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. Swanson , Director, Investor Relations, PolyOne Corporation, +1 440-930-1018, eric.swanson@avient.com; Media Contact: Kyle G. Rose, Vice President, Corporate Communications, PolyOne 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 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, 2 and 4 Figure 8 shows different runner cross-sections and their associated efficiency. Figures 8 and 9 show typical locations for runner keepers and sucker pins.

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