LEARN MORE TIER 2 MOLDER P A N E L F O R C O N S T R U C T I O N V E H I C L E S • Transition from painting extruded sheet (3-5mm) to molded-in color for two different thermoplastics • UV stability • Good appearance for visible part • Expedited approved solution that delivered the appearance and performance of a painted part • Developed formulations for two materials- PMMA and ABS • Offered aluminum appearance and required UV stability SmartBatch™ FX for Paint Replacement KEY REQUIREMENTS WHY AVIENT?

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.

Amber shades are known to be effective in prolonging the shelf life of packaged pharmaceuticals by protecting from degradation caused by UV light. Avient can design these concentrates in a range of amber tones from light to dark, and with more or less red or yellow.     Barrier technologies that preserve the shelf-life and quality of food, beverages, medicine and other perishable goods through high-performance materials that require less plastic •    Light-weighting solutions that replace heavier traditional materials like metal, glass and wood, which can improve fuel efficiency in all modes of transportation •    Breakthrough technologies that minimize wastewater and improve the recyclability of materials and packaging across a spectrum of end uses

They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. 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; • Disruptions or inefficiencies in our supply chain, logistics, or operations; • Changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; • Fluctuations in raw material prices, quality and supply, and in energy prices and supply; • Demand for our products and services; • 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 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; • Our ability to achieve strategic objectives and successfully integrate acquisitions, including the implementation of a cloud-based enterprise resource planning system, S/4HANA;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, geopolitical conflicts and any recessionary conditions Use of Non-GAAP Measures This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. The presentation of these measures may be different from non-GAAP financial measures used by other companies.

They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. 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; including recessionary conditions • The current and potential future impact of the COVID-19 pandemic on our business, results of operations, financial position or cash flows • 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 the strategic and other objectives relating to the Avient Protective Materials business; • 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 and any recessionary conditions Use of Non-GAAP Measures This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures. The presentation of these measures may be different from non-GAAP financial measures used by other companies.

They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. 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; • 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; • 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; • Any material adverse changes in the equity and assets of Koninklijke DSM N.V.’s protective materials business (“the Dyneema Business”); • Our ability to achieve the strategic and other objectives relating to the acquisition of the Dyneema Business and the possible sale of the Distribution business segment; and • Other factors described in our Annual Report on Form 10-K for the year ended December 31, 2021 and our Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2022 under Item 1A, “Risk Factors.” The presentation of these measures may be different from non-GAAP financial measures used by other companies.

They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. 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; • Disruptions or inefficiencies in our supply chain, logistics, or operations; • Changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; • Fluctuations in raw material prices, quality and supply, and in energy prices and supply; • Demand for our products and services; • 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 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; • Our ability to achieve strategic objectives and successfully integrate acquisitions, including the implementation of a cloud-based enterprise resource planning system, S/4HANA; • 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, geopolitical conflicts and any recessionary conditions; and • Other factors described in our Annual Report on Form 10-K for the year ended December 31, 2023 under Item 1A, “Risk Factors.” The presentation of these measures may be different from non-GAAP financial measures used by other companies.

They are based on management’s expectations that involve business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. 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; • disruptions or inefficiencies in our supply chain, logistics, or operations; • changes in laws and regulations in jurisdictions where we conduct business, including with respect to plastics and climate change; • fluctuations in raw material prices, quality and supply, and in energy prices and supply; • demand for our products and services; • 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 pay regular quarterly cash dividends and the amounts and timing of any future dividends; • information systems failures and cyberattacks; • our ability to service our indebtedness and restrictions on our current and future operations due to our indebtedness; • 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; • 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, geopolitical conflicts, and any recessionary conditions; and • other factors described in our Annual Report on Form 10-K under Item 1A, “Risk Factors.” Moving up the value chain, and expanding addressable market size by providing materials solutions in select and prioritized areas Copyright © . 2025 9 GROWING AT GROWING AT 1 Core grows above macro driven by share wins and faster business development in prioritized portfolios (growth vectors) CATALYZE THE CORE 2 Portfolios in high growth markets grow faster than core – building sizeable businesses of scale rapidly BUILD NEW PLATFORMS OF SCALE ► Prioritizing ► differently ► Creating “space” ► focused front-end and back-end structures Copyright © . 2025 10 Organic revenue growth with margin expansion LONG TERM FINANCIAL TARGETS +100 to +200bps above GDP Organic revenue growth Copyright © . 2025 11 Pathway to 20%+ adjusted EBITDA margins Operating leverage • Organic volume growth and SG&A efficiencies from prioritizing resources across the company 2 Mix improvement • Increased sales in higher margin growth platforms 3 Productivity • Manufacturing & sourcing efficiencies • Footprint optimization • Digital technologies Avient margin expansion Schematic illustration only Productivity +400bps margin expansion 20%+ Strategic objective 16.2% 2024 adjusted +2% +1% Operating leverage +1% Mix improvement Copyright © . 2025 12 Disciplined capital allocation PRIORITIZATION AND PHILOSHOPY Capex Expected annual spend between 3-5% of revenue to support investment in organic growth M&A De-emphasized in near term; complement organic growth strategy with M&A over time, as needed 2 Dividends Increasing each year with underlying earnings growth 3 Debt pay down Target net debt to adjusted EBITDA less than 2.5x 4 Share repurchases Opportunistic buy backs 5 Copyright © . 2025 13 Avient is a compelling investment thesis 2024 Results 15Copyright © .

Accordingly, actual results could differ significantly from these estimates. Actual results could differ from these estimates. These solutions meet a wide variety of unique customer requirements for light weighting.

Medical-grade pharmaceutical packaging solutions: oxygen scavenging additives, amber and white colorants, and white HDPE for MVTR (Moisture Vapor Transmission rate) reduction to protect drugs or nutraceuticals against UV light, moisture, and oxygen that cause product degradation. Light-weighting solutions that replace heavier traditional materials like metal, glass and wood, which can improve fuel efficiency in all modes of transportation and reduce carbon footprint