PolyOne PolyOne PolyOne

PolyOne PolyOne PolyOne

PolyOne is also highlighting the recently launched Rome Black Label snowboard binding. About PolyOne To access PolyOne’s news library online, please go to www.polyone.com/news

Customers rely on PolyOne for the latest in material technology and technical expertise,” said James Mattey, marketing director, Performance Products & Solutions at PolyOne. About PolyOne PolyOne Corporation, with 2016 revenues of $3.3 billion, is a premier provider of specialized polymer materials, services and solutions. To access PolyOne’s news library online, please go to www.polyone.com/news.

Adding these materials to our North American portfolio enables us to foster innovation for our global healthcare customers,” says Barto Du Plessis, vice president PolyOne Asia, and general manager, Colorant Chromatics at PolyOne. About PolyOne To access PolyOne’s news library online, please go to www.polyone.com/news

In addition, entities such as trusts, foundations, partnerships, estates or other groups over which an employee has control may not buy or sell Company securities while the employee is in possession of such Inside Information. In order to ensure compliance with the policy, the Board of Directors of the Company has adopted the following additional procedures, which apply to (a) directors, officers and certain employees and representatives of the Company and of its affiliates, as specified in Annex A (“Covered Employees”), and (b) members of their immediate families, partnerships in which Covered Employees are a general partner; corporations in which Covered Employees, either singly or together with other Related Persons (as defined below), own a controlling interest; trusts of which Covered Employees are a trustee, settlor or beneficiary; estates of which Covered Employees are an executor or beneficiary; or any other group or entity where Covered Employees have or share with others the power to decide whether to buy Company securities (collectively, “Related Persons”). 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.

The presentation will be posted on PolyOne’s Investor Relations home page at www.polyone.com/investor About PolyOne To access PolyOne’s news library online, please visit www.polyone.com/news

The presentation will be posted on PolyOne’s Investor Relations home page at www.polyone.com/investor About PolyOne To access PolyOne’s news library online, please visit www.polyone.com/news

About PolyOne PolyOne Corporation, with 2014 revenues of $3.8 billion, is a premier provider of specialized polymer materials, services and solutions. To access PolyOne's news library online, please go to www.polyone.com/news Swanson Director, Investor Relations PolyOne Corporation +1 440-930-1018 eric.swanson@avient.com

Patterson, president and chief executive officer, PolyOne Corporation. About PolyOne To access PolyOne's news library online, please go to www.polyone.com/news.