SOLID FOUNDATIONS: SAFETY FIRST © 2024, All Rights Reserved Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 https://www.erdc.usace.army.mil/Missions/Military-Engineering/Deployable-Force-Protection-Demo/ www.avient.com https://www.avient.com/content/ballistic-panel-quote-request-form

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • Disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; • The effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; • The current and potential future impact of the COVID-19 pandemic on our business, results of operations, financial position or cash flows, including without any limitation, any supply chain and logistics issues; • Our ability to achieve the strategic and other objectives relating to the acquisition of Clariant’s Color business, including any expected synergies; • Changes in polymer consumption growth rates and laws and regulations regarding plastics in jurisdictions where we conduct business; • Fluctuations in raw material prices, quality and supply, and in energy prices and supply; • Production outages or material costs associated with scheduled or unscheduled maintenance programs; • Unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; • An inability to achieve the anticipated financial benefit from initiatives related to acquisition and integration working capital reductions, cost reductions and employee productivity goals; • Our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • Information systems failures and cyberattacks; • Our ability to consummate and successfully integrate acquisitions; • Amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; and • Other factors described in our Annual Report on Form 10-K for the year ended December 31, 2020 under Item 1A, “Risk Factors.” C O - C R E A T I O N . • Fostering imagination • Enabling creative exploration • Focus on customers’ sustainability • Driving long-term revenue growth ColorWorks Avient Corporation 21 • Rapid customer response • Immediate color measurement and quotation • Fast track product development to “now” • Specialized labs for fast sample delivery • Optimized formulations leveraging cost effective raw materials C U S T O M E R - F O C U S E D C O L O R F O R M U L A T I O N Avient Corporation 22 InstaColr CycleWorks A D V A N C I N G T H E C I R C U L A R E C O N O M Y • Laboratory mimics real-world circular recycling in a research environment • Conducts chemistry testing to improve plastics recycling for customers • Screening and evaluation of additive and colorant systems during recycling • Collaboration platform for customers and value chain partners Avient Corporation 23 Avient Corporation 24 Sustainable Solutions Michael Garratt and Walter Ripple Our Sustainability Promise As the world’s premier provider of specialized polymer materials, services and solutions, Avient is committed to meeting the needs of the present without compromising future generations’ ability to meet their needs. Develop and implement solutions to end plastic waste while supporting AEPW $1.5B investment in key initiatives. 2030 Sustainability Targets 27Avient Corporation Sustainalytics 2021 ESG Risk Ranking RANK (1st = lowest risk) PERCENTILE (1st – lowest risk) Chemicals INDUSTRY 75/449 17th Specialty Chemicals SUBINDUSTRY 21/124 17th ISS November 2021 ESG Scores SCORE (1 = Best, 10 = Worst) Environmental 2 Social 1 Governance 4 28Avient Corporation Avient ESG Ratings Products 8 W A Y S W E H E L P C U S T O M E R S B E M O R E S U S T A I N A B L E 29Avient Corporation Enabling Customers’ Recycling Goals R E S O U N D ™ R R E C Y C L E D - C O N T E N T T P E 62% recycle content High performance and quality Reduce waste with refillable features 30Avient Corporation Lightweighting Commercial Trucks P O L Y S T R A N D ™ T H E R M O P L A S T I C C O M P O S I T E L A M I N A T E S 60% Weight reduction in box truck panels Improve fuel economy 100% recyclable 31Avient Corporation 75% less water Enabling Customers to Conserve Resources, Reduce Waste R E N O L ™ S P I N D Y E C O L O R I N G M E T H O D 30% less energy 25% lower carbon footprint 32Avient Corporation Sustainability for a Better Tomorrow *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 Revenue From Sustainable Solutions* 2016-2021 2016 2017 2018 2019 2020PF** 2021E $405M $455M $340M $550M $790M $930M $270 215 170 90 90 30 45 20 $930M2021E Sales ($ in millions) Avient Corporation 33 The Challenge and the Opportunity Avient Corporation 34 Plastic is Part of the Solution PLASTIC ALTERNATIVE PACKAGING (GLASS & ALUMINUM) Requires… Avient Corporation 35 Source: Franklin Associates, A Division of Eastern Research Group (ERG) 2x more Energy 6x more Water 5x more Weight 2x more Greenhouse gas emissions Brand Owners Goals: Substantially Increase use of Recycled Materials 1 1 2 3 5 7 7 7 9 10 30 40 14 25 13 22 35 9 19 13 18 41 Current Additional share needed to reach 2025 target Brand Owner 1 Brand Owner 3 Brand Owner 2 Brand Owner 7 Brand Owner 4 Brand Owner 10 Brand Owner 6 Brand Owner 11 Brand Owner 5 Brand Owner 8 Brand Owner 9 Brand Owner 12 Brand Owner 13 Percent recycled plastic used: (examples and not exhaustive) (1) (1) Latest year reported.

Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: • Disruptions, uncertainty or volatility in the credit markets that could adversely impact the availability of credit already arranged and the availability and cost of credit in the future; • The effect on foreign operations of currency fluctuations, tariffs and other political, economic and regulatory risks; • Changes in laws and regulations regarding plastics in jurisdictions where we conduct business; • Fluctuations in raw material prices, quality and supply, and in energy prices and supply; • Production outages or material costs associated with scheduled or unscheduled maintenance programs; • Unanticipated developments that could occur with respect to contingencies such as litigation and environmental matters; • Our ability to achieve strategic objectives and successfully integrate acquisitions, including Avient Protective Materials (APM); • An inability to raise or sustain prices for products or services; • Our ability to pay regular quarterly cash dividends and the amounts and timing of any future dividends; • Information systems failures and cyberattacks; • Amounts for cash and non-cash charges related to restructuring plans that may differ from original estimates, including because of timing changes associated with the underlying actions; and • Other factors affecting our business beyond our control, including without limitation, changes in the general economy, changes in interest rates, changes in the rate of inflation, any recessionary conditions, and terrorism or hostilities Use of Non-GAAP Measures This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. WHAT WE DO: WE ARE A FORMULATOR CUSTOM FORMULATION 6 N OVE MBE R 2 , 2023 W E BCAS T P RE S E N TAT I O N Complementary technologies and customer relationships offer opportunity to advance commercial strategy Dyneema®, the world’s strongest fiber™, to accelerate growth of sustainable, ultralight and high performance applications AVIENT PROTECTIVE MATERIALS FIRST YEAR 8 Composites comprises over half of Specialty Engineered Materials, compared to 9% in 2016 Proven history of success in areas such as outdoor high performance, defense and sustainable solutions Composites 44% 56% 2023E Sales Collaboration & InnovationComposites as a % of SEM People & Culture Talented, passionate, and creative associates drive continued integration success and allow two cultures to come together as one Avient Lightweight Protective Laminates: PROJECTILE PROTECTION Dyneema® Fiber Solutions Cushioning + Fit + Comfort: LONG-TERM WEAR reSound™ Versaflex™ Thermoplastic Elastomers Strength + Durability + Light-Weighting: SOLID MOUNTING BRACKETS Nymax™ Bergamid™ Complēt™ Engineered Materials Durability + Lubricity: HELMET LATCHES Lubri-One™ Internally Lubricated Polymers Color Consistency and Weatherability CUSTOMIZED SPECIFICATIONS Avient Color and Additive Solutions Antennae Performance FAST, RELIABLE CONNECTIONS PREPERM™ Low-Loss Dielectric Thermoplastics AVIENT PROTECTIVE MATERIALS CROSS SELLING OPPORTUNITIES Wired Connections CONSTANT COMMUNICATION Syncure™ Cross-linkable Wire & Cable Formulations9 10 AVIENT PROTECTIVE MATERIALS CROSS SELLING OPPORTUNITIES 10 Q 3 P E RFO RMAN CE 15.4% 16.3% 2022 PF 2023 Results vs. PRIOR YEAR $790 $710 2022 2023 $107 $112 2022 2023 Sales Adjusted EBITDA (in millions) $0.42 $0.47 2022 PF 2023 Adjusted EPS (in millions) - 10% + 5% + 12% Sales Adjusted EBITDA Adjusted EPS 16 $112 $500 Q4 FY $0.47 $2.30 Q4 FY Q4 AND FULL YEAR 2023 GUIDANCE $710 $3,130 Q4 FY Sales Adjusted