¹Virex® is a trademark of Diversey, Inc.; CaviCide™ is a trademark of Metrex Research, LLC; Vesphene® is a trademark of Steris Corporation; and Sani-Cloth® is a trademark of Professional Disposables International, Inc. Michelle Maniscalco Senior Manager, Marketing Communications Avient Corporation +1 440-930-1988 michelle.maniscalco@avient.com Company Officers

For the same reasons, the Company is unable to address the probable significance of the unavailable information. Clariant Revenue Synergies Avient Corporation 19 Avient Corporation 20 Customer Experience I N S P I R A T I O N . D is tr ib u tio n Avient Corporation 132 A V N T ex .

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

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

PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. Media contacts 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. 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. Media Contact Jennifer Huang Marketing Communications Manager, Asia PolyOne Corporation +86 21 50802923 jennifer.huang@avient.com Company Officers

PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. Media contact Jennifer Huang Marketing Communications Manager, Asia PolyOne Corporation +86 21 50802923 jennifer.huang@avient.com Company Officers

Our purpose at Avient Corporation (NYSE: AVNT) is to be an innovator of materials solutions that help our customers succeed, while enabling a sustainable world. Media Contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

CLEVELAND – May 18, 2021 – Avient Corporation, a premier provider of specialized and sustainable material solutions and services, today announced the launch of a consolidated range of plastisol special effect inks and additives. Media contact Michelle Maniscalco Senior Manager, Marketing Communications Avient Corporation michelle.maniscalco@avient.com Company Officers