X0508 4 2026-02-13 0001174850 NICOLET BANKSHARES INC NIC 0001866582 MOORE HUBERT PHILLIP JR C/O NICOLET NATIONAL BANK 111 NORTH WASHINGTON STREET GREEN BAY WI 54301 1 CFO 0 Common Stock 2026-02-13 4 A 0 3333 155.19 A 40137 D Common Stock 2026-02-13 4 F 0 1122 155.19 D 39015 D Common Stock 400 I By Spouse's IRA Restricted stock unit ("RSU") vesting. Per the terms of the RSU, the performance-based metric of successfully closing the merger between Nicolet Bankshares, Inc., and MidWestOne Financial Group was completed on February 13, 2026. Shares withheld to cover the tax liability of the RSU performance vesting on February 13, 2026. Includes shares acquired under the Employee Stock Purchase Plan. I have not acquired additional shares under the Employee Stock Purchase Plan since my last filing on January 21, 2026. I own a total of 462 shares in the Employee Stock Purchase Plan as of the date of this report. /s/ H. Phillip Moore, Jr. 2026-02-17