Document:

EX-4.2

 Exhibit 4.2 

NUMBER 
  

			
		  	 NUMBER
 C

SHARES
 SEE REVERSE FOR

CERTAIN DEFINITIONS
 CUSIP

 POST HOLDINGS PARTNERING CORPORATION 

INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE 

SERIES A COMMON STOCK 
 This
Certifies that ____________________________________________________________________________________________ 
 is the owner of
_______________________________________________________________________________________________ 
 FULLY PAID AND
NON-ASSESSABLE SHARES OF SERIES A COMMON STOCK OF THE PAR VALUE OF $0.0001 EACH OF 
 POST
HOLDINGS PARTNERING CORPORATION 
 (THE “COMPANY”) 

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

Subject to the Company’s amended and restated certificate of incorporation (as may be amended from time to time, the “restated certificate”),
the shares of Series A common stock will be redeemed by the Company if it is unable to complete a partnering transaction within the period of time set forth in the restated certificate, or by such later date approved by the Company’s
stockholders in accordance with the restated certificate, all as more fully described in the Company’s final prospectus dated                  , 2021. 

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. 
  

					
	Secretary	  	[Corporate Seal]
Delaware	  	Principal Executive Officer
			
	   
	  	  
	  	   

 POST HOLDINGS PARTNERING CORPORATION 

The Company 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 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 restated certificate 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
	 JT TEN
	  	—	  	as joint tenants with right of survivorship and not as tenants in common	  		  	 Minors Act

(State)

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

For value received, _______________hereby sell(s), assign(s) and transfer(s) 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(es) hereby irrevocably constitutes and appoints 

 
  

Attorney to transfer the said stock on the books of the within named Company with full power of substitution in the premises. 

  
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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 (OR ANY SUCCESSOR RULE) UNDER THE SECURITIES
EXCHANGE ACT OF 1934, AS AMENDED). 
 In each case, as more fully described in the Company’s final prospectus dated
                 , 2021, 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, subject to the restated certificate, (i) the Company redeems the shares of Series A common stock sold in its initial public
offering and liquidates because it does not consummate a partnering transaction within the period of time set forth in the restated certificate, (ii) the Company redeems the shares of Series A common stock sold in its initial public offering in
connection with a stockholder vote to amend the restated certificate (A) to modify the substance or timing of the Company’s obligation to allow redemptions in connection with the Company’s partnering transaction or to redeem 100% of
the Series A common stock if it does not complete its partnering transaction within the period of time set forth in the restated certificate , or (B) with respect to any other provision relating to the holder(s) rights or pre-partnering transaction activity, or (iii) if the holder(s) seek(s) to redeem for cash his, her, its or their respective shares of Series A common stock in connection with a tender offer (or proxy
solicitation, solely in the event the Company seeks stockholder approval of the proposed partnering transaction) setting forth the details of a proposed partnering transaction. In no other circumstances shall the holder(s) have any right or interest
of any kind in or to the trust account. 

  
 3EX-4.4

 Exhibit 4.4 

POST HOLDINGS PARTNERING CORPORATION 

and 
 CONTINENTAL STOCK
TRANSFER & TRUST COMPANY 
 WARRANT AGREEMENT 

Dated as of                , 2021 

THIS WARRANT AGREEMENT (this “Agreement”), dated as
of                , 2021, is by and between Post Holdings Partnering Corporation, a Delaware corporation (the “Company”), Continental Stock
Transfer & Trust Company, a New York corporation, as warrant agent (in such capacity, the “Warrant Agent”). 

WHEREAS, the Company has entered into that certain Private Placement Units Purchase Agreement with PHPC Sponsor, LLC, a Delaware limited
liability company (the “Sponsor”), pursuant to which the Sponsor agreed to purchase an aggregate of 1,200,000 units (or 1,320,000 units in the aggregate if the Over-allotment Option (as defined below) in connection with the
Company’s Offering (as defined below) is exercised in full) simultaneously with the closing of the Offering (and the closing of the Over-allotment Option, if applicable) (the “Private Placement Units”) at a purchase price of
$10.00 per Private Placement Unit. The Private Placement Units include an aggregate of 240,000 private placement warrants (or 264,000 private placement warrants if the Over-allotment Option is exercised in full) (the “Private Placement
Warrants”) bearing the legend set forth in Exhibit B hereto. Each Private Placement Warrant entitles the holder thereof to purchase one share of Series A Common Stock (as defined below) at a price of $11.50 per share, subject to adjustment
as described herein; 
 WHEREAS, the Company has entered into that certain Forward Purchase Agreement with the Sponsor, pursuant to which
the Sponsor has agreed to purchase an aggregate of 10,000,000 forward purchase units, which consist in the aggregate of 10,000,000 shares of the Company’s Series B common stock, par value $0.0001 per share (the “Series B Common
Stock”), and 2,000,000 redeemable warrants (the “Forward Purchase Warrants”) in a private placement transaction to occur substantially concurrently with the closing of the Company’s Partnering Transaction (as defined
below). Each Forward Purchase Warrant will entitle the holder thereof to purchase one share of the Company’s Series A common stock, par value $0.0001 per share (the “Series A Common Stock”), for $11.50 per share, subject to
adjustment, terms and limitations as described herein; 
 WHEREAS, as used in this Agreement, the term “Common Stock” means
the Series A Common Stock; provided, however, that following any event described in Section 4.1.1(b) pursuant to which the Warrants become exercisable for shares of the Company’s Series C common stock,
par value $0.0001 per share (the “Series C Common Stock”), in addition to Series A Common Stock, the term “Common Stock” shall be read to include the Series A Common Stock and Series C Common Stock, where applicable; 

 WHEREAS, in order to finance the Company’s transaction costs in connection with an
intended initial merger, share exchange, asset acquisition, share purchase, reorganization or similar partnering transaction, involving the Company and one or more businesses (a “Partnering Transaction”), the Sponsor, Post Holdings,
Inc., a Missouri corporation and the parent of the Sponsor and any successor thereto (“Post”), and its subsidiaries may, but are not obligated to, loan the Company funds as the Company may require, of which up to $2,500,000 of such
loans made to the Company may be convertible into up to an additional 250,000 Private Placement Units at a price of $10.00 per Private Placement Unit, and the Private Placement Warrants underlying such Private Placement Units issued in this way
shall have the same terms and be in the same form as the other Private Placement Warrants described under this Agreement; 
 WHEREAS, the
Company is engaged in an initial public offering (the “Offering”) of units of the Company’s equity securities, each such unit comprised of one share of Series A Common Stock and one-fifth
of one Public Warrant (as defined below) (the “Units”) and, in connection therewith, has determined to issue and deliver up to 9,200,000 redeemable warrants (including up to 1,200,000 redeemable warrants subject to the
Over-allotment Option) to public investors in the Offering (the “Public Warrants” and, together with the Private Placement Warrants and the Forward Purchase Warrants, the “Warrants”). Each whole Warrant entitles the
holder thereof to purchase one share of Series A Common Stock, for $11.50 per whole share, subject to adjustments, terms and limitations as described herein. Only whole warrants are exercisable. A holder of the Public Warrants will not be able to
exercise any fraction of a Warrant; 
 WHEREAS, the Company has filed with the Securities and Exchange Commission (the
“Commission”) a registration statement on Form S-1, File No. 333-252910 (the “Registration Statement”) and prospectus (the
“Prospectus”), for the registration, under the Securities Act of 1933, as amended (the “Securities Act”), of the Units, the Public Warrants and the shares of Series A Common Stock included in the Units; 

WHEREAS, the Company desires the Warrant Agent to act on behalf of the Company, and the Warrant Agent is willing to so act, in connection with
the issuance, registration, transfer, exchange, redemption and exercise of the Warrants; 
 WHEREAS, the Company desires to provide for the
form and provisions of the Warrants, the terms upon which they shall be issued and exercised, and the respective rights, limitation of rights, and immunities of the Company, the Warrant Agent, and the holders of the Warrants; and 

WHEREAS, all acts and things have been done and performed which are necessary to make the Warrants, when executed on behalf of the Company and
countersigned by or on behalf of the Warrant Agent (if a physical certificate is issued), as provided herein, the valid, binding and legal obligations of the Company, and to authorize the execution and delivery of this Agreement. 

NOW, THEREFORE, in consideration of the mutual agreements herein contained, the parties hereto agree as follows: 

 

	1.	 Appointment of Warrant Agent. The Company hereby appoints the Warrant Agent to act as agent for the
Company for the Warrants, and the Warrant Agent hereby accepts such appointment and agrees to perform the same in accordance with the terms and conditions set forth in this Agreement. 

  
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	2.	 Warrants. 

 

	2.1	 Form of Warrant. Each Warrant shall initially be issued in registered form only. 

 

	2.2	 Effect of Countersignature. If a physical certificate is issued, unless and until countersigned by the
Warrant Agent, either by manual or facsimile signature, pursuant to this Agreement, a certificated Warrant shall be invalid and of no effect and may not be exercised by the holder thereof. 

 

	2.3	 Registration. 

 

	 	2.3.1	 Warrant Register. The Warrant Agent shall maintain books (the “Warrant Register”), for
the registration of original issuance and the registration of transfer of the Warrants. Upon the initial issuance of the Warrants, the Warrant Agent shall issue and register the Warrants in the names of the respective holders thereof in such
denominations and otherwise in accordance with instructions delivered to the Warrant Agent by the Company. Ownership of beneficial interests in the Public Warrants shall be shown on, and the transfer of such ownership shall be effected through,
records maintained by institutions that have accounts with The Depository Trust Company (the “Depositary”) (such institution, with respect to a Warrant in its account, a “Participant”). 

