Domestic: 1-844-835-7433 International: 1-914-495-8589 Domestic: 1-855-859-2056

To participate in the audio-only portion of the call, dial 1-844-835-7433 (domestic) or 1-914-495-8589 (international) and provide conference ID number 2587092.  To access, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and provide conference ID number 2587092. Rose, Vice President, Corporate Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

Domestic: 1-844-835-7433 International: 1-914-495-8589 Domestic: 1-855-859-2056

Domestic: 1-844-835-7433 International: 1-914-495-8589 Domestic: 1-855-859-2056

Domestic: 1-844-835-7433 International: 1-914-495-8589 Domestic: 1-855-859-2056

Dial-in number: Domestic: 1-866-543-6403                          International: 1-617-213-8896 Dial-in number: Domestic: 1-888-286-8010                           International: 1-617-801-6888 DeLuca Vice President, Investor Relations PolyOne Corporation +1 440-930-1226 isaac.deluca@avient.com

Dial-in number: Domestic: 1-844-835-7433                           International: 1-914-495-8589 Dial-in number: Domestic: 1-855-859-2056                           International: 1-404-537-3406 Media Contact: Kyle Rose Vice President, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com

Corporate Media Relations North America     Kyle Rose     +1 (440) 930-3162     Kyle.Rose@avient.com Avient Investor Relations     Giuseppe (Joe) Di Salvo     +1 (440) 930-1921     Giuseppe.DiSalvo@avient.com     North America     Nicole DeChant     +1 (440) 930-1309     Nicole.DeChant@avient.com

MORADO 0270-5-1 V3 PANTONE 150-5-1 PANTONE 0330-4-1

Approved Corporate : Template/Form Document #: DOC-01879 Revision: 8 Document Owners: Brian Hoar Effective Date: May 13, 2022 Title: QF-02 Quality Standard Response Page 1 of 19 Only the electronic version of this document in ETQ is the controlled version of the document.