All Rights Reserved 2025 2 Disclaimer Forward-looking statements Certain statements contained in or incorporated by reference into this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995.

You can be confident that, in formulating and manufacturing our materials, we use sustainable practices to provide long-term product viability and sound environmental stewardship • You can expect that the materials we produce contain only ingredients that conform to accepted legal and regulatory compliance guidelines • You can trust that PolyOne materials meet the rigorous quality and safety management standards required across the globe • You can be certain that PolyOne meets or exceeds the material safety data reporting requirements of your country or region • When you choose PolyOne, you can be confident our products will help you meet or exceed today’s stringent compliance standards FROM PRODUCTS INTRODUCED IN THE LAST 5 YEARS 37% of specialty sales Photos: Last year PolyOne broke ground on a new manufacturing and R&D facility in Chuzhou, China.

Some grades, such as OnFlex™ G7700s and G7800s, and Dynaflex™ G7900s contain filler, which reduces their shrinkage.

Avient makes no representations, guarantees, or warranties of any kind with respect to the information contained in this document about its accuracy, suitability for particular applications, or the results obtained or obtainable using the information.

It contains all data points for questions that are answered or in progress. Row 1 (9.12.1) Product name Total Revenue by Total Consumption (9.12.2) Water intensity value 1144732.04 (9.12.3) Numerator: Water aspect Select from: ☑ Water consumed (9.12.4) Denominator Total Revenue from question 9.5 (9.12.5) Comment Intensity number calculated based on data found in 9.2.2 and 9.5 [Add row] 738 (9.13) Do any of your products contain substances classified as hazardous by a regulatory authority? Products contain hazardous substances Select from: ☑ Yes [Fixed row] (9.13.1) What percentage of your company’s revenue is associated with products containing substances classified as hazardous by a regulatory authority?

This includes: • Ensuring quality and timeframe of sustainability and other corporate disclosures contained in financial and other reports (e.g., Avient CDP Climate Change Questionnaire 2021 Tuesday, August 3, 2021 7 environmental) • Reviewing the Company’s cyber and data privacy programs • Reviewing and discussing with management and the internal and independent auditors’ compliance with the Company’s Code of Business Conduct and Ethics; reviewing and discussing with management, the general counsel and the independent auditor the Company’s compliance with laws and regulations; advising the Board with respect to the Company’s policies and procedures regarding compliance with the Company’s Code of Business Conduct and Ethics.

This includes: • Ensuring quality and timeframe of sustainability and other corporate disclosures contained in financial and other reports (e.g., environmental) • Reviewing the Company’s cyber and data privacy programs and providing risk oversight related to cyber-security and data protection • Reviewing and discussing with management and the internal and independent auditors’ compliance with the Company’s Code of Business Conduct and Ethics; reviewing and discussing with management, the general counsel and the independent auditor the Company’s compliance with laws and regulations; advising the Board with respect to the Company’s policies and procedures regarding compliance with the Company’s Code of Business Conduct and Ethics.