Exhibit 10.6


 


UNDERWRITERS
WARRANTS PURCHASE AGREEMENT


 


THIS UNDERWRITERS WARRANTS
PURCHASE AGREEMENT, effective as of ___ _, 2021 (as it may from time to time be amended, this “Agreement”), is entered
into by and between CENAQ Energy Corp., a Delaware corporation (the “Company”), and Imperial Capital LLC as representative
of several underwriters (the “Purchaser”).


 


WHEREAS, the Company intends
to consummate a public offering of the Company’s units (the “Public Offering”), each unit consisting of one share
of the Company’s Class A common stock, par value $0.0001 per share (a “Share”), and one-half of one warrant,
each whole warrant exercisable for one Share at an exercise price of $11.50 per Share, as set forth in the Company’s registration
statement on Form S-1 related to the Public Offering (the “Registration Statement”); and


 


WHEREAS, the Purchaser has
agreed to purchase from the Company an aggregate of 1,500,000 warrants (or up to 1,725,000 warrants if the over-allotment option in connection
with the Public Offering is exercised in full) (the “Underwriters Warrants”), each whole Underwriters Warrant entitling
the holder to purchase one Share at an exercise price of $11.50 per Share.


 


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


 


Article
I.

Authorization, Purchase and Sale; Terms of

the UNDERWRITERS Warrants.


 


Section 1.01 Authorization
of the Underwriters Warrants. The Company has duly authorized the issuance and sale of the Underwriters Warrants to the Purchaser.


 


Section 1.02 Purchase and
Sale of the Sponsor Warrants.


 


(a) As payment in full for the
1,500,000 Underwriters Warrants being purchased under this Agreement, Purchaser shall pay $1,500,000 (the “Purchase Price”),
by wire transfer of immediately available funds or by such other method as may be reasonably acceptable to the Company, to the trust account
(the “Trust Account”) at a financial institution to be chosen by the Company, maintained by J.P. Morgan Chase Bank,
N.A. with Continental Stock Transfer & Trust Company acting as trustee, at least one (1) business day prior to the date of effectiveness
of the Registration Statement.


 


(b) In the event that the over-allotment
option is exercised in full or in part, Purchaser shall purchase up to an additional 225,000 Underwriters Warrants (the “Additional
Underwriters Warrants”), in the same proportion as the amount of the over-allotment option that is exercised, and simultaneously
with such purchase of Additional Underwriters Warrants, as payment in full for the Additional Underwriters Warrants being purchased hereunder,
and at least one (1) business day prior to the closing of all or any portion of the over-allotment option, Purchaser shall pay $1.00 per
Additional Underwriters Warrant, up to an aggregate amount of approximately $225,000, by wire transfer of immediately available funds
or by such other method as may be reasonably acceptable to the Company, to the Trust Account.


 


(c) The closing of the purchase
and sale of the Underwriters Warrants shall take place simultaneously with the closing of the Public Offering (the “Initial Closing
Date”). The closing of the purchase and sale of the Additional Underwriters Warrants, if applicable, shall take place simultaneously
with the closing of all or any portion of the over-allotment option (such closing date, together with the Initial Closing Date, the “Closing
Dates” and each, a “Closing Date”).


 






     


     


    

 


Section 1.03 Terms of the Underwriters Warrants.


 


(a) The Underwriters Warrants
shall have their terms set forth in a Warrant Agreement to be entered into by the Company and a warrant agent, in connection with the
Public Offering (a “Warrant Agreement”).


 


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


 


Article
II.

Representations and Warranties of the Company


 


As a material inducement to
the Purchaser to enter into this Agreement and purchase the Underwriters Warrants, the Company hereby represents and warrants to the Purchaser
(which representations and warranties shall survive the Closing Dates) that:


 


Section 2.01 Organization
and Corporate Power. The Company is a corporation duly organized, validly existing and in good standing under the laws of the State
of Delaware 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.


 


Section 2.02 Authorization;
No Breach.


 


(a) The execution, delivery
and performance of this Agreement and the Underwriters Warrants have been duly authorized by the Company as of the Closing Dates. This
Agreement constitutes a 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 Underwriters Warrants will constitute valid and binding
obligations of the Company, enforceable in accordance with their terms as of the Closing Dates 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).


 


(b) The execution and delivery
by the Company of this Agreement and the Underwriters Warrants, the issuance and sale of the Underwriters Warrants, the issuance of the
Shares upon exercise of the Underwriters 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 Dates (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
capital stock 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 (i) the certificate
of incorporation or the bylaws of the Company (in effect on the date hereof or as may be amended prior to completion of the contemplated
Public Offering), (ii) any material law, statute, rule or regulation to which the Company is subject, or (iii) 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,
except with respect to clauses (ii) and (iii) above, where such default, violation or conflict would not reasonably be expected to have
a material adverse effect on the financial condition, operating results or assets of the Company.


