CLEVELAND – Collaborating with customers to replace metal in LED lights earned PolyOne Corporation (NYSE: POL) recognition at the inaugural Polymers and Plastics Innovation Awards, presented by the Society of Plastics Engineers (SPE) Benelux Division. PolyOne took first place in the Best Lightweighting Innovation category for helping Ayfar Otomotiv to replace metal in LED headlights for off-road vehicles, and was awarded second place in the Plastics and Electronics category for replacing metal in architectural LED lighting made by Finnish lighting specialist Kruunutekniikka. The two companies teamed up to develop an all-plastic temperature sensor in the 2015 Ford Edge to control heating and cooling of the vehicle’s interior.

This new additive joins the robust portfolio of ColorMatrix additives that enable improved recycling for plastic packaging. PET packaging can be easily recycled, yet plastic packaging waste in landfills and oceans is increasing worldwide. Avient employs approximately 8,400 associates and is certified ACC Responsible Care®, a founding member of the Alliance to End Plastic Waste and certified Great Place to Work®.  

Incorporating flame retardant additives can help mitigate fire hazards by increasing the ignition resistance of plastics, reducing the speed of flame spread, reducing heat release, and reducing smoke and fume generation. Chemical foaming agents are successfully used in plastics to cut weight from parts without compromising mechanical properties. They are available in liquid or solid form and can result in 10-20% less plastic needed.

Incorporating flame retardant additives can help mitigate fire hazards by increasing the ignition resistance of plastics, reducing the speed of flame spread, reducing heat release, and reducing smoke and fume generation. Chemical foaming agents are successfully used in plastics to cut weight from parts without compromising mechanical properties. They are available in liquid or solid form and can result in 10-20% less plastic needed.

Incorporating flame retardant additives can help mitigate fire hazards by increasing the ignition resistance of plastics, reducing the speed of flame spread, reducing heat release, and reducing smoke and fume generation. Chemical foaming agents are successfully used in plastics to cut weight from parts without compromising mechanical properties. They are available in liquid or solid form and can result in 10-20% less plastic needed.

Avient Corporation, its subsidiaries and affiliates design, source, manufacture and distribute chemicals and plastic products globally. Products are sold to more than 6,000 custom injection molders and extruders who, in turn, convert them into plastic parts that are sold to end-users in a wide range of industries. Polyone and Clariant Masterbatch combined in 2020 to form Avient.

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. GUIDANCE $800 $754 $128 $123 Sales Adjusted EBITDA $0.56 $0.57 13 • Demand impacted by destocking and cautious customer sentiment • Positive net price benefit: o CAI - Pricing flat and raw material deflation o SEM - Pricing flat with unfavorable mix related to healthcare, more than offset with raw material deflation • Cost reductions driven by Clariant synergies and reduced administrative costs Q3 EBITDA BRIDGE ($ millions) CAI: Price / Mix -) Deflation 22) SEM: Price / Mix (6) Deflation 13) Net Price Benefit 29) Cost Reductions 13) Wage Inflation (8) FX 1) Q3 2023 Actual $ 123) Adjusted EBITDA Q3 2022 Pro Forma $ 137) Demand (49) 14 2023 G U I DAN CE Q4 2023 GUIDANCE VS. PRIOR YEAR $790 $710 2022 2023 $107 $112 2022 2023 Sales Adjusted EBITDA $0.42 $0.47 2022 PF 2023 - 10% + 5% + 12% Sales Adjusted EBITDA Adjusted EPS 16 $112 $500 $0.47 Q4 AND FULL YEAR 2023 GUIDANCE $710 $3,130 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 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% 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 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% 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 Other Specialty / Note: Avient reflects 2023 estimated revenue of $3,130 and estimated run-rate CAPEX of $110M. 26 3.5 1.8 2.7 3.0 3.4 3.7 2.8 3.7 4.6 5.0 6.9 7.0 8.6 11.1 Av ie nt PP PM FM C N C FREE CASH FLOW CONVERSION Note: Free cash flow conversion calculated as (Adjusted EBITDA – Capex) / Adjusted EBITDA.

This means fewer color iterations, fewer color trials, and fewer plastic bottles traveling from one zone to the other. The K show is the world’s largest plastics industry event. Avient is certified ACC Responsible Care®, a founding member of the Alliance to End Plastic Waste and certified Great Place to Work®.  

Plastics provide tremendous benefits to our quality of life, but the challenges of plastic must not be ignored.   Avient Supports a Sustainable Future for Plastics - Video Plastics provide tremendous benefits to our quality of life, but the challenges of plastic must not be ignored.  

Plastics provide tremendous benefits to our quality of life, but the challenges of plastic must not be ignored.   Avient Supports a Sustainable Future for Plastics - Video Plastics provide tremendous benefits to our quality of life, but the challenges of plastic must not be ignored.