of a product from raw materials and product manufacturing Cradle-to-Grave: Carbon impact and analysis across the entire life cycle of a product from raw materials to disposal © 2023 Avient • www.avient.com • 1.844.4AVIENT Raw Materials Supply Chain UNDERSTANDING CARBON FOOTPRINT CO2e Transportation End-of-Life Treatment Processing of Goods Use of Products Transportation Chemical Processing Cradle-to-Gate (B2B) Cradle-to-Grave (B2C) SCOPE 3 INDIRECT SCOPE 3 INDIRECT Electricity Steam Company Facilities Company-Owned Vehicles SCOPE 1 DIRECT SCOPE 2 INDIRECT Reporting CompanyUpstream

Vinod Purayath is Senior Vice President and Chief Technology Officer of Avient Corporation, a premier provider of specialized and sustainable material solutions and services. Purayath has achieved global success in materials development, with a particular emphasis on semiconductor and digital memory applications. Purayath later joined Applied Materials, as the technology leader for its new Selective Removal Products business, and most recently served as Vice President, Process Technology for SunRise Memory.

Ready for testing, the new material was subjected to rigorous environmental testing, including months of sun exposure and long-term placement in humidity-rich environments. Beyond grip, the non-abrasive material doesn’t peel up thanks to a durable bond with the adhesive backing, giving customers a reliable solution that eliminates the problem of a slippery surface. Adding to that success, the material’s ability to retain traction when wet opened doors for SurfCo to expand into new markets and applications.

Our technical and application development teams will work with you to provide material selection support and product customization to achieve your performance needs. Available in rolls of unidirectional tape as well as X-Ply™ 0°/90° and other multi-ply laminates, Polystrand materials can be post- formed and co-molded with mixed materials in thermoforming and injection molding processes to provide lightweight strength to a variety of part designs. Processing conditions can cause material properties to shift from the values stated in the information.

Flame-retardant technology uniquely embedded into the panel materials provides robust and durable fire performance without the need for additional sheets or coatings. Weighing significantly less than traditional materials like wood, drywall, and framed wall assemblies, they enable easier and faster installation. Processing conditions can cause material properties to shift from the values stated in the information.

Any samples or developmental material provided by Seller are provided for testing only with no warranty as to its performance and such samples or materials shall not create any warranty by sample, which is hereby waived. The sale of Products or the providing of samples or developmental material shall not, by implication or otherwise, convey any license under any intellectual property right relating to the compositions and/or applications of the Products, sample, or developmental material, as applicable. Buyer shall not use Seller’s name or trademarks in any advertisements, product descriptions, packaging materials, websites, or any other promotional materials, except with the prior written consent of Seller. 18.

LEADING ANTENNA MANUFACTURER A N T E N N A C O M P O N E N T S • Extremely tight performance tolerance • Dielectric performance of 3 – 7Dk • Ability to utilize existing injection molding machinery • High mold flow index (MFI) • On demand material delivery • Provided technical support throughout the development of multiple, highly technical materials • Formulated high quality materials that aligned with stringent specification, at a cost effective price • Provided order flexibility, allowing customer to order on demand • Collaborated across the supply chain, enabling customer to take a premium solution to market that can reduce maintenance and construction costs for end users Custom PREPERM™ Low-Loss Dielectric Formulations KEY REQUIREMENTS WHY AVIENT?

ENERGY STORAGE OEM A Q U E O U S B A T T E R Y G A S K E T • Sealing performance from -40 to 110°F • Ability to flow in a long, thin seal design • Chemical resistance to a proprietary electrolyte solution • Natural color • Provided a chemically resistant TPE that outperformed competitive TPE and thermoplastic rubber in rigorous customer testing • Offered material expertise and education to empower an informed material decision • Enabled OEM to model and evaluate sealing performance via design support and data files • Met global production needs through material consistency and local technical support Dynaflex™ Thermoplastic Elastomer KEY REQUIREMENTS WHY AVIENT?