Document:

Exhibit 4.2

 

NUMBER

C SHARES

SEE REVERSE FOR

CERTAIN DEFINITIONS

CUSIP [●]

 

ONE MADISON CORPORATION

INCORPORATED UNDER THE LAWS OF THE CAYMAN ISLANDS

[CLASS A] [Class C] ORDINARY SHARE

 

This Certifies that __________________ is the
owner of _______.

 

FULLY PAID AND NON-ASSESSABLE SHARES OF THE
PAR VALUE OF $0.0001 EACH OF THE [CLASS A] [CLASS C] ORDINARY SHARES OF

 

ONE MADISON CORPORATION

(THE “COMPANY”)

 

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 by the date 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 ________________.

 

This certificate is not valid unless countersigned
by the Transfer Agent and registered by the Registrar. Witness the seal of the Company and the facsimile signatures of its duly
authorized officers.

 

	 	 	[Corporate Seal]	 	 
	Secretary	 	Cayman Islands	 	President

 

     

     

    

 

One Madison Corporation

 

The Company will furnish without charge to each
shareholder who so requests a statement of the powers, designations, preferences and relative, participating, optional or other
special rights of each class of equity 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 Amended and Restated Memorandum and Articles of Association of the Company 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 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
	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(S))
	 
	(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE(S))
	 
	 
	 
	[Class A] [Class C] Ordinary Shares represented by the within Certificate, and do hereby irrevocably constitutes and appoints
	 
	
        Attorney to transfer the said [Class A] [Class C] Ordinary Shares
        on the books of the within named Company 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 UNDER THE SECURITIES ACT OF 1933, AS AMENDED).

 

    	 	2	 

     

    

  

In each case, as more fully described in the
Company’s final prospectus dated ________________, 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 (i) in the event
that 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 24 months from the closing of its initial public offering or (ii) if the holder(s) (who
is not a director or officer of the Company and was not a shareholder of the Company immediately prior to the closing of its initial
public offering) seek(s) to redeem for cash his, her or its respective Class A Ordinary Shares in connection with (A) an amendment
to the Company’s Amended and Restated Memorandum and Articles of Association that would affect the substance or timing of
the Company's obligation to redeem 100% of the Class A Ordinary Shares if it does not consummate an initial business combination
within 24 months from the closing of its initial public offering, or (B) 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 4.3

 

[FACE]

 

	Number	 	 	 
	 	 	 	 
	 	 	Warrants	 
	 	 	 	 

 

THIS WARRANT SHALL BE VOID IF NOT EXERCISED
PRIOR TO THE EXPIRATION OF THE EXERCISE PERIOD PROVIDED FOR IN THE WARRANT AGREEMENT DESCRIBED BELOW

 

ONE MADISON CORPORATION

 

Incorporated Under the Laws of the Cayman
Islands

 

CUSIP [•]

 

Warrant Certificate

 

This Warrant Certificate certifies that
___________________, or registered assigns, is the registered holder of _____________ warrants (the “Warrants”)
to purchase Class A Ordinary Shares, $0.0001 par value, or Class C Ordinary Shares, $0.0001 par value, as applicable (collectively,
the “Ordinary Shares”), of One Madison Corporation, a Cayman Islands exempted company (the “Company”).
Each whole Warrant entitles the holder, upon exercise during the period set forth in the Warrant Agreement referred to below, to
receive from the Company that number of fully paid and non-assessable Ordinary Shares (each, a “Warrant”) as
set forth below, at the exercise price (the “Exercise Price”) as determined pursuant to the Warrant Agreement,
payable in lawful money (or through “cashless exercise” as provided for in the Warrant Agreement) of the United States
of America upon surrender of this Warrant Certificate and payment of the Exercise Price at the office or agency of the Warrant
Agent referred to below, subject to the conditions set forth herein and in the Warrant Agreement. Defined terms used in this Warrant
Certificate but not defined herein shall have the meanings given to them in the Warrant Agreement.

 

Each whole Warrant is initially exercisable
for one fully paid and non-assessable Ordinary Share. No fractional shares will be issued upon exercise of any Warrant. If, upon
the exercise of Warrants, a holder would be entitled to receive a fractional interest in an Ordinary Share, the Company will, upon
exercise, round down to the nearest whole number the number of Ordinary Shares to be issued to the Warrant holder. The number of
the Ordinary Shares issuable upon exercise of the Warrants is subject to adjustment upon the occurrence of certain events set forth
in the Warrant Agreement.

