Avient experts will be on hand to share insights on technologies and services that address recycling challenges. Media contact Nicole DeChant  Avient Corporation  nicole.dechant@avient.com Company Officers

Avient Corporation provides specialized and sustainable materials solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Media Contact Jennifer Huang Avient Corporation jennifer.huang@avient.com   Company Officers

Sustainability experts from Avient will be on hand to help address recycling challenges in packaging, drawing on research conducted at Avient’s CycleWorks™ Innovation Center that focuses on mechanical recycling challenges and solutions.   Media contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

When added to the recycled mixed polymers, Cesa Unify A4R addresses the common material degradation that occurs during the recycling process. Media contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

Our new reSound REC family of PCR-based TPEs addresses these challenges and reflects Avient’s firm commitment to sustainability and accelerating the transition towards circularity.” Trade Media Relations Jennifer Huang  Senior Manager, Marketing Communications Asia  Avient Corporation   +86 21 60284888  jennifer.huang@avient.com  Company Officers

This product is an example of our ongoing commitment to using material science to help address this growing need in various ways,” said Matt Mitchell, director, global marketing, Specialty Engineered Materials at Avient. Media contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

To address the challenges, we designed our new materials to give leading automakers and top-tier automotive suppliers the ultimate next-level option. Marketing Communications Manager, Asia PolyOne Corporation +86 21 6028 4888 jennifer.huang@avient.com Company Officers

Governance and Corporate Responsibility Charter Proposed Revisions March 2025 Final and Approved.pdf AVIENT CORPORATION GOVERNANCE AND CORPORATE RESPONSIBILITY COMMITTEE CHARTER Membership The Governance and Corporate Responsibility Committee (the “Committee”) of the Board of Directors (the “Board”) of Avient Corporation (the “Company”) will consist entirely of directors who meet the definition of “independent” as set forth in the Corporate Governance Standards of the New York Stock Exchange. Corporate Governance. The Committee may appoint subcommittees from time to time as needed and may delegate authority to such subcommittees or to officers of the Company, when appropriate, consistent with applicable laws, regulations, and listing standards.

PolyOne Corporation PolyOne Corporation Rose, Vice President, Corporate Communications, PolyOne Corporation, +1 440-930-3162, kyle.rose@avient.com

Avient Code of Ethics Applicable to Senior Financial Officers Code of Ethics applicable to senior financial officers Avient Company Officers