9:00 a.m. 12:00 p.m.

8:00 a.m. 8:00 a.m.

NOTICE OF 2020 ANNUAL MEETING OF SHAREHOLDERS Thursday, May 14, 2020 9:00 a.m.

Webcast Details Avient will host a webcast on Tuesday, July 26, 2022 at 8:00 a.m.

Building off our strong performance in 2024, I remain optimistic in our team’s ability to achieve the long-term financial targets we shared at Investor Day last December.” 3 Webcast Details Avient will provide additional details on its 2024 fourth quarter and full year results, as well as its 2025 full year outlook during its webcast scheduled for 8:00 a.m.

Webcast Details Avient will provide additional details on its 2025 first quarter and its 2025 full year outlook during its webcast scheduled for 8:00 a.m.

9:00 a.m.

At the other end of the scale, soft gels and soft foam rubbers are measured using the Shore 00 scale.

Clarke Circle Bethel, CT 06801, USA 电话：+1 800 242 2296 info.usa@colorant-chromatics.com 生产 Colorant Chromatics Ab （ 芬兰 ） Kroklundsvägen 346 AX-22 320 Ödkarby, Åland, Finland 电话：+358 18 488 00 info.aland@colorant-chromatics.com 上海蔻兰色料科技有限公司（中国） 中国上海浦东新区金苏路200号金桥瑞邑 商务园C栋2楼，邮编：201206 电话：+86 21 60284888 info.china@colorant-chromatics.com 销售公司 Colorant GmbH （ 德国 ） Justus-Staudt-Strasse 1, D-65555 Limburg-Offheim, Germany 电话：+49 6431 98 99 0 info.germany@colorant-chromatics.

SHAREHOLDER INQUIRIES If you have any questions concerning your account as a shareholder, name or address changes, inquiries regarding stock certificates, or if you need tax information regarding your account, please contact our transfer agent: Equiniti Trust Company 1110 Centre Pointe Curve, Suite 101 Mendota Heights, MN 55120-4100 Phone: 1-855-598-2615 or 1-651-450-4064 www.shareowneronline.com Additional information about PolyOne, including current and historic copies of Annual Reports on Form 10-K and other reports filed with the Securities and Exchange Commission, is available online at www.polyone.com or free of charge from: Investor Affairs Relations PolyOne Corporation 33587 Walker Road Avon Lake, Ohio 44012 Phone: 440-930-1000 ANNUAL MEETING The annual meeting of shareholders of PolyOne will be held May 14, 2020 at 9:00 a.m. at PolyOne’s Corporate headquarters, 33587 Walker Road, Avon Lake, Ohio.