Special items, before tax(1) 1) Rose, Vice President, Corporate Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

Special items, before tax(1) 1) Rose, Vice President, Corporate Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

December 1, 2014 DeLuca Vice President, Investor Relations PolyOne Corporation +1 440-930-1226 isaac.deluca@avient.com Rose Director, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com

February 1, 2023 NEW DELHI, India – February 1, 2023 – For the first time in 5 years, Avient will participate in PlastIndia 2023, where it will be exhibiting its latest innovations and initiatives of sustainable and specialized material solutions for the plastics industry. Avient will exhibit at Hall 5/First Floor/Booth A5 at PlastIndia 2023 in Pragati Maidan, New Delhi, from February 1 to 5.

DeLuca Vice President, Investor Relations PolyOne Corporation +1 440-930-1226 isaac.deluca@avient.com Rose Director, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com Trade Media Contact: Michelle Maniscalco Marketing Communications Manager, North America PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com

TEMPEST GREY SOLID 7960-1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

ULTIMATE UV 390.PG-1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

GLOBAL TRIPLE A-1 280-023-21 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

TR YELLOW Q920-2-1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

ROSEWOOD-ALT 1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)