Commenting on the company's outlook, Mr. Investor Relations Contact: Eric R. Investor Contacts

Investor Relations Contact: Isaac D. Media Relations Contacts Company Officers

He joined Avient in 2010 and has since delivered success in multiple positions throughout the company thereafter.

BOS B A T T E R Y S F R A M E • Recycled materials where possible • Non-halogen flame retardant performance to V0 rating • BOS company color RAL9004 (on visible parts) • Thermal performance for some parts • High strength at low thickness for load-bearing parts • Provided multiple polymer solutions for the battery frame including recycled nylon, thermoplastic elastomers and thermally conductive formulations • Utilized recycled nylon with up to 35% glass fiber content to provide high strength for load-bearing parts at a low thickness to minimize weight • Enabled customer to launch a new innovative battery system with a modular design for use in multiple applications – maximizing the working life of the battery Nymax™ REC Recycled Nylon Formulations and Therma-Tech™ Thermally Conductive Formulations KEY REQUIREMENTS WHY AVIENT?

Inglis has served in Finance leadership roles since joining the company in 2011 from Ernst & Young.

Just prior to joining Avient in 2018, he was vice president of Strategy at Hexcel Corporation, responsible for the company’s M&A strategy and execution.

Past performance demonstrates that our strategy and execution are working • Megatrends align with our strengths • Innovation and services provide differentiation • Innovation and services provide differentiation and competitive advantage • Strong and proven management team driving growth and performance The New PolyOne: A Specialty Growth Company 2015 Target: $2.50 Adjusted EPS Page 107 Thank You Questions & Answers Page 108

This document is issued by the Company subject to SGS General Conditions of certification services available on Terms and Conditions | SGS.

PLATINUM REGISTRATION INC. 1040 South Gaylord Street, Suite 71, Denver, CO 80209 www.platinumregistration.com | info@platinumregistration.com Polystrand, Inc. 8375 Highfield Parkway, Englewood, CO, 80112 Is certified by PLATINUM REGISTRATION as a company that has developed, implemented and maintains a quality management system that conforms to the requirements of the following International Standards: ISO 9001:2015 (Requirements not applicable:8.5.5 Post-delivery activities.)

462307-2021-AQ-RGC-RvA Initial certification date: 23 June 2021 Valid: 24 June 2024 – 23 June 2027 This is to certify that the management system of Avient China Company Limited No. 188, Quanzhou Road, Zhongxin Suchu High-Tech Industrial Development Park, Chuzhou, Anhui, China has been found to conform to the Quality Management System standard: GB/T 19001-2016 / ISO 9001:2015 This certificate is valid for the following scope: Design and Manufacture of Color Concentrates, Filling Concentrates and Additive Concentrates http://www.dnv.com/assurance