Investor contact: Eric Swanson Director, Investor Relations PolyOne Corporation +1 440-930-1018 eric.swanson@avient.com Media contact: Kyle 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

EPS(1) EPS(1) 1)

To participate in the webcast, dial 1-844-835-7433 (domestic) or 1-914-495-8589 (international) and provide conference ID number 5289238.  To listen to this recording, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and provide conference ID number 5289238. Attachment 1

Domestic: 1-844-835-7433 International: 1-914-495-8589 Domestic: 1-855-859-2056

Microsoft Word - Terms and Conditions of Sale for Chile (English and Spanish Translation) TERMS AND CONDITIONS These Terms and Conditions govern the sale of Products to another (“Buyer”) by Avient Corporation and its affiliates (“Seller”). 1. Seller makes no Estos términos y condiciones rigen la venta de Productos a otros (“Comprador”) por parte de Avient Corporation y sus filiales (“Vendedor”). 1.

Microsoft Word - Terms and Conditions of Sale for Guatemala (English and Spanish Translation) TERMS AND CONDITIONS These Terms and Conditions govern the sale of Products to another (“Buyer”) by Avient Corporation and its affiliates (“Seller”). 1. No warranty is TÉRMINOS Y CONDICIONES Estos Términos y Condiciones regulan la venta de Productos a otro (“Comprador”) por parte de Avient Corporation y sus filiales (“Vendedor”). 1.

Microsoft Word - Terms and Conditions - Brazil (Clean 12-17-24) NAI-1524021340v5 TERMOS E CONDIÇÕES ESTES TERMOS E CONDIÇÕES REGEM A VENDA DE PRODUTOS A OUTRO ("COMPRADOR") PELA AVIENT CORPORATION E SUAS AFILIADAS (“VENDEDOR”). 1. TERMS AND CONDITIONS THESE TERMS AND CONDITIONS GOVERN THE SALE OF PRODUCTS TO ANOTHER (“BUYER”) BY AVIENT CORPORATION AND ITS AFFILIATES (“SELLER”). 1.

X ET 792-002-1 GRAY Q716-1-2 PC YELLOW Q510-3-1

XGT-39384-0002A-01-1 XST-39297-0002A-01-1 XST-37540-0003A-01-1

CHUTE CAP Q280-2-1 BLUE PP TETHER Q300-1-1 BLUE PE Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)