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

Telephone: +1 440 930 1000 Fax: +440 930 3064

Equiniti Trust Company 1110 Center Point Curve, Suite 101 Mendota Heights, MN 55120-4100 Phone: 1-800-401-1957 www.shareowneronline.com

LIQUID COLOR GREEN 484-10278-1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

X ET-16351-01-1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

BRONZE (BV4-1) Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

HL1-FROST BEIGE/PPRO-1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

CONCENTRADO 1% VITÓN Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

BLUE T215-1-4 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

X ET-6790-005-1 Natural Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)