# EDGAR Filing Document

**Accession Number:** 0001746109
**File Stem:** 9999999995-25-003231
**Filing Date:** 2025-9
**Character Count:** 1368
**Document Hash:** d70a07de6dadd1f0694d311d28b59625
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-25-003231.hdr.sgml**: 20251001

**ACCESSION NUMBER**: 9999999995-25-003231

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250930

**DATE AS OF CHANGE**: 20251001

**EFFECTIVENESS DATE**: 20250930

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Bank First Corp
- **CENTRAL INDEX KEY:** 0001746109
- **STANDARD INDUSTRIAL CLASSIFICATION:** NATIONAL COMMERCIAL BANKS [6021]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 391435359
- **STATE OF INCORPORATION:** WI
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-290230
- **FILM NUMBER:** 251362396

**BUSINESS ADDRESS:**
- **STREET 1:** 402 NORTH EIGHTH STREET
- **CITY:** MANITOWOC
- **STATE:** WI
- **ZIP:** 54220
- **BUSINESS PHONE:** 920-652-3100

**MAIL ADDRESS:**
- **STREET 1:** 402 NORTH EIGHTH STREET
- **CITY:** MANITOWOC
- **STATE:** WI
- **ZIP:** 54220

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Bank First National Corp
- **DATE OF NAME CHANGE:** 20180711

### UNITED STATES
### SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## Notice of Effectiveness

**Date:** September 30, 2025

**Time:** 17:00:00

**Form Type:** S-4

---

**CIK:** 0001746109

**Company Name:** Bank First Corp

**File Number:** 333-290230