X0508 4 2024-08-30 0001174850 NICOLET BANKSHARES INC NIC 0001243706 DANIELS MICHAEL E C/O NICOLET NATIONAL BANK 111 NORTH WASHINGTON STREET GREEN BAY WI 54301 1 1 Chairman, President & CEO 0 Common Stock 2024-08-30 4 M 0 10316 48.85 A 82718 D Common Stock 2024-08-30 4 S 0 10316 98.9767 D 72402 D Common Stock 6252 I By 401(k) Plan Common Stock 9803 I By Spouse Stock Option (Right to Buy) 48.85 2024-08-30 4 M 0 10316 0 D 2027-05-16 Common Stock 10316 104071 D The price reported in column 4 is a weighted average price. These shares sold in multiple transactions at prices ranging from $98.85 to $99.41, inclusive. Mr. Daniels undertakes to provide to Nicolet Bankshares, Inc., any security holder of Nicolet Bankshares, Inc., or the staff of the Securities and Exchange Commission upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4. Includes a total of 913 shares owned by Mr. Daniels in the Employee Stock Purchase Plan. Mr. Daniels has not acquired additional shares under the Employee Stock Purchase Plan since Mr. Daniels last Form 4 filing dated August 29, 2024. The non-qualified stock option fully vested as of May 16, 2022, and is currently exercisable as to all remaining 104,071 shares. /s/ H. Phillip Moore, Jr., as attorney-in-fact for Michael E. Daniels 2024-09-03