X0508 4 2026-02-13 0001174850 NICOLET BANKSHARES INC NIC 0001059615 CHANEY CARL J C/O NICOLET NATIONAL BANK 111 N. WASHINGTON STREET GREEN BAY WI 54301 1 0 Common Stock 2026-02-13 4 A 0 767 0 A 767 D Common Stock 2026-02-13 4 A 0 2224 0 A 2224 I by Carl J. Chaney Trust On February 13, 2026, pursuant to the terms of the Agreement and Plan of Merger (the "Merger Agreement") dated October 23, 2025, the merger by and between Nicolet Bankshares, Inc. ("NIC") and MidWestOne Financial Group, Inc. ("MOFG") was completed and MOFG merged with and into NIC. Pursuant to the terms of the Merger Agreement, each MOFG common share has the right to receive 0.3175 shares of NIC common stock. Mr. Chaney received 0.3175 shares of NIC common stock in exchange for each of his MOFG common shares held as of the effective time of the merger, February 13, 2026. /s/ H. Phillip Moore, Jr., as attorney-in-fact for Carl J. Chaney 2026-02-18