NIC

SEC source: 0001174850-26-000079 · form4.xml · nonDerivative · entry 1

ATWELL ROBERT BRUCE · CIK 0001253903 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,054

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001174850-26-000074 · form4.xml · derivative · entry 5

ATWELL ROBERT BRUCE · CIK 0001253903 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 15,000 shares

Expires 2027-05-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: The nonqualified options fully vested as of May 16, 2022, and have been fully exercised as of the date of this report.

SEC source: 0001174850-26-000074 · form4.xml · nonDerivative · entry 3

ATWELL ROBERT BRUCE · CIK 0001253903 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,054

F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $154.898 to $155.824, inclusive. Mr. Atwell 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.

SEC source: 0001174850-26-000074 · form4.xml · nonDerivative · entry 2

ATWELL ROBERT BRUCE · CIK 0001253903 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,450

SEC source: 0001174850-26-000074 · form4.xml · nonDerivative · entry 1

ATWELL ROBERT BRUCE · CIK 0001253903 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,054

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001174850-26-000051 · form4.xml · nonDerivative · entry 2

Witczak Eric James · CIK 0001667436 · EVP & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,776

F2 · shares: Shares withheld to cover the tax liability of the RSU performance vesting on February 13, 2026.

F3 · balance_after: Includes shares acquired under the Employee Stock Purchase Plan. Mr. Witczak has not acquired additional shares under the Employee Stock Purchase Plan since his last Form 4 filing on January 21, 2026. Mr. Witczak owns a total of 1,087 shares in the Employee Stock Purchase Plan as of the date of this report.

SEC source: 0001174850-26-000051 · form4.xml · nonDerivative · entry 1

Witczak Eric James · CIK 0001667436 · EVP & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,894

F1 · shares: 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.

SEC source: 0001174850-26-000049 · form4.xml · nonDerivative · entry 2

MOORE HUBERT PHILLIP JR · CIK 0001866582 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,015

F2 · shares: Shares withheld to cover the tax liability of the RSU performance vesting on February 13, 2026.

F3 · balance_after: 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.

SEC source: 0001174850-26-000049 · form4.xml · nonDerivative · entry 1

MOORE HUBERT PHILLIP JR · CIK 0001866582 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,137

F1 · shares: 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.

SEC source: 0001174850-26-000047 · form4.xml · nonDerivative · entry 2

Hutjens Brad Vincent · CIK 0001664629 · EVP - CCO - Nicolet Natl Bank

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,530

F2 · shares: Shares withheld to cover the tax liability of the RSU performance vesting on February 13, 2026.

F3 · balance_after: Includes shares acquired under the Employee Stock Purchase Plan. Mr. Hutjens has not acquired additional shares under the Employee Stock Purchase Plan since his last Form 4 filing on January 21, 2026. Mr. Hutjens owns a total of 848 shares in the Employee Stock Purchase Plan as of the date of this report.

SEC source: 0001174850-26-000047 · form4.xml · nonDerivative · entry 1

Hutjens Brad Vincent · CIK 0001664629 · EVP - CCO - Nicolet Natl Bank

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,620

F1 · shares: 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.

SEC source: 0001174850-26-000045 · form4.xml · nonDerivative · entry 2

BOHN WILLIAM M · CIK 0001192634 · EVP Wealth Mgmt - Nicolet Bank

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,483

F2 · shares: Shares withheld to cover the tax liability of the RSU performance vesting on February 13, 2026.

F3 · balance_after: Includes a total of 116 shares owned by Mr. Bohn in the Employee Stock Purchase Plan. Mr. Bohn has not acquired additional shares under the Employee Stock Purchase Plan since Mr. Bohn's last Form 4 filing dated January 21, 2026.

SEC source: 0001174850-26-000045 · form4.xml · nonDerivative · entry 1

BOHN WILLIAM M · CIK 0001192634 · EVP Wealth Mgmt - Nicolet Bank

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,563

F1 · shares: 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.

SEC source: 0001174850-26-000043 · form4.xml · nonDerivative · entry 2

DANIELS MICHAEL E · CIK 0001243706 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 126,799

F2 · shares: Shares withheld to cover the tax liability of the RSU performance vesting on February 13, 2026.

F3 · balance_after: Includes a total of 1,061 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 January 21, 2026.

SEC source: 0001174850-26-000043 · form4.xml · nonDerivative · entry 1

DANIELS MICHAEL E · CIK 0001243706 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 129,423

F1 · shares: 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.

