On October 24, 2022, Fred R. Donner, a member of the Board of Directors of Argo Group International Holdings, Ltd., notified the Company that he does not intend to stand for re-election to the Board at the completion of his term ending at the 2022 Annual General Meeting of Shareholders (the “Annual General Meeting”) in light of his other professional and personal commitments. Mr. Donner's decision is not due to any disagreement with the Company or the Board on any matter relating to the Company's operations, policies or practices. In light of Mr. Donner's notification to the Company, the Board has reduced the size of the Board to seven directors, effective immediately upon the commencement of the Annual General Meeting.