PolyOne Board Elects Robert Abernathy as Director... Board of Directors

Swanson, director, Investor Relations, will present at the Wells Fargo 2015 Industrial and Construction Conference. Media Contact: Kyle Rose Director, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com

Avient Elects Neil Green and Ernest Nicolas to Board of Directors... Board of Directors

Board of Directors Female or U.S. A company’s carbon footprint includes all emissions from the supply chain, logistics, usage and disposal of all products. Our Board also represents a balanced mix of fresh perspectives from our newer Directors and more seasoned perspectives from our longer tenured Directors.

Electricity, fuel, logistics and raw material costs could cause volatility in our results. GOFF Director February 22, 2023 Gregory J. PREETE Director February 22, 2023 Kerry J.

Sincerely, Members of the Governance and Corporate Responsibility Committee Avient Board of Directors Message from the Governance and Corporate Responsibility Committee Avient Board of Directors Sandra Beach Lin Richard Fearon Gregory Goff Kerry Preete Dr. Avient’s Chief Financial Officer presents Management’s ERM analysis to Avient’s Board of Directors on an annual basis. Our Board believes that corporate governance is enhanced when a substantial majority of the directors are independent and when all directors have demonstrated substantial professional accomplishment and leadership in their careers.

Sincerely, Members of the Governance and Corporate Responsibility Committee Avient Board of Directors Message from the Governance and Corporate Responsibility Committee Avient Board of Directors Sandra Beach Lin Richard Fearon Gregory Goff Kerry Preete Dr. Avient’s Chief Financial Officer presents Management’s ERM analysis to Avient’s Board of Directors on an annual basis. Our Board believes that corporate governance is enhanced when a substantial majority of the directors are independent and when all directors have demonstrated substantial professional accomplishment and leadership in their careers.

Guided by their initiative to develop capabilities that provide additional protection for soldiers while reducing time and logistic requirements,1 the U.S. With our hardware fabrication capabilities and Avient’s knowledge of composite ballistic protection technology, we were able to create modular systems that reduce time and logistic requirements for our brave soldiers.” 1 https://www.erdc.usace.army.mil/Missions/Military-Engineering/Deployable-Force-Protection-Demo/ To learn more about ballistic resistant solutions from Avient, visit avient.com or click to request a quote.

GOFF President and Chief Executive Officer, Tesoro Corporation and Chairman and Chief Executive Officer, Tesoro Logistics Committees: 3, 4 GORDON D. Goff Director Date: February 12, 2013 /S/ GORDON D. GOFF President and Chief Executive Officer, Tesoro Corporation and Chairman and Chief Executive Officer, Tesoro Logistics Committees: 3, 4 GORDON D.

General Policy: The Board of Directors of Avient Corporation (the “Company”) has determined, consistent with the Company’s Code of Conduct, that it is the Company’s policy to comply with all applicable federal and state securities laws, including those relating to buying or selling securities of the Company. These guidelines include the requirement that plans only be entered into during a time other than during a blackout period and that they include a waiting period thereafter before the first trade pursuant to the trading plan, the length of which varies depending on whether or not you are a director or officer of the Company. 13. Revised: December 20, 2024 ANNEX A COVERED EMPLOYEES All Directors All Elected Officers All Appointed Officers Assistant Controller Executive Assistants to Covered Employees Corporate Communications/Investor Relations (all levels) Internal Audit VP, Directors, Managers and Staff of Audit (all levels), Tax Managers and Tax Analysts, Staff of Tax (all levels) Directors, Managers and Staff, Mergers and Acquisitions and functional professionals supporting Mergers and Acquisitions (including Legal professionals) All Other Employees (including Finance and IT employees) with access to full quarterly results within the Avient Systems Secretaries and Direct-Reporting Assistants to any Covered Employee Financial and Business Consultants who have undertaken to comply with this policy Revised: December 20, 2024 ANNEX B Please access the PeopleLink home page and search for “pre-clearance” after clicking “My Help” General Counsel: Amy M.