Company: AVNT
Filing Date: 2025-03-27
Form Type: DEF 14A
Source: 0001122976-25-000019
Chunk: 5

Company: AVIENT CORP
Filing Date: 2025-03-27
Form: DEF 14A
Chunk 5
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.virtualshareholdermeeting.com/AVNT2025 . Shareholders will be able to vote their shares electronically during the Annual Meeting.

Shareholders as of the close of business on March 18, 2025, the record date for the Annual Meeting (the "Record Date"), may attend and participate in the Annual Meeting. To attend and participate in the Annual Meeting, you will need the 16-digit control number included on the Notice of Internet Availability of Proxy Materials, proxy card, and/or voting instruction card. The Annual Meeting webcast will begin promptly at 9:00 a.m. Eastern Time. We encourage you to access the Annual Meeting prior to the start time. Online access will begin at 8:45 a.m. Eastern Time.

The virtual Annual Meeting platform is fully supported across browsers and devices running the most updated version of applicable software and plugins. Participants should confirm that they have a strong Wi-Fi connection wherever they intend to attend and participate in the Annual Meeting. Participants should also give themselves plenty of time to log in prior to the start of the Annual Meeting.

<div align='center'>PROXY STATEMENT 2025 | Annual Meeting of Shareholders 1</div>

#### PROXY SUMMARY
Who is Eligible to Vote

You are entitled to vote if you were a shareholder as of the close of business on the Record Date. Each common share is entitled to one vote for each Director nominee and one vote for each of the other proposals to be voted on at the Annual Meeting.

• Shareholders of Record: If your shares are registered directly in your name with our transfer agent, EQ Shareowner Services, you are considered the shareholder of record with respect to those shares. As a shareholder of record, you may vote during the Annual Meeting by participating in the Annual Meeting online and following the instructions posted at www.virtualshareholdermeeting.com/AVNT2025 or you may vote by proxy.

• Beneficial Owners of Shares Held in Street Name: If your shares are held in an account at a brokerage firm, bank, or other similar organization, you are the beneficial owner of shares held in “street name,” and the organization with which you have an account is considered the shareholder of record for purposes of voting. As a beneficial owner, you have the right to instruct that organization on how to vote the shares held in your account. You are also invited to attend and participate in the Annual Meeting online at www.virtualshareholdermeeting.com/AVNT2025 .

• If you are a participant in the Avient Retirement Savings Plan