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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. See Attachment 3 for a definition and summary of special items. See Attachment 3 for a definition and summary of special items.

X04000340302 SCREENTIGHT SAMPLE X0400333501 TACO MAETAL SAMPLE Sales Order Confirmation - under "Material Header"

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. • Adjusted EPS of $0.57 exceeds guidance of $0.56 as a result of favorable margins and reduced interest expense offsetting lower than projected sales. • Fourth quarter and full year adjusted EPS guidance updated to $0.47 and $2.30, respectively; full year free cash flow expectation maintained at $180 million. • Destocking appears to be nearing an end in many end markets; fourth quarter adjusted EPS projected to be 12% higher than prior year. See Attachment 3 for a definition and summary of special items. See Attachment 3 for a definition and summary of special items.