 

The initial Exercise Price per Ordinary Share
for any Warrant is equal to $11.50 per share. The Exercise Price is subject to adjustment upon the occurrence of certain events
set forth in the Warrant Agreement.

 

     

     

    

  

Subject to the conditions set forth in the Warrant
Agreement, the Warrants may be exercised only during the Exercise Period and to the extent not exercised by the end of such Exercise
Period, such Warrants shall become void.

 

Reference is hereby made to the further provisions
of this Warrant Certificate set forth on the reverse hereof and such further provisions shall for all purposes have the same effect
as though fully set forth at this place.

 

This Warrant Certificate shall not be valid
unless countersigned by the Warrant Agent, as such term is used in the Warrant Agreement.

 

This Warrant Certificate shall be governed and
construed in accordance with the internal laws of the State of New York, without regard to conflicts of laws principles thereof.

 

	 	ONE MADISON CORPORATION
	 	 	 
	 	By:	 
	 	 	Name:
	 	 	Title:
	 	 	 
	 	CONTINENTAL STOCK TRANSFER & TRUST COMPANY, as Warrant Agent
	 	 	 
	 	By:	 
	 	 	Name:
	 	 	Title:

 

    	 	2	 

     

    

  

[Reverse]

 

The Warrants evidenced by this Warrant Certificate
are part of a duly authorized issue of Warrants entitling the holder on exercise to receive Ordinary Shares and are issued or to
be issued pursuant to a Warrant Agreement dated as of ___________ (the “Warrant Agreement”), duly executed and
delivered by the Company to Continental Stock Transfer & Trust Company, a New York corporation, as warrant agent (the “Warrant
Agent”), which Warrant Agreement is hereby incorporated by reference in and made a part of this instrument and is hereby
referred to for a description of the rights, limitation of rights, obligations, duties and immunities thereunder of the Warrant
Agent, the Company and the holders (the words “holders” or “holder” meaning the Registered
Holders or Registered Holder, respectively) of the Warrants. A copy of the Warrant Agreement may be obtained by the holder hereof
upon written request to the Company. Defined terms used in this Warrant Certificate but not defined herein shall have the meanings
given to them in the Warrant Agreement.

 

Warrants may be exercised at any time during
the Exercise Period set forth in the Warrant Agreement. The holder of Warrants evidenced by this Warrant Certificate may exercise
them by surrendering this Warrant Certificate, with the form of election to purchase set forth hereon properly completed and executed,
together with payment of the Exercise Price as specified in the Warrant Agreement (or through “cashless exercise” as
provided for in the Warrant Agreement) at the principal corporate trust office of the Warrant Agent. In the event that upon any
exercise of Warrants evidenced hereby the number of Warrants exercised shall be less than the total number of Warrants evidenced
hereby, there shall be issued to the holder hereof or his, her or its assignee, a new Warrant Certificate evidencing the number
of Warrants not exercised.

 

Notwithstanding anything else in this Warrant
Certificate or the Warrant Agreement, no Warrant may be exercised unless at the time of exercise (i) a registration statement covering
the Class A Ordinary Shares issuable upon exercise of the Warrants is effective under the Securities Act and (ii) a prospectus
relating thereto is current, except through “cashless exercise” as provided for in the Warrant Agreement. Further,
no Warrant may be exercised unless the Ordinary Shares issuable upon such Warrant exercise have been registered, qualified or deemed
to be exempt under the securities laws of the state of residence of the Registered Holder of the Warrants.

 

The Warrant Agreement provides that upon the
occurrence of certain events the number of Ordinary Shares issuable upon the exercise of the Warrants set forth on the face hereof
may, subject to certain conditions, be adjusted. If, upon exercise of a Warrant, the holder thereof would be entitled to receive
a fractional interest in an Ordinary Share, the Company shall, upon exercise, round down to the nearest whole number of Ordinary
Shares to be issued to the holder of the Warrant.

 

    	 	3	 

     

    

  

Warrant Certificates, when surrendered at the
principal corporate trust office of the Warrant Agent by the Registered Holder thereof in person or by legal representative or
attorney duly authorized in writing, may be exchanged, in the manner and subject to the limitations provided in the Warrant Agreement,
but without payment of any service charge, for another Warrant Certificate or Warrant Certificates of like tenor evidencing in
the aggregate a like number of Warrants.