If the Depositary subsequently ceases to make its book-entry settlement system available for the Public Warrants, the Company may instruct the
Warrant Agent regarding making other arrangements for book-entry settlement. In the event that the Public Warrants are not eligible for, or it is no longer necessary to have the Public Warrants available in, book-entry form, the Warrant Agent shall
provide written instructions to the Depositary to deliver to the Warrant Agent for cancellation each book-entry Public Warrant, and the Company shall instruct the Warrant Agent to deliver to the Depositary definitive certificates in physical form
evidencing such Warrants (“Definitive Warrant Certificates”) which shall be in the form annexed hereto as Exhibit A. 

Physical certificates, if issued, shall be signed by, or bear the facsimile signature of, the President, Principal Financial Officer, Principal
Accounting Officer, Chief Corporate Development Officer, Chief Legal Officer or Secretary of the Company or other authorized officer of the Company. In the event the person whose facsimile signature has been placed upon any Warrant shall have ceased
to serve in the capacity in which such person signed the Warrant before such Warrant is issued, it may be issued with the same effect as if he or she had not ceased to be such at the date of issuance. 

 

	 	2.3.2	 Registered Holder. Prior to due presentment for registration of transfer of any Warrant, the Company and
the Warrant Agent may deem and treat the person in whose name such Warrant is registered in the Warrant Register (the “Registered  

  
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Holder”) as the absolute owner of such Warrant and of each Warrant represented thereby (notwithstanding any notation of ownership or other writing on any physical certificate made by
anyone other than the Company or the Warrant Agent), for the purpose of any exercise thereof, and for all other purposes, and neither the Company nor the Warrant Agent shall be affected by any notice to the contrary. 

 

	2.4	 Detachability of Warrants. The shares of Common Stock and Public Warrants comprising the Units shall
begin separate trading on the 52nd day following the date of the Prospectus or, if such 52nd day is not on a day, other than a Saturday, Sunday or federal holiday, on which banks in New York City are generally open for normal business (a
“Business Day”), then on the immediately succeeding Business Day following such date, or earlier (the “Detachment Date”) with the consent of Evercore Group L.L.C. and Barclays Capital Inc., but in no event shall the
shares of Common Stock and the Public Warrants comprising the Units be separately traded until (A) the Company has filed a Current Report on Form 8-K with the Commission containing an audited
balance sheet reflecting the receipt by the Company of the gross proceeds of the Offering, including the proceeds then received by the Company from the exercise by the underwriters of their right to purchase additional Units in the Offering (the
“Over-allotment Option”), if the Over-allotment Option is exercised prior to the filing of the Form 8-K, and, (B) if the Detachment Date is earlier than the 52nd day following the
date of the Prospectus, the Company issues a press release announcing when such earlier separate trading shall begin. 

  

	2.5	 Fractional Warrants. The Company shall not issue fractional Warrants other than as part of the Units,
each of which is comprised initially of one share of Series A Common Stock and one-fifth of one Public Warrant. If, upon the detachment of Public Warrants from the Units or otherwise, a holder of Warrants
would be entitled to receive a fractional Warrant, the Company shall round down to the nearest whole number the number of Warrants to be issued to such holder. 

 

	2.6	 Private Placement Warrants. The Private Placement Warrants shall be identical to the Public Warrants,
except that so long as they are held by the Sponsor or any of its Permitted Transferees (as defined below): (i) the Private Placement Warrants may be exercised for cash or on a cashless basis, pursuant to Section 3.3.1(c) hereof and
(ii) the Private Placement Warrants shall not be redeemable by the Company. Unless waived by the Company, the Private Placement Warrants and any shares of Common Stock issuable upon exercise of the Private Placement Warrants may not be
transferred, assigned or sold until thirty (30) days after the completion by the Company of a Partnering Transaction; provided, however, that the Private Placement Warrants and any shares of Common Stock issued upon exercise of
the Private Placement Warrants may be transferred by the holders thereof: 

  

	 	(a)	 to the Company’s officers or directors, Post’s officers or directors, their respective family members
and entities formed by such persons for investment or estate planning purposes which are controlled by such persons or formed for their benefit or for charitable purposes; 

  
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	 	(b)	 to Post or any entity in which Post or the officers and directors of Post hold, in the aggregate, securities
representing no less than 25% of the outstanding voting power of such entity (so long as no other holder or group holds a higher percentage of the voting power of such entity), and the subsidiaries of Post or such entities; 

 

	 	(c)	 to any corporation or other entity which, as a result of any spinoff, splitoff or other distribution
transaction, becomes the beneficial owner of the Private Placement Warrants (and shares issuable upon the exercise of the Private Placement Warrants); or 

  

	 	(d)	 by private sales or transfers made in connection with the consummation of a Partnering Transaction at prices no
greater than the price at which the securities were originally purchased; 

 provided, however, that in the
case of clauses (a) through (d) these permitted transferees (the “Permitted Transferees”) must enter into a written agreement agreeing to be bound by these transfer restrictions and the other restrictions contained in a certain
letter agreement, by and among the Company, the Sponsor and the Company’s executive officers and directors, dated as of the date of this Agreement, as it may be amended from time to time (the “Letter Agreement”). 

In addition, the Sponsor or its Permitted Transferees will be permitted to pledge or grant a security interest in such securities to secure
bona fide indebtedness or engage in hedging transactions; provided, that the holder thereof retains voting control over such securities prior to delivery of shares upon foreclosure or upon satisfaction of the hedge. In the event of any liquidation
prior to the completion of the Company’s Partnering Transaction or the Company’s completion of a liquidation, merger, stock exchange, reorganization or other similar transaction which results in all of the Company’s public
stockholders having the right to exchange their shares of Common Stock for cash, securities or other property subsequent to the Company’s completion of its Partnering Transaction, the lockup period will be deemed terminated. 

 

	2.7	 Forward Purchase Warrants. The Forward Purchase Warrants shall have the same terms and be in the same
form as the Public Warrants. Except as expressly noted herein, Forward Purchase Warrants shall be treated as Public Warrants under this Agreement. 

  

	3.	 Terms and Exercise of Warrants. 

 

	3.1	 Warrant Price. Upon issuance, each Warrant shall entitle the Registered Holder thereof, subject to the
provisions of such Warrant and of this Agreement, to purchase from the Company the number of shares of Series A Common Stock stated therein, at the price of $11.50 per share of Series A Common Stock, and shall be subject to the adjustments provided
in Section 4 hereof and in the last sentence of this Section 3.1. The term “Warrant Price” as used in this Agreement shall initially mean the price per share of Series A Common Stock (including in cash or by
payment of Warrants pursuant to a “cashless exercise,” to the extent permitted hereunder) described in the prior sentence and 

  
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such term shall be subject to adjustment as provided in Section 4. The Company in its sole discretion may lower the Warrant Price at any time prior to the Expiration Date (as defined
below) for a period of not less than twenty (20) Business Days, provided, that the Company shall provide at least three (3) Business Days prior written notice of such reduction to Registered Holders of the Warrants and,
provided further that any such reduction shall be identical among all of the Warrants. 

  

	3.2	 Duration of Warrants. A Warrant may be exercised only during the period (the “Exercise
Period”) (A) commencing on the later of: (i) the date that is thirty (30) days after the first date on which the Company completes a Partnering Transaction, and (ii) the date that is twelve
(12) months from the date of the closing of the Offering, and (B) terminating at the earliest to occur of: (w) 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 Partnering Transaction, (x) the liquidation of the Company in accordance with the Company’s certificate of incorporation, as amended, restated or amended and restated from time to time, if the Company fails to
consummate a Partnering Transaction, and (y) other than with respect to the Private Placement Warrants then held by the Sponsor or its Permitted Transferees, the Redemption Date (as defined below) as provided in Section 6.3
hereof (the “Expiration Date”); provided, however, that the exercise of any Warrant shall be subject to the satisfaction of any applicable conditions, as set forth in Section 3.3.2 below, with respect to an
effective registration statement or a valid exemption therefrom being available. Except with respect to the right to receive the Redemption Price (as defined below) (other than with respect to a Private Placement Warrant then held by the Sponsor or
its Permitted Transferees) in the event of a redemption (as set forth in Section 6 hereof), each Warrant (other than a Private Placement Warrant then held by the Sponsor or its Permitted Transferees in the event of a redemption) not
exercised on or before the Expiration Date shall become null and void, and all rights thereunder and all rights in respect thereof under this Agreement shall cease at 5:00 p.m. New York City time on the Expiration Date. The Company in its sole
discretion may extend the duration of the Warrants by delaying the Expiration Date; provided that the Company shall provide at least twenty (20) days prior written notice of any such extension to Registered Holders of the Warrants
and, provided further that any such extension shall be identical in duration among all the Warrants. 

