By collaborating closely with our customers, we have developed an innovative technology that addresses end-user concerns, production efficiency needs, and regulatory requirements.” PolyOne Corporation, with 2013 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. Company Officers

Sustainability experts from Avient will be on hand to help address recycling challenges in packaging, drawing on research conducted at Avient’s CycleWorks™ Innovation Center that focuses on mechanical recycling challenges and solutions.   Media contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

Avient Corporation provides specialized and sustainable materials solutions that transform customer challenges into opportunities, bringing new products to life for a better world. Media Contact Jennifer Huang Avient Corporation jennifer.huang@avient.com   Company Officers

Avient experts will be on hand to share insights on technologies and services that address recycling challenges. Media contact Nicole DeChant  Avient Corporation  nicole.dechant@avient.com Company Officers

When added to the recycled mixed polymers, Cesa Unify A4R addresses the common material degradation that occurs during the recycling process. Media contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Company Officers

Our new reSound REC family of PCR-based TPEs addresses these challenges and reflects Avient’s firm commitment to sustainability and accelerating the transition towards circularity.” Trade Media Relations Jennifer Huang  Senior Manager, Marketing Communications Asia  Avient Corporation   +86 21 60284888  jennifer.huang@avient.com  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.

Event Type: Corporate Conference Call Q2 Avient Corporation Earnings Conference Call More Q1 Avient Corporation Earnings Conference Call More

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.

Avient is fully committed to protecting the environment by addressing climate change, conserving natural resources and preventing pollution. Avient’s Corporate EH&S Department defines the strategy and monitors performance against related management system standards.