Exhibit 10.8


 


PRIVATE PLACEMENT WARRANTS PURCHASE AGREEMENT


 


THIS PRIVATE PLACEMENT WARRANTS PURCHASE AGREEMENT
(as it may from time to time be amended and including all exhibits referenced herein, this “Agreement”), dated
as of [●], 2021, is entered into by and between Onyx Acquisition Co. I, a Cayman Islands exempted company (the “Company”),
and BTIG, LLC (the “Purchaser”).


 


WHEREAS, the Company intends to consummate an initial
public offering of the Company’s units (the “Public Offering”), each unit consisting of one Class A ordinary
share of the Company, par value $0.0001 per share (each, a “Share”), and one-half of one redeemable warrant,
each whole warrant entitling the holder to purchase one Share at an exercise price of $11.50 per Share, as set forth in the Company’s
Registration Statement on Form S-1, File Number 333-[●] (the “Registration Statement”), filed with the
U.S. Securities and Exchange Commission (the “SEC”), under the Securities Act of 1933, as amended (the “Securities
Act”).


 


WHEREAS, the Purchaser has agreed to purchase an
aggregate of 1,000,000 warrants (the “Private Placement Warrants”), each Private Placement Warrant entitling
the holder to purchase one Share at an exercise price of $11.50 per Share, at a price of $1.00 per warrant, subject to adjustment.


 


NOW THEREFORE, in consideration of the mutual promises
contained in this Agreement and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties to this Agreement hereby, intending legally to be bound, agree as follows:


 


AGREEMENT


 


Section 1. Authorization, Purchase and Sale;
Terms of the Private Placement Warrants.


 


A. Authorization
of the Private Placement Warrants. The Company has duly authorized the issuance and sale of the Private Placement Warrants to the
Purchaser.


 


B. Purchase
and Sale of the Private Placement Warrants. On the date of the consummation of the Public Offering (the “Closing Date”),
the Company shall issue and sell to the Purchaser, and the Purchaser shall purchase from the Company, 1,000,000 Private Placement Warrants
at a price of $1.00 per Warrant for an aggregate purchase price of $1,000,000 (the “Purchase Price”). The Purchaser
shall pay the Purchase Price by wire transfer of immediately available funds in the amount of $1,000,000 to the Company at a financial
institution to be chosen by the Company, in accordance with the Company’s wiring instructions on the Closing Date. On the Closing
Date, subject to the receipt of funds pursuant to the immediately prior sentence, the Company, at its option, shall deliver a certificate
evidencing the Private Placement Warrants purchased on such date duly registered in the Purchaser’s name to the Purchaser or effect
such delivery in book-entry form.


 


C. Terms
of the Private Placement Warrants.


 


(i) Each
Private Placement Warrant shall have the terms set forth in a Warrant Agreement to be entered into by the Company and a warrant agent,
at the time of, or prior to, the Closing Date, in connection with the Public Offering (the “Warrant Agreement”).
Notwithstanding anything to the contrary in the Warrant Agreement, the Private Placement Warrants purchased by the Purchaser shall not
be exercised more than five years from the effective date of the Registration Statement (the “Effective Date”).


 






     


     


    

 


(ii) At
the time of, or prior to, the Closing Date, the Company and the Purchaser shall enter into a registration and shareholder rights agreement
(the “Registration and Shareholder Rights Agreement”) pursuant to which the Company will grant certain registration
rights to the Purchaser relating to the Private Placement Warrants and the Shares underlying the Private Placement Warrants.


 


(iii) The
Purchaser acknowledges and agrees that the Private Placement Warrants and the related registration rights will be deemed compensation
by the Financial Industry Regulatory Authority (“FINRA”) and will therefore be subject to lock-up for a period
of 180 days immediately following the Effective Date. Pursuant to FINRA Rule 5110(e)(1), the Private Placement Warrants and their component
parts and the related registration rights may not be sold, transferred, assigned, pledged or hypothecated or be the subject of any hedging,
short sale, derivative, put or call transaction that would result in the economic disposition of such securities by any person during
the foregoing 180-day period following the Effective Date, except to any underwriter or selected dealers participating in the Public Offering
and the officers or partners, registered persons or affiliates or partners thereof.


 


(iv) The
obligation of the Purchaser to purchase and pay for the Private Placement Warrants as provided herein shall be subject to the satisfaction
of the conditions set forth in Section [●] of the underwriting agreement, dated as of the date hereof, by and between the Company
and BTIG, LLC, as representative of the underwriters named therein (the “Underwriting Agreement”).


