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AVNT-2023.06.30-News Release 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Second Quarter 2023 Results • GAAP EPS of $0.24 includes special items and amortization expense • Adjusted EPS of $0.63 exceeded guidance of $0.60, driven by better-than-projected margins in both segments • Full year adjusted EPS guidance of $2.40 maintained reflecting continued weak demand conditions, offset by adjusted EBITDA margins expected to increase from 15.6% to 16.0% for the year • Most recent Sustainability Report published, highlighting the company’s progress on ESG initiatives focused on People, Products, Planet and Performance • Sustainability Day for investors to be held on September 20th will focus on Avient’s sustainable solutions portfolio and the demand trends that will drive long-term growth CLEVELAND – July 27, 2023 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable solutions, today announced its second quarter 2023 results. Compared to our prior adjusted EPS expectations, raw material deflation as well as improving mix from composites and sustainable solutions positively impacted the quarter and more than offset weaker demand conditions.” 2 “Sequentially, we’ve seen modest improvement in Asia, but demand across other regions remains sluggish, particularly in Europe, as consumers remain cautious with continued inflation and rising interest rates,” Mr. We are looking forward to sharing how and where our material science is helping customers achieve their sustainability goals and the megatrends that are underpinning the future growth of our sustainable solutions portfolio.”

GEORGE INGLIS Vice President, Corporate Controller George Inglis is Vice President, Corporate Controller of Avient Corporation, a premier provider of specialized and sustainable material solutions and services.

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AVIENT SOLUTION COLOR + PERFORMANCE LEARN MORE © 2022, Avient Corporation, All Rights Reserved https://www.avient.com/sites/default/files/2022-02/Additives%20and%20Colorants%20for%20PP-R%20Pipe%20Systems%20Application%20Bulletin.pdf

AVERY JOHNSON Vice President, Tax Avery Johnson is vice president, tax, of Avient Corporation, a premier provider of specialized and sustainable material solutions and services.

KRISTEN GAJEWSKI Chief Human Resources Officer Kristen Gajewski is Senior Vice President, Chief Human Resources Officer at Avient Corporation, a premier provider of specialized and sustainable material solutions and services.

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PEDERSON Senior Vice President, President of Specialty Engineered Materials Chris Pederson is senior vice president, president, Specialty Engineered Materials, for Avient Corporation, a premier provider of specialized and sustainable material solutions and services.