EXHIBIT 4



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COMMON STOCK                      SFB BANCORP, INC.                        CUSIP
CERTIFICATE NO.

                               INCORPORATED UNDER THE
                           LAWS OF THE STATE OF TENNESSEE      SEE REVERSE FOR
                                                             CERTAIN DEFINITIONS

      THIS CERTIFIES THAT:

      IS THE OWNER OF:

                FULLY PAID AND NONASSESSABLE SHARES OF COMMON STOCK,
                            $0.10 PAR VALUE PER SHARE OF

                                  SFB Bancorp, Inc.

      The shares  represented by this certificate are  transferable  only on the
stock  transfer  books of the  corporation  by the  holder of  record  hereof in
person,  or by his duly authorized  attorney or legal  representative,  upon the
surrender of this certificate properly endorsed. This certificate and the shares
represented  hereby are issued and shall be held  subject to all the  provisions
contained  in  the  corporation's  official  corporate  papers  filed  with  the
Secretary  of the  State of  Tennessee  (copies  of which  are on file  with the
Transfer  Agent),  to all of the  provisions  the holder by  acceptance  hereof,
assents.

      This certificate is not valid unless  countersigned  and registered by the
Transfer Agent and Registrar.

                THIS SECURITY IS NOT A DEPOSIT OR ACCOUNT AND IS NOT
                          FEDERALLY INSURED OR GUARANTEED.

     In Witness  Whereof,  SFB Bancorp,  Inc. has caused this  certificate to be
executed by the  facsimile  signatures of its duly  authorized  officers and has
caused a facsimile of its corporate seal to be hereunto affixed.

DATED:

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PRESIDENT                                                              SECRETARY

                                        SEAL
                                  Incorporated 1997

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                                SFB BANCORP, INC.

      The shares  represented  by this  certificate  are subject to a limitation
contained  in  the  certificate  of   incorporation   of  the  corporation  (the
"Certificate")  to the effect  that in no event  shall any  record  owner of any
outstanding common stock which is beneficially owned, directly or indirectly, by
a person who  beneficially  owns in excess of 10% of the  outstanding  shares of
common  stock ( the  "Limit") be entitled or permitted to any vote in respect of
shares  held in excess of the Limit and may have  their  voting  rights  reduced
below the  Limit.  In  addition,  for five years  from the  initial  sale of the
corporation's  common stock, no person or entity may offer to acquire or acquire
over 10% of the then outstanding shares of any class of equity securities of the
corporation.

      The Board of Directors of the corporation is authorized by  resolution(s),
from time to time adopted, to provide for the issuance of serial preferred stock
in series and to fix and state the voting powers, designations, preferences, and
relative, participating, optional, or other special rights of the shares of each
such series and the qualifications,  limitations,  and restrictions thereof. The
corporation  will furnish to any  shareholder  upon request and without charge a
full description of each class of stock and any series thereof.

      The shares  represented by this certificate may not be cumulatively  voted
in the election of directors of the corporation. The Certificate also includes a
provision the effect of which is to require the approval of not less than 80% of
the  corporation's  voting  stock prior to the  corporation  engaging in certain
business  combinations (as defined in the Certificate)  with a person who is the
beneficial owner of 10% or more of the corporation's  outstanding  voting stock,
or  with  an  affiliate  or  associate   of  the   corporation   (a   "Principal
Stockholder"). This restriction does not apply if certain approvals are obtained
from the Board of  Directors.  The  affirmative  vote of  holders  of 80% of the
outstanding  shares  of  capital  stock  of the  corporation  entitled  to  vote
generally in the election of directors  (considered for this purpose as a single
class)  is  required  to  amend  this  and  certain  other   provisions  of  the
Certificate.

      The following  abbreviations,  when used in the inscription on the face of
this  certificate,  shall be  construed  as though they were written out in full
according to applicable laws or regulations:


                                                         
TEN COM -    as tenants in common           UNIF TRANS MIN ACT -   _______________Custodian_______________
                                                                       (Cus)                   (Minor)
TEN ENT -    as tenants by the entireties                          under Uniform Transfers to Minors Act

JT TEN  -    as joint tenants with right of                        -----------------------
             survivorship and not as tenants                                (State)
             in common


     Additional abbreviations may also be used though not in the above list.

     FOR VALUE RECEIVED __________________ hereby sell, assign and transfer unto

PLEASE INSERT SOCIAL SECURITY OR
OTHER IDENTIFYING NUMBER OF ASSIGNEE

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  (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS INCLUDING ZIP CODE OF ASSIGNEE)

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shares of the common stock  represented by the within  certificate and do hereby
irrevocably constitute and appoint
________________________________________________________________________Attorney
to  transfer  the  said  shares  on  the  books  of the  within  named 
corporation with full power of substitution in the premises.

Dated _____________________   X_________________________________________________

                              X_________________________________________________

      NOTICE: The signatures to this assignment must correspond with the name(s)
as  written  upon  the face of the  certificate  in  every  particular,  without
alteration or enlargement or any change whatever.

SIGNATURE(S) GUARANTEED:______________________________________________________
                        THE SIGNATURE(S) SHOULD  BE  GUARANTEED  BY  AN ELIGIBLE
                        GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND
                        LOAN ASSOCIATIONS, AND CREDIT UNIONS WITH MEMBERSHIP IN
                        AN  APPROVED  SIGNATURE  GUARANTEE  MEDALLION  PROGRAM)
                        PURSUANT TO S.E.C. RULE 17Ad-15.



Countersigned and Registered:




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                               Transfer Agent and Registrar



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                               Authorized Signature