Where Sustainability Matters: Avient to Highlight its Latest Materials, Colorants, Additives, and Services to Support a Circular Economy at Chinaplas 2023 Avient will also host two technical speeches during the show: Find more information and updates on Avient at Chinaplas 2023 here: https://mp.weixin.qq.com/s/fceFXpzPk1TCMrkPjwtxSA 

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L’ORÉAL R E D K E N S H A M P O O B O T T L E S • Ensure global color consistency across all Redken PCR packaging in order to launch in North America and Europe at the same time • Shorten time to launch by simplifying decision making process and avoiding lengthy lab trials • Ability to transition to high levels of PCR, and to facilitate transfer from one PCR to another • Solution that works with mixed grades of PCR, both rPET and polyolefins • Created a process with L’Oréal to overcome PCR coloring challenges and simplify recycled resin coloration for global consistency • Helped L’Oréal towards its objective to have 100% of packaging plastics to be either from recycled or bio-based sources • Achieved a perfect color match on the first try in 8 out of 10 cases PCR Color Prediction Service KEY REQUIREMENTS WHY AVIENT? https://www.avient.com/resource-center/services/avient-color-prediction-tool

https://www.cdp.net/en/info/terms-and-conditions/terms-of-disclosure/corporate-questionnaire 1 Contents 2 C1. Use of internal pricing of environmental externalities Environmental externality priced Select from: ☑ Yes Select all that apply ☑ Carbon [Fixed row] (5.10.1) Provide details of your organization’s internal price on carbon. Add row] (7.74.1) Provide details of your products and/or services that you classify as low-carbon products.

Webcast Details The webcast can be viewed at avient.com/investor, or by clicking here: https://edge.media-server.com/mmc/p/jwns83z8. is a premier provider of specialized polymer materials, services and solutions.

Sources: 1)    https://verpackungsgesetz-info.de/wp-content/uploads/2021/06/twopager-packaging-amendment-1.pdf 2)    https://ec.europa.eu/commission/presscorner/detail/en/IP_18_3846 3)    https://verpackungsgesetz-info.de/en/#verpackungsgesetz

Sources: 1)    https://verpackungsgesetz-info.de/wp-content/uploads/2021/06/twopager-packaging-amendment-1.pdf 2)    https://ec.europa.eu/commission/presscorner/detail/en/IP_18_3846 3)    https://verpackungsgesetz-info.de/en/#verpackungsgesetz

Sources: 1)    https://verpackungsgesetz-info.de/wp-content/uploads/2021/06/twopager-packaging-amendment-1.pdf 2)    https://ec.europa.eu/commission/presscorner/detail/en/IP_18_3846 3)    https://verpackungsgesetz-info.de/en/#verpackungsgesetz

Sources: 1)    https://verpackungsgesetz-info.de/wp-content/uploads/2021/06/twopager-packaging-amendment-1.pdf 2)    https://ec.europa.eu/commission/presscorner/detail/en/IP_18_3846 3)    https://verpackungsgesetz-info.de/en/#verpackungsgesetz

The purchase price of $1.485 billion is subject to certain customary adjustments. EST to discuss the key highlights of the expected acquisition of the Dyneema business as well as its first quarter 2022 financial results. 3 Webcast Details Avient will host a webcast on Wednesday, April 20, 2022 at 9:00 a.m. # # http://www.avient.com/investors https://edge.media-server.com/mmc/p/edkwvu9r https://edge.media-server.com/mmc/p/edkwvu9r http://www.avient.com/investors https://www.avient.com/ 4 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.