Exhibit
4.4


 


HENNESSY
CAPITAL ACQUISITION CORP. III


 


and


 


CONTINENTAL
STOCK TRANSFER & TRUST COMPANY


 


WARRANT
AGREEMENT


 


Dated
as of [●], 2017


 


THIS
WARRANT AGREEMENT (this “Agreement”), dated as of [●], 2017, is by and between Hennessy Capital
Acquisition Corp. III, a Delaware corporation (the “Company”), and Continental Stock Transfer &
Trust Company, a New York corporation, as warrant agent (the “Warrant Agent”, also referred to herein
as the “Transfer Agent”).


 


WHEREAS,
the Company has entered into that certain Amended and Restated Sponsor Warrants Purchase Agreement dated as of May [●],
2017 (the “Private Placement Warrants Purchase Agreement”), with Hennessy Capital Partners III LLC,
a Delaware limited liability company (the “Sponsor”), pursuant to which the Sponsor will purchase an
aggregate of 8,750,000 warrants simultaneously with the closing of the Offering (as defined below) and up to 825,000 additional
warrants in connection with the exercise of the Over-allotment Option (as defined below), if any, bearing the legend set forth
in Exhibit B hereto (the “Private Placement Warrants”) at a purchase price of $1.00
per Private Placement Warrant; and


 


WHEREAS,
in order to finance the Company’s transaction costs in connection with an intended initial Business Combination (as defined
below), the Sponsor or an affiliate of the Sponsor or certain of the Company’s executive officers and directors may loan
to the Company funds as the Company may require, of which up to $1,500,000 of such loans may be convertible into up to an additional
1,500,000 Private Placement Warrants at a price of $1.00 per warrant;


 


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 Common Stock (as defined below) and one-half of one Public Warrant
(as defined below) (the “Units”) and, in connection therewith, has determined to issue and deliver up
to 13,750,000 warrants (including up to 2,062,500 warrants subject to the Over-allotment Option) to public investors in the Offering
(the “Public Warrants” and, together with the Private Placement Warrants, the “Warrants”).
Each whole Warrant entitles the holder thereof to purchase one share of common stock of the Company, par value $0.0001 per share
(“Common Stock”), for 11.50 per share, subject to adjustment as described herein; and


 


WHEREAS,
the Company has filed with the Securities and Exchange Commission (the “Commission”) a registration
statement on Form S-1, File No. 333-[●] (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 Common Stock included in the Units; and


 


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; and


 


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, 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.


  


2. Warrants.


 


2.1 [Reserved].


 


2.2 Effect
of Countersignature. If a physical certificate is issued, unless and until countersigned by the Warrant Agent pursuant to
this Agreement, a 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 in book-entry
form, 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 “Depository”) (such institution,
with respect to a Warrant in its account, a “Participant”).


 


If
the Depository 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 Depository 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 Depository definitive certificates in physical form evidencing
such Warrants which shall be in the form annexed hereto as Exhibit A.


 


The
certificates, if issued, shall be signed by, or bear the facsimile signature of, the Chairman of the Board, President, Chief Executive
Officer, Chief Financial Officer, Secretary or other principal 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 Holder”)
as the absolute owner of such Warrant and of each Warrant represented thereby, 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 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
Credit Suisse Securities (USA) LLC, as representative of the several underwriters, but in no event shall the 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 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) the Company issues a press release and files with the Commission a current report on Form 8-K
announcing when such separate trading shall begin.


 



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2.5 No
Fractional Warrants Other Than as Part of Units. The Company shall not issue fractional Warrants other than as part of Units,
each of which is comprised of one share of Common Stock and one-half of one Public Warrant. If, upon the detachment of Public
Warrants from 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) the Private Placement Warrants: (i) may
be exercised for cash or on a cashless basis, pursuant to subsection 3.3.1(c) hereof, (ii) may not be transferred,
assigned or sold until thirty (30) days after the completion by the Company of an initial Business Combination (as defined below),
and (iii) shall not be redeemable by the Company; provided, however, that in the case of (ii), the Private
Placement Warrants and any shares of Common Stock held by the members of the Sponsor or any of its Permitted Transferees and issued
upon exercise of the Private Placement Warrants may be transferred by the holders thereof:


 


(a)
in the case of an individual, by gift to such person’s immediate family or to a trust, the beneficiary of which is a member
of such person’s immediate family, an affiliate of such person or to a charitable organization,


 


