USE OF NON-GAAP MEASURES PolyOne Corporation 3 • This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. Non-GAAP financial measures have limitations as analytical tools and should not be considered in isolation from, or solely as alternatives to, financial measures prepared in accordance with GAAP. Below is a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with GAAP.

PolyOne’s team worked with engineers at Halo Smart Labs to incorporate two Resilience LS materials that would meet tough UL flame requirements and improve light distribution without disrupting the initial design parameters. Resilience LS options include both housing and reflector materials that meet strict UL regulations up to 5VA for flame retardancy, and long term color stability to provide many years of lasting color.

Additive functionalities include antioxidants, UV stabilizers and flame retardants. 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 FLAME RETARDANTS Flame retardants are recommended for water supply in firestopping systems. Avient’s flame retardants can be combined with color in a single product for convenience—e.g. the standard red color typically used for fire sprinkler systems.

USE OF NON-GAAP MEASURES PolyOne Corporation 3 • This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. Non-GAAP financial measures have limitations as analytical tools and should not be considered in isolation from, or solely as alternatives to, financial measures prepared in accordance with GAAP. Below is a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with GAAP.

For more on material solutions for snowmobiles, visit avient.com © 2025, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 EXTENDED PERFORMANCE Minimize Moisture Uptake from Melted Snow SOLUTION: Moisture-Resistant Long Fiber Reinforced Composites, Corrosion-Resistant Additives TACTILE EXPERIENCE Soft Touch Feel, Durable Performance, Lower Thermal Conductivity than Metals SOLUTION: Thermoplastic Elastomers (TPEs), Long Fiber Reinforced Composites THERMAL MANAGEMENT & SAFETY Heat Dissipation, Design Flexibility, Flame Retardancy SOLUTION: Thermally Conductive Formulations, Flame Retardant Additives HIGH IMPACT DURABILITY High Strength-To-Weight Ratio, Elevated and Low Temperature Performance SOLUTION: Long Carbon Fiber Reinforced Composites, Continuous Fiber Reinforced Thermoplastic Tape & Laminates COLD TEMPERATURE PERFORMANCE Cold Temperature Flexibility and Toughness SOLUTION: Thermoplastic Elastomers (TPEs), Long Fiber Reinforced Composites, Impact Modifiers WEIGHT REDUCTION 40–50% Lightweighting Compared to Metal, Exceptional Structural Properties, Extremely High Stiffness and Strength from -40° to 160°F SOLUTION: Long Carbon Fiber Reinforced Composites, Chemical Foaming Agents AESTHETIC APPEAL Custom Color and Special Effects, Paint Replacement, Color Fade Protection SOLUTION: Custom Polymer Colorants, UV Blocking Additives, Antioxidant Additives, Molded-In-Color Metallics, Scratch and Mar Performance, Laser Marking, Pre-Colored High-Gloss Thermoplastics https://www.avient.com/industries/consumer/consumer-discretionary/outdoor-recreation/powersports https://www.avient.com/products/long-fiber-technology/complet-moisture-resistant-nylons https://www.avient.com/products/polymer-additives/corrosion-resistant-additives/cesa-cor-additives https://www.avient.com/products/thermoplastic-elastomers/versaflex-thermoplastic-elastomers https://www.avient.com/products/long-fiber-technology https://www.avient.com/products/engineered-polymer-formulations/conductive-signal-radiation-shielding-formulations/therma-tech-thermally-conductive-formulations https://www.avient.com/products/polymer-additives/colorants-and-additives-wire-cable/cesa-flame-retardant-additives https://www.avient.com/products/long-fiber-technology/complet-long-carbon-fiber https://www.avient.com/products/advanced-composites/continuous-fiber-composite-tape-laminates-and-barstock/polystrand-continuous-fiber-tapes-laminates https://www.avient.com/products/thermoplastic-elastomers/onflex-thermoplastic-elastomers https://www.avient.com/products/long-fiber-technology https://www.avient.com/products/polymer-colorants/color-additive-combination-masterbatches/smartbatch-combination-colorants-additives https://www.avient.com/products/long-fiber-technology/complet-long-carbon-fiber https://www.avient.com/products/polymer-additives/foaming-agents https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/oncolor-fx-special-effect-colorants https://www.avient.com/products/polymer-additives/uv-and-light-blocking-additives/cesa-light-additives https://www.avient.com/products/polymer-additives/antioxidant-additives https://www.avient.com/products/polymer-colorants/color-additive-combination-masterbatches/smartbatch-fx-paint-replacement-0 https://www.avient.com/products/polymer-additives/visual-enhancement-effects/cesa-scratch-mar-resistance-additives https://www.avient.com/products/polymer-additives/colorants-and-additives-wire-cable/cesa-laser-additives https://www.avient.com/products/engineered-polymer-formulations/general-engineered-formulations/artisan-pre-colored-thermoplastics-premium-finishes

Cesa™ Fiber Additives Light Stabilizers for Synthetic Fibers and Nonwovens Non UV-stabilized fibers exposed to sunlight can suffer color fading and molecular changes that degrade their chemical and mechanical properties, leading to fraying and breakages. KEY BENEFITS Avient’s UV stabilizers for fibers provide the following benefits: • High active ingredient loading options available • Little or no effect on processing speeds so plant productivity can be maintained at the highest levels • Resistance to interaction with fertilizers, pesticides and bleaching agents in the manufacturing and end-use environment • Can be combined with colors and with other additives (e.g., flame retardants) into a single combination concentrate for convenience • Product guidance and technical assistance from our experts PRODUCT BULLETIN Copyright © 2022, Avient Corporation.

Bergamid™ Laser Welding Solutions (English) Bergamid™ Laser Welding Solutions help customers produce high-performance parts with durable welds and smooth surfaces (English language version) Transcend™ Precolored Gray and White PSU achieved accurate color match to non-polysulfone (PSU) components

Craftech Non-Metallic Fasteners Bergamid™ Laser Welding Solutions (Chinese) Bergamid™ Laser Welding Solutions help customers produce high-performance parts with durable welds and smooth surfaces (Chinese language version)

MAJOR W&C PRODUCER L O W - V O L T A G E W I R E J A C K E T & I N S U L A T I O N • Flame retardance • Heat resistance up to 125°C • Long term insulation resistance (LTIR) • Cold temperature resistance • Offered singular formulation capable of meeting UL-44, UL-4703, UL-1277 and CSA 22.2 listing specifications • Delivered economical solution suitable for multiple end-use commercial and residential applications • Provided on-site technical support to optimize production quality and speed Syncure™ XLPE Cross-linkable Polyethylene Formulations KEY REQUIREMENTS WHY AVIENT? All Rights Reserved. https://www.avient.com/products/engineered-polymer-formulations/flame-retardant-formulations/syncure-xlpe-cross-linkable-polyethylene-formulations

Name of topic CABLE PRODUCER P H O T O V O L T A I C C A B L E • Simplified supply chain and inventory by providing one solution for both insulation and jacket coating • Provided a material that gave cable a good surface finish and improved cable life time value (passed Arrhenius life time prediction as per IEC 60216-1 in internal lab test) • Reduced catalyst dosage resulting in lower material cost • Improved customer processing speeds • Enabled flame retardant performance to EN 50618 and IEC 60332-1 standards on complete cable ECCOH™ XL 8148 + ECCOH XL CAT 005 Formulations KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION UV RESISTANCE + FAST PROCESSING • Good electrical performance • Low smoke emissions and good flame retardant performance • UV resistance suitable for permanent outdoor use • Cold bending and elongation at break at -40°C LEARN MORE Copyright © 2022, Avient Corporation.