AFTERMARKET PARTS MANUFACTURER S I D E S T E P • High strength • Low moisture absorbance, reduced warpage • Pleasing cosmetic finish • Strong flexural modulus • Offered long fiber thermoplastic (LFT) with 3x the strength of the incumbent short fiber material without a need for retooling • Resolved major disadvantage of moisture uptake with a moisture-resistant PA66 LFT formulation • Facilitated part consolidation and design freedom • Modeled performance of long glass fiber design with advanced testing capabilities (FEA, moldflow, burnoff) Complēt™ Long Fiber Reinforced Structural Thermoplastics KEY REQUIREMENTS WHY AVIENT AVIENT SOLUTION STRENGTH + PART CONSOLIDATION LEARN MORE Copyright © 2023, Avient Corporation. AVIENT SOLUTION https://www.avient.com/products/engineered-polymer-formulations/high-temperature-polymer-formulations/complet-long-fiber-reinforced-structural-thermoplastics

AFTERMARKET PARTS MANUFACTURER S I D E S T E P • High strength • Low moisture absorbance, reduced warpage • Pleasing cosmetic finish • Strong flexural modulus • Offered long fiber thermoplastic (LFT) with 3x the strength of the incumbent short fiber material without a need for retooling • Resolved major disadvantage of moisture uptake with a moisture-resistant PA66 LFT formulation • Facilitated part consolidation and design freedom • Modeled performance of long glass fiber design with advanced testing capabilities (FEA, moldflow, burnoff) Complēt™ Long Fiber Reinforced Structural Thermoplastics KEY REQUIREMENTS WHY AVIENT AVIENT SOLUTION STRENGTH + PART CONSOLIDATION LEARN MORE Copyright © 2023, Avient Corporation. AVIENT SOLUTION https://www.avient.com/products/engineered-polymer-formulations/high-temperature-polymer-formulations/complet-long-fiber-reinforced-structural-thermoplastics

STRUCTURAL DECKING R E I N F O R C E D H D P E L U M B E R • Reinforcement to improve strength of HDPE decking • Composite tape compatible with HDPE for strong adhesion • Low thermal expansion • Domestic (U.S.) supply and manufacturing • Added strength to HDPE deck boards to enable industry-leading load capacity and joist spacing spans • Extended product life with superior adhesion of PE tape via co-extrusion • Improved supply reliability with product manufactured in Englewood, CO Polystrand™ unidirectional thermoplastic composite tape KEY REQUIREMENTS WHY AVIENT? All Rights Reserved. https://www.avient.com/products/advanced-composites/continuous-fiber-composite-tape-laminates-and-barstock/polystrand-continuous-fiber-tapes-laminates

Advanced Mobility Composite Structures OnForce™ LFT Long Fiber Reinforced Thermoplastic Composites Advanced Composites

