Color & Additive Solutions for Biopolymers In recent times, interest in using biopolymers has grown in several industry sectors. The pigments and ingredients contained in Avient’s bio colorants have been tested in independent laboratories who assessed the compliancy of those materials according to standard EN 13432 for content of heavy metals, and toxicity to plants. Processing conditions can cause material properties to shift from the values stated in the information.

AVNT-2024.03.31-News Release 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces First Quarter 2024 Results • First quarter GAAP EPS from continuing operations of $0.54 compared to $0.23 in the prior year quarter • First quarter adjusted EPS of $0.76 exceeded guidance of $0.68 primarily as a result of better-than-expected customer demand from defense applications and lower raw material costs • First quarter adjusted EPS increased 21% over the prior year driven by improved margins from lower raw material costs and favorable mix, and lower net interest expense • Revised 2024 full-year adjusted EPS guidance range to $2.50 to $2.65, from prior guidance of $2.40 to $2.65 given strong first quarter results; Revised full-year guidance range reflects 6% to 12% growth in adjusted EPS over the prior year CLEVELAND – May 7, 2024 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable materials solutions, today announced its first quarter results for 2024. About Avient Avient Corporation (NYSE: AVNT) provides specialized and sustainable materials solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Examples include: • Dyneema®, the world’s strongest fiber™, enables unmatched levels of performance and protection for end-use applications, including ballistic personal protection, marine and sustainable infrastructure and outdoor sports • Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy • 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 • Sustainable infrastructure solutions that increase energy efficiency, renewable energy, natural resource conservation and fiber optic / 5G network accessibility Avient is certified ACC Responsible Care®, a founding member of the Alliance to End Plastic Waste and certified Great Place to Work®.

IRWIN Senior Vice President, New Business Development & Marketing Excellence Mike Irwin is Senior Vice President, New Business Development & Marketing Excellence for Avient Corporation, the world’s premier provider of specialized and sustainable material solutions and services. Irwin holds a bachelor’s degree in Materials Science and Engineering from The Pennsylvania State University and an MBA from Arizona State University’s W.P. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com https://www.avient.com/