X0306 4 2023-02-14 0000036146 TRUSTMARK CORP TRMK 0001263552 DEWEY DUANE A P. O. BOX 291 JACKSON MS 39205 1 1 0 0 President & CEO Common stock 2023-02-14 4 A 0 5129 0 A 83337 D Common stock 2023-02-14 4 F 0 1603 29.53 D 83337 D Common stock 5244 I By company sponsored 401k Reflects 94.75% vesting of performance-based restricted stock award granted February 19,2020 under the Trustmark Corporation Amended and Restated Stock and Incentive Compensation Plan. The performance period for the award ended on December 31, 2022 and vesting of the award was certified by the Human Resources Committee on February 14, 2023. Shares withheld to satisfy tax withholding obligations in connection with vesting of performance-based restricted stock granted February 19, 2020. Includes 151 shares acquired through company sponsored 401(k) between January 1, 2022 and December 31, 2022. Information in this report is based on information provided by the plan administrator dated as of February 1, 2023. Duane A. Dewey by: Granville Tate, Jr., POA 2023-02-16