 






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Section 2.03 Title to Securities.
Upon issuance in accordance with, and payment pursuant to, the terms hereof and the Warrant Agreement, the Shares issuable upon exercise
of the Underwriters Warrants will be duly and validly issued, fully paid and nonassessable. Upon issuance in accordance with, and payment
pursuant to, the terms hereof and the Warrant Agreement, the Purchaser will have good title to the Underwriters Warrants and the Shares
issuable upon exercise of such Underwriters 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.


 


Section 2.04 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.


 


Article
III.

Representations and Warranties of the Purchaser


 


As a material inducement to
the Company to enter into this Agreement and issue and sell the Underwriters Warrants to the Purchaser, the Purchaser hereby represents
and warrants to the Company (which representations and warranties shall survive the Closing Dates) that:


 


Section 3.01 Organization
and Requisite Authority. The Purchaser possesses all requisite power and authority necessary to carry out the transactions contemplated
by this Agreement.


 


Section 3.02 Authorization;
No Breach.


 


(a) 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).


 


(b) 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 Dates conflict with or result in a breach by the Purchaser of the terms, conditions or provisions of any agreement,
instrument, order, judgment or decree to which the Purchaser is subject.


 


Section 3.03 Investment
Representations.


 


(a) The Purchaser is acquiring
the Underwriters Warrants and, upon exercise of the Underwriters Warrants, the Shares issuable upon such exercise (collectively, the “Securities”),
for the Purchaser’s own account, for investment purposes only and not with a view towards, or for resale in connection with, any
public sale or distribution thereof in violation of the Securities Act of 1933, as amended (the “Securities Act”).


 


(c) 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.


 


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


 






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(e) 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.


 


(f) 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.


 


(g) 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 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 Securities and Exchange Commission 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 certain 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.


 


(h) 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.


 


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


 


Article
IV.

Conditions of the Purchaser’s Obligations


 


The obligations of the Purchaser
to purchase and pay for the Underwriters Warrants are subject to the fulfillment, on or before the Closing Dates, of each of the following
conditions:


 


Section 4.01 Representations
and Warranties. The representations and warranties of the Company contained in Article II shall be true and correct at and as of the
Closing Dates as though then made.


 


Section 4.02 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 Dates.


 


Section 4.03 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.


 






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Section 4.04 Warrant Agreement
and Registration Rights Agreement. The Company shall have entered into the Warrant Agreement and the Registration Rights Agreement
on terms satisfactory to the Purchaser.


 


Article
V.

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 Dates, of each of the following conditions:


 


Section 5.01Representations
and Warranties. The representations and warranties of the Purchaser contained in Article III shall be true and correct at and as of
the Closing Dates as though then made.


 


Section 5.02 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 Dates.


 


Section 5.03 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.


 


Section 5.04 Registration
Rights Agreement. The Purchaser shall have entered into the Registration Rights Agreement.


 


Article
VI.

Termination


 


This Agreement may be terminated
at any time after September 30, 2021 upon the election by either the Company or the Purchaser upon written notice to the other party,
if the closing of the Public Offering does not occur prior to such date.


 


Article
VII.

Survival of Representations and Warranties


 


All of the representations and warranties contained
herein shall survive the Closing Dates.


 


Article
VIII.

Definitions


 


Terms used but not otherwise
defined in this Agreement shall have the meaning assigned to such terms in the Registration Statement.


 






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Article
IX.

Miscellaneous


 


Section 9.01 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.


 


Section 9.02 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.


 


Section 9.03 Counterparts.
This Agreement may be executed simultaneously in two or more counterparts, none of which need contain the signatures of more than one
party, but all such counterparts taken together shall constitute one and the same agreement.


 


Section 9.04 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.


 


Section 9.05 Governing
Law. This Agreement shall be deemed to be a contract made under the laws of the State of Texas and for all purposes shall be construed
in accordance with the internal laws of the State of Texas.


 


Section 9.06 Amendments.
This letter agreement may not be amended, modified or waived as to any particular provision, except by a written instrument executed by
all 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:
	 	 	 
	 	CENAQ ENERGY CORP.
	 	 	               
	 	By:	  
	 	Name: 	Michael J. Mayell
	 	Title:	President


 


	 	UNDERWRITERS:
	 	 
	 	Imperial Capital, LLC
	 	 	 
	 	By:	 
	 	 	Name:  	Chris Shepard
	 	 	Title: 	Executive Vice President


 


[Signature Page to Underwriters Warrant Purchase
Agreement]