X0508 4 2026-01-20 0001174850 NICOLET BANKSHARES INC NIC 0001667436 Witczak Eric James C/O NICOLET NATIONAL BANK 111 NORTH WASHINGTON STREET GREEN BAY WI 54301 1 EVP & Secretary 0 Common Stock 2026-01-20 4 A 0 4065 131.43 A 32561 D Common Stock 6783 I By 401(k) Plan Restricted shares awarded January 20, 2026. Awarded shares will vest annually on January 20th of each year, in five equal installments beginning January 20, 2027, and will fully vest on January 20, 2031. Includes 22 additional shares acquired under the Employee Stock Purchase Plan since Mr. Witczak's last Form 4 filing on November 24, 2025. Mr. Witczak owns a total of 1,087 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 2026-01-21