  

	3.3	 Exercise of Warrants. 

 

	 	3.3.1	 Payment. Subject to the provisions of the Warrant and this Agreement, a Warrant may be exercised by the
Registered Holder thereof by delivering to the Warrant Agent at its corporate trust department (i) the Definitive Warrant Certificate evidencing the Warrants to be exercised, or, in the case of a Warrant represented by a book-entry, the
Warrants to be exercised (the “Book-Entry Warrants”) on the records of the Depositary to an account of the Warrant Agent at the Depositary designated for such purposes in writing by the Warrant Agent to the Depositary from time to
time, (ii) an election to purchase (“Election to Purchase”) any shares of Common Stock pursuant to the exercise of a Warrant, properly completed and executed by the Registered Holder on the reverse of the Definitive Warrant
Certificate or, in the case of a Book-Entry Warrant, properly delivered by the Participant in accordance with the Depositary’s procedures, and (iii) the payment 

  
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in full of the aggregate Warrant Price for all shares of Common Stock as to which the Warrant is exercised and any and all applicable taxes due in connection with the exercise of the Warrant, the
exchange of the Warrant for the shares of Common Stock and the issuance of such shares of Common Stock, as follows: 

  

	 	(a)	 in lawful money of the United States, in good certified check or wire payable to the Warrant Agent;

  

	 	(b)	 in the event of a redemption pursuant to Section 6.1 hereof in which the
Company’s board of directors (the “Board”) has elected to require all holders of the Warrants to exercise such Warrants on a “cashless basis,” by surrendering the Warrants for that number of shares of Series A Common
Stock equal to the lesser of (A) the quotient obtained by dividing (x) the product of the number of shares of Series A Common Stock underlying the Warrants, multiplied by the excess of the “Fair Market Value” (as defined in this
Section 3.3.1(b)) over the Warrant Price by (y) the Fair Market Value and (B) the product of 0.361 and the number of shares of Series A Common Stock underlying the Warrants. Solely for purposes of this
Section 3.3.1(b), Section 6.2 and Section 6.4, the “Fair Market Value” shall mean the volume weighted average price of the applicable series of Common
Stock for the ten (10) trading days immediately following the date on which the notice of redemption is sent to the holders of the Warrants, pursuant to Section 6 hereof; 

 

	 	(c)	 with respect to any Private Placement Warrant so long as such Private Placement Warrant is held by the Sponsor
or a Permitted Transferee, by surrendering the Warrants for that number of shares of Series A Common Stock equal to the quotient obtained by dividing (x) the product of the number of shares of Series A Common Stock underlying the Warrants,
multiplied by the excess of the “Sponsor Fair Market Value” (as defined in this Section 3.3.1(c)) over the Warrant Price, by (y) the Sponsor Fair Market Value. Solely for purposes of this
Section 3.3.1(c), the “Sponsor Fair Market Value” shall mean the average last reported sale price of the applicable series of Common Stock for the ten (10) trading days ending on the third trading day
prior to the date on which notice of exercise of the Warrant is sent to the Warrant Agent; 

  

	 	(d)	 as provided in Section 6.2 with respect to a Make-Whole Exercise; or

  

	 	(e)	 as provided in Section 7.4 hereof; 

provided, however, that this Section 3 shall be adjusted pursuant to
Section 4.1.1(b) following any event described in Section 4.1.1(b) pursuant to which the Warrants become exercisable for shares of Series C Common Stock in addition to shares of Series A Common
Stock, including to provide that exercise of the Warrants on a “cashless basis” would be net of the proportionate number of shares of both Series A Common Stock and Series C Common Stock issuable upon exercise of the Warrants. The Warrant
Agent shall forward funds received for warrant exercises as promptly as practicable after receipt thereof and in any event not later than by the 5th business day of the following month by wire transfer to an account designated by the Company. 

  
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	 	3.3.2	 Issuance of Shares of Common Stock on Exercise. As soon as practicable after the exercise of any Warrant
and the clearance of the funds in payment of the Warrant Price (if payment is pursuant to Section 3.3.1(a)), the Company shall issue to the Registered Holder of such Warrant a book-entry position or certificate, as
applicable, for the number of full shares of Common Stock to which he, she or it is entitled, registered in such name or names as may be directed by him, her or it, and if such Warrant shall not have been exercised in full, a new book-entry position
or countersigned Warrant, as applicable, for the number of shares of Common Stock as to which such Warrant shall not have been exercised. Notwithstanding the foregoing, the Company shall not be obligated to deliver any shares of Common Stock
pursuant to the exercise of a Warrant and shall have no obligation to settle such Warrant exercise unless a (a) registration statement under the Securities Act with respect to the shares of Common Stock underlying the Public Warrants is then
effective and (b) prospectus relating thereto is current, subject to the Company satisfying its obligations under Section 7.4. No Warrant shall be exercisable for cash or on a cashless basis and the Company shall not
be obligated to issue shares of Common Stock to holders seeking to exercise Warrants unless the shares of Common Stock issuable upon such Warrant exercise have been registered, qualified or deemed to be exempt from registration or qualification
under the securities laws of the state of residence of the Registered Holder of the Warrants. Subject to Section 4.7 of this Agreement, a Registered Holder of Public Warrants may exercise its Public Warrants only for a
whole number of shares of Common Stock. In no event will the Company be required to net cash settle the Warrant exercise. The Company may require holders of Public Warrants to settle the Warrant on a “cashless basis” pursuant to
Section 7.4. If, by reason of any exercise of Warrants on a “cashless basis,” the holder of any Warrants would be entitled, upon the exercise of such Warrants, to receive a fractional interest in a share of Common
Stock, the Company shall round down to the nearest whole number, the number of shares of Common Stock to be issued to such holder. 

  

	 	3.3.3	 Valid Issuance. All shares of Common Stock issued upon the proper exercise of a Warrant in conformity
with this Agreement shall be validly issued, fully paid and non-assessable. 

  

	 	3.3.4	 Date of Issuance. Each person in whose name any book-entry position or certificate, as applicable, for
shares of Common Stock is issued shall for all purposes be deemed to have become the holder of record of such shares of Common Stock on the date on which the Warrant, or book-entry position representing such Warrant, was surrendered and payment of
the Warrant Price was made, irrespective of the date of delivery of such certificate in the case of a certificated Warrant, except that, if the date of such surrender and payment is a date when the share transfer books of the Company or book-entry
system of the Warrant Agent are closed, such person shall be deemed to have become the holder of such shares of Common Stock at the close of business on the next succeeding date on which the share transfer books or book-entry system are open.

  
 8 

	 	3.3.5	 Maximum Percentage. A holder of a Warrant may notify the Company in writing in the event it elects to be
subject to the provisions contained in this Section 3.3.5; however, no holder of a Warrant shall be subject to this Section 3.3.5 unless he, she or it makes such election. If the election is
made by a holder, such holder shall not have the right to exercise such Warrant to the extent that after giving effect to such exercise such person (together with such person’s affiliates), to the Warrant Agent’s actual knowledge, would
beneficially own in excess of 9.8% or such other amount as the holder may specify (the “Maximum Percentage”) of the shares of any series of Common Stock outstanding immediately after giving effect to such exercise. For purposes of
the foregoing sentence, the aggregate number of shares of any series of Common Stock beneficially owned by such person and its affiliates shall include the number of shares of such series of Common Stock issuable upon exercise of the Warrant with
respect to which the determination of such sentence is being made, but shall exclude shares of such series of Common Stock that would be issuable upon (x) exercise of the remaining, unexercised portion of the Warrant beneficially owned by such
person and its affiliates and (y) exercise or conversion of the unexercised or unconverted portion of any other securities of the Company beneficially owned by such person and its affiliates (including, without limitation, any convertible notes
or convertible preferred stock or warrants) subject to a limitation on conversion or exercise analogous to the limitation contained herein. Except as set forth in the preceding sentence, for purposes of this paragraph, beneficial ownership shall be
calculated in accordance with Section 13(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). For purposes of the Warrant, in determining the number of outstanding shares of any series of Common Stock,
the holder may rely on the number of outstanding shares of such series of Common Stock as reflected in (1) the Company’s most recent Annual Report on Form 10-K, Quarterly Report on Form 10-Q, Current Report on Form 8-K or other public filing with the Commission, as the case may be, (2) a more recent public announcement by the Company or (3) any
other notice by the Company or the Company’s transfer agent setting forth the number of shares of such series of Common Stock outstanding. For any reason at any time, upon the written request of the holder of a Warrant who has made an election
under this Section 3.3.5, the Company shall, within two (2) Business Days confirm orally and in writing to such holder the number of shares of any series of Common Stock then outstanding. In any case, the number of
outstanding shares of any series of Common Stock shall be determined after giving effect to the conversion or exercise of equity securities of the Company by the holder and its affiliates since the date as of which such number of outstanding shares
of such series of Common Stock was reported. By written notice to the Company, the holder of a Warrant may from time to time increase or decrease the Maximum Percentage applicable to such holder to any other percentage specified in such notice;
provided, however, that any such increase shall not be effective until the sixty-first (61st) day after such notice is delivered to the Company. 

  
 9 

	4.	 Adjustments. 

 

	4.1	 Stock Dividends. 

 

	 	4.1.1	 Stock Splits and Distributions. 

 

	 	(a)	 If after the date hereof, the number of outstanding shares of Series A Common Stock is increased by a stock
dividend or share distribution to holders of Series A Common Stock payable in shares of Series A Common Stock, or by a stock split of shares of Series A Common Stock or other similar event, then, on the effective date of such stock dividend, stock
split or similar event, the number of shares of Series A Common Stock issuable on exercise of each Warrant will be increased in proportion to such increase in the outstanding shares of Series A Common Stock. 

 

	 	(b)	 If after the date hereof, a stock dividend or other share distribution is made to the holders of Series A
Common Stock consisting of shares of Series C Common Stock, then the terms of the Warrant will be adjusted so that, upon exercise thereof the holder will be entitled to receive, in addition to the shares of Series A Common Stock such holder is
otherwise entitled, such number of shares of Series C Common Stock which such holder would have received had such holder exercised the Warrant in full immediately prior to the record date for such stock dividend or share distribution and held the
applicable number of shares of Series A Common Stock at the time of record date for such stock dividend or share distribution. For the avoidance of doubt, in such event, each Warrant shall become exercisable for a basket of shares consisting of the
same number of shares of Series A Common Stock prior to such dividend or distribution together with the number of whole or fractional shares of Series C Common Stock such holder would have been entitled to receive if it had exercised such warrant
immediately prior to the record date for such dividend or distribution and the Warrant Price will not be adjusted as a result of such dividend or distribution. Immediately following any event described in this
Section 4.1.1(b) pursuant to which the Warrants become exercisable for shares of Series C Common Stock in addition to Series A Common Stock, the terms and provisions of this Agreement, including, without limitation,
Sections 3.1, 3.3, 4.1, 4.2, 4.3, 4.4, 4.5, 6 and 7.4, and the Definitive Warrant Certificates and the form of Election to Purchase contained therein shall be adjusted by the Company to
provide for the shares of Series C Common Stock issuable upon exercise of the Warrants and to effectuate the intent and purpose of this Section 4.1.1(b). 

