1 unchanged sentence
Rule 10b5-1 Trading Arrangements
−Removed: For the quarter ended March 31, 2026, there were no trading arrangements for the sale or purchases of Company securities adopted, terminated or for which the amount, pricing or timing provisions were modified by our directors and officers that was either (1) a contract, instruction or written plan intended to satisfy the affirmative defense conditions of Rule 10b5-1 (c) (a “ Rule 10b5-1 trading arrangement”) or (2) a “ non-Rule 10b5-1 trading arrangement ” (as defined in Item 408(c) of Regulation S-K).
+Added: For the quarter ended June 30, 2026, there were no trading arrangements for the sale or purchases of Company securities adopted, terminated or for which the amount, pricing or timing provisions were modified by our directors and officers that was either (1) a contract, instruction or written plan intended to satisfy the affirmative defense conditions of Rule 10b5-1 (c) (a “ Rule 10b5-1 trading arrangement”) or (2) a “ non-Rule 10b5-1 trading arrangement ” (as defined in Item 408(c) of Regulation S-K).
Exhibit Index
Exhibit Number
+Added: Agreement and Plan of Merger, dated May 19, 2026, by and between Bank First Corporation and PSB Holdings, Inc.
+Added: (filed as Exhibit 2.1 to the Company’s Current Report on Form 8-K filed with the SEC on May 19, 2026 and incorporated herein by reference).
+Added: Side Letter Agreement, dated May 19, 2026, by and between Bank First Corporation and PSB Holdings, Inc.
+Added: (filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K filed with the SEC on May 19, 2026 and incorporated herein by reference).
Rule 13a-14(a) Certification of Chief Executive Officer*
12 unchanged sentences
BANK FIRST CORPORATION
+Added: August 7, 2026
Chief Financial Officer
1 unchanged sentence
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.