Beneficial Ownership Filing by Sandra Beach Lin

This filing reports on the beneficial ownership of AVIENT CORP (AVNT) by Sandra Beach Lin, a director. On June 30, 2026, Ms. Lin acquired 1049 shares of Common Stock through a dividend reinvestment feature of the Avient Corporation Deferred Compensation Plan for Non-Employee Directors, with a reported transaction price of $0.0. Following this transaction, her direct ownership is 12172.723 shares. Additionally, she holds 47388.785 shares indirectly through the same Deferred Compensation Plan. The filing is made on Form 4, and the signature date was July 2, 2026.