X0508 4 2026-02-20 0001122976 AVIENT CORP AVNT 0002040362 Irwin Michael Joseph AVIENT CORPORATION 33587 WALKER ROAD AVON LAKE OH 44012 1 SVP, New Bus Dev & Mktg Exc 0 Restricted Stock Units 2026-02-20 4 A 0 3210 0 A Common Stock 3210 3210 D Each restricted stock unit represents a contingent right to receive one share of Avient common stock. The restricted stock units vest in substantially equal installments on each of February 20, 2027, February 20, 2028 and February 20, 2029, unless earlier vested or terminated pursuant to the terms of the grant agreement. /s/ Robert K. James, Power of Attorney for Michael Irwin 2026-02-24