X0508 4 2026-02-13 1 0001412665 MidWestOne Financial Group, Inc. MOFG 0001769530 Ho-Sing-Loy Paul A 102 S CLINTON STREET P.O. BOX 1700 IOWA CITY IA 52244-1700 0 1 0 0 VP, Chief Information Officer 0 Common Stock 2026-02-13 4 F 0 1938 49.31 D 6984 D Common Stock 2026-02-13 4 D 0 6984 D 0 D Amount reported includes 2,399 from vested performance stock units since the reporting person's previous Form filing. On February 13, 2026 (the Effective Time), pursuant to the terms of the Agreement and Plan of Merger (the Merger Agreement) dated as of October 23, 2025, by and between MidWestOne Financial Group, Inc. (MOFG) and Nicolet Bankshares, Inc. (NIC), MOFG merged with and into NIC (the Merger). Defined terms not otherwise defined herein shall have the meaning set forth in the Merger Agreement. Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding share of MOFG Common Stock was canceled and converted into the right to receive 0.3175 of a share of NIC Common Stock (the Merger Consideration). Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding MOFG RSU Award was fully vested, canceled and converted into the right to receive a number of shares of NIC Common Stock equal to the product of (i) the number of shares of MOFG Common Stock subject to such MOFG RSU Award immediately prior to the Effective Time multiplied by (ii) the Exchange Ratio, less any applicable withholding taxes. Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding MOFG PSU Award was fully vested, canceled and converted into the right to receive (i) a number of shares of NIC Common Stock equal to the product of (x) the number of shares of MOFG Common Stock subject to such MOFG PSU Award immediately prior to the Effective Time based on the higher of target performance and actual performance through the Effective Time multiplied by (y) the Exchange Ratio, plus (ii) a cash payment in respect of any accrued but unpaid dividend equivalents on such MOFG PSU Award. Kenneth R. Urmie, Deputy Corporate Secretary, for Paul A. Ho-Sing-Loy under Power of Attorney dated March 2, 2025 2026-02-17