X0306 4 2021-11-12 0001174850 NICOLET BANKSHARES INC NCBS 0001667436 Witczak Eric James C/O NICOLET NATIONAL BANK 111 NORTH WASHINGTON STREET GREEN BAY WI 54301 1 Secretary Common Stock 2021-11-12 4 F 0 103 74.88 D 22152 D Shares withheld to satisfy tax obligation of vested restricted stock. Includes 80 additional shares acquired under the Employee Stock Purchase Plan since the reporting person's last Form 4 filing on June 10, 2021. The reporting person owns a total of 517 shares in the Employee Stock Purchase Plan as of the date of this report. /s/ H. Phillip Moore, Jr., as attorney-in-fact for Eric J. Witczak 2021-11-15