Q1 Avient Corporation Earnings Conference Call More Q4 Avient Corporation Earnings Conference Call More Q3 Avient Corporation Earnings Conference Call More

Q1 Avient Corporation Earnings Conference Call More Q4 Avient Corporation Earnings Conference Call More Q3 Avient Corporation Earnings Conference Call More

Q1 Avient Corporation Earnings Conference Call More Q4 Avient Corporation Earnings Conference Call More Q3 Avient Corporation Earnings Conference Call More

Q1 Avient Corporation Earnings Conference Call More Q4 Avient Corporation Earnings Conference Call More Q3 Avient Corporation Earnings Conference Call More

PolyOne Corporation executive vice president and Chief Financial Officer. His most recent position was vice president, Internal Audit, and corporate ethics officer.

FMC Corporation The Valspar Corporation Avery Dennison Corporation H.B. Axiall Corporation* Hexcel Corporation Cabot Corporation International Flavors & Fragrances Inc Management Continuity Agreements We have entered into Continuity Agreements with all of our elected corporate officers, including each of the Named Executive Officers.

Patterson President and Chief Executive Officer PolyOne Corporation Please refer to the accompanying materials for voting instructions. Sigma-Aldrich Corporation* Axiall Corporation Ferro Corporation The Scotts Miracle-Gro Company Cabot Corporation FMC Corporation The Valspar Corporation Celanese Corporation H.B. Management Continuity Agreements We have entered into Continuity Agreements with all of our elected corporate officers, including each of the Named Executive Officers.

PolyOne Corporation chairman, president and chief executive officer.  chairman, president and chief executive officer;

RTF Template Place and date: For the issuing office: Shanghai, 19 March, 2021 DNV GL - Business Assurance Suite A, Building 9, No.1591 Hongqiao Road, Changning District, Shanghai 200336, P.R. TEL:+31(0)102922689. www.dnvgl.com/assurance Page 2 of 2 Appendix to Certificate PolyOne-Shanghai, China Locations included in the certification are as follows: Site Name Site Address Site Scope PolyOne Polymer (Tianjin) Company Limited No.28#C, Jin Bin Hi-Tech Industrial Park, 156 Nan Hai Road, Tianjin Economic-Technological, Tianjin, China, 300457 Manufacture of Masterbatch PolyOne-Shanghai, China No. 88, Guo Shou Jing Road, Z.

MSC Certificate Place and date: For the issuing office: Shanghai, 27 April, 2022 DNV - Business Assurance Suite A, Building 9, No.1591 Hongqiao Road, Changning District, Shanghai 200336, P.R. ACCREDITED UNIT: DNV Business Assurance B.V., Zwolseweg 1, 2994 LB, Barendrecht, Netherlands - TEL: +31(0)102922689. www.dnv.com/assurance Page 2 of 2 Appendix to Certificate Polyone - Suzhou, China Locations included in the certification are as follows: Site Name Site Address Site Scope PolyOne Management (Shanghai) Co., Ltd.