https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf https://www.avient.com/sites/default/files/2020-10/avient-conflict-minerals-policy-10.2020.pdf • Respecter toutes les lois applicables régissant les exigences en matière de salaire et d’heures de travail, y compris la rémunération, les avantages sociaux et les heures supplémentaires.

Polym Eng Sci. 2021;1–8. wileyonlinelibrary.com/journal/pen 1 mailto:zach.zander@avient.com http://creativecommons.org/licenses/by/4.0/ http://wileyonlinelibrary.com/journal/pen http://crossmark.crossref.org/dialog/? Sci. 2021, 1. https://doi.org/10.1002/pen.25815 8 ZANDER ET AL. https://www.gupta-verlag.com/magazines/pu-magazine-international/02-2020 https://www.gupta-verlag.com/magazines/pu-magazine-international/02-2020 https://doi.org/10.1002/pen.25815 Microbial susceptibility of various polymers and evaluation of thermoplastic elastomers with antimicrobial additives 1 INTRODUCTION 2 EXPERIMENTS 3 RESULTS AND DISCUSSION 4 CONCLUSIONS Endnote REFERENCES

Avient tient tous ses managers imputables de ce comportement et de leur leadership. http://Avient.com/sustainability http://Avient.com/sustainability 25 Q : Mon superviseur m’a demandé de suivre une nouvelle procédure de mise au rebut des déchets, mais je ne suis pas certain qu’elle soit sans danger ni même légale. Francisco Nakasato, 1700 13295-000 Itupeva Sao Paulo, Brésil Téléphone : +55 11 4593 9200 Europe Siège régional Pommerloch, Luxembourg 19 Route de Bastogne Pommer- loch, Luxembourg, L-9638 Téléphone : +352 269 050 35 Télécopie : +352 269 050 45 www.avient.com http://www.avient.com

https://www.avient.com/news 4 Pro Forma for Acquisition of Avient Protective Materials business (APM) On September 1, 2022, the company acquired DSM’s Protective Materials business, the foundation of which is the renowned technology and globally admired brand of Dyneema®, the World’s Strongest Fiber™. https://www.avient.com/investors https://edge.media-server.com/mmc/p/a8tcrg4m https://www.avient.com/investors https://register.vevent.com/register/BI125445d5780d4c898d63ec3c1fa53045 https://www.avient.com/investors/events-presentations 5 About Avient Avient Corporation (NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. For more information, visit https://www.avient.com. 6 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.

https://www.avient.com/investors https://edge.media-server.com/mmc/p/fqwbh5zv https://www.avient.com/investors https://register.vevent.com/register/BI3f68f18c2b10416fa722221e3f01ea50 http://www.avient.com/investors/events-presentations 4 About Avient Avient Corporation (NYSE: AVNT) provides specialized and sustainable material solutions that transform customer challenges into opportunities, bringing new products to life for a better world. http://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. Rose Vice President, Corporate Communications Avient Corporation +1 440-930-3162 kyle.rose@avient.com http://www.avient.com/news 7 Attachment 1 Avient Corporation Summary of Condensed Consolidated Statements of Income (Unaudited) (In millions, except per share data) Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Sales $ 823.3 $ 818.0 $ 2,606.5 $ 2,508.5 Operating Income 40.6 52.8 242.9 229.6 Net (loss) income from continuing operations attributable to Avient shareholders (27.4) 33.7 99.8 143.3 Basic (loss) earnings per share from continuing operations attributable to Avient shareholders $ (0.30) $ 0.37 $ 1.09 $ 1.57 Diluted (loss) earnings per share from continuing operations attributable to Avient shareholders $ (0.30) $ 0.37 $ 1.08 $ 1.56 Senior management uses comparisons of adjusted net income attributable to Avient shareholders and diluted adjusted earnings per share (EPS) attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.

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