CLEVELAND – PolyOne Corporation, a premier global provider of specialized polymer materials, services and solutions, today announced the availa ANAHEIM, Calif. – To help medical device manufacturers develop ways to address healthcare-associated infections (HAIs), PolyOne is launching two new Company Officers

Avient Corporation has expanded its LubriOne™ portfolio to include a range of innovative new internally lubricated polymer formulations produced wit Avient Corporation addresses major trends and challenges in the polymer industry at Chinaplas 2024 with innovative colorants, additives, and services Company Officers

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

Corporate Governance Guidelines. March 2025 - Final and Approved version.pdf 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”). The office of Chairman of the Board may or may not be an officer position.

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 Company Officers

Name of Corporation Charter Number The articles are hereby amended by the Incorporators. Brown: Please be advised that the office of the Secretary of State has reviewed your pre- clearance request for the Certificate of Amendment for PolyOne Corporation. I have provided all the necessary information to complete the filing process with our office.

Office Furniture Task Chair LEADING OFFICE FURNITURE OEM T A S K C H A I R • Stiff yet extremely tough all-composite solution • Reduce part count by replacing mechanical tilt controls • Cost-effective material • Exceptional fatigue endurance to withstand million cycle deflection test • Enabled novel design by combining long glass fiber and unidirectional tape to meet performance and mass market cost targets • Formulated custom nylon material with minimal conditioned performance loss and smooth, fiber-free surface finish • Provided technical support during two-year product development cycle Complēt™ Long Glass Fiber PA66 Composite and Overmolded Unidirectional Tape Inserts KEY REQUIREMENTS WHY AVIENT? AVIENT SOLUTION FATIGUE RESISTANCE + PART CONSOLIDATION LEARN MORE Copyright © 2021, Avient Corporation. https://www.avient.com/products/engineered-polymer-formulations/high-temperature-polymer-formulations/compl%C4%93t-long-fiber-reinforced-structural-thermoplastics Leading Office Furniture OEM

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Message from the Governance and Corporate Responsibility Committee This multifaceted approach to addressing ESG matters reflects the company’s commitment to put thoughtful measures in place to tackle these difficult issues. Sincerely, Members of the Governance and Corporate Responsibility Committee, Avient Board of Directors