Exhibit 4.0


 


	COMMON STOCK	COMMON STOCK
	CERTIFICATE NO. __	SEE REVERSE FOR CERTAIN DEFINITIONS
	 	CUSIP ____________


 


MB BANCORP, INC.


INCORPORATED UNDER THE LAWS OF THE STATE
OF MARYLAND


 


	THIS CERTIFIES THAT	   [SPECIMEN]


 


is the owner of:


 


FULLY PAID AND NONASSESSABLE SHARES OF
COMMON STOCK,


$0.01 PAR VALUE PER SHARE, OF MB BANCORP,
INC.


 


The shares represented
by this certificate are transferable only on the stock transfer books of MB Bancorp, Inc. (the “Company”) by the holder
of record hereof, 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 of the Articles of
Incorporation of the Company and any amendments thereto (copies of which are on file with the Corporate Secretary of the Company),
to all of which provisions the holder by acceptance hereof, assents. This certificate is not valid until countersigned and registered
by the Company’s Transfer Agent and Registrar.


 


The shares evidenced
by this certificate are not of an insurable type and are not insured by the Federal Deposit Insurance Corporation.


 


IN WITNESS WHEREOF,
MB 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: __________________	 	       [SEAL]	 


 


	 	 	 
	President	 	Corporate Secretary


 




    	 



    	 



    

 


MB BANCORP, INC.


 


The shares represented
by this certificate are subject to a limitation contained in the Articles of Incorporation 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.


 


The Board of Directors
of the Company 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 Company 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 on any matter.


 


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 GIFTS MIN ACT - __________ custodian __________
	 	(Cust)                            (Minor) 







	TEN ENT  -  as tenants by the entireties	under Uniform Gifts to Minors Act ____________________
	 	(State)



JT TEN - as
joint tenants with right of


     survivorship and not
as tenants


     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


IDENTIFICATION NUMBER OF ASSIGNEE


 


 


	Please print or typewrite name and address including postal zip code of assignee.


 


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


 


 


	DATED  ______________________	 	 
	 	 	NOTICE:  The signature to this assignment must correspond with the name as written upon the face of the certificate in every particular without alteration or enlargement or any change whatever.


 


	SIGNATURE 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