Regulation FD Disclosure. In the Press Release, Nicolet also announced that it had declared a quarterly cash dividend of $0.36 per share on its common stock. The dividend is payable September 15, 2026, to shareholders of record as of September 1, 2026.

Results of Operations and Financial Condition. On July 21, 2026, Nicolet Bankshares, Inc. (“Nicolet”) issued a press release (the “Press Release”) announcing its earnings for the quarter ended June 30, 2026. A copy of the Press Release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Pursuant to General Instruction B.2 of Form 8-K, the information in this

Results of Operations and Financial Condition. On April 21, 2026, Nicolet Bankshares, Inc. (“Nicolet”) announced its earnings for the quarter ended March 31, 2026. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Pursuant to General Instruction B.2 of Form 8-K, the information in this

Director: Directors of Nicolet ceased to be directors due to the terms of the Merger Agreement.

of the Current Report on Form 8-K dated October 23, 2025, and filed by Nicolet with the U.S. Securities and Exchange Commission on October 23, 2025 (the “Prior Form 8-K”) reporting the entry into the Merger Agreement is incorporated by reference. Pursuant to the terms and conditions set forth in the Merger Agreement, at the effective time of the Merger (the “Effective Time”), each share of MidWestOne common stock issued and outstanding immediately prior to the Effective Time was converted int…

Completion of Acquisition or Disposition of Assets. Effective February 13, 2026 , Nicolet Bankshares, Inc. (“Nicolet” or the “Company”) completed its previously announced merger (the “Merger”) with MidWest One Financial Group, Inc. (“MidWest One ”), pursuant to the terms of the Agreement and Plan of Merger, dated October 23, 2025, by and between Nicolet and MidWest One (the “Merger Agreement”). At closing, MidWest One merged with and into Nicolet, with Nicolet surviving the Merger. Immediatel…

Equity awards were granted to the executive and senior management team for their involvement in the integration of MidWest One Financial Group, Inc.

Regulation FD Disclosure. On January 20, 2026, Nicolet’s Board of Directors approved a $60 million increase to the common stock repurchase authorization. At December 31, 2025, approximately $19 million remained available for common stock repurchases under the current board authorization. As of January 22, 2026, Nicolet had received all regulatory approvals for the MidWest One Merger and the Bank Merger. Assuming other closing conditions are satisfied, Nicolet expects to complete the MidWest O…

Results of Operations and Financial Condition. On January 20, 2026, Nicolet Bankshares, Inc. (“Nicolet”) announced its earnings for the quarter and year ended December 31, 2025. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Pursuant to General Instruction B.2 of Form 8-K, the information in this

Entry into a Material Definitive Agreement. On October 23, 2025, Nicolet Bankshares, Inc. (“Nicolet”) and MidWest One Financial Group, Inc. (“MidWest One ”) entered into an Agreement and Plan of Merger (the “Merger Agreement”), pursuant to which MidWest One will merge with and into Nicolet (the “Merger”). Nicolet and MidWest One have agreed to prepare and file with the Securities and Exchange Commission a registration statement on Form S-4, which will include a proxy statement/prospectus to b…

Results of Operations and Financial Condition. On October 23, 2025, Nicolet Bankshares, Inc. (“Nicolet”) announced its earnings for the quarter ended September 30, 2025. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Pursuant to General Instruction B.2 of Form 8-K, the information in this

Regulation FD Disclosure. On October 23, 2025, Nicolet Bankshares, Inc. (“Nicolet”) and MidWest One Financial Group, Inc. (“MidWest One ”) jointly announced the execution of a definitive merger agreement pursuant to which, upon the terms and subject to the conditions set forth therein, Nicolet will acquire MidWest One and its wholly-owned banking subsidiary MidWest One Bank. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K. In connection with the ann…

Mike Daniels: Compensatory equity award granted to Mike Daniels.

Results of Operations and Financial Condition. On July 15, 2025, Nicolet Bankshares, Inc. (“Nicolet”) announced its earnings for the quarter ended June 30, 2025. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Pursuant to General Instruction B.2 of Form 8-K, the information in this

Results of Operations and Financial Condition. On April 15, 2025, Nicolet Bankshares, Inc. (“Nicolet”) announced its earnings for the quarter ended March 31, 2025. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Pursuant to General Instruction B.2 of Form 8-K, the information in this

Results of Operations and Financial Condition. On January 21, 2025, Nicolet Bankshares, Inc. (“Nicolet”) announced its earnings for the quarter and year ended December 31, 2024. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Pursuant to General Instruction B.2 of Form 8-K, the information in this

Results of Operations and Financial Condition. On October 15, 2024, Nicolet Bankshares, Inc. (“Nicolet”) announced its earnings for the quarter ended September 30, 2024. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Pursuant to General Instruction B.2 of Form 8-K, the information in this

Results of Operations and Financial Condition. On July 16, 2024, Nicolet Bankshares, Inc. (“Nicolet”) announced its earnings for the quarter ended June 30, 2024. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Pursuant to General Instruction B.2 of Form 8-K, the information in this

Results of Operations and Financial Condition. On April 16, 2024, Nicolet Bankshares, Inc. (“Nicolet”) announced its earnings for the quarter ended March 31, 2024. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Pursuant to General Instruction B.2 of Form 8-K, the information in this

Results of Operations and Financial Condition. On January 16, 2024, Nicolet Bankshares, Inc. (“Nicolet”) announced its earnings for the quarter and year ended December 31, 2023. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Pursuant to General Instruction B.2 of Form 8-K, the information in this

Results of Operations and Financial Condition. On October 24, 2023, Nicolet Bankshares, Inc. (“Nicolet”) announced its earnings for the quarter ended September 30, 2023. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Pursuant to General Instruction B.2 of Form 8-K, the information in this

Results of Operations and Financial Condition. On July 18, 2023, Nicolet Bankshares, Inc. (“Nicolet”) announced its earnings for the quarter ended June 30, 2023. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Pursuant to General Instruction B.2 of Form 8-K, the information in this

Results of Operations and Financial Condition. On April 18, 2023, Nicolet Bankshares, Inc. (“Nicolet”) announced its earnings for the quarter ended March 31, 2023. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. In addition, Nicolet is providing a financial supplement furnished as Exhibit 99.2 to this Current Report on Form 8-K and is incorporated herein by reference. Pursuant to General Instruction B.2 of Fo…

Results of Operations and Financial Condition. On January 17, 2023, Nicolet Bankshares, Inc. (“Nicolet”) announced its earnings for the quarter and year ended December 31, 2022. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Pursuant to General Instruction B.2 of Form 8-K, the information in this

Results of Operations and Financial Condition. On October 25, 2022, Nicolet Bankshares, Inc. (“Nicolet”) announced its earnings for the quarter ended September 30, 2022. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Pursuant to General Instruction B.2 of Form 8-K, the information in this