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VIDEO NOTE: For a video detailing this project, click here: A Pioneering Vision Correction Solution for the Developing World Breakthrough technologies that minimize wastewater and improve the recyclability of materials and packaging across a spectrum of end uses Michelle Maniscalco Senior Manager, Marketing Communications PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com

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

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 Avon Lake, OH (SEM) Design and Manufacture of Specialty Engineered Thermoplastics 554 Moore Road Avon Lake OH 44012 United States 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 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. Industrial Valle del Cinca S/N Apartado , E-22300 Barbastro, Spain Avient Corporation Design and Manufacture of Colorants and Compounds for Fluoropolymer and High Temperature Polymers. 19 Francis J Clark Circle Bethel CT 06801 United States Avient Corporation Design and Manufacture of Colorants and Additives for Plastics 03 Street 02, VSIP 820000 Thuận An Binh Duong Vietnam Avient Corporation Design and Manufacture of Colorants and Additives for Plastics Lot 1232, MK. 15, Kawasan Industri, Kecil & Sederhana Butterworth Penang 14120 Malaysia Avient Corporation Design and Manufacture of Colorants and Additives for Plastics Autopista Medellín Km 2.5, Via Parcelas Km 1, Vereda Siberia , 250017 Cota, Colombia Ihsan Dede Cad. , 41448 Gebze, Türkiye Avient Corporation Design and Manufacture of Colorants and Additives for Plastics 2#, Nanyunsan Rd, Huangpu District, Science City, Guangzhou Hi-Tech Industrial Development Zone , 510663 Guangzhou, Avient Corporation Design and Manufacture of Colorants and Additives for Plastics Avenida 34-11, Zona 12 Complejo Parque Gobal , 01012 Guatemala City, Guatemala Avient Corporation Design and Manufacture of Specialty Engineered Thermoplastics Orhangazi Mah. 1683 Sok. WA- 06, Kalyan-Padgha Road Vashere Maharashtra 421302 India Avient Corporation - Vonore, TN Manufacture of Colorants and Additives for Plastics 245 Avecor Drive Vonore TN 37885 United States Avient Corporation Warehouse 225 Industrial Drive Vonore TN 37885 United States AVIENT BRASIL LTDA Sales; Design and Development; Technical assistance; Receipt; Production and Quality Control; Logistics; Supplies; Equipment – only for liquid; Maintenance and Calibration; Management and Human Resources.

PolyOne Corporation PolyOne Corporation PolyOne Corporation

With nearly 20 years of experience in R&D and scientific leadership, Dr. Purayath joined Avient in 2021to lead the development of emerging, next-generation and sustainable technologies globally for the company. At SanDisk Corporation, he held technical and engineering leadership positions over an eight-year period, building and leading a global team of engineers, whose success underpinned the growth of the company.

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

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.

DETROIT – PolyOne was recognized last night at the SPE Automotive Innovation Awards ceremony for its participation in developing an all-plastic SHANGHAI – PolyOne Corporation (NYSE: POL), a premier global provider of specialized polymer materials, services and solutions, has announced the la PolyOne Highlights Advanced Packaging Technologies at PACK EXPO 2014