X0306 4 2022-07-22 0001174850 NICOLET BANKSHARES INC NIC 0001664500 Dykema John Nicholas C/O NICOLET NATIONAL BANK 111 NORTH WASHINGTON STREET GREEN BAY WI 54301 1 Common Stock 2022-07-22 4 P 0 4793 78.95 A 40097 I By the John & Lisa Dykema 2012 Trust Common Stock 2022-07-22 4 P 0 4793 79.03 A 9793 I By the John Dykema 2020 Trust The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $78.11 to $79.07, inclusive. Mr. Dykema 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 purchased at each separate price within the range set forth in footnote (1) to this Form 4. The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $78.61 to $79.07, inclusive. Mr. Dykema 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 purchased at each separate price within the range set forth in footnote (2) to this Form 4. /s/ H. Phillip Moore, Jr., as attorney-in-fact for John N. Dykema 2022-07-25