On August 8, 2023, ACCO Brands Corporation (the Company) announced that Boris Elisman, then Chairman and Chief Executive Officer of the Company, would resign as the Company's Chief Executive Officer effective October 1, 2023. At that time, Mr. Elisman agreed to continue as Executive Chairman of the Company's Board of Directors to ensure a smooth transition, but announced his intention not to stand for re-election to the Board at the Company?s 2024 Annual Meeting of Stockholders (2024 Annual Meeting). On February 9, 2024, Mr. Elisman notified the Board of his intention to fully retire and resign as a Director and Executive Chairman of the Board effective March 31, 2024.

Mr. Elisman?s intention to retire and resign from the Board does not reflect any dispute or disagreement with the Company. In light of Mr. Elisman's retirement, the Board, having previously determined that it is in the best interest of the Corporation and its stockholders to separate the roles of Chairman and Chief Executive Officer, and upon the recommendation of the Nominating, Governance and Sustainability Committee of the Board, has appointed Mr. E. Mark Rajkowski to serve as independent Chairman of the Board effective April 1, 2024. Mr. Thomas Kroeger, the Company's Lead Independent Director, will step down from this role effective April 1, 2024 and will continue to serve as a Director until the 2024 Annual Meeting.

Mr. Kroeger will not stand for re-election to the Board at the Annual Meeting since he has reached mandatory retirement age under the Company's Corporate Governance Principles.