TRUSTMARK CORP

Evaluation of Disclosure Controls and Procedures

As of the end of the period covered by this Annual Report on Form 10-K, an evaluation was carried out by Trustmark’s management, with the participation of its Chief Executive Officer and Treasurer and Principal Financial Officer (Principal Financial Officer), of the effectiveness of Trustmark’s disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934). Based upon that evaluation, the Chief Executive Officer and Principal Financial Officer concluded that the disclosure controls and procedures were effective as of the end of the period covered by this report. No changes were made to Trustmark’s internal control over financial reporting (as defined in Rule 13a-15(f) under the Securities Exchange Act of 1934) during the last fiscal quarter that materially affected, or are reasonably likely to materially affect, Trustmark’s internal control over financial reporting.

Management Report on Internal Control over Financial Reporting

The management of Trustmark is responsible for establishing and maintaining adequate internal control over financial reporting. Trustmark’s internal control over financial reporting was designed under the supervision of the Chief Executive Officer and Treasurer (Principal Financial Officer) to provide reasonable assurance regarding the reliability of financial reporting and the preparation of published financial statements in accordance with GAAP.

Management assessed the effectiveness of internal control over financial reporting as of December 31, 2023. In making this assessment, it used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control – Integrated Framework (2013). Based on our assessment, we believe that, as of December 31, 2023, Trustmark’s internal control over financial reporting was effective based on those criteria.

The effectiveness of Trustmark’s internal control over financial reporting as of December 31, 2023 was audited by Crowe LLP, Fort Lauderdale, Florida, (U.S. PCAOB Auditor Firm I.D.:173), an independent registered public accounting firm, as stated in their report appearing in the section captioned “Report of Independent Registered Public Accounting Firm” included in Part II. Item 8. – Financial Statements and Supplementary Data of this report.