Document:

Exhibit 4.1

 

SPECIMEN UNIT CERTIFICATE

 

NUMBER UNITS U-

 

SEE REVERSE FOR CERTAIN DEFINITIONS

 

Horizon Acquisition Corporation II

CUSIP [ ]

 

UNITS CONSISTING OF ONE CLASS A ORDINARY
SHARE AND ONE-THIRD OF ONE REDEEMABLE WARRANT TO PURCHASE ONE CLASS A ORDINARY SHARE THIS CERTIFIES THAT is the owner of Units.

 

Each Unit (“Unit”) consists
of one (1) Class A ordinary share, par value $0.0001 per share (“Ordinary Shares”), of Horizon Acquisition
Corporation II, a Cayman Islands exempted company (the “Company”), and one-third (1/3) of one redeemable warrant (each
whole warrant, a “Warrant”). Each Warrant entitles the holder to purchase one (1) Ordinary Share 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, share exchange, asset acquisition, share purchase, reorganization or other similar business combination
with one or more businesses (each, a “Business Combination”), and (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 Ordinary Shares and Warrants comprising the Units represented by this certificate
are not transferable separately prior to [●], 2020, unless Deutsche Bank Securities Inc. elects to allow earlier separate
trading, subject to the Company’s filing with the Securities and Exchange Commission of a Current Report on Form 8-K
containing an audited balance sheet reflecting the Company’s receipt of the gross proceeds of the initial public offering
and issuing a press release announcing when separate trading will begin. No fractional warrants will be issued upon separation
of the Units and only warrant are exercisable. The terms of the Warrants are governed by a Warrant Agreement, dated as of [●],
2020, 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 1 State Street, 30th Floor, New York, New York
10004, and are available to any Warrant holder on written request and without cost.

 

Upon the consummation of the Business Combination,
the Units represented by this certificate will automatically separate into the Ordinary Shares and Warrants comprising such Units.

 

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

 

This certificate shall be governed by and
construed in accordance with the internal laws of the State of New York. Witness the facsimile signatures of its duly authorized
officers.

 

	By	                   
     	 	 
	Chief Executive Officer	 	Chief Financial Officer

 

     

     

    

 

Horizon Acquisition Corporation II

 

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 shares 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

 

	 	 	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	(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 sells, assigns and transfers 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 Company 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 OR ANY SUCCESSOR RULES).

 

In each case, as more fully described in
the Company’s final prospectus dated [●], 2020, 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 the Company’s initial public
offering only in the event that (i) the Company redeems the Ordinary Shares sold in its initial public offering and liquidates
because it does not consummate an initial business combination within the period of time set forth in the Company’s amended
and restated memorandum and articles of association, as the same may be amended from time to time, (ii) the Company redeems
the Ordinary Shares sold in its initial public offering in connection with a shareholder vote to amend the Company’s amended
and restated memorandum and articles of association (A) to modify the substance or timing of the Company’s obligation
to allow redemptions in connection with the Company’s initial business combination or to redeem 100% of the Ordinary Shares
if it does not complete its initial business combination within the time period required by the Company’s Amended and Restated
Memorandum and Articles of Association, as amended from time to time, or (B) with respect to any other provision relating
to shareholders’ rights or pre-initial business combination activity, or (iii) if the holder(s) seek(s) to
redeem for cash his, her or its respective Ordinary Shares in connection with a tender offer (or proxy solicitation, solely in
the event the Company seeks shareholder approval of the proposed initial business combination) setting forth the details of a proposed
initial business combination. In no other circumstances shall the holder(s) have any right or interest of any kind in or to
the trust account.

 

    3Exhibit 4.2

 

SPECIMEN CLASS A ORDINARY SHARE
CERTIFICATE

 

NUMBER SHARES

 

HORIZON ACQUISITION CORPORATION II INCORPORATED

UNDER THE LAWS OF THE CAYMAN ISLANDS CLASS A ORDINARY SHARES

 

SEE REVERSE FOR CERTAIN DEFINITIONS

 

CUSIP [●]

 

This Certifies that is the owner of FULLY
PAID AND NON-ASSESSABLE CLASS A ORDINARY SHARES OF THE PAR VALUE OF US$0.0001 EACH OF HORIZON ACQUISITION CORPORATION II (THE
 “COMPANY”) subject to the Company’s amended and restated memorandum and articles of association, as the same
may be amended from time to time, and transferable on the books of the Company in person or by duly authorized attorney upon surrender
of this certificate properly endorsed.

 

The Company will be forced to redeem all
of its Class A ordinary shares if it is unable to complete a business combination within the period of time set forth in the
Company’s amended and restated memorandum and articles of association, as the same may be amended from time to time, all
as more fully described in the Company’s final prospectus dated [●], 2020.

 

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

 

Witness the facsimile signatures of its
duly authorized officers.

 

	Dated:	 	 	 

 

Cayman Islands

 

	 	                   
     	 	 
	Chief Executive Officer	 	Chief Financial Officer

 

    

     

    

 

HORIZON ACQUISITION CORPORATION II

 

The Company will furnish without charge
to each shareholder who so requests the powers, designations, preferences and relative, participating, optional or other special
rights of each class of shares or series thereof of the Company 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 Company’s amended and restated memorandum and articles of association, as the same may be amended from time to time,
and resolutions of the Board of Directors providing for the issue of Class A ordinary shares (copies of which may be obtained
from the secretary of the Company), 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

 

	 	 	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	(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 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 represented by the within Certificate,
and does hereby irrevocably constitute and appoint Attorney to transfer the said shares on the books of the within named Company
with full power of substitution in the premises.

 

 

 

	Dated:	 	 	 
	 	 	 	Shareholder
	 	 	 	 
	 	 	 	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 OR ANY SUCCESSOR RULE).

 

In each case, as more fully described in
the Company’s final prospectus dated [●], 2020, 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 (i) the Company redeems the Class A ordinary shares sold in its initial public offering and liquidates
because it does not consummate an initial business combination within the period of time set forth in the Company’s amended
and restated memorandum and articles of association, as the same may be amended from time to time, (ii) the Company redeems
the Class A ordinary shares sold in its initial public offering in connection with a shareholder vote to amend the Company’s
amended and restated memorandum and articles of association (A) to modify the substance or timing of the Company’s obligation
to allow redemptions in connection with the Company’s initial business combination or to redeem 100% of the Class A
ordinary shares if it does not complete its initial Business Combination within the time period required by the Company’s
Amended and Restated Memorandum and Articles of Association, as amended from time to time, or (B) with respect to any other
provision relating to shareholders’ rights or pre-initial business combination activity, or (iii) if the holder(s) seek(s) to
redeem for cash his, her or its respective Class A ordinary shares in connection with a tender offer (or proxy solicitation,
solely in the event the Company seeks shareholder approval of the proposed initial business combination) setting forth the details
of a proposed initial business combination. In no other circumstances shall the holder(s) have any right or interest of any
kind in or to the trust account.

 

    6

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