Kunkle Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting to be held on May 16, 2019: The proxy statement, proxy card and annual report to shareholders for the fiscal year ended December 31, 2018 are available at our Internet website, www.polyone.com, on the “Investor Relations” page. PROXY SUMMARY PROXY SUMMARY VOTING AND MEETING INFORMATION Who is Eligible to Vote Advance Voting Methods www.proxyvote.com OVER THE INTERNET BY TELEPHONE BY MAIL Each shareholder’s vote is important. Please submit your vote and proxy by telephone or over the Internet, or complete, sign, date and return your proxy or voting instruction form.

For more insight into processing polyketone, such as shrink rate, run temperature, and drying conditions, check out our processing guide PDF.

If you would like to learn more about how Avient chooses sustainable suppliers, check out our Supplier Code of Conduct.

Product adapted to regulatory requirements (check with your Avient representative)

44 magnum lead semi-wadcutter gas checked

Accelerate Your Speed to Market Webinar: Learn how combining design with polymers can accelerate your speed to market.

Check with Avient before using Omnicolor in any food contact applications or other regulated applications.

PRODUCT BULLETIN KEY CHARACTERISTICS • Additives to retard microbe growth in finished plastic parts, enhancing product performance • Reduces bacterial, mold and fungal growth on the surface as well as through the thickness of the plastic part • Helps reduce odor, staining, discoloration and loss of mechanical properties • Available for a variety of processes including extrusion, injection molding, blow molding, rotational molding and thermoforming MARKETS AND APPLICATIONS Suitable for a wide variety of applications, Cesa WithStand Antimicrobial Additives add value across these key markets: • Packaging* • Cosmetics • Wellness • Appliances • Electronics • Building & construction • Transportation • Wire & cable * Contact an Avient representative to check food contact compliance 1.844.4AVIENT www.avient.com Copyright © 2022, Avient Corporation.

It can also help shorten launch time for new product ranges, allowing fast and reliable checks prior to initiating sample development.

Level 3 ensures protection against a .44 magnum lead semi-wadcutter gas-checked projectile.