Additionally, Adjusted EPS excludes the impact of special items and amortization expense associated with intangible assets. 2 COMPOSITES PORTFOLIO D Y N E E M A ® E X P A N D S O U R E N G I N E E R E D F I B E R S A N D P A N E L S T E C H N O L O G Y LFT Tapes Laminates/Panels Shapes Pultrusion Engineered Fibers 4 DEFENSE TELECOMMUNICATIONS ENERGY TRANSPORTATION Military • Law Enforcement First Responders Body Armor • Helmets Vehicle Protection Sustainable Infrastructure Offshore Wind Electrical Grid Protection EV Battery Components Commercial Laminates Body & Trim • Air Cargo and Railroad Car Panels 5G Applications Fiber Optic Cables Satellite Communications Connectors and Components 5 COMPOSITES SERVE DIVERSIFIED END MARKETS INDUSTRIAL Lifting Slings • Aquaculture High Pressure Pipe Conveyer Springs Q 2 P ER FO RM A N CE Q2 2023 PERFORMANCE VS. GUIDANCE (TOTAL COMPANY) 8 15.4% 15.9% Guidance Actual Adjusted EBITDA Margin % Better-than-expected margins driven by: • Favorable mix - strong demand for composite applications • Raw material deflation Q2 EBITDA BRIDGE (TOTAL COMPANY) 9 ($ millions) CAI: Price / Mix 7) Deflation 11) SEM: Price / Mix 2) Deflation 6) Net Price Benefit 26) Wage and Energy Inflation (10) Cost Reductions 13) FX (2) Q2 2023 Actual $131) Adjusted EBITDA Q2 2022 Pro Forma $ 172) Demand (68) • Demand conditions vs. expectations: US & Canada LATAM EMEA Asia • Net price benefit remains greater than wage and energy inflation • Clariant synergies and reduced administrative costs Q2 2023 SEQUENTIAL SALES BY REGION Q 2 2 0 2 3 v s . Q 1 2 0 2 3 -8% +6% -1% Flat 10 US & Canada Latin America EMEA Asia Total Avient -2.6% 2023 G U IDA N CE $128 $525 Q3 FY $0.56 $2.40 Q3 FY 2023 GUIDANCE 12 $800 $3,280 Q3 FY Sales Adjusted EBITDA Adjusted EPS (in millions) (in millions) 13 • Focused on working capital management, restructuring actions to streamline operations • IT investment to further integrate acquired businesses and capture operational efficiencies • Preserve Free Cash Flow to maintain net leverage CASH FLOW / LEVERAGE ($ millions) 2023E Cash Flow from Operating Activities 320$ Less: CapEx (140) Free Cash Flow 180$ Adjusted EBITDA 525$ Net Debt / Adjusted EBITDA 3.0x SUSTAINABILITY AS A GROWTH DRIVER 14 LONG-TERM REVENUE GROWTH DRIVERS Revenue From Sustainable Solutions* 2016-2022 $340M $405M $455M $550M $790M $915M 2016 2017 2018 2019 2020PF** 2021 2022PF*** $1,175M *Avient Sustainable Solutions definitions aligned with FTC 2012 Guide for the Use of Environmental Marketing Claims (“Green Guides”) **2020 is Pro Forma to include full year of the Clariant Color business ***2022 is Pro Forma for the acquisition of Avient Protective Materials and the divestiture of Distribution 60%+ Key Growth Drivers Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other (GDP Growth) Total Company Revenue SUSTAINABILITY REPORT 2022 • Provides progress on 2030 goals • Reaffirms commitment to U.N.

MagIQ™ Nonwoven Electret Additives for High-efficiency Particulate Air (HEPA) Filters The nonwoven electret additives are necessary for the manufacture of polypropylene meltblown nonwoven, used to make fresh air system filters with long-lasting filtration properties. The finer the fiber, the greater the specific surface area and the better the filtration performance. The smallest particles are extracted from the air by electrostatic attraction to the fibers.

Complēt™ PKE Formulations Complēt™ PKE formulations are long glass fiber reinforced polyketone solutions for structural applications using metal today. They also offer over 2x higher impact properties than short fiber reinforced solutions, while maintaining impact properties in cold and demanding environments. Grades are available in black and natural with 30%–50% long glass fiber, with or without a flame retardant, allowing customers to customize performance requirements for structural applications.

PIRANHA M A R I N E P R O P E L L E R • Similar mechanical properties to aluminum and stainless steel • Improved impact resistance, durability, and vibration damping properties • Injection moldable • Enabled up to 20% more impact resistance compared to standard long fiber reinforced materials, including the incumbent material • Improved durability and vibration damping allowing the blades to flex and absorb energy from minor impacts • Facilitated an interchangeable blade system providing a cost- effective solution for repairs and tuning of propulsion thrust to meet a boat’s intended use, for either speed or transporting loads • Enhanced design flexibility allowing for the innovative blade design to provide 400% more reverse thrust than standard propellers and twice as much as competing metal propellers Complēt™ MT Long Glass Fiber Reinforced Nylon 6 KEY REQUIREMENTS WHY AVIENT? All Rights Reserved. https://www.avient.com/products/engineered-polymer-formulations/high-temperature-polymer-formulations/compl%C4%93t-long-fiber-reinforced-structural-thermoplastics