 

	 	4.1.2	 Series A Rights Offering. If after the date hereof, the Company effects a rights offering (including,
without limitation, by distribution of stock purchase rights, warrants or options (collectively, “Rights”)) to all holders of shares of Series A Common Stock entitling holders to purchase shares of Series A Common Stock at a price
per share less than the “Rights Offering Fair Market Value” (as defined 

  
 10 

	 	
below), and at the time of such Rights offering (or distribution of Rights) each Warrant is exercisable only for Series A Common Stock, then the number of shares of Series A Common Stock issuable
on exercise of each Warrant (the “Warrant Share Number”) shall be increased as of immediately after the open of business on the “Ex-Dividend Date” (as defined below) based on the
following formula: 

  
  

									
		  	WS’	  	= WS0 x	  	OS0 + X	  	
		  	OS0 + Y	  	

 where, 

WS0 = the Warrant Share Number in effect immediately prior to the open
of business on the Ex-Dividend Date for such Rights offering; 
 WS’ = the
Warrant Share Number in effect immediately after the open of business on such Ex-Dividend Date; 

OS0 = the number of shares of Series A Common Stock outstanding
immediately prior to the open of business on such Ex-Dividend Date; 
 X = the total
number of shares of Series A Common Stock issuable pursuant to such Rights that are distributed to holders of Series A Common Stock; and 

Y = the number equal to the aggregate price payable to exercise in full such Rights that are distributed to holders of shares
of Series A Common Stock divided by the Rights Offering Fair Market Value. 
 Such adjustment to Warrant Share Number shall be made
immediately after the opening of business on the Ex-Dividend Date for such distribution. To the extent that shares of Series A Common Stock are not delivered after the expiration of such Rights, the Warrant
Share Number may be readjusted (in the sole discretion of the Board) to the Warrant Share Number that would then be in effect had the adjustment made upon the distribution of such Rights been made on the basis of delivery of only the number of
shares of Series A Common Stock actually delivered pursuant to the Rights. 
 For purposes of this Section 4.1.2,
(i) if the Rights offering is for securities convertible into or exercisable for shares of Series A Common Stock, in determining the price payable for shares of Series A Common Stock, there shall be taken into account any consideration received for
such Rights, as well as any additional amount payable upon exercise or conversion, (ii) “Rights Offering Fair Market Value” means the volume weighted average price per share of the Series A Common Stock as reported during the ten
(10) trading day period ending on, and including, the last trading day prior to the Ex-Dividend Date, and (iii) “Ex-Dividend Date” means the first
date on which the shares of Series A Common Stock trade on the applicable exchange or in the applicable market, regular way, without the right to receive such Rights. 

  
 11 

	 	4.1.3	 Other Rights Offering. If after the date hereof, the Company effects a Rights offering (including,
without limitation, by distribution of Rights) (other than a Rights offering described in Section 4.1.2) to all holders of shares of Common Stock entitling holders to purchase shares of the Company’s common stock at a
price per share less than the “Other Rights Offering Fair Market Value” (as defined below) applicable thereto, then the Company will cause to be delivered (immediately following the date such Rights are distributed to the holders of Common
Stock) to each holder of Warrants the number and type of Rights such holder would have been entitled to receive had it exercised such Warrant immediately prior to the record date for such Rights distribution and been the holder of the number of
shares and series of Common Stock deliverable upon exercise of a Warrant on such record date. The Rights so delivered to such holder are referred to as the “Pass-Through Securities.” The delivery of Pass-Through Securities to the
holders of Warrants as provided herein will be the sole adjustment required in connection with any such Rights offering. 

For purposes of this Section 4.1.3, (i) if the Rights offering is for securities convertible into or exercisable for
shares of Common Stock, in determining the price payable for shares of Common Stock, there shall be taken into account any consideration received by the Company for such Rights, as well as any additional amount payable upon exercise or conversion,
(ii) “Other Rights Offering Fair Market Value” means the volume weighted average price of the applicable series of the Company’s common stock as reported on a national securities exchange during the ten (10) trading day
period ending on the last trading day prior to the Ex-Dividend Date, and (iii) “Ex-Dividend Date” means the first date on which the shares of the
applicable series of Common Stock trade on the applicable exchange or in the applicable market, regular way, without the right to receive such Rights. 
  

	 	4.1.4	 Extraordinary Dividends. If the Company, at any time while the Warrants are outstanding and unexpired,
shall pay a dividend or make a distribution in cash, securities or other assets to the holders of the shares of Common Stock on account of such shares of Common Stock, other than (a) as described in Sections 4.1.1, 4.1.2 or 4.1.3 above,
(b) Ordinary Cash Dividends (as defined below), (c) to satisfy the redemption rights of the holders of the shares of Common Stock in connection with a proposed Partnering Transaction, (d) to satisfy the redemption rights of the holders of
the shares of Common Stock in connection with a stockholder vote to amend the Company’s amended and restated certificate of incorporation (i) to modify the substance or timing of the Company’s obligation to allow redemptions in
connection with its Partnering Transaction or to redeem 100% of the Company’s public shares of Series A Common Stock if the Company does not complete its Partnering Transaction within the time period set forth therein or (ii) with respect
to any other provision relating to the Company’s stockholders’ rights or pre-Partnering Transaction activity, or (e) in connection with the redemption of public shares upon the failure of the
Company to complete its Partnering Transaction and any subsequent distribution of its assets upon its liquidation (any such non-excluded event being referred to herein as an “Extraordinary
Dividend”), then the Warrant Price shall be decreased, effective immediately after the effective date of 

  
 12 

	 	
such Extraordinary Dividend, by the amount of cash and/or the fair market value (as determined by the Board, in good faith) of any securities or other assets paid on each share of Common Stock in
respect of such Extraordinary Dividend. For purposes of this Section 4.1.4, “Ordinary Cash Dividends” means any cash dividend or cash distribution which, when combined on a per share basis with the per
share amounts of all other cash dividends and cash distributions paid on the shares of Common Stock during the 365-day period ending on the date of declaration of such dividend or distribution, does not exceed
$0.50 (as adjusted to appropriately reflect any of the events referred to in this Section 4 and excluding cash dividends or cash distributions that resulted in an adjustment to the Warrant Price or to the number of shares
of Common Stock issuable on exercise of each Warrant). 

  

	4.2	 Aggregation of Shares. If after the date hereof, the number of outstanding shares of a series of Common
Stock is decreased by a consolidation, combination, reverse stock split or reclassification of shares of such series of Common Stock or other similar event, then, on the effective date of such consolidation, combination, reverse stock split,
reclassification or similar event, the number of shares of such series of Common Stock issuable on exercise of each Warrant shall be decreased in proportion to such decrease in outstanding shares of such series of Common Stock.

  

	4.3	 Adjustments in Exercise Price. Except as described in Section 4.1.1(b), whenever the number
of shares of Common Stock purchasable upon the exercise of the Warrants is adjusted, the Warrant Price shall be adjusted (to the nearest cent) by multiplying such Warrant Price immediately prior to such adjustment by a fraction (x) the
numerator of which shall be the number of shares of Common Stock purchasable upon the exercise of the Warrants immediately prior to such adjustment, and (y) the denominator of which shall be the number of shares of Common Stock so
purchasable immediately thereafter. 

  

	4.4	 Raising of Capital in Connection with the Partnering Transaction. If (x) the Company issues
additional shares of Series A Common Stock or equity-linked securities convertible, exercisable or exchangeable for Series A Common Stock, excluding forward purchase units, for capital raising purposes in connection with the closing of its
Partnering Transaction at an issue price or effective issue price of less than $9.20 per share of Series A Common Stock (with such issue price or effective issue price to be determined in good faith by the Board and, in the case of any such issuance
to the Sponsor or its affiliates, without taking into account any shares of Series F common stock, par value $0.0001 per share, of the Company, or Series B Common Stock held by the Sponsor or such affiliates, as applicable, prior to such issuance)
(the “Newly Issued Price”), (y) the aggregate gross proceeds from such issuances represent more than 60% of the total equity proceeds, and interest thereon, available for the funding of the Company’s Partnering Transaction on
the date of the completion of the Company’s Partnering Transaction (net of redemptions), and (z) the volume-weighted average trading price of shares of Series A Common Stock during the twenty (20) trading day period
starting on the trading day prior to the day on which the Company consummates its Partnering Transaction (such price, the “Market Value”) is below $9.20 per share, the Warrant Price shall be adjusted (to the nearest cent) to be
equal to 115% of the higher of the Market Value and the Newly Issued Price, and the $18.00 per share redemption trigger price described in Section 6.1 shall be adjusted (to the nearest cent) to be equal to 180% of the higher of the
Market Value and the Newly Issued Price. 

