The non-GAAP financial measures include: Adjusted Earnings Per Share, Free Cash Flow, Net Debt/Adjusted EBITDA and Adjusted EBITDA. Avient does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for Adjusted EBITDA, Adjusted Earnings Per Share, Net Debt/Adjusted EBITDA and Free Cash Flow to the most comparable GAAP financial measures on a forward-looking basis because Avient is unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort. National Defense budget of $842 billion submitted to Congress in Q1 2023 • European NATO members annual defense spend expected to increase by up to 20%  Dyneema® is the world’s strongest fiber™  One of the highest strength to weight ratios of any material on Earth  Direct relationships with industry leading armor manufacturers  Resistant to most chemicals, UV, and moisture to handle any environment Avient Confidential 13 DEFENSE Source: US Department of Defense, defense.gov, NATO13 Source: TRANSPORTATION • Increased EPA regulations requiring improved fuel efficiency, enabled in part by lower-weight vehicles • Automakers preparing for 2/3 of U.S. vehicles to be 100% electric by 2032  Lightweight panels that establish both strength and stiffness resulting in decreased energy usage, lower emissions  Long-lasting Color applications to resist UV exposure, temperature fluctuations and exceed the stylistic requirements of global automakers 14 $130 $530 $0.60 $2.40 2023 GUIDANCE 15 Sales Adjusted EBITDA $845 $3,400 Adjusted EPS (in millions) (in millions) CASH FLOW / LEVERAGE 16 • Maintaining free cash flow and leverage guidance from February earnings call • IT investment to further integrate acquired businesses and capture operational efficiencies • Restructuring actions to streamline operations and improve profitability, primarily in Europe ($ millions) 2023E Cash Flow from Operating Activities 350$ Less: Run-Rate CapEx (110) CapEx for IT System Upgrade (25) CapEx for Restructuring (15) Total CapEx (150) Free Cash Flow 200$ Adjusted EBITDA 530$ Net Debt / Adjusted EBITDA 2.9x LONG-TERM REVENUE GROWTH DRIVERS Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Healthcare 8–10% Composites 10% Asia / LATAM 5% Other (GDP growth) 2–3% Avient 6.5% 17 Sustainable Solutions 32% Asia / LATAM Composites Other (GDP Growth) 39% • Virtual presentation to be held September 20, 2023 • The company will be conducting an investor-focused presentation around our sustainability solutions portfolio Avient Confidential 18 SUSTAINABILITY INVESTOR DAY 18 $340M $405M $455M $550M $790M $915M 2016 2017 2018 2019 2020PF** 2021 2022PF*** SUSTAINABILITY FOR A BETTER TOMORROW Revenue From Sustainable Solutions* 2016-2022 ($ in millions) Organic Future Growth Revenue Assumptions From Sustainable Solutions: 8 - 12% 19 *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 $1,175M Lightweighting Eco-Conscious Recycle Solutions VOC Reduction Sustainable Infrastructure Human Health & Safety Reduced Energy Use Bio-polymers SUSTAINABILITY NEEDS BY MARKET B&C • Eco-Conscious • Carbon footprint • Resource conservation • Carbon footprint • Bio based content • Eco-Conscious Automotive • Light weighting • Recycled Content • VOC reduction • Recycle Solutions • Carbon Footprint Packaging • Recycle Solutions • Food waste reduction Common Theme: CO2 Emission Goals Increasing Single-Use Plastic Regulation 20 INVESTING IN INNOVATION S U S T A I N A B I L I T Y P O R T F O L I O 21 AP P EN D IX 24 RAW MATERIAL 2022 ANNUAL PURCHASES Performance Additives 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 • Cost inflation decelerating, particularly for hydrocarbon-based raw materials 2022 pro forma results for the acquisition of Avient Protective Materials SEGMENT DATA U.S. & Canada 40% 37% 18% 2022 PRO FORMA SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 24% Building and END MARKET REVENUE $2,355M $402M $1,300M $272M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $592M$3,653M (1) 9% 26 (1) Total company sales and adjusted EBITDA of $3,653M and $592M, respectively, include intercompany sales eliminations and corporate costs C O L O R , A D D I T I V E S & I N K S 2022 REVENUE | $2 .4 B ILL ION 34% 38% END MARKET REGION 27 34% 21% Building & 1% Energy 2% S P E C I A LT Y E N G I N E E R E D M AT E R I A L S 2022 PRO FORMA REVENUE | $1 .3 B ILL ION END MARKET 52% 35% REGION 28 19% 8%Industrial 9% Defense Building & 32% 27% 14% Building & 3% 1% Defense 1% (18% of sales) 9% 2022 PROFORMA AVIENT REGIONAL SALES BY END MARKET 27% 14% 17% Building & (37% of sales)Transportation 24% 12% Building & US & Canada (40% of sales) 56% 23% Building & 1% LATAM (5% of sales) 3% 29 PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Other Specialty / Note: Avient reflects 2023 estimated revenue of $3,400 and estimated run-rate CAPEX of $110M. 31 4 4 5 5 5 6 7 9 FREE CASH FLOW CONVERSION Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA.

