PolyOne Corporation Avient Corporation PolyOne Corporation

PolyOne Corporation PolyOne Corporation PolyOne Corporation

About Halo Smart Labs Halo Smart Labs develops life-safety products for the Smart Home/IoT market. Photo Copyright: Halo Smart Labs Photo Caption: Halo and Halo+ use advanced vinyl technology for long-term maintenance free performance Media contact Michelle Maniscalco Senior Manager, Marketing Communications PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com

As a packaging materials specialist, we strive to improve production efficiency, provide sustainability support, and offer innovative materials and technologies that benefit our customers globally.”   Avient Corporation provides specialized and sustainable materials solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Unique technologies that improve the recyclability of products and enable recycled content to be incorporated, thus advancing a more circular economy    

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 2 accounting and finance, international markets, physical sciences and technology, or the specialty materials industry; personal characteristics such as ethical standards, integrity, 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 diversity of backgrounds and experience they will bring to the Board, including diversity with respect to race, gender, national origin, ethnicity, nationality, and sexual orientation, as well as differences in viewpoint, background and skill; and the needs of the Company from time to time Corporate Governance

New Colorant Chromatics™ Metallic Effect Pre-Colored Sulfone Formulations Launched by Avient Corporation at Fakuma 2024 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

Avient Corporation Corporate Governance Guidelines The Board of Directors (the “Board”) of Avient Corporation (the “Company”) has adopted the following Corporate Governance Guidelines (the “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.

Avient Corporation provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. 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

LAS VEGAS – March 31, 2025 – Avient Corporation, an innovator of materials solutions, is pleased to announce a successful collaboration with its valued customer, Resia, a vertically integrated real estate company that specializes in developing, building, and managing multifamily communities, and through its Resia Manufacturing (RM) subsidiary, specializes in the fabrication of bathroom and kitchen pods for modular construction across the United States. By intersecting our broad portfolio of technologies with the product roadmaps of our customers, we help create differentiated and high-performance products that make the world better and more sustainable. Media Contact Nicole DeChant Avient Corporation nicole.dechant@avient.com

Developed by a global team, many of whom work in the four Avient ColorWorks™ design and technology centers around the world, this unique tool has become invaluable to plastic product designers and marketing professionals seeking help in making more informed color choices for new products and packaging.  Avient ColorWorks also offers seminars at its four design and technology centers around the world, as well as at selected conferences and customer sites. Michelle Maniscalco Senior Manager, Marketing Communications Avient Corporation +1 440-930-1988 michelle.maniscalco@avient.com