X0508 4 2025-12-01 0001122976 AVIENT CORP AVNT 0001614139 Ashish Khandpur K AVIENT CORPORATION 33587 WALKER ROAD AVON LAKE OH 44012 1 1 Chairman, President & CEO 0 Common Stock 2025-12-01 4 M 0 35250 A 60158 D Common Stock 2025-12-02 4 F 0 16475 30.61 D 43683 D Restricted Stock Units 2025-12-01 4 M 0 35250 0 D Common Stock 35250 70500 D Each restricted stock unit represents a contingent right to receive one share of Avient common stock. Includes dividend equivalents earned with respect to the vested restricted stock units. Represents shares of Avient common stock that were withheld solely to satisfy the tax withholding obligation applicable to the vesting of restricted stock units. The restricted stock units vest ratably on each of the first four anniversaries of the December 1, 2023 date of grant, unless earlier vested or terminated pursuant to the terms of the grant agreement. /s/ Robert K. James, Power of Attorney for Ashish K. Khandpur 2025-12-03