Trustmark Corporation to Announce Second Quarter Financial Results July 25 and Conduct Earnings Conference Call July 26

Trustmark Corporation (NASDAQGS:TRMK) will announce its second quarter 2023 financial results in a news release on Tuesday, July 25, 2023, after close of the market. Duane A. Dewey, President and Chief Executive Officer, will conduct a conference call with analysts on Wednesday, July 26, 2023, at 8:30 a.m. Central Time to discuss the Corporation’s financial results. Interested parties may listen to the conference call by dialing [phone] or by clicking on the link provided under the Investor Relations section of our website at www.trustmark.com. A replay of the conference call will also be available through Wednesday, August 9, 2023, in archived format at the same web address or by calling [phone], passcode 7655682.

Trustmark Corporation is a financial services company providing banking and financial solutions through offices in Alabama, Florida, Georgia, Mississippi, Tennessee and Texas. Visit trustmark.com for more information.

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Investors: Thomas C. Owens Treasurer and Principal Financial Officer 601-208-7853

F. Joseph Rein, Jr. Senior Vice President 601-208-6898

Media: Melanie A. Morgan Senior Vice President 601-208-2979