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

X HC-5689-001-1 Natural Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

A43-1 RED 6535N Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

X RS 1884-001-1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

HUBMX711 OPAQUE BLUE 1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

1% AROSPERSE F-138 POWDER Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

ECCOH 5549/1 UV Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

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BLUE 4715 PE 1 RR Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

297264-1-EXPEC501 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)