For more information, visit https://www.avient.com.   To access Avient’s news library online, please visit www.avient.com/news.  

NOTE TO EDITORS: Based on a multi-state HAI prevalence survey, the Centers for Disease Control and Prevention (CDC) reports that an estimated 722,000 HAIs per year occur in U.S acute care hospitals (source: http://www.cdc.gov/HAI/surveillance/). To access PolyOne’s news library online, please go to www.polyone.com/news

For more information, visit https://www.avient.com.       To access Avient’s news library online, please visit www.avient.com/news.    

For more information, visit https://www.avient.com.   To access Avient's news library online, please visit www.avient.com/news.    

To access Avient’s news library online, please visit https://www.avient.com/news-events. 

Our filings are available to the public at the SEC’s website at http://www.sec.gov. Level 1 assets are valued based on quoted market prices. Compensation expense is measured on the grant date using the quoted market price of our common shares and is recognized on a straight-line basis over the requisite service period.

Our filings are available to the public at the SEC’s website at http://www.sec.gov. Level 1 assets are valued based on quoted market prices. Compensation expense is measured on the grant date using the quoted market price of our common shares and is recognized on a straight-line basis over the requisite service period.

A recording of the webcast and the slide presentation will be available at avient.com/investors/events-presentations immediately following the conference call and will be accessible for one year. https://www.avient.com/investors https://edge.media-server.com/mmc/p/pyh3w2ip/ https://www.avient.com/investors https://register.vevent.com/register/BId7a8a09515a442e9b13c4d5558d927fe https://www.avient.com/investors/events-presentations 4 Non-GAAP Financial Measures The Company uses both GAAP (generally accepted accounting principles) and non-GAAP financial measures. To access Avient’s news library online, please visit www.avient.com/news-events. For more information, visit https://www.avient.com/. 5 Forward-looking Statements In this press release, statements that are not reported financial results or other historical information are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995.

Delaware The First State Page 1 5799827 8100 Authentication: 202256240 SR# 20210072080 Date: 01-11-21 You may verify this certificate online at corp.delaware.gov/authver.shtml I, JEFFREY W.