Company: AVNT
Filing Date: 2025-03-27
Form Type: DEFA14A
Source: 0001122976-25-000021
Chunk: 0

Company: AVIENT CORP
Filing Date: 2025-03-27
Form: DEFA14A
Chunk 0
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<div align='center'>UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549</div>

#### SCHEDULE 14A
(Rule 14a-101)

<div align='center'>INFORMATION REQUIRED IN PROXY STATEMENT
SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the
Securities Exchange Act of 1934 (Amendment No._____)</div>

Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

☐ Definitive Proxy Statement

☑ Definitive Additional Materials

☐ Soliciting Material Under §240.14a-12

| AVIENT CORPORATION |

<div align='center'>(Name of Registrant as Specified in its Charter)</div>

| (Name of Person(s) Filing Proxy Statement, if Other Than the Registrant) |

Payment of Filing Fee (Check all boxes that apply):

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☐ Fee paid previously with preliminary materials.

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.