performance in prior periods without the effect of items that, by their nature, tend to obscure Investor Relations Contact: Joe Di Salvo, Vice President, Treasurer and Investor Relations, PolyOne Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com; Media Contact: Kyle G.

Avient is fully committed to protecting the environment by conserving natural resources and preventing pollution. Our Board maintains Audit ("AC"), Compensation ("CC"), Governance and Corporate Responsibility ("G&CRC"), and Environmental, Health and Safety ("EH&SC") committees. Name Age Director Since Independent Committee Membership (M=Member, C=Chair) AC CC G&CRC EH&SC Robert E.

With Maxxam LO, molders and OEM’s can embrace the evolving Vehicle Interior Air Quality (VIAQ) regulatory environment, and add tangible value for the end-consumer by enabling a more natural smelling interior cabin, free of unpleasant odors. KEY CHARACTERISTICS • Consistently achieves 3.0 per VDA 270 • Reduces VOC and emissions • Inherent heat stabilization • Customized physical property balance • Customized process flexibility • Natural, black, & custom colors possible TYPICAL USES PolyOne has designed Maxxam LO material for use in underhood automotive HVAC applications, including: • Housings • Ducts • Fasteners/connectors • Structural brackets www.polyone.com Copyright © 2018, PolyOne Corporation.

OnColor™ Naturals Colorants OnColor™ SC Super Concentrate Technologies Naturally.

OnColor™ Naturals Colorants OnColor™ Naturals Colorants OnColor™ SC Super Concentrate Technologies

OnColor™ Naturals Colorants OnColor™ SC Super Concentrate Technologies Naturally.

OnColor™ Naturals Colorants OnColor™ Naturals Colorants OnColor™ SC Super Concentrate Technologies

OnColor™ Naturals Colorants OnColor™ SC Super Concentrate Technologies Naturally.

Our Board maintains Audit ("AC"), Compensation ("CC"), Governance and Corporate Responsibility ("G&CRC"), and Environmental, Health and Safety ("EH&SC") committees. In addition, the table identifies the independent directors. 10 PROXY STATEMENT 2024 | Annual Meeting of Shareholders Name Age Director Since Independent Committee Membership (M=Member, C=Chair) AC CC G&CRC EH&SC Robert E. Estimated Future Payouts Under Equity Incentive Plan Awards (columns (f) and (g)) (3) Stock Appreciation Rights.

Name Age Director Since Principal Position Notable Skills and Experiences Inde- pendent Committee Membership* AC CC N&GC EH&SC Robert E. By refocusing the sales force on value and profits versus volumes, and emphasizing specialty businesses versus those more commodity in nature, Mr. Estimated Future Payouts Under Equity Incentive Plan Awards (columns (f) and (g)) (5) Stock Appreciation Rights.