PolyOne Corporation PolyOne Corporation PolyOne Corporation

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. These factors may include, among others: business or professional experience; knowledge and skill in certain specialty areas such as accounting and finance, international markets, physical sciences and technology, or the specialty materials industry; personal characteristics such as ethical standards, integrity, 2 judgment, leadership, and the ability to devote sufficient time to the affairs of the Company; substantial accomplishment with demonstrated leadership capabilities; freedom from outside interests that conflict with the Company’s best interests; the unique backgrounds and experience they will bring to the Board, including differences in viewpoint, background and skill; and the needs of the Company from time to time. Corporate Governance.

LAS VEGAS — February 17, 2025 — Today, Avient Corporation, an innovator of materials solutions, announced it will highlight its comprehensive portfolio of advanced composite technologies, including its new Hammerhead™ FR Flame Retardant Composite Panels, at the National Association of Home Builders (NAHB) International Builders’ Show (IBS) in Las Vegas, Nevada, from February 24 to 26.  Through the collaboration of a cross-functional team, we harnessed Avient’s materials science and product development expertise to develop and incorporate proprietary flame retardant technology into the panel material formulation. Media Contact Nicole DeChant Avient Corporation nicole.dechant@avient.com

This includes technologies for lightweighting, colorants for secondary paint replacement, and bio-polymers. Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy Media contact Nicole DeChant Avient Corporation nicole.dechant@avient.com

SHANGHAI – August 26, 2020 – Avient Corporation, a premier provider of specialized and sustainable material solutions and services, will be exhibi Avient Develops New Dairy Packaging Additive Technology to Meet TiO2 Restrictions POMMERLOCH, Luxembourg – August 25, 2020 – Avient Corporation, a premier provider of specialized and sustainable material solutions and services,

PolyOne Announces Leadership Appointments Avient Develops New Dairy Packaging Additive Technology to Meet TiO2 Restrictions Training and Development

PolyOne Corporation PolyOne Corporation Her technical expertise, proven leadership and broad understanding of key end markets for

Leadership, EHS&S-PS, Facility Services, Design & Development, Information Technology, Sourcing, Logistics, Legal, and Human Resources Certificate No: 65537 Certification Date: 29 SEP 2023 Effective Date: 27 FEB 2025 Expiration Date: 27 SEP 2026 Revision Date: 05 MAR 2025 Dominic Townsend, PresidentDominic Townsend, President Copyright as of the Effective Date, ABS Quality Evaluations, Inc. Leadership, EHS&S-PS, Facility Services, Design & Development, Information Technology, Sourcing, Logistics, Legal, and Human Resources 33587 Walker Road Avon Lake OH 44012 United States Avient Corporation HQ Responsible Care Corporate Support Activities in Sr. Leadership, EHS&S-PS, Facility Services, Design & Development, Information Technology, Sourcing, Logistics, Legal, and Human Resources 33587 Walker Road Avon Lake OH 44012 United States Avient Corporation Design and Manufacture of Colour and Additive Concentrates, Thermoplastic Resins and Specialty Compounds Kornkamp 50 Ahrensburg Schleswig- Holstein 22926 Germany Avient Corporation - Albany Design and Manufacture of Colorants and Additives for Plastics 4 Rothwell Ave, PO Box 300-009 Auckland 0632 New Zealand Avient Corporation Avon Lake Color Design and Manufacture of Specialty Engineered Thermoplastics 33587 Walker Road, Building 416 Avon Lake OH 44012 United States Avient Corporation Design and Manufacture of Specialty Engineered Thermoplastics Pol.

Corporate Governance Guidelines. All nominees should be individuals of substantial accomplishment with demonstrated leadership capabilities. Succession Planning and Management Development The Board regularly reviews succession planning for the Chief Executive Officer.

CLEVELAND – Innovative technologies from PolyOne Corporation have enabled Citroën to launch groundbreaking Airbump® exterior protective panels on the new C4 Cactus passenger car. PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. Media contact Matt Defosse Marketing Communications Manager, Europe PolyOne Corporation +49 6407-907-0386 matt.defosse@avient.com