(b)
to the Company’s officers or directors, any affiliate or family member of any of the Company’s officers or directors
or any member of the Sponsor, or any affiliate of the Sponsor or its members,


 


(c)
in the case of an individual, by virtue of the laws of descent and distribution upon death of such person,


 


(d)
in the case of an individual, pursuant to a qualified domestic relations order,


 


(e)
through private sales or transfers made in connection with the consummation of the Company’s initial Business Combination
at prices no greater than the price at which the Warrants were originally purchased, or


 


(f)
in the event of the Company’s liquidation prior to the completion of the initial Business Combination,


 


(g)
by virtue of the laws of the state of Delaware and the Sponsor’s limited liability company agreement,


 


(h)
in the event that, subsequent to the consummation of the Company’s initial Business Combination, the Company consummates
a merger, stock exchange or other similar transaction that results in all of the holders of the Company’s equity securities
issued in the Offering having the right to exchange their shares of Common Stock for cash, securities or other property; provided, however,
that, in the case of clauses (a) through (e) and (g), these transferees (the “Permitted Transferees”)
enter into a written agreement with the Company agreeing to be bound by the transfer restrictions in this Agreement.


 


3. Terms
and Exercise of Warrants.


 


3.1 Warrant
Price. Each whole Warrant shall, when countersigned by the Warrant Agent, 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 Common Stock stated
therein, at the price of $11.50 per share, 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 mean the price
per share at which shares of Common Stock may be purchased at the time a Warrant is exercised. 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 twenty (20) 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.


 



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3.2 Duration
of Warrants. A Warrant may be exercised only during the period (the “Exercise Period”) commencing
on the later of: (i) the date that is thirty (30) days after the first date on which the Company completes a merger, capital stock
exchange, asset acquisition, stock purchase, reorganization or similar business combination, involving the Company and one or
more businesses (a “Business Combination”), or (ii) the date that is twelve (12) months from the date
of the closing of the Offering, and terminating at 5:00 p.m., New York City time on the earlier to occur of: (x) the date that
is five (5) years after the date on which the Company completes its initial Business Combination, (y) the liquidation of the Company’s
trust account in accordance with the Company’s amended and restated certificate of incorporation, as amended from time to
time, if the Company fails to consummate a Business Combination, or (z) other than with respect to the Private Placement Warrants,
the Redemption Date (as defined below) as provided in Section 6.2 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 subsection
3.3.2 below, with respect to an effective registration statement. Except with respect to the right to receive the Redemption
Price (as defined below) (other than with respect to a Private Placement Warrant) in the event of a redemption (as set forth in Section
6 hereof), each Warrant (other than a Private Placement Warrant in the event of a redemption) not exercised on or before
the Expiration Date shall become 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, when countersigned by the Warrant Agent, may be exercised
by the Registered Holder thereof by surrendering it, at the office of the Warrant Agent, or at the office of its successor as
Warrant Agent, in the Borough of Manhattan, City and State of New York, with the subscription form, as set forth in the Warrant,
duly executed, and by paying in full the Warrant Price for each full share 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 Common Stock, as follows:


 


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


 


(b)
in the event of a redemption pursuant to Section 6 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 Common Stock equal to the quotient obtained by dividing
(x) the product of the number of shares of Common Stock underlying the Warrants, multiplied by the difference between the Warrant
Price and the “Fair Market Value”, as defined in this subsection 3.3.1(b) by (y) the Fair Market
Value. Solely for purposes of this subsection 3.3.1(b) and Section 6.3, the “Fair Market Value”
shall mean the average last sale price of the Common Stock for the ten (10) trading days ending on the third trading day prior
to the date on which the notice of redemption is sent to the holders of the Warrants, pursuant to Section 6hereof;


 


(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 Common Stock equal to the quotient obtained by dividing
(x) the product of the number of shares of Common Stock underlying the Warrants, multiplied by the difference between the Warrant
Price and the “Fair Market Value”, as defined in this subsection 3.3.1(c), by (y) the Fair Market Value.
Solely for purposes of this subsection 3.3.1(c), the “Fair Market Value” shall mean the average last sale
price of the 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; or


 


(d)
as provided in Section 7.4 hereof.


