On April 14, 2023, Michael L. Marberry, the Chair of the Board of Directors of AdvanSix Inc, notified the Company of his intention to retire from the Company's Board of Directors (the “Board”), effective at the Company's Annual Meeting of Stockholders to be held on June 15, 2023 (the “Annual Meeting”). Mr. Marberry has indicated that his departure from the Board was not the result of any disagreement with management or the Board. Effective at the Annual Meeting, Mr. Todd Karran will succeed Mr. Marberry as the new Board Chair and the size of the Board will be reduced from nine to eight directors.