 


Section 2. Representations and Warranties
of the Company. As a material inducement to the Purchaser to enter into this Agreement and purchase the Private Placement Warrants,
the Company hereby represents and warrants to the Purchaser (which representations and warranties shall survive the Closing Date) that:


 


A. Incorporation
and Corporate Power. The Company is an exempted company duly incorporated, validly existing and in good standing under the laws of
the Cayman Islands and is qualified to do business in every jurisdiction in which the failure to so qualify would reasonably be expected
to have a material adverse effect on the financial condition, operating results or assets of the Company. The Company possesses all requisite
corporate power and authority necessary to carry out the transactions contemplated by this Agreement and the Warrant Agreement.


 


B. Authorization;
No Breach.


 


(i) The
execution, delivery and performance of this Agreement and the Private Placement Warrants have been duly authorized by the Company as of
the Closing Date. This Agreement constitutes the valid and binding obligation of the Company, enforceable in accordance with its terms,
subject to bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and other laws of general applicability relating
to or affecting creditors’ rights and to general equitable principles (whether considered in a proceeding in equity or law). Upon
issuance in accordance with, and payment pursuant to, the terms of the Warrant Agreement and this Agreement, the Private Placement Warrants
will constitute valid and binding obligations of the Company, enforceable in accordance with their terms as of the Closing Date.


 






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(ii) The
execution and delivery by the Company of this Agreement and the Private Placement Warrants, the issuance and sale of the Private Placement
Warrants, the issuance of the Shares upon exercise of the Private Placement Warrants and the fulfillment of and compliance with the respective
terms hereof and thereof by the Company, do not and will not as of the Closing Date (a) conflict with or result in a breach of the terms,
conditions or provisions of, (b) constitute a default under, (c) result in the creation of any lien, security interest, charge or encumbrance
upon the Company’s share capital or assets under, (d) result in a violation of, or (e) require any authorization, consent, approval,
exemption or other action by or notice or declaration to, or filing with, any court or administrative or governmental body or agency pursuant
to the amended and restated memorandum and articles of association of the Company (in effect on the date hereof or as may be amended prior
to completion of the Public Offering, the “Articles”) or any material law, statute, rule or regulation to which
the Company is subject, or any agreement, order, judgment or decree to which the Company is subject, except for any filings required after
the date hereof under federal or state securities laws.


 


C. Title
to Securities. Upon issuance in accordance with, and payment pursuant to, the terms hereof, the Articles and the Warrant Agreement,
and upon registration in the Company’s register of members, the Private Placement Warrants will be duly and validly issued and the
Shares issuable upon exercise of the Private Placement Warrants will be duly and validly issued, fully paid and non-assessable. On the
date of issuance of the Private Placement Warrants, the Shares issuable upon exercise of the Private Placement Warrants shall have been
reserved for issuance. Upon issuance in accordance with, and payment pursuant to, the terms hereof and the Warrant Agreement, and upon
registration in the Company’s register of members, the Purchaser will have good title to the Private Placement Warrants purchased
by it and the Shares issuable upon exercise of such Private Placement Warrants, free and clear of all liens, claims and encumbrances of
any kind, other than (i) transfer restrictions hereunder and under the other agreements contemplated hereby, (ii) transfer restrictions
under federal and state securities laws, and (iii) liens, claims or encumbrances imposed due to the actions of the Purchaser.


 


D. Governmental
Consents. No permit, consent, approval or authorization of, or declaration to or filing with, any governmental authority is required
in connection with the execution, delivery and performance by the Company of this Agreement or the consummation by the Company of any
other transactions contemplated hereby.


 


E. Regulation
D Qualification. Neither the Company nor, to its actual knowledge, any of its affiliates, members, officers, directors or beneficial
shareholders of 20% or more of its outstanding securities, has experienced a disqualifying event as enumerated pursuant to Rule 506(d)
of Regulation D under the Securities Act.


 


F. Additional
Representations. The representations and warranties of the Company set forth in the Underwriting Agreement are hereby incorporated
herein.


 






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Section 3. Representations and Warranties
of the Purchaser. As a material inducement to the Company to enter into this Agreement and issue and sell the Private Placement Warrants
to the Purchaser, the Purchaser hereby represents and warrants to the Company (which representations and warranties shall survive the
Closing Date) that:


 


A. Organization
and Requisite Authority. The Purchaser possesses all requisite power and authority necessary to carry out the transactions contemplated
by this Agreement.


 


B. Authorization;
No Breach.


 


(i) This
Agreement constitutes a valid and binding obligation of the Purchaser, enforceable in accordance with its terms, subject to bankruptcy,
insolvency, fraudulent conveyance, reorganization, moratorium and other laws of general applicability relating to or affecting creditors’
rights and to general equitable principles (whether considered in a proceeding in equity or law).