  
 13 

	4.5	 Replacement of Securities upon Reorganization, etc. In case of any reclassification or reorganization of the
outstanding shares of Common Stock (other than a change under Section 4.1 or Section 4.2 hereof or that solely affects the par value of such shares of Common Stock), or in the case of any merger or consolidation of
the Company with or into another corporation (other than a merger or consolidation in which the Company is the continuing corporation and that does not result in any reclassification or reorganization of the outstanding shares of Common Stock), or
in the case of any sale or conveyance to another corporation or entity of the assets or other property of the Company as an entirety or substantially as an entirety in connection with which the Company is dissolved, the holders of the Warrants shall
thereafter have the right to purchase and receive, upon the basis and upon the terms and conditions specified in the Warrants and in lieu of the shares of Common Stock of the Company immediately theretofore purchasable and receivable upon the
exercise of the rights represented thereby, the kind and amount of shares of stock or other securities or property (including cash without interest) receivable upon such reclassification, reorganization, merger or consolidation, or upon a
dissolution following any such sale or transfer, that the holder of the Warrants would have received if such holder had exercised his, her or its Warrant(s) immediately prior to such event (the “Alternative Issuance”);
provided, however, that (i) if the holders of the shares of Common Stock were entitled to exercise a right of election as to the kind or amount of securities, cash or other assets receivable upon such merger or
consolidation, then the kind and amount of securities, cash or other assets constituting the Alternative Issuance for which each Warrant shall become exercisable shall be deemed to be the weighted average of the kind and amount received per share by
the holders of the shares of Common Stock in such merger or consolidation that affirmatively make such election, and (ii) if a tender, exchange or redemption offer shall have been made to and accepted by the holders of the shares of
Common Stock (other than a tender, exchange or redemption offer made by the Company in connection with redemption rights held by stockholders of the Company as provided for in the Company’s amended and restated certificate of incorporation or
as a result of the repurchase of shares of Common Stock by the Company if a proposed Partnering Transaction is presented to the stockholders of the Company for approval) under circumstances in which, upon completion of such tender or exchange offer,
the maker thereof, together with members of any group (within the meaning of Rule 13d-5(b)(1) under the Exchange Act (or any successor rule)) of which such maker is a part, and together with any affiliate or
associate of such maker (within the meaning of Rule 12b-2 under the Exchange Act (or any successor rule)) and any members of any such group of which any such affiliate or associate is a part, own beneficially
(within the meaning of Rule 13d-3 under the Exchange Act (or any successor rule)) more than 50% of the outstanding shares of Common Stock, the holder of a Warrant shall be entitled to receive as the
Alternative Issuance, the highest amount of cash, securities or other property to which such holder would actually have been entitled as a stockholder if such Warrant holder had exercised the Warrant prior to the expiration of such tender or
exchange offer, accepted such offer and all of the shares of Common Stock held by such holder had been purchased pursuant to such tender or exchange offer, subject to adjustments (from and after the consummation of such tender or exchange offer) as
nearly equivalent as possible to the adjustments 

  
 14 

	 	
provided for in this Section 4; provided, further, that if less than 70% of the consideration receivable by the holders of the shares of Common Stock in the applicable
event is payable in the form of common stock in the successor entity that is listed for trading on a national securities exchange or is quoted in an established
over-the-counter market, or is to be so listed for trading or quoted immediately following such event, and if the Registered Holder properly exercises the Warrant within
thirty (30) days following the public disclosure of the consummation of such applicable event by the Company pursuant to a Current Report on Form 8-K filed with the Commission, the Warrant Price
shall be reduced by an amount (in dollars) equal to the difference of (i) the Warrant Price in effect prior to such reduction minus (ii) (A) the Per Share Consideration (as defined below) (but in no event less than zero)
minus (B) the Black-Scholes Warrant Value (as defined below). The “Black-Scholes Warrant Value” means the value of a Warrant immediately prior to the consummation of the applicable event based on the Black-Scholes
Warrant Model for a Capped American Call on Bloomberg Financial Markets (“Bloomberg”). For purposes of calculating such amount, (1) Section 6 of this Agreement shall be taken into account, (2) the
price of each series of Common Stock shall be the volume weighted average price of such series of Common Stock as reported during the ten (10) trading day period ending on the trading day prior to the effective date of the applicable
event, (3) the assumed volatility shall be the 90 day volatility obtained from the HVT function on Bloomberg determined as of the trading day immediately prior to the day of the announcement of the applicable event, and
(4) the assumed risk-free interest rate shall correspond to the United States Treasury rate for a period equal to the remaining term of the Warrant. “Per Share Consideration” means initially (subject to adjustment
pursuant to Section 4) (i) if the consideration paid to holders of the shares of Series A Common Stock consists exclusively of cash, the amount of such cash per share of Series A Common Stock, and (ii) in all other cases, the
volume weighted average price of the Series A Common Stock as reported during the ten (10) trading day period ending on the trading day prior to the effective date of the applicable event. If any reclassification or reorganization also results
in a change in shares of Series A Common Stock covered by Section 4.1.1 (including, if applicable, to provide for any Series C Common Stock issuable upon exercise of this Warrant), then such adjustment shall be made pursuant to
Section 4.1.1 or Sections 4.2, 4.3, 4.4 and this Section 4.5. The provisions of this Section 4.5 shall similarly apply to successive reclassifications, reorganizations, mergers or
consolidations, sales or other transfers. In no event shall the Warrant Price be reduced to less than the par value per share issuable upon exercise of such Warrant. 

 

	4.6	 Notices of Changes in Warrant. Upon every adjustment of the Warrant Price or the number of shares or
series of Common Stock issuable upon exercise of a Warrant, the Company shall give written notice thereof to the Warrant Agent, which notice shall state the Warrant Price resulting from such adjustment and the adjustment, if any, in the number of
shares or series of Common Stock purchasable at such price upon the exercise of a Warrant, setting forth in reasonable detail the method of calculation and the facts upon which such calculation is based. Upon the occurrence of any event specified in
Sections 4.1, 4.2, 4.3, 4.4 or 4.5, the Company shall give written notice of the occurrence of such event to each holder of a Warrant, at the last address set forth for such holder in the Warrant Register, of the
record date or the effective date of the event. Failure to give such notice, or any defect therein, shall not affect the legality or validity of such event. 

  
 15 

	4.7	 No Fractional Shares. Notwithstanding any provision contained in this Agreement to the contrary, the
Company shall not issue fractional shares of Common Stock upon the exercise of Warrants. If, by reason of any adjustment made pursuant to this Section 4, the holder of any Warrants would be entitled, upon the exercise of such Warrants,
to receive a fractional interest in a share, the Company shall, upon such exercise, round down to the nearest whole number the number of shares of Common Stock to be issued to such holder. 

 

	4.8	 Form of Warrant. The form of Warrant need not be changed because of any adjustment pursuant to this
Section 4, and Warrants issued after such adjustment may state the same Warrant Price and the same number of shares of Common Stock as is stated in the Warrants initially issued pursuant to this Agreement; provided,
however, that the Company may at any time in its sole discretion make any change in the form of Warrant that the Company may deem appropriate and that does not affect the substance thereof, and any Warrant thereafter issued or countersigned,
whether in exchange or substitution for an outstanding Warrant or otherwise, may be in the form as so changed. 

  

	5.	 Transfer and Exchange of Warrants. 

 

	5.1	 Registration of Transfer. The Warrant Agent shall register the transfer, from time to time, of any
outstanding Warrant upon the Warrant Register, upon surrender of such Warrant for transfer, properly endorsed with signatures properly guaranteed and accompanied by appropriate instructions for transfer. Upon any such transfer, a new Warrant
representing an equal aggregate number of Warrants shall be issued and the old Warrant shall be cancelled by the Warrant Agent. In the case of certificated Warrants, the Warrants so cancelled shall be delivered by the Warrant Agent to the Company
from time to time upon request. 

  

	5.2	 Procedure for Surrender of Warrants. Warrants may be surrendered to the Warrant Agent, together with a
written request for exchange or transfer reasonably acceptable to the Warrant Agent, duly executed by the registered holder thereof, or by a duly authorized 

  
 16 

	 	
attorney, and thereupon the Warrant Agent shall issue in exchange therefor one or more new Warrants as requested by the Registered Holder of the Warrants so surrendered, representing an equal
aggregate number of Warrants; provided, however, that except as otherwise provided herein or with respect to any Book-Entry Warrant, each Book-Entry Warrant may be transferred only in whole and only to the Depositary, to another
nominee of the Depositary, to a successor depository, or to a nominee of a successor depository; provided further, however, that in the event that a Warrant surrendered for transfer bears a restrictive legend (as in the case of the
Private Placement Warrants), the Warrant Agent shall not cancel such Warrant and issue new Warrants in exchange thereof until the Warrant Agent has received an opinion of counsel for the Company stating that such transfer may be made and indicating
whether the new Warrants must also bear a restrictive legend. 

  

	5.3	 Fractional Warrants. The Warrant Agent shall not be required to effect any registration of transfer or
exchange which shall result in the issuance of a warrant certificate or book-entry position for a fraction of a warrant, except as part of the Units. 

  

	5.4	 Service Charges. No service charge shall be made for any exchange or registration of transfer of
Warrants except for any tax or other third-party charges imposed in connection therewith. 

  

	5.5	 Warrant Execution and Countersignature. The Warrant Agent is hereby authorized to countersign and to
deliver, in accordance with the terms of this Agreement, the Warrants required to be issued pursuant to the provisions of this Section 5, and the Company, whenever required by the Warrant Agent, shall supply the Warrant Agent with
Warrants duly executed on behalf of the Company for such purpose. 

  

	5.6	 Transfer of Warrants. Prior to the Detachment Date, the Public Warrants may be transferred or exchanged
only together with the Unit in which such Warrant is included, and only for the purpose of effecting, or in conjunction with, a transfer or exchange of such Unit. Furthermore, each transfer of a Unit on the register relating to such Units shall
operate also to transfer the Warrants included in such Unit. Notwithstanding the foregoing, the provisions of this Section 5.6 shall have no effect on any transfer of Warrants on and after the Detachment Date. 

