Swanson Director, Investor Relations PolyOne Corporation +1 440-930-1018 eric.swanson@avient.com Rose Vice President, 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

Investor contact: Isaac 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

Swanson Director, Investor Relations PolyOne Corporation +1 440-930-1018 eric.swanson@avient.com Rose Vice President, 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

The HC8920 grades are formulated to meet certification to UL94 5VA at 3.0 mm, V-0 at 1.5 mm, V-1 at 0.75 mm. NOTE: On July 1, 2020, PolyOne and Clariant Masterbatches joined together as Avient, a new kind of materials company focused on conquering customer challenges and unlocking the potential for innovation and sustainability around the globe. Michelle Maniscalco Senior Manager, Marketing Communications Avient Corporation +1 440-930-1988 michelle.maniscalco@avient.com

In some instances, it also was subject to UL’s Vertical Wire Class 1 rating for flame resistance (VW-1). It also complied with the critical standards – UL 4703 for photovoltaic wire, UL 44 for indoor use and VW-1 for flame resistance – enabling streamlined production of wires and cables that meet virtually all specifications for solar USE-2 applications.

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FTMB (1% 9605 Yellow) FDA 950 REDPWDMB (1% Sudan M Red 380) Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

EXCELITE TS-1 AMPMMA HQR 1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

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

X ST 12691-001-1 X MF-13919-001-1 Natural Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)