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PolyOne Corporation 2015 Investor Day | Investor Event

https://www.avient.com/investor-center/events/polyone-corporation-investor-day

PolyOne Corporation 2012 Investor Day | Investor Event

https://www.avient.com/investor-center/events/polyone-corporation-investor-day-0

PolyOne Corporation Annual Shareholder Meeting | Avient

https://www.avient.com/investor-center/events/polyone-corporation-annual-shareholder-meeting

Polyone Corporation at Longbow Research Investor Conference | Avient

https://www.avient.com/investor-center/events/polyone-corporation-longbow-research-investor-conference

PolyOne Corporation at Credit Suisse Group Conference | Avient

https://www.avient.com/investor-center/events/polyone-corporation-credit-suisse-group-conference

PolyOne Corporation Corporate Conference Call | Avient

https://www.avient.com/investor-center/events/polyone-corporation-corporate-conference-call

Q2 2019 PolyOne Corporation Earnings Conference Call

https://www.avient.com/investor-center/events/q2-2019-polyone-corporation-earnings-conference-call-0

PolyOne Corporation 2009 Investor Day | Investor Event

https://www.avient.com/investor-center/events/polyone-corporation-investor-day-1

investing-in-avient_0.pdf

https://www.avient.com/sites/default/files/2020-11/investing-in-avient_0.pdf

We are better together through: Keeping Safety First — PolyOne and Clariant Leading in Sustainability — PolyOne and Clariant are both founding members of We are Avient. 4 BETTER TOGETHER: POLYONE AND CLARIANT MASTERBATCH Key Data

ECert.QECertificate

https://www.avient.com/sites/default/files/resources/US_Norwalk_RC14001_2020Exp.pdf

PolyOne Corporation 80 North West Norwalk, OH 44857 U.S.A.