 


(ii) The
execution and delivery by the Purchaser of this Agreement and the fulfillment of and compliance with the terms hereof by the Purchaser
does not and shall not as of the Closing Date (a) conflict with or result in a breach by the Purchaser of the terms, conditions or provisions
of, (b) constitute a default under, (c) result in the creation of any lien, security interest, charge or encumbrance upon the Purchaser’s
equity or assets under, (d) result in a violation of, or (e) require authorization, consent, approval, exemption or other action by or
notice or declaration to, or filing with, any court or administrative or governmental body or agency pursuant to the Purchaser’s
organizational documents in effect on the date hereof or as may be amended prior to completion of the contemplated Public Offering, or
any material law, statute, rule or regulation to which the Purchaser is subject, or any agreement, instrument, order, judgment or decree
to which the Purchaser is subject, except for any filings required after the date hereof under federal or state securities laws.


 


C. Investment
Representations.


 


(i) The
Purchaser is acquiring the Private Placement Warrants and, upon exercise of the Private Placement Warrants, the Shares issuable upon such
exercise (collectively, the “Securities”) for its own account, for investment purposes only and not with a view
towards, or for resale in connection with, any public sale or distribution thereof.


 


(ii) The
Purchaser is an “accredited investor” as such term is defined in Rule 501(a)(3) of Regulation D, and the Purchaser
has not experienced a disqualifying event as enumerated pursuant to Rule 506(d) of Regulation D under the Securities Act.


 


(iii) The
Purchaser understands that the Securities are being offered and will be sold to it in reliance on specific exemptions from the registration
requirements of the United States federal and state securities laws and that the Company is relying upon the truth and accuracy of, and
the Purchaser’s compliance with, the representations and warranties of the Purchaser set forth herein in order to determine the
availability of such exemptions and the eligibility of the Purchaser to acquire such Securities.


 






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(iv) The
Purchaser did not decide to enter into this Agreement as a result of any general solicitation or general advertising within the meaning
of Rule 502(c) of Regulation D under the Securities Act.


 


(v) The
Purchaser has been furnished with all materials relating to the business, finances and operations of the Company and materials relating
to the offer and sale of the Securities which have been requested by the Purchaser. The Purchaser has been afforded the opportunity to
ask questions of the executive officers and directors of the Company. The Purchaser understands that its investment in the Securities
involves a high degree of risk and it has sought such accounting, legal and tax advice as it has considered necessary to make an informed
investment decision with respect to the acquisition of the Securities.


 


(vi) The
Purchaser understands that no United States federal or state agency or any other government or governmental agency has passed on or made
any recommendation or endorsement of the Securities or the fairness or suitability of the investment in the Securities by the Purchaser
nor have such authorities passed upon or endorsed the merits of the offering of the Securities.


 


(vii) The
Purchaser understands that: (a) the Securities have not been and are not being registered under the Securities Act or any state securities
laws, and may not be offered for sale, sold, assigned or transferred unless (1) subsequently registered thereunder or (2) sold in reliance
on an exemption therefrom; and (b) except as specifically set forth in the Registration and Shareholder Rights Agreement, neither the
Company nor any other person is under any obligation to register the Securities under the Securities Act or any state securities laws
or to comply with the terms and conditions of any exemption thereunder. In this regard, the Purchaser understands that the SEC has taken
the position that promoters or affiliates of a blank check company and their transferees, both before and after an initial business combination,
are deemed to be “underwriters” under the Securities Act when reselling the securities of a blank check company.
Based on that position, Rule 144 adopted pursuant to the Securities Act would not be available for resale transactions of the Securities
despite technical compliance with the requirements of such Rule, and the Securities can be resold only through a registered offering or
in reliance upon another exemption from the registration requirements of the Securities Act.


 


(viii) The
Purchaser has such knowledge and experience in financial and business matters, knowledge of the high degree of risk associated with investments
in the securities of companies in the development stage such as the Company, is capable of evaluating the merits and risks of an investment
in the Securities and is able to bear the economic risk of an investment in the Securities in the amount contemplated hereunder for an
indefinite period of time. The Purchaser has adequate means of providing for its current financial needs and contingencies and will have
no current or anticipated future needs for liquidity which would be jeopardized by the investment in the Securities. The Purchaser can
afford a complete loss of its investments in the Securities.


 


(ix) The
Purchaser understands that the Private Placement Warrants shall bear the legend substantially in the form set forth in the Warrant Agreement.


 






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Section 4. Conditions of the Purchaser’s
Obligations. The obligations of the Purchaser to purchase and pay for the Private Placement Warrants are subject to the fulfillment,
on or before the Closing Date, of each of the following conditions:


 


A. Representations
and Warranties. The representations and warranties of the Company contained in Section 2 shall be true and correct at and as of the
Closing Date as though then made.


