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

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

Chairman, President, and Chief Executive Officer, For the same reasons, the Company is unable to address the probable significance of the unavailable information. Corporate

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.

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.

What is the first step I should take in addressing this issue? Company Officers Avient Corporation Privacy Statement

– To help medical device manufacturers develop ways to address healthcare-associated infections (HAIs), PolyOne is launching two new CLEVELAND – By collaborating closely with PolyCase Ammunition, PolyOne Corporation has helped its innovative customer create and impr Company Officers

Chairman, President and Chief Executive Officer, Senior Vice President and Chief Financial Officer, For the same reasons, the Company is unable to address the probable significance of the unavailable information.

Event Type: Corporate Conference Call Q1 Avient Corporation Earnings Conference Call More Q4 Avient Corporation Earnings Conference Call More

President and Chief Executive Officer of Senior Vice President and Chief Financial Officer of For the same reasons, the Company is unable to address the probable significance of the unavailable information.