Annual Repor t | 2024 2 STOCK EXCHANGE LISTING Avient's Common Stock is listed on the New York Stock Exchange, Symbol: AVNT 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, LLC 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 Avient, 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.avient.com or free of charge from: Investor Relations Avient Corporation 33587 Walker Road Avon Lake, Ohio 44012 Phone: 1-440-930-1000 ANNUAL MEETING The annual meeting of Avient will be held virtually via live webcast at 9:00 a.m.

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Microsoft PowerPoint - AVNT Investor Day V40 (Print) Investor Day 2021 (NYSE: AVNT) Shaping a Sustainable Future December 9, 2021 Agenda 8:00 WELCOME BREAKFAST 9:00 WE ARE AVIENT: Bob Patterson 9:15 BETTER TOGETHER AND CUSTOMER EXPERIENCE: Norbert Merklein 9:45 LONG-TERM ORGANIC GROWTH DRIVERS: Sustainable Solutions: Michael Garratt and Walter Ripple Healthcare: Cathy Dodd 10:45 BREAK 11:00 Composites: Chris Pederson and Matt Reinhardt Growth in Asia and Latin America: Woon Keat Moh INNOVATION: Where Are We Going Next? Vinod Purayath 12:00 SUMMARY: Jamie Beggs 12:20 AVIENT – AN INVESTMENT IN SUSTAINABLE GROWTH: Bob Patterson 12:30 Q&A 1:00 LUNCH 2Avient Corporation Disclaimer Forward-Looking Statements In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995.

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The company noted net proceeds from the Distribution sale are being used to retire its $600 million 2023 Senior Unsecured Notes and pay down $150 million of its term loan debt as shown below. 3 More details will be provided on the company's third quarter performance and full year outlook during its webcast scheduled for 8:00 a.m. Webcast Details Avient will host a webcast on Wednesday, November 2, 2022 at 8:00 a.m.

Avient will provide additional details on its 2022 fourth quarter and full year performance and 2023 outlook during its webcast scheduled for 8:00 a.m. Webcast Details Avient will host a webcast on Wednesday, February 15, 2023 at 8:00 a.m.

The Company noted it will provide more details on its 2021 outlook during the webcast scheduled for 9:00 a.m. In addition, a recording of the audio will be available for one week, beginning at 12:00 p.m.

Avient will provide additional details on its 2023 fourth quarter performance and 2024 outlook during its webcast scheduled for 8:00 a.m. Webcast Details Avient will host a webcast on Wednesday, February 14, 2024 at 8:00 a.m.

Avient's investor day will be held at the New York Stock Exchange beginning at 10:00 a.m. Webcast Details Avient will provide additional details on its 2024 third quarter results and 2024 full-year outlook during its webcast scheduled for 8:00 a.m.

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