The non-GAAP financial measures include: adjusted EPS, adjusted operating income, free cash flow and adjusted EBITDA. D is t. ) LB Median: 5%Median: 3% Avient reflects 2021 estimated revenue of $4,300M and excludes one-time synergy capture CAPEX ($20M) Avient Specialty Other Free Cash Flow Conversion (1) 2021E (%) Being asset light helps us to generate strong free cash flow that is in line with specialty formulators. In 2021, we expect substantial earnings growth and strong cash flow generation as we emerge from the COVID-19 pandemic.

respectively; full year free cash flow expectation maintained at We continue to generate strong cash flow from operations and are maintaining our full year free cash flow guidance of Plastic Waste

Available in a wide range of customizable colors, these impact-modified nylon formulations eliminate secondary painting processes—unlike traditional materials such as painted plastics or metals—providing the added manufacturing and sustainability benefits of reducing energy use and removing VOC emissions. TECHNICAL BULLETIN Characteristics Artisan™ Nylon Solution Painted Metal Painted Plastic Traditional Molded-in Color Impact Modified Nylon PA Ionomer Alloy Aesthetic Very Good Excellent Excellent Good Very Good Very Good Scratch Appearance Excellent Poor Poor Good Excellent Excellent Scratch & Mar Resistance Very Good Excellent Excellent Poor Very Good Excellent Color Customization Good Excellent Excellent Very Good Good Good Stress Whitening Excellent Fair Fair Poor Excellent Excellent Weatherability Good Excellent Excellent Very Good Good Very Good Temperature Performance Good Excellent Fair Fair Fair Good Corrosion Resistance Excellent Fair Excellent Excellent Excellent Excellent Processability One Step Multi Step Multi Step One Step One Step Complex One Step Total Production Cost $$$ $$$$$ $$$$ $$ $$$ $$$$ Order Quantity Restrictions Some Some Some None More More COMPARISON OF NYLON, METAL, AND PLASTIC Properties Test Method Artisan™ AR6000-0007 HI UV* Gloss Level** Gloss reading at 60 degrees 80-93 Molding Shrinkage – Across Flow ASTM D955 0.009 to 0.013 in/in Tensile Strength (Yield) ASTM D638 7300 psi Tensile Strength (Break) ASTM D638 5300 psi Tensile Elongation (Yield) ASTM D638 6.0% Flexural Modulus ASTM D790 270500 psi Flexural Strength (Yield) ASTM D790 9950 psi Notched Izod Impact ASTM D256 -4°F (-20°C) 5 ft-lb/in 73°F (23°C) 11 ft-lb/in Unnotched Izod Impact ASTM D256 -4°F (-20°C) 29 ft-lb/in 73°F (23°C) 30 ft-lb/in Color & Aesthetics*** Green, medium blue, dark blue, red, orange, white, gray, black Color customization available based on specific needs KEY PROPERTIES Features: high-gloss finish, UV stability, scratch resistance, chemical/corrosion resistance, cold temperature impact resistance, heat resistance * Reflects average of several colors, properties shift slightly depending on color ** Gloss level varies based on tooling temperature *** UV data available upon request Copyright © 2023, Avient Corporation.

Mevopur™ Healthcare Functional Additives Laser Welding Additives for Medical Devices Laser welding has become a technology of choice to join plastic parts of complex medical devices. Also known as transmission welding, laser welding is the process of using focused laser radiation to bond two plastic parts, one that is transparent to the laser energy and one that absorbs the energy. Please be aware that there are certain applications Avient’s Mevopur products have not been designed for, nor are they promoted or intended for use in: including, but not limited to long-term or permanent implants, birth control devices, or plastic surgery.

Carriers: PET, PBT, PA 6, PA 66, others • Continuous filament spinning, including fine denier (POY, FDY, HOY, bi-component yarns) • Spunbond WHITE • TiO2 white with excellent opacifying or tinting strength • Optical white MBs that improve the surface whiteness and/or brightness of end products • Optimal melt flow properties allow a good mixture with the polymer matrix yielding the best possible spinnability • Full pigment dispersion ensures maximum CPF/ Spinning pack life It works by injecting liquid color at high pressure into the polyester melt-flow between the end of the extruder, or melt-pipe, and the spin head. Ying Gang East (Dong) Rd. 8376 Textile Science and Technology Park Qingpu Industrial Zone Shanghai 201700 - PRC Phone: +86 216 973 2233 ColorMatrix Plastic Colorants Co., Ltd.

Materials that can take the heat rising, chemicals flowing and sparks flying under the hood. Materials that can take the heat rising, chemicals flowing and sparks flying under the hood.

198.01 FEP HIGH FLOW CC HIGH BROWN 198.82 FEP HIGH FLOW CC HIGH RED

In a balanced runner system, molten material flows into each cavity at equal times and pressure. For conventional cold runner tools, full-round runners are best because they provide the lease resistance to flow and minimize cooling in the runner.

T612.5 FEP HIGH FLOW CC HIGH GREEN T612.6 FEP HIGH FLOW CC HIGH BLUE T635.5 FEP HIGH FLOW CONC. 5% BN-FILLED