Bank First Corporation Watch

from 10-K 2 pages Bank First Corporation Description of Registered Securities

from 10-K 2 pages Bank First Corporation Description of Registered Securities

from 10-K 2 pages Bank First Corporation Description of Registered Securities

from 10-K 2 pages Bank First Corporation Description of Registered Securities

from 10-K 2 pages Bank First Corporation Description of Registered Securities

from 10-K 2 pages Bank First Corporation Description of Registered Securities

from S-8 65 pages Bank First National Retirement Plan Amended and Restated Effective January 1, 2017 Bank First National Retirement Plan

from 10-12B 2 pages Number Shares1955 Bankfirstnational Corporationincorporated Under the Laws of the State of Wisconsin See Reverse Side for Certain Definitions Cusip 06211j 10 0this Certifies Thatspecimenis the Owner Offully Paid and Non-Assessable Common Shares, $.01 Par Value, of Bank First National Corporation Transferable on the Books of the Corporation by the Holder Hereof in Person or by Attorney Upon Surrender of This Certificate Properly Endorsed. This Certificate Is Not Valid Until Countersigned and Registered, by the Transfer Agent and REGISTRAR.IN Witness Whereof, the Said Corporation Has Caused This Certificate to Be Signed by Facsimile Signatures of Its Duly Authorized OFFICERS.COUNTERSIGNED and Registered:equiniti Trust Companybytransfer Agent and Registrarauthorized Signaturedated:general Counsel/Corporate Secretarypresidentamerican Financial Printing Incorporated – Minneapolis