Document:

Exhibit 4.1

 

NUMBER
UNITS

U-[●]

 

SEE
REVERSE FOR CERTAIN

DEFINITIONS

 

CUSIP
48242A 203

 

KBL
MERGER CORP. IV

 

UNITS
CONSISTING OF ONE SHARE OF COMMON STOCK AND ONE WARRANT TO

PURCHASE
ONE SHARE OF COMMON STOCK

 

THIS
CERTIFIES THAT                                         is
the owner of                     Units.

 

Each
Unit (“Unit”) consists of one (1) share of common stock, par value $0.0001 per share (“Common
Stock”), of KBL Merger Corp. IV, a Delaware corporation (the “Company”), and one
warrant (the “Warrant”). Each Warrant entitles the holder to purchase one share (subject to
adjustment) of Common Stock for $11.50 per share (subject to adjustment). Each Warrant will become exercisable on the later
of (i) thirty (30) days after the Company’s completion of a merger, capital stock exchange, asset acquisition,
stock purchase, reorganization or other similar business combination with one or more businesses or entities (each a “Business
Combination”), or (ii) twelve (12) months from the closing of the Company’s initial public offering,
and will expire unless exercised before 5:00 p.m., New York City Time, on the date that is five (5) years after the date
on which the Company completes its initial Business Combination, or earlier upon redemption or liquidation (the “Expiration
Date”). The Common Stock and Warrants comprising the Units represented by this certificate are not transferable
separately prior to [_______], 2017, unless Ladenburg Thalmann & Co. Inc. elects to allow separate trading earlier, subject
to the Company’s filing of a Current Report on Form 8-K with the Securities and Exchange Commission containing an audited
balance sheet reflecting the Company’s receipt of the gross proceeds of the offering and issuing a press release announcing
when separate trading will begin. The terms of the Warrants are governed by a Warrant Agreement, dated as of [_________],
2017, between the Company and Continental Stock Transfer & Trust Company, as Warrant Agent, and are subject to the terms
and provisions contained therein, all of which terms and provisions the holder of this certificate consents to by acceptance hereof. Copies
of the Warrant Agreement are on file at the office of the Warrant Agent at 17 Battery Place, New York, New York 10004, and
are available to any Warrant holder on written request and without cost.

 

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

 

Witness
the facsimile signature of its duly authorized officers.

 

	 	 	 
	Secretary	 	President

 

     

     

    

 

KBL
MERGER CORP. IV

 

The
Company will furnish without charge to each unitholder who so requests, a statement of the powers, designations, preferences and
relative, participating, optional or other special rights of each class of stock or series thereof of the Company and the qualifications,
limitations, or restrictions of such preferences and/or rights.

 

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
    GIFT MIN ACT	 	—	 	                 Custodian
	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 	 	 	 	 

	 	 
	TEN ENT	 	 	—	 	 	as
    tenants by the entireties	 	 	 	 	 	(Cust)
	 	 	 	 	 	 	 	 	 	 	 	 	(Minor)
	 	 	 	 	 	 	 	 	 	 	 	 	Under
    Uniform Gifts to Minors
	 	 	 	 	 	 
	JT
    TEN	 	 	—	 	 	as
        joint tenants with right of survivorship and not as tenants in common

         
	 	 	 	 	 	Act                     

        (State)

 

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

 

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

 

                         
               Units represented by the within
Certificate, and do hereby irrevocably constitute and appoint

 

                        
                                         
    Attorney to transfer the said Units 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(s) Guaranteed:	 	 
	 	 	 

 

THE
SIGNATURE(S) MUST 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).