 


B. Performance.
The Company shall have performed and complied with all agreements, obligations and conditions contained in this Agreement that are required
to be performed or complied with by it on or before the Closing Date.


 


C. No
Injunction. No litigation, statute, rule, regulation, executive order, decree, ruling or injunction shall have been enacted, entered,
promulgated or endorsed by or in any court or governmental authority of competent jurisdiction or any self-regulatory organization having
authority over the matters contemplated hereby, which prohibits the consummation of any of the transactions contemplated by this Agreement
or the Warrant Agreement.


 


D. Warrant
Agreement and Registration and Shareholder Rights Agreement. The Company shall have entered into the Warrant Agreement, in the form
of Exhibit A hereto, and the Registration and Shareholder Rights Agreement, in the form of Exhibit B hereto, in each case on terms satisfactory
to the Purchaser.


 


Section 5. Conditions of the Company’s
Obligations. The obligations of the Company to the Purchaser under this Agreement are subject to the fulfillment, on or before the
Closing Date, of each of the following conditions:


 


A. Representations
and Warranties. The representations and warranties of the Purchaser contained in Section 3 shall be true and correct at and as of
the Closing Date as though then made.


 


B. Performance.
The Purchaser shall have performed and complied with all agreements, obligations and conditions contained in this Agreement that are required
to be performed or complied with by the Purchaser on or before the Closing Date.


 


C. Corporate
Consents. The Company shall have obtained the consent of its Board of Directors authorizing the execution, delivery and performance
of this Agreement and the Warrant Agreement and the issuance and sale of the Private Placement Warrants hereunder.


 


D. No
Injunction. No litigation, statute, rule, regulation, executive order, decree, ruling or injunction shall have been enacted, entered,
promulgated or endorsed by or in any court or governmental authority of competent jurisdiction or any self-regulatory organization having
authority over the matters contemplated hereby, which prohibits the consummation of any of the transactions contemplated by this Agreement
or the Warrant Agreement.


 


E. Warrant
Agreement. The Company shall have entered into the Warrant Agreement.


 


F. Survival
of Representations and Warranties. All the representations and warranties contained herein shall survive the Closing Date.


 






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Section 6. Miscellaneous.


 


A. Successors
and Assigns. Except as otherwise expressly provided herein, all covenants and agreements contained in this Agreement by or on behalf
of any of the parties hereto shall bind and inure to the benefit of the respective successors of the parties hereto whether so expressed
or not. Notwithstanding the foregoing or anything to the contrary herein, the parties may not assign this Agreement, other than assignments
by the Purchaser to affiliates thereof (including, without limitation one or more of its members).


 


B. Severability.
Whenever possible, each provision of this Agreement shall be interpreted in such manner as to be effective and valid under applicable
law, but if any provision of this Agreement is held to be prohibited by or invalid under applicable law, such provision shall be ineffective
only to the extent of such prohibition or invalidity, without invalidating the remainder of this Agreement.


 


C. Counterparts.
This Agreement may be executed in multiple counterparts (including facsimile or PDF counterparts), each of which shall be deemed an original,
and all of which together shall constitute the same instrument, but only one of which need be produced. Signatures to this Agreement
transmitted via facsimile or e-mail shall be valid and effective to bind the party so signing (including any electronic signature covered
by the U.S. federal ESIGN Act of 2000, Uniform Electronic Transactions Act, the Electronic Signatures and Records Act or other applicable
law, e.g., www.docusign.com).


 


D. Descriptive
Headings; Interpretation. The descriptive headings of this Agreement are inserted for convenience only and do not constitute a substantive
part of this Agreement. The use of the word “including” in this Agreement shall be by way of example rather than by limitation.


 


E. Governing
Law. This Agreement shall be deemed to be a contract made under the laws of the State of New York and for all purposes shall be construed
in accordance with the internal laws of the State of New York, without giving effect to conflicts of law principles that would result
in the application of the laws of another jurisdiction.


 


F. Amendments.
This Agreement may not be amended, modified or waived as to any particular provision, except by a written instrument executed by the parties
hereto.


 


[Signature page follows]


 






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IN WITNESS WHEREOF, the parties hereto have executed
this Agreement to be effective as of the date first set forth above.


 


	 	COMPANY:
	 	 
	 	ONYX ACQUISITION CO. I
	 	 
	 	By:	 
	 	Name:	Michael Stern
	 	Title:	Director, Chairman and Chief Executive Officer
	 	 
	 	PURCHASER:
	 	 
	 	BTIG, LLC
	 	 
	 	By:	 
	 	Name:	 
	 	Title:   


 






     


     


    

 


EXHIBIT A


 


Warrant Agreement


 






     


     


    

 


EXHIBIT B


 


Registration and Shareholder Rights Agreement