X0206 3 2025-05-01 0 0000707179 OLD NATIONAL BANCORP /IN/ ONB 0002064726 Otto Bremer Trust 30 E 7TH ST STE 2900 ST. PAUL MN 55101 1 0 1 0 Common Stock 43137330 D Shares acquired pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated as of November 25, 2024, by and among Bremer Financial Corporation ("Bremer"), Old National Bancorp (the "Issuer"), and ONB Merger Sub, Inc. ("Merger Sub"), pursuant to which Merger Sub merged with and into Bremer (the "First Step Merger"), with Bremer surviving the First Step Merger as a wholly owned subsidiary of the Issuer, and immediately following the First Step Merger, and as part of a single, integrated transaction, Bremer merged with and into the Issuer (the "Second Step Merger"), with the Issuer surviving the Second Step Merger as the surviving entity. Pursuant to the Merger Agreement, at the effective time of the First Step Merger (the "Effective Time"), each share of the common stock of Bremer converted into the right to receive (i) 4.182 shares of the common stock, no par value per share ("Common Stock"), of the Issuer and (ii) $26.22 in cash without interest. The Reporting Person has three Co-CEOs and trustees ("Trustees"). Any action by the Reporting Person with respect to the shares of Common Stock may be taken only by majority vote of the Trustees and, therefore, no Trustee individually has voting or dispositive power with respect to the shares. Solely for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, the Reporting Person may be deemed to be a director-by-deputization by virtue of the Reporting Person's contractual right to appoint a director to the board of directors of the Issuer, effective as of the Effective Time, pursuant to the Investor Agreement by and between the Trustees and the Issuer, dated November 25, 2024. /s/ Daniel C. Reardon (Co-CEO and Trustee of Otto Bremer Trust) 2025-05-07