For more information, visit https://www.avient.com.  

For more information, visit https://www.se.com/ww/en/.  

The company noted that GAAP EPS includes special items (Attachment 3) and intangible amortization expense (Attachment 1). https://www.avient.com/news 4 Pro Forma for Acquisition of Avient Protective Materials business (APM) On September 1, 2022, the company acquired DSM’s Protective Materials business, the foundation of which is the renowned technology and globally admired brand of Dyneema®, the World’s Strongest Fiber™. https://www.avient.com/investors https://edge.media-server.com/mmc/p/a8tcrg4m https://www.avient.com/investors https://register.vevent.com/register/BI125445d5780d4c898d63ec3c1fa53045 https://www.avient.com/investors/events-presentations 5 About Avient Avient Corporation (NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world.

TERMS AND CONDITIONS These Terms and Conditions govern the sale of Products to another (“Buyer”) by Avient Corporation and its affiliates (“Seller”). 1. A failure by Buyer to make the payment for the Products delivered in accordance with it its terms shall constitute a default for which no notice of default (ingebrekestelling) is required. Terms and Conditions (July 1, 2023)

For more information, visit https://www.avient.com. Investor Relations Contact: Giuseppe (Joe) Di Salvo, Vice President, Treasurer and Investor Relations, Avient Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com, or Media Contact: Kyle G. Rose, Vice President, Marketing and Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

For more information, visit https://www.avient.com. Investor Relations, Giuseppe (Joe) Di Salvo, Vice President, Treasurer and Investor Relations, Avient Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com; Media, Kyle G. Rose, Vice President, Marketing and Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

Polyone terms and conditions of sale France - updated September 2009 - 1 - PAI-376900v1 TERMS AND CONDITIONS OF SALE The Terms and Conditions herein apply to the sale of PolyOne products 1. Seller is entitled to rescind the sale agreement in the event that Buyer is in default of the purchase price payment by more than fifteen (15) days. In all events, Seller's liability with respect to default of delivery or untimely delivery shall not exceed 5 % of the invoice value of the deliveries, excluding any other claims.

AVNT-2022.06.30-News Release 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Second Quarter 2022 Results • Second quarter sales grew to $1.3 billion, a 5% increase over the prior year quarter, and an all-time quarterly record • GAAP EPS increased 24% to $0.92 compared to $0.74 in the prior year quarter • Adjusted EPS increased 13% to $0.98 compared to $0.87 in the prior year quarter, exceeding second quarter guidance of $0.92. https://www.avient.com/sustainability https://www.avient.com/investors https://edge.media-server.com/mmc/p/r2x4n7pt https://www.avient.com/investors https://register.vevent.com/register/BIb9438661fe984c4f9a842829169d2868 http://www.avient.com/investors/events-presentations 3 About Avient Avient Corporation (NYSE: AVNT), with 2021 revenues of $4.8 billion, provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. # # Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G.

For more information, visit https://www.alphatoolandmold.com. Michelle Maniscalco Senior Manager, Marketing Communications PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com