 

	6.	 Redemption. 

 

	6.1	 Redemption of Warrants when the price per share of Series A Common Stock equals or exceeds $18.00.
Subject to Sections 6.5 and 6.6 hereof, not less than all of the outstanding Warrants may be redeemed, at the option of the Company, at any time while they are exercisable and prior to their expiration, at the office(s) of the Warrant
Agent, upon notice to the Registered Holders of the Warrants, as described in Section 6.3 below, at the price (the “Redemption Price”) of $0.01 per Warrant, provided that (i) the last sales price of the
Series A Common Stock reported has been at least $18.00 per share (such Common Stock and its price subject to adjustment in compliance with Section 4 hereof) on each of twenty (20) trading days, within the thirty (30) trading-day period ending on the third trading day prior to the date on which notice of the redemption is given and (ii) there is an effective registration statement covering the shares of Common
Stock issuable upon exercise of the 

  
 17 

	 	
Warrants, and a current prospectus relating thereto, available throughout the 30-day Redemption Period (as defined in Section 6.3 below) or the
Company has elected to require the exercise of the Warrants on a “cashless basis” pursuant to Section 3.3.1. In connection with any redemption pursuant to this Section 6.1, the Company shall provide notice to the
Registered Holders of the Fair Market Value no later than one (1) Business Day after the end of the ten (10) trading day period described in the definition of Fair Market Value in Section 3.3.1(b).

  

	6.2	 [Reserved]. 

 

	6.3	 Date Fixed for, and Notice of, Redemption. In the event that the Company elects to redeem all of the
Warrants pursuant to Section 6.1 or 6.2, the Company shall fix a date for the redemption (the “Redemption Date”). Notice of redemption shall be mailed by first class mail, postage prepaid, by the Company not less than
thirty (30) days prior to the Redemption Date (such 30-day period, the “Redemption Period”) to the Registered Holders of the Warrants to be redeemed at their last addresses as they
shall appear on the registration books. Any notice mailed in the manner herein provided shall be conclusively presumed to have been duly given whether or not the Registered Holder received such notice. 

 

	6.4	 Exercise After Notice of Redemption. The Warrants may be exercised, for cash (or on a “cashless
basis” in accordance with Section 3.3.1(b) or 6.2 of this Agreement) at any time after notice of redemption shall have been given by the Company pursuant to Section 6.3 hereof and prior to the Redemption Date. In
the event that the Company determines to require all holders of Warrants to exercise their Warrants on a “cashless basis” pursuant to Section 3.3.1, the notice of redemption shall contain the information necessary to calculate
the number of shares of Common Stock to be received upon exercise of the Warrants, and the Company shall provide the Registered Holders with the Fair Market Value no later than one (1) Business Day after the end of the ten
(10) trading day period described in the definition of Fair Market Value in Section 3.3.1(b). On and after the Redemption Date, the record holder of the Warrants shall have no further rights except to receive, upon surrender
of the Warrants, the Redemption Price. 

  

	6.5	 Exclusion of Private Placement Warrants. The Company agrees that the redemption rights provided in
Section 6.1 and Section 6.2 shall not apply to the Private Placement Warrants if at the time of the redemption such Private Placement Warrants continue to be held by the initial holder thereof or its Permitted Transferees.
Private Placement Warrants that are transferred to persons other than Permitted Transferees shall upon such transfer cease to be Private Placement Warrants and shall become Public Warrants under this Agreement and shall be subject to redemption on
the same basis and subject to the same terms and conditions as Public Warrants. 

  

	6.6	 Public Warrants Held By the Company’s Officers or Directors. The Company agrees that if Public
Warrants or Forward Purchase Warrants are held by any of the Company’s officers or directors, the Public Warrants and Forward Purchase Warrants held by such officers and directors will be subject to the redemption rights provided in
Section 6.2, except that such officers and directors shall only receive “Fair Market Value” (“Fair Market Value” in this Section 6.6 shall mean the last reported sale price of the Public Warrants on the
applicable Redemption Date) for such Public Warrants and Forward Purchase Warrants so redeemed. 

  
 18 

	7.	 Other Provisions Relating to Rights of Holders of Warrants. 

 

	7.1	 No Rights as Stockholder. Except as set forth in Section 4.1.3, a Warrant does not entitle
the Registered Holder thereof to any of the rights of a stockholder of the Company, including, without limitation, the right to receive dividends, or other distributions, exercise any preemptive rights to vote or to consent or to receive notice as
stockholders in respect of the meetings of stockholders or the election of directors of the Company or any other matter. 

  

	7.2	 Lost, Stolen, Mutilated, or Destroyed Warrants. If any Warrant is lost, stolen, mutilated, or destroyed,
the Company and the Warrant Agent may on such terms as to indemnity or otherwise as they may in their discretion impose (which shall, in the case of a mutilated Warrant, include the surrender thereof), issue a new Warrant of like denomination,
tenor, and date as the Warrant so lost, stolen, mutilated, or destroyed. Any such new Warrant shall constitute a substitute contractual obligation of the Company, whether or not the allegedly lost, stolen, mutilated, or destroyed Warrant shall be at
any time enforceable by anyone. 

  

	7.3	 Reservation of Shares of Common Stock. The Company shall at all times reserve and keep available a
number of its authorized but unissued shares of Common Stock that shall be sufficient to permit the exercise in full of all outstanding Warrants issued pursuant to this Agreement. 

 

	7.4	 Registration of Shares of Common Stock; Cashless Exercise at Company’s Option.

  

	 	7.4.1	 Registration of Shares of Common Stock. The Company agrees that as soon as practicable, but in no event
later than twenty (20) Business Days after the closing of its Partnering Transaction, it shall use its commercially reasonable efforts to file with the Commission a registration statement for the registration, under the Securities Act of the
shares of Common Stock issuable upon exercise of the Warrants. The Company shall use its commercially reasonable efforts to cause the same to become effective within sixty (60) Business Days after the closing of its Partnering Transaction and
to maintain the effectiveness of such registration statement, and a current prospectus relating thereto, until the expiration or redemption of the Warrants in accordance with the provisions of this Agreement. If any such registration statement has
not been declared effective by the sixtieth (60th) Business Day following the closing of the Partnering Transaction, holders of the Warrants shall have the right, during the period beginning on
the sixty-first (61st) Business Day after the closing of the Partnering Transaction and ending upon such registration statement being declared effective by the Commission, and during any other
period when the Company shall fail to have maintained an effective registration statement covering the issuance of the shares of Common Stock issuable upon exercise of the Warrants, to exercise such Warrants on a “cashless

  
 19 

	 	
basis,” by exchanging the Warrants (in accordance with Section 3(a)(9) of the Securities Act (or any successor statute) or another exemption) initially (subject to adjustment pursuant
to Section 4) for that number of shares of Series A Common Stock equal to the lesser of (A) the quotient obtained by dividing (x) the product of the number of shares of Series A Common Stock underlying the
Warrants, multiplied by the excess of the “Fair Market Value” (as defined below) over the Warrant Price by (y) the Fair Market Value and (B) the product of 0.361 and the number of shares of Series A Common Stock underlying the
Warrants. Solely for purposes of this Section 7.4.1, “Fair Market Value” shall mean the volume weighted average price of the applicable series of Common Stock as reported during the ten (10) trading
day period ending on the trading day prior to the date that notice of exercise is received by the Warrant Agent from the holder of such Warrants or its securities broker or intermediary. The date that notice of “cashless exercise” is
received by the Warrant Agent shall be conclusively determined by the Warrant Agent. In connection with the “cashless exercise” of a Public Warrant, the Company shall, upon request, provide the Warrant Agent with an opinion of counsel for
the Company (which shall be an outside law firm with securities law experience) stating that (i) the exercise of the Warrants on a “cashless basis” in accordance with this Section 7.4.1 is not required to be
registered under the Securities Act and (ii) the shares of Common Stock issued upon such exercise shall be freely tradable under United States federal securities laws by anyone who is not an affiliate (as such term is defined in Rule 144 under
the Securities Act (or any successor rule)) of the Company and, accordingly, shall not be required to bear a restrictive legend. Except as provided in Section 7.4.2, for the avoidance of doubt, unless and until all of the
Warrants have been exercised or have expired, the Company shall continue to be obligated to comply with its registration obligations under the first three sentences of this Section 7.4.1. 

 

	 	7.4.2	 Cashless Exercise at Company’s Option. If Common Stock is at the time of any exercise of a Warrant
not listed on a national securities exchange such that it satisfies the definition of a “covered security” under Section 18(b)(1) of the Securities Act (or any successor statute), the Company may, at its option, (i) require
holders of Public Warrants who exercise Public Warrants to exercise such Public Warrants on a “cashless basis” in accordance with Section 3(a)(9) of the Securities Act (or any successor statute) as described in
Section 7.4.1 and (ii) in the event the Company so elects, the Company shall (x) not be required to file or maintain in effect a registration statement for the registration, under the Securities Act, of the shares
of Common Stock issuable upon exercise of the Warrants, notwithstanding anything in this Agreement to the contrary, and (y) use its commercially reasonable efforts to register or qualify for sale the shares of Common Stock issuable upon
exercise of the Public Warrant under applicable blue sky laws to the extent an exemption is not available. 

  

	8.	 Concerning the Warrant Agent and Other Matters. 

 

	8.1	 Payment of Taxes. The Company shall from time to time promptly pay all taxes and charges that may be
imposed upon the Company or the Warrant Agent in respect of the issuance or delivery of shares of Common Stock upon the exercise of the Warrants, but the Company and the Warrant Agent shall not be obligated to pay any transfer taxes in respect of
the Warrants or such shares of Common Stock. 

