Antitrust Laws 2 Antitrust Law Violations 3 Antitrust Potential Areas of Concern 3 Conclusion 5 Reporting Possible Violations 6 Avient Ethics Hotline 6 Protection from Retaliation 6 Antitrust Checklist 7 Quick Reference: Antitrust DO’s and DON’Ts 9 Guide For Compliance Avient is committed to promoting fair competition and free enterprise in the marketplace. Contact the Avient Legal Department if you have any questions about the propriety of any action you are contemplating. 8 HOME | TOC Updated: February 2021 Quick Reference: Antitrust DO’s and DON’Ts DO ✓ Immediately report to the Avient Legal Department, in writing, contacts by competitors requesting or communicating pricing or other competitively sensitive information Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brazil Telephone: +55 11 4593 9200 Europe Regional Headquarters Pommerloch, Luxembourg 19 Route de Bastogne Pommerloch, Luxembourg, L-9638 Telephone: +352 269 050 35 Fax: +352 269 050 45 www.avient.com http://www.avient.com Quick Reference: Antitrust DO’s and DON’Ts Antitrust Checklist Protection from Retaliation Avient Ethics Hotline Conclusion Antitrust Potential Areas of Concern Antitrust Law Violations An Overview of U.S.

This news release does not constitute an offer to sell or the solicitation of an offer to buy 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. View original content:http://www.prnewswire.com/news-releases/polyone-announces-public-offering-of-common-shares-300994862.html

This news release does not constitute an offer to sell or the solicitation of an offer to buy 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. View original content:http://www.prnewswire.com/news-releases/polyone-announces-pricing-of-public-offering-of-common-shares-300996632.html

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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. View original content to download multimedia:https://www.prnewswire.com/news-releases/avient-completes-sale-of-distribution-business-to-hig-capital-301664752.html

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. View original content to download multimedia:http://www.prnewswire.com/news-releases/polyone-announces-seventh-consecutive-annual-increase-in-quarterly-dividend-300729890.html

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. View original content to download multimedia:https://www.prnewswire.com/news-releases/avient-announces-thirteenth-consecutive-annual-dividend-increase-301955491.html

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. View original content to download multimedia:https://www.prnewswire.com/news-releases/avient-announces-twelfth-consecutive-annual-increase-in-quarterly-dividend-301649054.html

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. View original content to download multimedia:https://www.prnewswire.com/news-releases/avient-announces-debt-paydown-and-term-loan-refinancing-301903548.html

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. View original content to download multimedia:https://www.prnewswire.com/news-releases/avient-announces-debt-financing-to-fund-acquisition-of-dsm-protective-materials-301595183.html