We will do so through our investments and focus on sustainable solutions for high-growth markets, including healthcare, consumer, packaging and composites. Composites Adv. GDP Growth Avient Historic Growth Future Growth Assumptions Global Avient: 2.7% Asia / LATAM: 5.0% Source: International Monetary Fund, World Economic Outlook Database (April 2021) 12% organic CAGR Figures above include relevant sustainable solutions, healthcare and composites sales Avient Corporation 120 Net Sales ($ millions) 8-10% CAGR (5% CAGR excluding Sustainable Solutions) Summary: Long-term Revenue Growth Drivers Avient Corporation 121 Growth Drivers ($ millions) 2021 Sales Estimate (Drivers) Overlap 2021 Sales Estimate Annual Growth Rate Sustainable Solutions 930 - 930 8–12% Healthcare 685 (45) 640 8–10% Composites 260 (80) 180 10% Asia / LATAM 1,150 (310) 840 5% Other (GDP growth) 2,160 2–3% Avient $4,750 6.5% EBITDA Margin Expansion Goals CAI SEM • Continued portfolio transformation to high- growth end markets and sustainable solutions • Clariant Color synergy realization • Investments in composites and outdoor high performance applications drive growth and mix improvements Avient Corporation 122 17.0% 1.6% 1.0% 0.4% 2021E Synergies Sustainable Solutions Healthcare Goal 17.6% 0.9% 1.1% 0.4% 2021E Composites Sustainable Solutions Healthcare Goal 20%+ 20%+ Sustainable Path to Double Digit Earnings Growth Avient Corporation 123 Growth Drivers Long-Term Sales Growth Rate Sustainable Solutions 8–12% Healthcare 8–10% Composites 10% Asia / LATAM 5% Other (GDP growth) 2–3% Avient 6.5% 10%+ Adjusted EBITDA growth 15%+ Adjusted EPS growth Investor Day 2021 An Investment in Sustainable Growth Bob Patterson Avient Corporation 124 M&A Brings Avient New Technologies Avient Corporation 125 Technology Acquisition Technology Acquisition Thermoplastic Elastomers Liquid Color Concentrates & Additives Continuous Fiber Composites Thermoplastic Composites Silicone Colorants & Formulations High-temperature Polymers & Fluoropolymers Long Fiber Reinforced (LFT) Thermoplastic Composites Fiber Solutions Water-based Inks Fiber & Healthcare Expertise, Liquid Additive Processing Aids, FR Additives, Recycling Innovations & More $133 $205 2019PF 2021E Clariant Color: Transformational Acquisition 126 Clariant Color EBITDA Growth Purchase Price Multiple 10.8x 7.0x 6.0x 2019PF 2021E 2021E w/ Full Synergies • Acquisition of Clariant Color business significantly expanded presence in healthcare, packaging and consumer end markets • Strength of portfolio – double-digit annual EBITDA growth since acquisition • On-track to realize $52 million of expected synergies in 2021 • Acquisition completed on July 1, 2020 for $1.45 billion.

CASE STUDY: POLYSTRAND™ THERMOPLASTIC COMPOSITES THERMOPLASTIC COMPOSITES REDUCE WEIGHT, ADD STRENGTH TO INDUSTRY-FIRST SNOWBOARD BINDINGS Discover how Polystrand™ continuous fiber reinforced thermoplastics can add lightweight strength and durability to your application. Incorporating composite materials in snowboard bindings is not a new concept. Injection overmolding with thermoplastic composite laminates combines the advantages of injection molding—the ability to create complex shapes and fast cycle times—with the lightweight strength and durability of continuous fiber reinforcement.