Effective as of January 10, 2023, Thomas King resigned as a member of the board of directors of Concord Acquisition Corp. II. Mr. King's resignation was not the result of any dispute or disagreement with the Company.

Following such resignation, Henry Helgeson, who has been serving as a member of the Board of the Company and who Board has determined qualifies as an independent director under applicable New York Stock Exchange and SEC rules, was appointed as a member of the Board's Audit Committee, Compensation Committee and Nominating and Corporate Governance Committee, to fill the vacancies on those committees created by Mr. King's resignation.