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AVNT-2023.09.30-News Release 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Third Quarter 2023 Results • GAAP EPS of $0.06 includes special items primarily related to environmental costs and amortization expense A recording of the webcast and the slide presentation will be available at avient.com/investors/events-presentations immediately following the conference call and will be accessible for one year. https://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.

AVNT-2021.09.30-News Release 1 NEWS RELEASE FOR IMMEDIATE RELEASE Avient Announces Record Third Quarter 2021 Results • Sales increased 32% to $1.2 billion and GAAP EPS from continuing operations increased to $0.57 from $0.02 in the prior year quarter • Adjusted EPS increased 52% to $0.70 driven by record third quarter operating income in all segments • Increased dividend 12% to $0.95, on an annualized basis, representing the eleventh consecutive annual increase • Expected to continue pursuing sustainable solutions acquisitions and resume opportunistic share repurchases with net debt to adjusted EBITDA leverage projected at 2.1x by year end CLEVELAND – October 28, 2021 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable material solutions, today reported its third quarter results for 2021. A recording of the webcast and the slide presentation will be available at avient.com/investors. # # http://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.

Unless otherwise stated, Adjusted Operating Income, Adjusted EBITDA and Adjusted EPS figures included in this presentation exclude the impact of special items as defined in our quarterly earnings releases. We are better together through: Keeping Safety First — PolyOne and Clariant are both ACC Responsible Care® companies, and nothing is more important than the health, safety and well-being of our people. We will deliver for our stakeholders through multiple value creation levers—many of which are unique to Avient: o Demand for sustainable solutions, healthcare, and composites, together with Clariant Masterbatch revenue synergies, that will drive 2021 revenue growth of 14% and long-term growth in excess of GDP o Clariant Masterbatch cost synergy capture will result in significant near-term benefit In addition, we remain committed to increasing annual dividends in line with earnings growth and opportunistically buying back shares, all while remaining modestly levered.

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I look forward to sharing more details in our third quarter earnings call and at our upcoming investor day in New York City on December 4th." 3 Sustainability Report Release The company also announced the release of its latest Sustainability Report, now available at www.avient.com/sustainability. A recording of the webcast and the slide presentation will be available at avient.com/investors/events-presentations immediately following the conference call and will be accessible for one year. For more information, visit https://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.

Beryllium copper can be used for inserts, slides or cores to increase heat transfer rates and reduce cycle times. To aid in release, the cavity or core may be coated with a release coating such as PTFE impregnated nickel after it has been given a sandblast or EDM finish. The use of mold materials with high heat transfer, such as beryllium copper, can be used to cool slides or inserts.

Colorant Chromatics™ Evoluscend™ Non-PFAS High-Temperature Mold Release Additive Non-PFAS High-Temperature Mold Release Additive Colorant Chromatics™ Evoluscend™ is a non-PFAS* high-temperature polymer mold release additive developed to boost production efficiency and product quality for manufacturers.  

Safety Data Sheets For selected products, click here, or contact your sales Technical Data Sheets For selected products, click here, or contact your sales Regulatory Requests and Certificates (FDA certificate, Absence declaration, REACH, SDS) Available upon request, please contact your sales Safety Performance Safety is Avient’s first priority. A safety management system is in place in all our locations to analyze, reduce risk, and improve safety performance. The Quality Control Record is reviewed by authorized Quality Control personnel before the batch release takes place.

Safety Data Sheets For selected products, click here, or contact your sales Technical Data Sheets For selected products, click here, or contact your sales Regulatory Requests and Certificates (FDA certificate, Absence declaration, REACH, SDS) Available upon request, please contact your sales Safety Performance Safety is Avient’s first priority. A safety management system is in place in all our locations to analyze, reduce risk, and improve safety performance. The Quality Control Record is reviewed by authorized Quality Control personnel before the batch release takes place.