You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Investor Relations Contact: Giuseppe (Joe) Di Salvo, Vice President, Treasurer and Investor Relations, Avient Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com; Media Contact: Kyle G. Rose, Vice President, Corporate Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission. +1 440-930-1018 +1 440-930-3162

You are advised to consult any further disclosures we make on related subjects in our reports on Form 10-Q, 8-K and 10-K that we provide to the Securities and Exchange Commission. +1 440-930-1018 +1 440-930-3162

GRNPWDMB (1% Chromium Oxide Green G- 6099) Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1) PP FR 8-6 LMS-1000

BLANCO 1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1) PP FR 8-6 LMS-1000

X NM 252825#SR-23799-1-5 Grey Conc 3% Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1) PP FR 8-6 LMS-1000

1. 1. 1.

Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1) PP FR 8-6 LMS-1000

Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1) PP FR 8-6 LMS-1000

Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1) PP FR 8-6 LMS-1000