 

Upon due presentation for registration of transfer
of this Warrant Certificate at the office of the Warrant Agent a new Warrant Certificate or Warrant Certificates of like tenor
and evidencing in the aggregate a like number of Warrants shall be issued to the transferee(s) in exchange for this Warrant Certificate,
subject to the limitations provided in the Warrant Agreement, without charge except for any tax or other governmental charge imposed
in connection therewith.

 

The Company and the Warrant Agent may deem and
treat the Registered Holder(s) hereof as the absolute owner(s) of this Warrant Certificate (notwithstanding any notation of ownership
or other writing hereon made by anyone), for the purpose of any exercise hereof, of any distribution to the holder(s) hereof, and
for all other purposes, and neither the Company nor the Warrant Agent shall be affected by any notice to the contrary. Neither
the Warrants nor this Warrant Certificate entitles any holder hereof to any rights of a shareholder of the Company.

 

    	 	4	 

     

    

  

Election to Purchase

 

(To Be Executed Upon Exercise of Warrant)

 

The undersigned hereby irrevocably elects to
exercise the right, represented by this Warrant Certificate, to receive ____________ [Class A] / [Class C] Ordinary Shares and
herewith tenders payment for such Ordinary Shares to the order of One Madison Corporation (the “Company”) in
the amount of $__________ in accordance with the terms hereof. The undersigned requests that a certificate for such Ordinary Shares
be registered in the name of ___________, whose address is ___________________________ and that such Ordinary Shares be delivered
to _______________________ whose address is _________________________________. If said number of shares is less than all of the
Ordinary Shares purchasable hereunder, the undersigned requests that a new Warrant Certificate representing the remaining balance
of such Ordinary Shares be registered in the name of _____________________________, whose address is __________________ and that
such Warrant Certificate be delivered to _____________________________, whose address is ___________________________.

 

In the event that the Warrant has been called
for redemption by the Company pursuant to Section 6 of the Warrant Agreement and the Company has required cashless exercise
pursuant to Section 6.3 of the Warrant Agreement, the number of Ordinary Shares that this Warrant is exercisable for shall
be determined in accordance with subsection 3.3.1(b) and Section 6.3 of the Warrant Agreement.

 

In the event that the Warrant is a Private Placement
Warrant that is to be exercised on a “cashless” basis pursuant to subsection 3.3.1(c) of the Warrant Agreement,
the number of Ordinary Shares that this Warrant is exercisable for shall be determined in accordance with subsection 3.3.1(c)
of the Warrant Agreement.

 

In the event that the Warrant is to be exercised
on a “cashless” basis pursuant to Section 7.4 of the Warrant Agreement, the number of Ordinary Shares that this
Warrant is exercisable for shall be determined in accordance with Section 7.4 of the Warrant Agreement.

 

In the event that the Warrant may be exercised,
to the extent allowed by the Warrant Agreement, through cashless exercise (i) the number of Ordinary Shares that this Warrant is
exercisable for would be determined in accordance with the relevant section of the Warrant Agreement which allows for such cashless
exercise and (ii) the holder hereof shall complete the following: The undersigned hereby irrevocably elects to exercise the right,
represented by this Warrant Certificate, through the cashless exercise provisions of the Warrant Agreement, to receive Ordinary
Shares. If said number of shares is less than all of the Ordinary Shares purchasable hereunder (after giving effect to the cashless
exercise), the undersigned requests that a new Warrant Certificate representing the remaining balance of such Ordinary Shares be
registered in the name of _____________________________, whose address is __________________ and that such Warrant Certificate
be delivered to _____________________________, whose address is ___________________________.

 

[Signature Page follows]

 

    	 	5	 

     

    

  

	Date: ____________, 20__	 	 
	 	 	 
	 	 	 
	 	 	(Signature)
	 	 	 
	 	 	 
	 	 	 
	 	 	 
	 	 	 
	 	 	 
	 	 	 
	 	 	(Address)
	 	 	
	 	 	 
	 	 	(Tax Identification Number)
	 	 	 
	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 SEC RULE 17Ad-15 UNDER THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED).

 

    	 	6

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