SEC source: 0001174850-26-000063 · form4.xml · nonDerivative · entry 2

CHANEY CARL J · CIK 0001059615 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Carl J. Chaney Trust

Disclosed balance after: 2,224

F1 · kind: On February 13, 2026, pursuant to the terms of the Agreement and Plan of Merger (the "Merger Agreement") dated October 23, 2025, the merger by and between Nicolet Bankshares, Inc. ("NIC") and MidWestOne Financial Group, Inc. ("MOFG") was completed and MOFG merged with and into NIC.

F2 · price: Pursuant to the terms of the Merger Agreement, each MOFG common share has the right to receive 0.3175 shares of NIC common stock.

F3 · balance_after: Mr. Chaney received 0.3175 shares of NIC common stock in exchange for each of his MOFG common shares held as of the effective time of the merger, February 13, 2026.

SEC source: 0001174850-26-000063 · form4.xml · nonDerivative · entry 1

CHANEY CARL J · CIK 0001059615 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 767

F1 · kind: On February 13, 2026, pursuant to the terms of the Agreement and Plan of Merger (the "Merger Agreement") dated October 23, 2025, the merger by and between Nicolet Bankshares, Inc. ("NIC") and MidWestOne Financial Group, Inc. ("MOFG") was completed and MOFG merged with and into NIC.

F2 · price: Pursuant to the terms of the Merger Agreement, each MOFG common share has the right to receive 0.3175 shares of NIC common stock.

F3 · balance_after: Mr. Chaney received 0.3175 shares of NIC common stock in exchange for each of his MOFG common shares held as of the effective time of the merger, February 13, 2026.

SEC source: 0001174850-26-000069 · form4.xml · nonDerivative · entry 1

Hayek Matthew J · CIK 0001774005 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,063

F1 · kind: On February 13, 2026, pursuant to the terms of the Agreement and Plan of Merger (the "Merger Agreement") dated October 23, 2025, the merger by and between Nicolet Bankshares, Inc. ("NIC") and MidWestOne Financial Group, Inc. ("MOFG") was completed and MOFG merged with and into NIC.

F2 · price: Pursuant to the terms of the Merger Agreement, each MOFG common share has the right to receive 0.3175 shares of NIC common stock.

F3 · balance_after: Mr. Hayek received 0.3175 shares of NIC common stock in exchange for each of his MOFG common shares held as of the effective time of the merger, February 13, 2026.

SEC source: 0001174850-26-000067 · form4.xml · nonDerivative · entry 1

McCormick Tracy S · CIK 0001518062 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,797

F1 · kind: On February 13, 2026, pursuant to the terms of the Agreement and Plan of Merger (the "Merger Agreement") dated October 23, 2025, the merger by and between Nicolet Bankshares, Inc. ("NIC") and MidWestOne Financial Group, Inc. ("MOFG") was completed and MOFG merged with and into NIC.

F2 · price: Pursuant to the terms of the Merger Agreement, each MOFG common share has the right to receive 0.3175 shares of NIC common stock.

F3 · balance_after: Ms. McCormick received 0.3175 shares of NIC common stock in exchange for each of her MOFG common shares held as of the effective time of the merger, February 13, 2026.

SEC source: 0001174850-26-000065 · form4.xml · nonDerivative · entry 1

Godwin Janet E · CIK 0001774505 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,364

F1 · kind: On February 13, 2026, pursuant to the terms of the Agreement and Plan of Merger (the "Merger Agreement") dated October 23, 2025, the merger by and between Nicolet Bankshares, Inc. ("NIC") and MidWestOne Financial Group, Inc. ("MOFG") was completed and MOFG merged with and into NIC.

F2 · price: Pursuant to the terms of the Merger Agreement, each MOFG common share has the right to receive 0.3175 shares of NIC common stock.

F3 · balance_after: Ms. Godwin received 0.3175 shares of NIC common stock in exchange for each of her MOFG common shares held as of the effective time of the merger, February 13, 2026.

SEC source: 0001174850-26-000035 · form4.xml · nonDerivative · entry 1

COLON HECTOR · CIK 0001873825 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Nicolet National Bank Deferred Compensation Plan for Non-employee Directors

Disclosed balance after: 1,059.617

F1 · shares: Mr. Colon acquired 15.367 shares in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors by deferring his fourth quarter 2025 earned board fees.

F2 · balance_after: Includes 2.537 shares received as dividend reinvestment in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors from Nicolet Bankshares, Inc. paid cash dividend on December 15, 2025.

