Government Investigations and Inquiries From time to time, the Company may receive an inquiry from a government agency or entity. Competition Avient strives to earn business based on superior products, services and performance. Avient makes fair and fact-based comparisons of product performance.

CONCRETE REINFORCEMENT I N F R A S T R U C T U R E R E P A I R • Alternative to steel for reduced weight and improved corrosion resistance • Surface modification capabilities to improve concrete adhesion • Superior strength-to-weight ratio • Durable, long-lasting performance to extend service life • Provided peel ply and other surface modification capabilities that comply with specific CA regulations and allowed for better adhesion with concrete • Performed with higher strength-to-weight ratio than typical steel alternatives • Prolonged service life by resisting corrosion and dampening vibration Glasforms™ Carbon Fiber Composites KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION METAL REPLACEMENT LEARN MORE Copyright © 2021, Avient Corporation. https://www.avient.com/products/advanced-composites/pultrusion-and-continuous-filament-winding-technology/glasforms-pultruded-rods-tubes-custom-profiles

By intersecting our broad portfolio of technologies with the product roadmaps of our customers, we help create differentiated and high-performance products that make the world better and more sustainable. Our Strategic Approach is to intersect high growth markets and secular trends with our technologies to create product platforms of scale. Annual Report | 2024 2 STOCK EXCHANGE LISTING Avient's Common Stock is listed on the New York Stock Exchange, Symbol: AVNT SHAREHOLDER INQUIRIES If you have any questions concerning your account as a shareholder, name or address changes, inquiries regarding stock certificates, or if you need tax information regarding your account, please contact our transfer agent: Equiniti Trust Company, LLC 1110 Centre Pointe Curve, Suite 101 Mendota Heights, MN 55120-4100 Phone: 1-855-598-2615 or 1-651-450-4064 www.shareowneronline.com Additional information about Avient, including current and historic copies of Annual Reports on Form 10-K and other reports filed with the Securities and Exchange Commission, is available online at www.avient.com or free of charge from: Investor Relations Avient Corporation 33587 Walker Road Avon Lake, Ohio 44012 Phone: 1-440-930-1000 ANNUAL MEETING The annual meeting of Avient will be held virtually via live webcast at 9:00 a.m.

Avon Lake, OH 44012 P: +1 (440) 930-3000 I: +1 (866) 737-2066 F: +1 (440) 930-3064 Dear Valued Customer: Thank you for your inquiry regarding the quality system at PolyOne. Thank you again for your inquiry. On approval of the product and placement of an order, this data is extended to the plant that will produce the product.

Copyright © 2023, Avient Corporation. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application. https://www.avient.com/products/polymer-additives/performance-enhancement-additives/oncap-scratch-mar-resistance-additives https://www.avient.com/products/polymer-additives/uv-and-light-blocking-additives https://www.avient.com/products/advanced-composites/pultrusion-and-continuous-filament-winding-technology/glasforms-continuous-filament-wound-tubes-poles https://www.avient.com/products/advanced-composites/pultrusion-and-continuous-filament-winding-technology/glasforms-continuous-filament-wound-tubes-poles http://www.avient.com/products/screen-printing-inks http://www.avient.com/products/screen-printing-inks https://www.avient.com/products/engineered-polymer-formulations/structural-fiber-reinforced-formulations https://www.avient.com/products/engineered-polymer-formulations/structural-fiber-reinforced-formulations http://www.avient.com/products/polymer-colorants http://www.avient.com/products/polymer-colorants http://www.avient.com/products/polymer-additives http://www.avient.com/outdoor http://www.avient.com/outdoor

http://www.avient.com/composites Copyright © 2023, Avient Corporation. Avient makes no warranties or guarantees respecting suitability of either Avient’s products or the information for your process or end-use application. AVIENT MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, either with respect to the information or products reflected by the information.

Automotive chassis components, body panels Medical splints, braces, orthopedic fixators Avient’s Glasforms™ and Gordon Composites™ carbon fiber composite materials consist of thermoset continuous fiber polymer rods, bars, laminates and custom shapes used in a variety of applications that require superior technical characteristics. For more details including technical information, download the product bulletin. MOVE OVER METAL Compared to steel, carbon fiber composites are: Tensile Strength 400–500 ksi Density 1.55 g/cm3 Concrete reinforcement, infrastructure repair BUST THE RUST Carbon fiber composites are inherently corrosion resistant, making them ideal for harsh outdoor applications MEET YOUR NEEDS Avient customizes composite materials to meet your specifications, from specialty surface treatments to finishing operations TAKE THE HEAT Carbon fiber composites have excellent dimensional stability to withstand extreme temperatures and conditions stronger 10X 5X lighter Archery bow limbs, risers, cable guards, arrows https://www.avient.com/products/advanced-composites/pultrusion-and-continuous-filament-winding-technology/glasforms-pultruded-rods-tubes-custom-profiles https://www.avient.com/products/advanced-composites/continuous-fiber-composite-tape-laminates-and-barstock/gordon-composites-thermoset-laminates-barstock https://www.avient.com/sites/default/files/2021-11/carbon-fiber-reinforced-product-bulletin.pdf

Glasforms™ Pultruded Rods, Tubes & Custom Profiles: for concrete reinforcement, infrastructure repair, and more  Avient is a proud sponsor of the Building Systems Council Lounge in the North Hall at N242 and will display Hammerhead FR Flame Retardant Panels in the New Product Zone located in the Central Hall at C1260. Explore Avient’s website for Hammerhead FR Flame Retardant Composite Panels, Polystrand Thermoplastic Composites, Ballistic Resistant Composite Panels, and Glasforms Pultrusions to learn more. 

Products Home // Sustainability // Sustainability at Avient // Products // Markets // Renewable Energy & Case Study Glasforms™ Pultrusion Technologies offer exceptional strength-to-weight ratio for continuous fiber reinforced composites for structural wind turbine components 

In certain cases throughout this presentation, we have presented GAAP and non-GAAP financial measures adjusted to reflect full- year 2012 Pro forma results, including Spartech and Glasforms and excluding discontinued operations Organic results, excludes Spartech and Glasforms results. Organic results, excludes Spartech and Glasforms results.