  
 20 

	8.2	 Resignation, Consolidation, or Merger of Warrant Agent. 

 

	 	8.2.1	 Appointment of Successor Warrant Agent. The Warrant Agent, or any successor to it hereafter appointed,
may resign its duties and be discharged from all further duties and liabilities hereunder after giving sixty (60) days’ notice in writing to the Company. If the office of the Warrant Agent becomes vacant by resignation or incapacity to act
or otherwise, the Company shall appoint in writing a successor Warrant Agent in place of the Warrant Agent. If the Company shall fail to make such appointment within a period of thirty (30) days after it has been notified in writing of such
resignation or incapacity by the Warrant Agent or by the holder of a Warrant (who shall, with such notice, submit his, her or its Warrant for inspection by the Company), then the holder of any Warrant may apply to the Supreme Court of the State of
New York for the County of New York for the appointment of a successor Warrant Agent at the Company’s cost. Any successor Warrant Agent, whether appointed by the Company or by such court, shall be a corporation organized and existing under the
laws of the State of New York, in good standing and having its principal office in the Borough of Manhattan, City and State of New York, and authorized under such laws to exercise corporate trust powers and subject to supervision or examination by
federal or state authority. After appointment, any successor Warrant Agent shall be vested with all the authority, powers, rights, immunities, duties, and obligations of its predecessor Warrant Agent with like effect as if originally named as
Warrant Agent hereunder, without any further act or deed; but if for any reason it becomes necessary or appropriate, the predecessor Warrant Agent shall execute and deliver, at the expense of the Company, an instrument transferring to such successor
Warrant Agent all the authority, powers, and rights of such predecessor Warrant Agent hereunder; and upon request of any successor Warrant Agent the Company shall make, execute, acknowledge, and deliver any and all instruments in writing for more
fully and effectually vesting in and confirming to such successor Warrant Agent all such authority, powers, rights, immunities, duties, and obligations. 

  

	 	8.2.2	 Notice of Successor Warrant Agent. In the event a successor Warrant Agent shall be appointed, the
Company shall give notice thereof to the predecessor Warrant Agent and the Company’s transfer agent for the shares of Common Stock not later than the effective date of any such appointment. 

 

	 	8.2.3	 Merger or Consolidation of Warrant Agent. Any entity into which the Warrant Agent may be merged or with
which it may be consolidated or any entity resulting from any merger or consolidation to which the Warrant Agent shall be a party shall be the successor Warrant Agent under this Agreement without any further act. 

  
 21 

	8.3	 Fees and Expenses of Warrant Agent. 

 

	 	8.3.1	 Remuneration. The Company agrees to pay the Warrant Agent reasonable remuneration for its services as
such Warrant Agent hereunder and shall, pursuant to its obligations under this Agreement, reimburse the Warrant Agent upon demand for all expenditures that the Warrant Agent may reasonably incur in the execution of its duties hereunder.

  

	 	8.3.2	 Further Assurances. The Company agrees to perform, execute, acknowledge, and deliver or cause to be
performed, executed, acknowledged, and delivered all such further and other acts, instruments, and assurances as may reasonably be required by the Warrant Agent for the carrying out or performing of the provisions of this Agreement.

  

	8.4	 Liability of Warrant Agent. 

 

	 	8.4.1	 Reliance on Company Statement. Whenever in the performance of its duties under this Agreement, the
Warrant Agent shall deem it necessary or desirable that any fact or matter be proved or established by the Company prior to taking or suffering any action hereunder, such fact or matter (unless other evidence in respect thereof be herein
specifically prescribed) may be deemed to be conclusively proved and established by a statement signed by the President, Principal Financial Officer, Principal Accounting Officer, Chief Corporate Development Officer, Chief Legal Officer or Secretary
of the Company or other authorized officer of the Company and delivered to the Warrant Agent. The Warrant Agent may rely upon such statement for any action taken or suffered in good faith by it pursuant to the provisions of this Agreement.

  

	 	8.4.2	 Indemnity. The Warrant Agent shall be liable hereunder only for its own gross negligence, willful
misconduct or bad faith. The Company agrees to indemnify the Warrant Agent and save it harmless against any and all liabilities, including judgments, costs and reasonable counsel fees, for anything done or omitted by the Warrant Agent in the
execution of this Agreement, except as a result of the Warrant Agent’s gross negligence, willful misconduct or bad faith. 

  

	 	8.4.3	 Exclusions. The Warrant Agent shall have no responsibility with respect to the validity of this
Agreement or with respect to the validity or execution of any Warrant (except its countersignature thereof). The Warrant Agent shall not be responsible for any breach by the Company of any covenant or condition contained in this Agreement or in any
Warrant. The Warrant Agent shall not be responsible to make any adjustments required under the provisions of Section 4 hereof or responsible for the manner, method, or amount of any such adjustment or the ascertaining of
the existence of facts that would require any such adjustment; nor shall it by any act hereunder be deemed to make any representation or warranty as to the authorization or reservation of any shares of Common Stock to be issued pursuant to this
Agreement or any Warrant or as to whether any shares of Common Stock shall, when issued, be valid and fully paid and non-assessable. 

  
 22 

	8.5	 Acceptance of Agency. The Warrant Agent hereby accepts the agency established by this Agreement and
agrees to perform the same upon the terms and conditions herein set forth and among other things, shall account promptly to the Company with respect to Warrants exercised and concurrently account for, and pay to the Company, all monies received by
the Warrant Agent for the purchase of shares of Common Stock through the exercise of the Warrants. 

  

	8.6	 Waiver. The Warrant Agent has no right of set-off or any other
right, title, interest or claim of any kind (“Claim”) in, or to any distribution of, the Trust Account (as defined in that certain Investment Management Trust Agreement, dated as of the date hereof, by and between the Company and
Continental Stock Transfer & Trust Company, as trustee thereunder) and hereby agrees not to seek recourse, reimbursement, payment or satisfaction for any Claim against the Trust Account for any reason whatsoever. The Warrant Agent
hereby waives any and all Claims against the Trust Account and any and all rights to seek access to the Trust Account. 

  

	9.	 Miscellaneous Provisions. 

 

	9.1	 Successors. All the covenants and provisions of this Agreement by or for the benefit of the Company or
the Warrant Agent shall bind and inure to the benefit of their respective successors and assigns. 

  

	9.2	 Notices. Any notice, statement or demand authorized by this Agreement to be given or made by the Warrant
Agent or by the holder of any Warrant to or on the Company shall be sufficiently given when delivered if by hand or overnight delivery or if sent by certified mail or private courier service within five (5) days after deposit of such
notice, addressed (until another address is filed in writing by the Warrant Agent with the Company), as follows: 

 Post
Holdings Partnering Corporation 
 2503 S. Hanley Road 

St. Louis, Missouri 63144 

Attention: Chief Financial Officer 

Any notice, statement or demand authorized by this Agreement to be given or made by the holder of any Warrant or by the Company to or on the
Warrant Agent shall be sufficiently given when delivered if by hand or overnight delivery or if sent by certified mail or private courier service within five (5) days after deposit of such notice, addressed (until another address is filed in
writing by the Warrant Agent with the Company), as follows: 
 Continental Stock Transfer & Trust Company 

One State Street, 30th Floor 

New York, NY 10004 
 Attention:
Compliance Department 
  

	9.3	 Applicable Law and Exclusive Forum. The validity, interpretation, and performance of this Agreement and
of the Warrants shall be governed by and construed in accordance with the laws of the State of Delaware. The Company hereby agrees that any action, proceeding or 

  
 23 

	 	
claim against it arising out of or relating in any way to this Agreement or the Warrants will be brought and enforced in the courts of the State of Delaware or the United States District Court
for the District of Delaware, and irrevocably submits to such jurisdiction, which jurisdictions will be the exclusive forums for any such action, proceeding or claim. The Company hereby waives any objection to such exclusive jurisdictions and that
such courts represent an inconvenient forum. Notwithstanding the foregoing, the provisions of this paragraph will not apply to suits brought to enforce any liability or duty created by the Exchange Act or any other claim for which the federal
district courts of the United States of America are the sole and exclusive forum, and the federal district courts of the United States of America shall, to the fullest extent permitted by law, be the sole and exclusive forum for the resolution of
any complaint asserting such causes of action. 

 Any person or entity purchasing or otherwise acquiring any interest in the
Warrants shall be deemed to have notice of and to have consented to the forum provisions in this Section 9.3. If any action, the subject matter of which is within the scope of the forum provisions above, is filed in a court
other than the state and federal courts located within the State of Delaware or the federal district courts of the United States of America, as applicable (a “foreign action”), in the name of any warrant holder, such warrant holder
shall be deemed to have consented to: (x) the personal jurisdiction of the state and federal courts located within the State of Delaware or the federal courts of the United States of America, as applicable, in connection with any action brought
in any such court to enforce the forum provisions (an “enforcement action”), and (y) having service of process made upon such warrant holder in any such enforcement action by service upon such warrant holder’s counsel in
the foreign action as agent for such warrant holder. 
  

	9.4	 Persons Having Rights under this Agreement. Nothing in this Agreement shall be construed to confer upon,
or give to, any person or corporation other than the parties hereto and the Registered Holders of the Warrants any right, remedy, or claim under or by reason of this Agreement or of any covenant, condition, stipulation, promise, or agreement hereof.
All covenants, conditions, stipulations, promises, and agreements contained in this Agreement shall be for the sole and exclusive benefit of the parties hereto and their successors and assigns and of the Registered Holders of the Warrants.

  

	9.5	 Examination of the Warrant Agreement. A copy of this Agreement shall be available at all reasonable
times at the office of the Warrant Agent in the Borough of Manhattan, City and State of New York, for inspection by the Registered Holder of any Warrant. The Warrant Agent may require any such holder to submit his Warrant for inspection by it.