SEC source: 0001174850-26-000033 · form4.xml · nonDerivative · entry 1

Ghidorzi Christopher J. · CIK 0001487072 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Nicolet National Bank Deferred Compensation Plan For Non-employee Directors

Disclosed balance after: 3,376.295

F1 · shares: Mr. Ghidorzi acquired 7.684 shares in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors by deferring a portion of his fourth quarter 2025 earned board fees.

F2 · balance_after: Includes 8.184 shares received as dividend reinvestment in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors from Nicolet Bankshares, Inc. paid cash dividend on December 15, 2025.

SEC source: 0001174850-26-000031 · form4.xml · nonDerivative · entry 1

McClone Dustin James · CIK 0001702968 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Nicolet National Bank Deferred Compensation Plan for Non-employee Directors

Disclosed balance after: 1,862.299

F1 · shares: Mr. McClone acquired 15.367 shares in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors by deferring his fourth quarter 2025 earned board fees.

F2 · balance_after: Includes 4.487 shares received as dividend reinvestment in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors from Nicolet Bankshares, Inc. paid cash dividend on December 15, 2025.

SEC source: 0001174850-26-000028 · form4.xml · nonDerivative · entry 1

WEYERS ROBERT J · CIK 0001243734 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Nicolet National Bank Deferred Compensation Plan For Non-employee Directors

Disclosed balance after: 9,774.415

F1 · shares: Mr. Weyers acquired 23.051 shares in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors by deferring his fourth quarter 2025 earned board fees.

F2 · balance_after: Includes 23.691 shares received as dividend reinvestment in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors from Nicolet Bankshares, Inc. paid cash dividend on December 15, 2025.

SEC source: 0001174850-26-000025 · form4.xml · nonDerivative · entry 1

LONG DONALD J JR · CIK 0001243725 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Nicolet National Bank Deferred Compensation Plan For Non-employee Directors

Disclosed balance after: 5,598.625

F1 · shares: Mr. Long acquired 15.367 shares in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors by deferring his fourth quarter 2025 earned board fees.

F2 · balance_after: Includes 13.565 shares received as dividend reinvestment in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors from Nicolet Bankshares, Inc. paid cash dividend on December 15, 2025.

SEC source: 0001174850-26-000023 · form4.xml · nonDerivative · entry 1

JOHNSON BRENDA L · CIK 0001942061 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Nicolet National Bank Deferred Compensation Plan for Non-employee Directors

Disclosed balance after: 897.386

F1 · shares: Ms. Johnson acquired 7.684 shares in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors by deferring her fourth quarter 2025 earned board fees.

F2 · balance_after: Includes 2.162 shares received as dividend reinvestment in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors from Nicolet Bankshares, Inc. paid cash dividend on December 15, 2025.

SEC source: 0001174850-26-000021 · form4.xml · nonDerivative · entry 1

ATWELL ROBERT BRUCE · CIK 0001253903 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Nicolet National Bank Deferred Compensation Plan For Non-employee Directors

Disclosed balance after: 554.562

F1 · shares: Mr. Atwell acquired 15.367 shares in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors by deferring his fourth quarter 2025 earned board fees.

F2 · balance_after: Includes 1.309 shares received as dividend reinvestment in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors from Nicolet Bankshares, Inc. paid cash dividend on December 15, 2025.

SEC source: 0001174850-26-000019 · form4.xml · nonDerivative · entry 1

Dykema John Nicholas · CIK 0001664500 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Nicolet National Bank Deferred Compensation Plan For Non-employee Directors

Disclosed balance after: 9,644.497

F1 · shares: Mr. Dykema acquired 15.367 shares in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors by deferring his fourth quarter 2025 earned board fees.

F2 · balance_after: Includes 23.395 shares received as dividend reinvestment in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors from Nicolet Bankshares, Inc. paid cash dividend on December 15, 2025.

SEC source: 0001174850-26-000017 · form4.xml · nonDerivative · entry 1

Anderson Marcia M · CIK 0001731849 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Nicolet National Bank Deferred Compensation Plan For Non-employee Directors

Disclosed balance after: 412.488

F1 · shares: Ms. Anderson acquired 7.684 shares in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors by deferring a portion of her fourth quarter 2025 earned board fees.

F2 · balance_after: Includes 0.983 fractional share received as dividend reinvestment in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors from Nicolet Bankshares, Inc. paid cash dividend on December 15, 2025.

SEC source: 0001174850-26-000015 · form4.xml · nonDerivative · entry 1

Witczak Eric James · CIK 0001667436 · EVP & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,561

F1 · shares: 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.

F2 · balance_after: 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.

