Edgetek™ Engineered Polymer Formulations achieved a UL 94 V-0 flammability rating certification for server cabinets

reFlex™ 100 as an accelerator discussion, test formulations, paste viscosity, gel rates, mechanical properties and heat stability

reFlex™ 100 as an accelerator discussion, test formulations, paste viscosity, gel rates, mechanical properties and heat stability

reFlex™ 100 as an accelerator discussion, test formulations, paste viscosity, gel rates, mechanical properties and heat stability

Optica™ toners applications, implementation, addition rate, performance, supply and contact details

Webcast Details Avient will provide additional details on its 2025 first quarter and its 2025 full year outlook during its webcast scheduled for 8:00 a.m. 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; 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, tariffs and any recessionary conditions. 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. 5 Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G.

Winona, Minnesota 8. Barcelona, Spain 8. Brampton, Ontario, Canada 8.

Of those collected, 81% of the suppliers reported an EcoVadis medal rating in their overall scorecard evaluation.

Manufactured continuously, at a much higher rate than standard filament winding

Lightweight at less than half the weight of steel springs, with high spring rate and deep deflection for stronger springs and overall cost savings