Event Type: Corporate Conference Call Q2 Avient Corporation Earnings Conference Call More Q1 Avient Corporation Earnings Conference Call More

CLEVELAND – May 19, 2023 – Avient Corporation, a premier provider of specialized and sustainable material solutions and services, is proud to announce it has earned the LUXE PACK “in green” award, highlighting a Corporate Social Responsibility (CSR) initiative.   Media contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

PolyOne Corporation, with 2014 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. Michelle Maniscalco Marketing Communications Manager, North America PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com Company Officers

PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. Matt Defosse Marketing Communications Manager, Europe PolyOne Corporation +49 6406-832-061 matt.defosse@avient.com Company Officers

Patterson, Chairman, President and Chief Executive Officer, Avient Corporation. 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. Rose Vice President, Corporate Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com http://www.avient.com/ http://www.avient.com/news mailto:giuseppe.disalvo@avient.com mailto:kyle.rose@avient.com NEWS RELEASE

Patterson, president and chief executive officer, PolyOne Corporation. Richardson, executive vice president and chief financial officer, PolyOne Corporation said, “We continued our strong track record of converting earnings to cash, generating approximately $95 million in free cash flow in the quarter. Company Officers

Ashish Khandpur, President and Chief Executive Officer of Avient Corporation. 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. Rose Vice President, Corporate Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com

PolyOne Corporation chairman, president, and chief executive officer, executive vice president and chief financial officer,

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Antonello Decortes, Global Product Manager at Avient Corporation. Media Contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers