X0508 4 2026-02-17 0000036146 TRUSTMARK CORP TRMK 0001487219 Harvey Robert B P. O. BOX 291 JACKSON MS 39205 0 1 0 1 Executive Officer Wholly Owned Subsidiary 0 Common Stock 2026-02-17 4 A 0 6841 0 A 66584 D Common Stock 2026-02-17 4 F 0 1940 44.82 D 64644 D Reflects 165% vesting of performance-based restricted stock units granted February 15, 2023, under the Trustmark Corporation Amended and Restated Stock and Incentive Compensation Plan. The performance period for the award ended on December 31, 2025, and vesting of the award was certified by the Human Resources Committee on February 17, 2026. Shares withheld to satisfy tax withholding obligations in connection with vesting of performance-based restricted stock units granted February 15, 2023. Robert B. Harvey by Granville Tate, Jr., POA 2026-02-18