On February 28, 2024, Jay D. Burchfield (age 77), a member of the board of directors (?Board?) of Simmons First National Corporation (?Company?), notified the Company that he has decided not to stand for re-election at the Company?s 2024 annual meeting of shareholders. Mr. Burchfield has been a director of the Company since 2015 and has served (among other roles) as chairman of the Board?s compensation committee and as a member of the Board?s audit committee.