Incorporating PCR into closures is reported to reduce greenhouse gas (GHG) emissions by 71% over the use of virgin resin¹.

The shrinkage values reported by Avient are determined using a 0.125" thick plaque.

Multi-family new construction starts are down roughly 30% YOY, while single-family starts are down over 3% in the same period. 2,100 1,800 1,500 1,200 900 600 300 0 Th ou sa nd s o f U ni ts Sep-19 New Residential Construction (Seasonally Adjusted Annual Rate) Sep-20 Sep-21 Sep-22 Source: U.S. Values reported as “typical” or stated without a range do not state minimum or maximum properties; consult your sales representative for property ranges and min/max specifications. YOUR NEXT MOVE https://www.avient.com/composites Sources • Lucintel Market Research Report (2024) • Prefab Modular Smart Market Report (2020) • Modular Construction Research Report MBI • McKinsey & Co.

Microsoft PowerPoint - PolyOne Investor Presentation 5.4.20_v8 P E O P LE P RO D U CT S P LA N E T P E RF O R MAN C E JVs Performance Products & Solutions Distribution Specialty To be the world’s premier provider of specialized polymer materials, services and solutions To be the world’s premier provider of specialized polymer materials, services and sustainable solutions 2016 2017 2018 2019 Lightweighting Reduced Material Requirements Improved Recyclability Renewable Energy Applications Eco-conscious Bio-derived Content Reduced Energy Use VOC Reduction $275M $325M $355M $410M 14% Total Annual Growth 9% Organic Annual Growth PolyOne Corporation 33 Senior management uses comparisons of adjusted net income from continuing operations attributable to PolyOne shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to PolyOne shareholders, excluding special items, to assess performance and facilitate comparability of results.

Patterson added, “Last year, we substantially expanded our composite offerings with the acquisition of Dyneema®, the world’s strongest fiber™, and I’m pleased to report integration is progressing exceptionally well. https://www.avient.com/ 5 Forward-looking Statements In this press release, statements that are not reported financial results or other historical information are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. In addition, operating income before the effect of special items is a component of Avient's annual incentive plans and is used in debt covenant computations.

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, tariffs, and any recessionary conditions; and • other factors described in our Annual Report on Form 10-K under Item 1A, “Risk Factors.” You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission. Q1 2024 ORGANIC FX AS REPORTED Sales $827M 1.8% (2.1%) (0.3%) Adj.

Test data is then reported on the COA which is generally generated out of the System. 11. The system reports the number of complaints by type, number of complaints still open, number of complaint responses , etc. Yes Annual D2 If you answered "Yes" to Question (D1), how frequently is the plan tested?

DENTAL PRODUCTS MANUFACTURER T O O T H B R U S H E S • Achieve lower let-down ratios (LDRs) • Maintain sufficient antimicrobial functionality • Preserve clarity or retain opacity, depending on resin • Shorten lead times to minimize inventory and production bottlenecks • Provided full antimicrobial functionality at lower LDRs for 30% annual cost savings • Designed universal carrier that enabled additive use across a variety of resins • Reduced lead time over previous supplier by one week, enabling customer to better manage inventory levels and increase production efficiencies WithStand™ Antimicrobial Additives KEY REQUIREMENTS WHY AVIENT?

AVIENT SOLUTION LIGHTWEIGHTING + CYCLE TIME LEARN MORE • Achieved average weight reduction across molds of 7.75% • Achieved cycle time reduction of 15-20% • Provided key support with equipment and processing • Reduced energy consumption • Projected savings of $500,000 annually KEY REQUIREMENTS • Lightweighting • Cycle time improvement • Processing support to enable a seamless transition to begin using foam Copyright © 2020, Avient Corporation.

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.” You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission. Free cash flow use 2020– 2024 est. 30% 37% 6%27% Debt paydown Dividend payments Share buybacks M&A, other 15% CAGR Copyright © . 2024 62 Disciplined capital allocation PRIORITIZATION AND PHILOSHOPY Capex Expected annual spend between 3-5% of revenue to support investment in organic growth Dividends Increasing each year with underlying earnings growth Debt pay down Target net debt to adjusted EBITDA less than 2.5x Share repurchases Opportunistic buy backs M&A De-emphasized in near term; complement organic growth strategy with M&A over time, as needed Copyright © . 2024 63 Avient is a compelling investment thesis Ability to adapt & pivot to deliver results highly motivated team with track record of operational and commercial excellence Global reach with local touch customer-centric focus across continents and cultures to serve locally and win globally Innovation differentiation by hybridizing technologies to create platforms at scale aligned to high growth market segments and secular trends MARGIN EXPANSION and sustainable growth ORGANIC GROWTH complemented by M&A over time as needed Strong CASH GENERATION and EXECUTION Broad customer base and COMPETITIVE ADVANTAGE Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Below is a reconciliation of non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with GAAP.