 

In
each case, as more fully described in the Company’s final prospectus dated [___________], 2017, the holder(s) of this certificate
shall be entitled to receive a pro-rata portion of certain funds held in the trust account established in connection with its
initial public offering only in the event that the Company redeems the shares of common stock underlying this certificate and
liquidates because it does not consummate an initial business combination by the date set forth in the Company’s Amended
and Restated Certificate of Incorporation, as the same may be amended from time to time, or if the holder(s) seek(s) to redeem
for cash his, her or its respective shares of common stock underlying this certificate in connection with a tender offer (or proxy
solicitation, solely in the event the Corporation seeks stockholder approval of the proposed initial business combination) setting
forth the details of a proposed initial business combination or in connection with certain amendments to the Company’s Amended
and Restated Certificate of Incorporation. In no other circumstances shall the holder(s) have any right or interest of any kind
in or to the trust account.Exhibit 4.2

 

NUMBER

 

	C	NUMBER
	 	SHARES
	 	SEE REVERSE
    FOR
	 	CERTAIN
    DEFINITIONS
	 	CUSIP
     48242A 104

 

KBL
MERGER CORP. IV

INCORPORATED
UNDER THE LAWS OF THE STATE OF DELAWARE

COMMON
STOCK

 

This Certifies that                    
                                         
                                         
                                         
           

is the owner of                    
                                         
                                         
                                         
                

 

FULLY
PAID AND NON-ASSESSABLE SHARES OF THE PAR VALUE OF $0.0001 EACH OF THE COMMON STOCK OF

 

KBL
MERGER CORP. IV

(THE
“CORPORATION”)

 

transferable
on the books of the Corporation in person or by duly authorized attorney upon surrender of this certificate properly endorsed.

 

The
Corporation will be forced to redeem all of its shares of common stock if it is unable to complete a business combination within
the time frame set forth in the Corporation’s Amended and Restated Certificate of Incorporation, as the same may be amended
from time to time, as more fully described in the Corporation’s final prospectus dated [__________], 2017.

 

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

 

Witness
the seal of the Corporation and the facsimile signatures of its duly authorized officers.

 

	 	 	 	 	 	 	 
	 	 	 	 	[Corporate
        Seal]	 	 
	Secretary	 	 	 	Delaware
	 	President

 

     

     

    

 

KBL
MERGER CORP. IV

 

The
Corporation will furnish without charge to each stockholder who so requests the powers, designations, preferences and relative,
participating, optional or other special rights of each class of stock or series thereof of the Corporation and the qualifications,
limitations, or restrictions of such preferences and/or rights. This certificate and the shares represented thereby are issued
and shall be held subject to all the provisions of the Certificate of Incorporation and all amendments thereto and resolutions
of the Board of Directors providing for the issue of securities (copies of which may be obtained from the secretary of the Corporation),
to all of which the holder of this certificate by acceptance hereof assents. 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 GIFT MIN ACT —	 	                 Custodian        
             
	TEN
    ENT	 	—	 	as
    tenants by the entireties	 	 	 	  (Cust)	 	(Minor)
	JT
    TEN	 	—	 	as
    joint tenants with right	 	 	 	under Uniform Gifts to Minors
	 	 	 	 	of
    survivorship and not as tenants in common	 	 	 	 
	 	 	 	 	 	 	Act	 	 
	 	 	 	 	 	 	 	 	(State)
	 	 	 	 	 	 	 	 	 	 	 

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

 

For
value received,                                       
  hereby sells, assigns and transfers unto

 

 

 

(PLEASE
INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER(S) OF ASSIGNEE(S))

 

 

 

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

 

 

 

 

 

 

 

 

 

 

Shares
of the capital stock represented by the within Certificate, and do hereby irrevocably constitutes and appoints

 

 

 

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(S) 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(s)
Guaranteed:

By

 

 

 

THE
SIGNATURE(S) MUST 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).

 

In
each case, as more fully described in the Corporation’s final prospectus dated [________], 2017, the holder(s) of this certificate
shall be entitled to receive a pro-rata portion of certain funds held in the trust account established in connection with its
initial public offering only in the event that the Corporation redeems the shares of common stock represented by this certificate
and liquidates because it does not consummate an initial business combination by the date set forth in the Corporation’s
Amended and Restated Certificate of Incorporation, as the same may be amended from time to time, or if the holder(s) seek(s) to
redeem for cash his, her or its respective shares of common stock in connection with a tender offer (or proxy solicitation, solely
in the event the Corporation seeks stockholder approval of the proposed initial business combination) setting forth the details
of a proposed initial business combination or in connection with certain amendments to the Corporation’s Amended and Restated
Certificate of Incorporation. In no other circumstances shall the holder(s) have any right or interest of any kind in or to the
trust account.

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