X0607 3 2026-06-01 0 0001122976 AVIENT CORP AVNT 0002132871 Di Salvo Giuseppe false AVIENT CORPORATION 33587 WALKER ROAD AVON LAKE OH 44012 1 SVP, Chief Financial Officer Common Stock 18300.401 I Supplemental Plan Restricted Stock Units Common Stock 1761 D Restricted Stock Units Common Stock 1179 D Restricted Stock Units Common Stock 2783 D Stock Appreciation Rights 31.54 2029-02-11 Common Stock 1637 D Stock Appreciation Rights 31.48 2030-02-10 Common Stock 3713 D Stock Appreciation Rights 42.27 2031-02-08 Common Stock 5470 D Stock Appreciation Rights 52.64 2032-02-14 Common Stock 4250 D Stock Appreciation Rights 42.93 2033-02-17 Common Stock 5000 D Stock Appreciation Rights 39.27 2034-02-22 Common Stock 5250 D The information in this report is based on a plan statement as of June 1, 2026. The restricted stock units vest 3 years from the date of grant on February 22, 2027. 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 19, 2027 and February 19, 2028, unless earlier vested or terminated pursuant to the terms of the grant agreement. 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. Stock appreciation rights ("SARs") become exercisable and vest only upon the achievement of both price and time requirements. To vest, each one-third of the grant must attain 10%, 15% and 20% stock appreciation, respectively (which must be maintained for a minimum of thirty consecutive trading days) from the grant date closing price of $31.54 per share and no more than one-third of the grant can vest per year during the first three years. SARs become exercisable and vest only upon the achievement of both price and time requirements. To vest, each one-third of the grant must attain 10%, 15% and 20% stock appreciation, respectively (which must be maintained for a minimum of thirty consecutive trading days) from the grant date closing price of $31.48 per share and no more than one-third of the grant can vest per year during the first three years. SARs become exercisable and vest only upon the achievement of both price and time requirements. To vest, each one-third of the grant must attain 10%, 15% and 20% stock appreciation, respectively (which must be maintained for a minimum of thirty consecutive trading days) from the grant date closing price of $42.27 per share and no more than one-third of the grant can vest per year during the first three years SARs become exercisable and vest only upon the achievement of both price and time requirements. To vest, each one-third of the grant must attain 10%, 15% and 20% stock appreciation, respectively (which must be maintained for a minimum of thirty consecutive trading days) from the grant date closing price of $52.64 per share and no more than one-third of the grant can vest per year during the first three years. SARs become exercisable and vest only upon the achievement of both price and time requirements. To vest, each one-third of the grant must attain 10%, 15% and 20% stock appreciation, respectively (which must be maintained for a minimum of twenty consecutive trading days) from the grant date closing price of $42.93 per share and no more than one-third of the grant can vest per year during the first three years. SARs become exercisable and vest only upon the achievement of both price and time requirements. To vest, each one-third of the grant must attain 10%, 15% and 20% stock appreciation, respectively (which must be maintained for a minimum of twenty consecutive trading days) from the grant date closing price of $39.27 per share and no more than one-third of the grant can vest per year during the first three years. Exhibit 24.1 - Power of Attorney /s/ Robert K. James, Power of Attorney for Giuseppe Di Salvo 2026-06-01