  

	9.6	 Counterparts; Electronic Signatures. This Agreement may be executed in any number of original or
facsimile counterparts and each of such counterparts shall for all purposes be deemed to be an original, and all such counterparts shall together constitute but one and the same instrument. A signature to this Agreement transmitted electronically
shall have the same authority, effect, and enforceability as an original signature. 

  

	9.7	 Effect of Headings. The section headings herein are for convenience only and are not part of this
Agreement and shall not affect the interpretation thereof. 

  
 24 

	9.8	 Amendments. This Agreement may be amended by the parties hereto without the consent of any Registered
Holder for the purpose of (i) curing any ambiguity or to correct any mistake, including to conform the provisions hereof to the description of the terms of the Warrants and this Agreement set forth in the Prospectus, or defective provision
contained herein, (ii) modifying the terms of this Agreement and the Warrants pursuant to Section 4.1.1(b) or (iii) adding or changing any provisions with respect to matters or questions arising under this
Agreement as the parties may deem necessary or desirable and that the parties deem shall not adversely affect the rights of the Registered Holders under this Agreement. All other modifications or amendments, including any modification or amendment
to increase the Warrant Price or shorten the Exercise Period and any amendment to the terms of only the Private Placement Warrants or Forward Purchase Warrants, shall require the vote or written consent of the Registered Holders of 50% of the
then-outstanding Public Warrants and, solely with respect to any amendment to the terms of the Private Placement Warrants or Forward Purchase Warrants or any provision of this Agreement with respect to the Private Placement Warrants and Forward
Purchase Warrants, 50% of the then-outstanding Private Placement Warrants or Forward Purchase Warrants, respectively. Notwithstanding the foregoing, the Company may lower the Warrant Price or extend the duration of the Exercise Period pursuant to
Sections 3.1 and 3.2, respectively, without the consent of the Registered Holders. 

  

	9.9	 Severability. This Agreement shall be deemed severable, and the invalidity or unenforceability of any
term or provision hereof shall not affect the validity or enforceability of this Agreement or of any other term or provision hereof. Furthermore, in lieu of any such invalid or unenforceable term or provision, the parties hereto intend that there
shall be added as a part of this Agreement a provision as similar in terms to such invalid or unenforceable provision as may be possible and be valid and enforceable. 

 

	9.10	 Confidentiality. The Warrant Agent and the Company agree that all books, records, information and data
pertaining to the business of the other party, including inter alia, personal, non-public warrant holder information, which are exchanged or received pursuant to the negotiation or the carrying out of
this Agreement, including the fees for services, shall remain confidential, and shall not be voluntarily disclosed to any other person, except as may be required by law or regulation, including, without limitation, pursuant to requests from the
Securities and Exchange Commission and subpoenas from state or federal government authorities (e.g., in divorce and criminal actions). 

Exhibit A Form of Warrant Certificate 

Exhibit B Legend — Sponsor’s Warrants 

  
 25 

 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed as of
the date first above written. 
  

			
	POST HOLDINGS PARTNERING CORPORATION
		
	By:	 	 
	 Name:
	 	
	 Title:
	 	

  

			
	CONTINENTAL STOCK TRANSFER & TRUST COMPANY, AS WARRANT AGENT
		
	By:	 	 
	 Name:
	 	
	 Title:
	 	

  
 [Signature Page to
Warrant Agreement] 

 Exhibit A 

Form of Warrant Certificate 

[FACE] 
 Number 

Warrants 
 THIS WARRANT SHALL BE NULL AND
VOID IF NOT EXERCISED PRIOR TO THE EXPIRATION OF THE EXERCISE PERIOD PROVIDED FOR IN THE WARRANT AGREEMENT DESCRIBED BELOW 
 Post Holdings
Partnering Corporation 
 Incorporated Under the Laws of the State of Delaware 

CUSIP [                ] 

Warrant Certificate 

This Warrant Certificate certifies that , or registered assigns, is the registered holder of warrant(s) evidenced hereby (the
“Warrants” and each, a “Warrant”) to purchase shares of Series A common stock, $0.0001 par value per share (“Series A Common Stock”), of Post Holdings Partnering Corporation, a Delaware corporation
(the “Company”). Each 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 shares of Series A Common Stock 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 share of Series A
Common Stock. No fractional shares will be issued upon exercise of any Warrant. If, upon the exercise of Warrant, a holder would be entitled to receive a fractional interest in a share, the Company will, upon exercise, round down to the nearest
whole number of the number of shares of Series A Common Stock to be issued to the holder. The number of shares of Series A Common Stock issuable upon exercise of the Warrants is subject to adjustment upon the occurrence of certain events as set
forth in the Warrant Agreement. 
 The initial Exercise Price per share of Series A Common Stock for any Warrant is equal to $11.50 per
whole share. The Exercise Price is subject to adjustment upon the occurrence of certain events as 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 null and 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 by and
construed in accordance with the internal laws of the State of Delaware. 
  

			
	POST HOLDINGS PARTNERING CORPORATION
		
	By:	 	 
	 Name:
	 	
	 Title:
	 	

  

			
	CONTINENTAL STOCK TRANSFER & TRUST COMPANY, AS WARRANT AGENT
		
	By:	 	 
	 Name:
	 	
	 Title:
	 	

  
 2 

 [Form of Warrant Certificate] 

[Reverse] 
 The Warrants
evidenced by this Warrant Certificate are part of a duly authorized issue of Warrants entitling the holder on exercise to receive shares of Series A Common Stock and are issued or to be issued pursuant to a Warrant Agreement dated as
of                , 2021 (the “Warrant Agreement”), duly executed and delivered by the Company to Continental Stock Transfer & Trust Company, a
New York corporation, as warrant agent (or successor warrant agent) (collectively, 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 designated office(s) 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 shares of Series A Common Stock to be issued upon exercise is effective under the Securities Act and (ii) a prospectus thereunder relating to the shares of Series A Common Stock is
current, except through “cashless exercise” as provided for in the Warrant Agreement. 
 The Warrant Agreement provides that upon
the occurrence of certain events the number of shares of Series A Common Stock issuable upon 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 a share of Series A Common Stock, the Company shall, upon exercise, round down to the nearest whole number of shares of Series A Common Stock to be issued to the holder of the Warrant. 

Warrant Certificates, when surrendered at the designated office(s) 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(s) 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 third-party charges 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 stockholder 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 shares of Series A Common
Stock and herewith tenders payment for such shares of Series A Common Stock to the order of Post Holdings Partnering Corporation (the “Company”) in the amount of $ in accordance with the terms hereof. The undersigned requests that a
certificate for such shares of Series A Common Stock be registered in the name of , whose address is and that such shares of Series A Common Stock be delivered to whose address is . If said number of shares of Series A Common Stock is less than all
of the shares of Series A Common Stock purchasable hereunder, the undersigned requests that a new Warrant Certificate representing the remaining balance of such shares of Series A Common Stock 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 6.1 or
Section 6.2 of the Warrant Agreement and the Company has required cashless exercise pursuant to Section 6.4 of the Warrant Agreement, the number of shares of Series A Common Stock that this Warrant
is exercisable for shall be determined in accordance with Section 3.3.1(b) and Section 6.4 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
Section 3.3.1(c) of the Warrant Agreement, the number of shares of Series A Common Stock that this Warrant is exercisable for shall be determined in accordance with Section 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 shares of Series A Common Stock 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 shares of Series A Common Stock 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 shares of Series A Common Stock. If said
number of shares of Series A Common Stock is less than all of the shares of Series A Common Stock purchasable hereunder (after giving effect to the cashless exercise), the undersigned requests that a new Warrant Certificate representing the
remaining balance of such shares of Series A Common Stock be registered in the name of                 , whose address is
                , and that such Warrant Certificate be delivered to                 ,
whose address is                 . 

					
	Date:	  		  	 
		  		  	(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 (OR ANY SUCCESSOR RULE) UNDER THE SECURITIES EXCHANGE ACT, OF 1934, AS AMENDED). 

  
 6 

 Exhibit B 

LEGEND 
 THE SECURITIES REPRESENTED HEREBY
HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS, AND MAY NOT BE OFFERED, SOLD, TRANSFERRED OR OTHERWISE DISPOSED OF UNLESS REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND ANY
APPLICABLE STATE SECURITIES LAWS OR AN EXEMPTION FROM REGISTRATION IS AVAILABLE. IN ADDITION, SUBJECT TO ANY ADDITIONAL LIMITATIONS ON TRANSFER DESCRIBED IN THE LETTER AGREEMENT BY AND AMONG POST HOLDINGS PARTNERING CORPORATION (THE
“COMPANY”), PHPC SPONSOR LLC AND THE OTHER PARTIES THERETO, THE SECURITIES REPRESENTED BY THIS CERTIFICATE MAY NOT BE SOLD OR TRANSFERRED PRIOR TO THE DATE THAT IS THIRTY (30) DAYS AFTER THE DATE UPON WHICH THE COMPANY COMPLETES ITS
PARTNERING TRANSACTION (AS DEFINED IN THE WARRANT AGREEMENT REFERRED TO HEREIN) EXCEPT TO A PERMITTED TRANSFEREE (AS DEFINED IN SECTION 2 OF THE WARRANT AGREEMENT) WHO AGREES IN WRITING WITH THE COMPANY TO BE SUBJECT TO SUCH TRANSFER PROVISIONS.

 SECURITIES EVIDENCED HEREBY AND SHARES OF COMMON STOCK OF THE COMPANY ISSUED UPON EXERCISE OF SUCH SECURITIES SHALL BE ENTITLED TO REGISTRATION RIGHTS
UNDER A REGISTRATION RIGHTS AGREEMENT TO BE EXECUTED BY THE COMPANY.

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