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.” For the same reasons, Avient is unable to address the probable significance of the unavailable information. 2 3 AVIENT OVERVIEW 2023 Financial ResultsCompany Overview Revenue By: 9,300 Employees 102 Manufacturing Sites 20,000+ Customers  Innovating materials and processing solutions to solve our customers’ challenges while enabling a sustainable world  Broad portfolio of technologies with market leading positions and flexibility to anticipate and meet customer needs  Focus is on organic revenue growth and margin expansion, following our successful portfolio transformation $3.14B Revenue $2.36 Adjusted EPS $502M Adjusted EBITDA 16.0% Adjusted EBITDA Margins $186M Adjusted Free Cash Flow U.S. & Canada EMEA Asia Latin America 64% 36% Specialty Engineered Materials Color Additives and Inks 41% 36% 18% 5% 7% 7% 23% 19% 9% 16% 10% 5% 4% Defense Healthcare Packaging Consumer Building & Construction Industrial Transportation Energy Telecom Geography Segment Industry 2024 Financial Guidance $525 to $530 million Adjusted EBITDA $2.63 to $2.67 Adjusted EPS 4 Industry Sustainability Standards ESG Ratings Performance 1 2 4 87th 94th percentile Avient CDP Score: A- SUSTAINABILITY PERFORMANCE AND RECOGNITION O CTO BE R 3 1 , 2024 W EB CAS T P RE SE N TATI O N 6 Q3 2024 HIGHLIGHTS • 8.5% organic sales growth driven by broad-based growth across all regions and most end markets in both CAI and SEM segments • Growth stemmed from gaining share, winning new product specifications and restocking in certain end markets • Both segments expanded YoY EBITDA margins by 40 bps each • Adjusted EPS of $0.65, an increase of 14% vs the prior year • Successfully refinanced $650M outstanding senior notes due 2025; extending maturity to 2031 • Increased dividend 5% to $1.08 on an annualized basis; 14th consecutive increase Adj.

EXTERNAL FIXATOR DEVICE S T A B I L I Z I N G R O D S • Durable material that withstands everyday use • Light weight for easy customer handling • Precise stiffness to support load requirements and extend product lifetime • Maintained stiffness and straightness necessary for halo applications • Provided superior strength-to-weight ratio vs. metal • Appealed to aesthetics while maintaining high performance needs • Maximized user comfort via customized Avient Design services Glasforms™ Carbon Fiber Rods KEY REQUIREMENTS WHY AVIENT? All Rights Reserved. https://www.avient.com/products/advanced-composites/pultrusion-and-continuous-filament-winding-technology/glasforms-pultruded-rods-tubes-custom-profiles

Our broad and expansive specialty solutions, coupled with exemplary service offerings such as Leveraging our unique strengths is more important now than ever with weak demand in a number of end markets and regions," Mr. is a premier provider of specialized polymer materials, services and solutions.

These solutions helped one of our customers satisfy high Vehicle Interior Air Quality (VIAQ) standards without compromising desired surface finish, gloss level, mechanical property or density. Maxxam™ helped the customer reduce the VOCs and fogging in their newly launched models by up to 80%, without compromising desired mechanical property or surface finish. Onflex™ Lo TPE helped the same customer replace traditional PU foaming materials for HVAC sealing components, which greatly improved the VOC levels to meet local vehicle interior air quality standards.

Avient worked with a progressive customer who designed floating solar panels that float on large bodies of water, and require very demanding weather resistance in harsh environments. Smartbatch™ Color and Additive Concentrates offered unparalleled UV weathering protection color concentrates for our customer’s solar power stations. Smartbatch™ enhanced the customer’s power generation efficiency by 10%, while providing shielding to prevent algae growth.

These solutions helped one of our customers satisfy high Vehicle Interior Air Quality (VIAQ) standards without compromising desired surface finish, gloss level, mechanical property or density. Maxxam™ helped the customer reduce the VOCs and fogging in their newly launched models by up to 80%, without compromising desired mechanical property or surface finish. Onflex™ Lo TPE helped the same customer replace traditional PU foaming materials for HVAC sealing components, which greatly improved the VOC levels to meet local vehicle interior air quality standards.

Avient worked with a progressive customer who designed floating solar panels that float on large bodies of water, and require very demanding weather resistance in harsh environments. Smartbatch™ Color and Additive Concentrates offered unparalleled UV weathering protection color concentrates for our customer’s solar power stations. Smartbatch™ enhanced the customer’s power generation efficiency by 10%, while providing shielding to prevent algae growth.

Avient worked with a progressive customer who designed floating solar panels that float on large bodies of water, and require very demanding weather resistance in harsh environments. Smartbatch™ Color and Additive Concentrates offered unparalleled UV weathering protection color concentrates for our customer’s solar power stations. Smartbatch™ enhanced the customer’s power generation efficiency by 10%, while providing shielding to prevent algae growth.

These solutions helped one of our customers satisfy high Vehicle Interior Air Quality (VIAQ) standards without compromising desired surface finish, gloss level, mechanical property or density. Maxxam™ helped the customer reduce the VOCs and fogging in their newly launched models by up to 80%, without compromising desired mechanical property or surface finish. Onflex™ Lo TPE helped the same customer replace traditional PU foaming materials for HVAC sealing components, which greatly improved the VOC levels to meet local vehicle interior air quality standards.

Avient developed new recycled-content materials to enable its customers to achieve their goals and add options for the circular economy. By using recycled content, the customer made significant strides toward the circular economy, conserved materials and reduced energy usage by over 65%. Additionally, for every one ton of plastic recycled, the customer saves planet Earth the equivalent of 1,000–2,000 gallons of gasoline.*