SEC source: 0001174850-26-000011 · form4.xml · nonDerivative · entry 1

Hutjens Brad Vincent · CIK 0001664629 · EVP - CCO - Nicolet Natl Bank

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,287

F1 · shares: 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.

F2 · balance_after: Includes 22 additional shares acquired under the Employee Stock Purchase Plan since Mr. Hutjens last Form 4 filing on November 24, 2025. Mr. Hutjens owns a total of 848 shares in the Employee Stock Purchase Plan as of the date of this report.

SEC source: 0001174850-26-000013 · form4.xml · nonDerivative · entry 1

MOORE HUBERT PHILLIP JR · CIK 0001866582 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,804

F1 · shares: 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.

F2 · balance_after: Includes 23 shares acquired under the Employee Stock Purchase Plan, since my previous Form 4 filing dated November 20, 2025. I own a total of 462 shares in the Employee Stock Purchase Plan as of the date of this report.

SEC source: 0001174850-26-000009 · form4.xml · nonDerivative · entry 1

DANIELS MICHAEL E · CIK 0001243706 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 122,757

F1 · shares: 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.

F2 · balance_after: Includes an additional 22 shares acquired under the Employee Stock Purchase Plan since Mr. Daniels last Form 4 filing dated November 24, 2025. Mr. Daniels owns a total of 1,061 shares in the Employee Stock Purchase Plan as of the date of this report.

SEC source: 0001174850-26-000007 · form4.xml · nonDerivative · entry 1

BOHN WILLIAM M · CIK 0001192634 · EVP Wealth Mgmt - Nicolet Bank

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,230

F1 · shares: 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.

F2 · balance_after: Includes 22 shares acquired under the Employee Stock Purchase Plan since Mr. Bohn's last Form 4 filing dated November 20, 2025. Mr. Bohn owns a total of 116 shares in the Employee Stock Purchase Plan as of the date of this report.

SEC source: 0001174850-26-000037 · form4.xml · nonDerivative · entry 2

HETZEL ANDREW F JR · CIK 0001243718 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Nicolet National Bank Deferred Compensation Plan For Non-employee Directors

Disclosed balance after: 1,970.549

F3 · shares: Mr. Hetzel acquired 7.684 shares in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors by deferring his fourth quarter 2025 earned board fees.

F4 · balance_after: Includes 4.769 shares received as dividend reinvestment in the Nicolet National Bank Deferred Compensation Plan for Non-employee Directors from Nicolet Bankshares, Inc. paid cash dividend on December 15, 2025.

SEC source: 0001174850-25-000105 · form4.xml · nonDerivative · entry 1

Witczak Eric James · CIK 0001667436 · EVP & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,474

F1 · shares: Shares withheld to satisfy tax obligation of vested restricted stock.

F2 · balance_after: Includes shares acquired under the Employee Stock Purchase Plan. Mr. Witczak has not acquired additional shares under the Employee Stock Purchase Plan since his last Form 4 filing on November 20, 2025. Mr. Witczak owns a total of 1,065 shares in the Employee Stock Purchase Plan as of the date of this report.

SEC source: 0001174850-25-000103 · form4.xml · nonDerivative · entry 1

Hutjens Brad Vincent · CIK 0001664629 · EVP - CCO - Nicolet Natl Bank

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,415

F1 · shares: Shares withheld to satisfy tax obligation of vested restricted stock.

F2 · balance_after: Includes shares acquired under the Employee Stock Purchase Plan. Mr. Hutjens has not acquired additional shares under the Employee Stock Purchase Plan since his last Form 4 filing on November 20, 2025. Mr. Hutjens owns a total of 826 shares in the Employee Stock Purchase Plan as of the date of this report.

SEC source: 0001174850-25-000101 · form4.xml · nonDerivative · entry 1

DANIELS MICHAEL E · CIK 0001243706 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 110,610

F1 · shares: Shares withheld to satisfy tax obligation of vested restricted stock.

F2 · balance_after: Includes shares acquired under the Employee Stock Purchase Plan. Mr. Daniels has not acquired additional shares under the Employee Stock Purchase Plan since his last Form 4 filing on November 20, 2025. Mr. Daniels owns a total of 1,039 shares in the Employee Stock Purchase Plan as of the date of this report.

SEC source: 0001174850-25-000099 · form4.xml · nonDerivative · entry 1

ATWELL ROBERT BRUCE · CIK 0001253903 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,054

F1 · shares: Shares withheld to satisfy tax obligation of vested restricted stock.

