RECORD DATE The Board set March 14, 2023 as the record date for the Annual Meeting and owners of record of common shares of Avient as of the close of business on that date are eligible to: • Receive this notice of the Annual Meeting; and • Vote at the Annual Meeting and any adjournments or postponements of the Annual Meeting. Shareholders as of the close of business on March 14, 2023, the record date for the Annual Meeting (the "Record Date"), may attend and participate in the Annual Meeting. A performance share is a bookkeeping entry that records the equivalent of one Common Share, and a performance unit is a bookkeeping entry that records a unit equivalent to $1.00 or such other value as determined by the Committee.

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Avient Announces Record Fourth Quarter and Full Year 2021 Results

Revenue expanded 7% to $814 million, driven by recent commercial investments and record performances in Distribution and Performance Products and S