M&T BANK CORP

(a) Evaluation of disclosure controls and procedures. Based upon an evaluation carried out as of the end of the period covered by this report under the supervision and with the participation of M&T's management, including its Chairman and Chief Executive Officer and its Chief Financial Officer, of the effectiveness of M&T’s disclosure controls and procedures (as defined in Exchange Act rules 13a-15(e)), René F. Jones, Chairman of the Board and Chief Executive Officer, and Daryl N. Bible, Senior Executive Vice President and Chief Financial Officer, concluded that M&T’s disclosure controls and procedures were effective as of June 30, 2025.

(b) Changes in internal control over financial reporting. M&T regularly assesses and enhances its internal control over financial reporting. The Company has begun a multi-phase implementation of new financial recordkeeping and reporting systems, including its general ledger and certain subledger platforms. In conjunction therewith the Company has and will continue to change certain processes and internal controls over financial reporting. No changes have been identified during the quarter ended June 30, 2025 that have materially affected, or are reasonably likely to materially affect, M&T’s internal control over financial reporting.

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