EBITDA Adjusted EPS 17 (in millions) (in millions) Guidance: Free Cash Flow $180 $180 Prior Guidance Guidance FREE CASH FLOW & INCREASED DIVIDEND 13th Consecutive Dividend Increase 0.16 0.26 0.42 0.58 0.79 0.85 0.99 1.03 2011 2013 2015 2017 2019 2021 2023 2024 18 S U S TAI NABI L I T Y DAY RE CAP SUSTAINABILITY AS A GROWTH DRIVERLONG-TERM REVENUE GROWTH DRIVERS 60%+ Key Growth Drivers Sustainable Solutions Composites, Healthcare, Asia / LATAM Overlap Other (GDP Growth) Total Company Revenue Growth Drivers Long-Term Growth Rate Sustainable Solutions 8–12% Composites 8–10% Healthcare 8–10% Asia / LATAM 5% Other (GDP growth) 0–2% Avient 6% 20 SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 8-12% Long Term Growth 50 90 2022 2030 Medical Plastics Market Size (in $Billions) 2020 2030 Recycled Plastics Virgin Plastics Growing Demand for Recycled Content Avient Sustainable Solutions 18 46 2023 2032 Global Offshore Annual Wind Installations (in Gigawatts) Sources: McKinsey, Bloomberg, Grand View Research SUSTAINABILITY TRENDS DRIVE LONG-TERM GROWTH 21 • Transformative acquisitions combined with divestitures of more cyclical businesses have improved margins over 400 bps since 2018 • 20% long-term margin goal to be driven by key growth drivers, with sustainable solutions playing a meaningful role 5.4% 11.5% 16.0% 2006 2018 2023E Recovery Growth Drivers Strategic Objective 20%+ +1%+ +3%+ ADJUSTED EBITDA MARGIN EXPANSION 22 • 6% annualized long-term sales growth leveraging sustainable solutions, composites, healthcare, and emerging regions • Expand EBITDA margins to 20% • Deliver annual EBITDA and EPS growth of 10% and 15% • Maintain asset-light, 80% free cash flow conversion profile and be valued as a specialty formulator • Continue fostering our Great Place to Work® culture CREATING A WORLD-CLASS SUSTAINABLE ORGANIZATION 23 PEER COMPARISONS AVIENT IS ASSET LIGHT Capex / Revenue 2023E (%) Avient Specialty Formulators Other Specialty / Chemical Companies Source: Peer data per Bloomberg as of December 29, 2023 Note: Avient reflects 2023 estimated revenue of $3,130 and estimated run-rate CAPEX of $110M. 26 3.5 1.8 2.7 3.1 3.3 3.7 3.0 3.7 4.7 4.8 6.8 6.8 8.7 11.1 Av ie nt KW R FU L PP G AV Y R PM FM C H U N C E EC L H XL AS H EM N SC L FREE CASH FLOW CONVERSION Source: Peer data per Bloomberg as of December 29, 2023 Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA.

Recycle Loop AAnchor Mg/kg Anthranilamide Mg/kg Virgin

ColorMatrix™ Lactra™ SX Light Blocking Additive High-performance, visible light blocking technology for extended shelf life, UHT dairy PET packaging PRODUCT BULLETIN PRODUCT DESCRIPTION ColorMatrix™ Lactra™ SX Light Blocking Additive is a solid masterbatch additive that, when added to PET to make monolayer bottles, provides high-performance light blocking technology and protection for liquid dairy contents.

The Transcend line of high-performance colorants features solid opaque colors and transparent colors that consist of bright, vibrant tones.

With both liquid and solid polymer formulations, we give you the flexibility to select the best solution for your process.

According to the American Chemistry Council, plastic components make up 50 percent of a vehicle’s volume, but only 10 percent of its weight.

According to the American Chemistry Council, plastic components make up 50 percent of a vehicle’s volume, but only 10 percent of its weight.

According to the American Chemistry Council, plastic components make up 50 percent of a vehicles volume, but only 10 percent of its weight.