SEC source: 0001174850-25-000097 · form4.xml · nonDerivative · entry 1

Witczak Eric James · CIK 0001667436 · EVP & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,585

F1 · shares: Shares withheld to satisfy tax obligation of vested restricted stock.

F2 · balance_after: Includes 23 additional shares acquired under the Employee Stock Purchase Plan since Mr. Witczak's last Form 4 filing on August 28, 2025. Mr. Witczak owns a total of 1,065 shares in the Employee Stock Purchase Plan as of the date of this report.

SEC source: 0001174850-25-000093 · form4.xml · nonDerivative · entry 1

DANIELS MICHAEL E · CIK 0001243706 · Director · Chairman, President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 110,795

F1 · shares: Shares withheld to satisfy tax obligation of vested restricted stock.

F2 · balance_after: Includes an additional 23 shares acquired under the Employee Stock Purchase Plan since Mr. Daniels last Form 4 filing dated September 9, 2025. Mr. Daniels owns a total of 1,039 shares in the Employee Stock Purchase Plan as of the date of this report.

SEC source: 0001174850-25-000095 · form4.xml · nonDerivative · entry 1

Hutjens Brad Vincent · CIK 0001664629 · EVP - CCO - Nicolet Natl Bank

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,482

F1 · shares: Shares withheld to satisfy tax obligation of vested restricted stock.

F2 · balance_after: Includes 94 additional shares acquired under the Employee Stock Purchase Plan since Mr. Hutjens last Form 4 filing on November 27, 2024. Mr. Hutjens owns a total of 826 shares in the Employee Stock Purchase Plan as of the date of this report.

SEC source: 0001174850-25-000091 · form4.xml · nonDerivative · entry 1

BOHN WILLIAM M · CIK 0001192634 · EVP Wealth Mgmt - Nicolet Bank

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,443

F1 · shares: Shares withheld to satisfy tax obligation of vested restricted stock.

F2 · balance_after: Includes 45 shares acquired under the Employee Stock Purchase Plan since Mr. Bohn's last Form 4 filing dated April 17, 2025. Mr. Bohn owns a total of 94 shares in the Employee Stock Purchase Plan as of the date of this report.

SEC source: 0001174850-25-000087 · form4.xml · nonDerivative · entry 2

MOORE HUBERT PHILLIP JR · CIK 0001866582 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,716

F1 · shares: Shares withheld to satisfy tax obligation of vested restricted stock.

F2 · balance_after: 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 October 31, 2025. I own a total of 439 shares in the Employee Stock Purchase Plan as of the date of this report.

SEC source: 0001174850-25-000087 · form4.xml · nonDerivative · entry 1

MOORE HUBERT PHILLIP JR · CIK 0001866582 · CFO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Spouse's IRA

Disclosed balance after: 400

SEC source: 0001174850-25-000083 · form4.xml · nonDerivative · entry 1

Ghidorzi Christopher J. · CIK 0001487072 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,456

SEC source: 0001174850-25-000061 · form4.xml · nonDerivative · entry 1

MOORE HUBERT PHILLIP JR · CIK 0001866582 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,947

F1 · balance_after: Includes 44 shares acquired under the Employee Stock Purchase Plan, since my previous Form 4 filing dated June 10, 2025. I own a total of 439 shares in the Employee Stock Purchase Plan as of the date of this report.

SEC source: 0001174850-25-000065 · form4.xml · nonDerivative · entry 4

WEYERS ROBERT J · CIK 0001243734 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Colleen Weyers Trust

Disclosed balance after: 1,000

F5 · ownership.nature: Represents the holdings of Colleen Weyers Trust of which the reporting person is trustee. The reporting person disclaims beneficial ownership of registrant common stock held by Colleen Weyers Trust except to the extent of his pecuniary interest.

SEC source: 0001174850-25-000065 · form4.xml · nonDerivative · entry 3

WEYERS ROBERT J · CIK 0001243734 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Ronald Weyers Trust

Disclosed balance after: 1,000

F4 · ownership.nature: Represents the holdings of Ronald Weyers Trust of which the reporting person is trustee. The reporting person disclaims beneficial ownership of registrant common stock held by Ronald Weyers Trust except to the extent of his pecuniary interest.

SEC source: 0001174850-25-000065 · form4.xml · nonDerivative · entry 2

WEYERS ROBERT J · CIK 0001243734 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Weyers Family Limited Partnership

Disclosed balance after: 26,250

F3 · ownership.nature: Represents the holdings of Weyers Family Limited Partnership, of which the reporting person is a general partner. The reporting person disclaims beneficial ownership of registrant common stock held by Weyers Family Limited Partnership except to the extent of his pecuniary interest.