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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

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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