 



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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 subsection 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 registration statement under the Securities Act with respect to the shares of Common Stock underlying the Public
Warrants is then effective and a prospectus relating thereto is current, subject to the Company’s satisfying its obligations
under Section 7.4. No Warrant shall be exercisable and the Company shall not be obligated to issue shares of Common
Stock upon exercise of a Warrant unless the Common Stock issuable upon such Warrant exercise has 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. In the event that the conditions in the two immediately preceding sentences are not satisfied with respect to
a Warrant, the holder of such Warrant shall not be entitled to exercise such Warrant and such Warrant may have no value and expire
worthless, in which case the purchaser of a Unit containing such Public Warrants shall have paid the full purchase price for the
Unit solely for the shares of Common Stock underlying such Unit. 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 Warrant
would be entitled, upon the exercise of such Warrant, 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.


 


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 subsection 3.3.5; however, no holder of a Warrant shall be subject to this subsection
3.3.5 unless he, she or it makes such election. If the election is made by a holder, the Warrant Agent shall not effect
the exercise of the holder’s Warrant, and 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 4.9% or 9.8% (as specified by the holder) (the “Maximum Percentage”)
of the shares of Common Stock outstanding immediately after giving effect to such exercise. For purposes of the foregoing sentence,
the aggregate number of shares of Common Stock beneficially owned by such person and its affiliates shall include the number of
shares 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 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 Common Stock, the holder
may rely on the number of outstanding shares 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 Continental Stock Transfer
& Trust Company (the “Transfer Agent”) setting forth the number of shares of Common Stock outstanding. For any
reason at any time, upon the written request of the holder of the Warrant, the Company shall, within two (2) Business Days, confirm
orally and in writing to such holder the number of shares of Common Stock then outstanding. In any case, the number of outstanding
shares 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 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.


 



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4. Adjustments.


 


4.1 Stock
Dividends.


 


4.1.1 Split-Ups.
If after the date hereof, and subject to the provisions of Section 4.6 below, the number of outstanding shares
of Common Stock is increased by a stock dividend payable in shares of Common Stock, or by a split-up of shares of Common Stock
or other similar event, then, on the effective date of such stock dividend, split-up or similar event, the number of shares of
Common Stock issuable on exercise of each Warrant shall be increased in proportion to such increase in the outstanding shares
of Common Stock. A rights offering to holders of the Common Stock entitling holders to purchase shares of Common Stock at a price
less than the “Fair Market Value” (as defined below) shall be deemed a stock dividend of a number of shares of Common
Stock equal to the product of (i) the number of shares of Common Stock actually sold in such rights offering (or issuable under
any other equity securities sold in such rights offering that are convertible into or exercisable for the Common Stock) multiplied
by (ii) one (1) minus the quotient of (x) the price per share of Common Stock paid in such rights offering divided by (y) the
Fair Market Value. For purposes of this subsection 4.1.1, (i) if the rights offering is for securities convertible
into or exercisable for Common Stock, in determining the price payable for 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 and (ii) “Fair
Market Value” means the volume weighted average price of the Common Stock as reported during the ten (10) trading day period
ending on the trading day prior to the first date on which the shares of Common Stock trade on the applicable exchange or in the
applicable market, regular way, without the right to receive such rights.


 


4.1.2 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 Common Stock on account of such shares of Common Stock (or other shares
of the Company’s capital stock into which the Warrants are convertible), other than (a) as described in subsection
4.1.1 above, (b) Ordinary Cash Dividends (as defined below), (c) to satisfy the redemption rights of the holders of the
Common Stock in connection with a proposed initial Business Combination, (d) to satisfy the redemption rights of the holders of
Common Stock in connection with a stockholder vote to amend the Company’s amended and restated certificate of incorporation
to modify the substance or timing of the Company’s obligation to redeem 100% of the public shares of Common Stock if the
Company does not complete the Business Combination within the period set forth in the Company’s amended and restated certificate
of incorporation, or (e) in connection with the redemption of public shares of Common Stock upon the failure of the Company to
complete its initial Business Combination 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 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 subsection 4.1.2, “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 Common Stock during the 365-day period ending on the date of declaration of such dividend or distribution (as adjusted
to appropriately reflect any of the events referred to in other subsections of 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) does not exceed $0.50 (being 5% of the offering price of the Units in the Offering).


 


4.2 Aggregation
of Shares. If after the date hereof, and subject to the provisions of Section 4.6 hereof, the number of outstanding
shares of Common Stock is decreased by a consolidation, combination, reverse stock split or reclassification of shares 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 Common Stock issuable on exercise of each Warrant shall be decreased in proportion to
such decrease in outstanding shares of Common Stock.


 



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4.3 Adjustments
in Exercise Price. Whenever the number of shares of Common Stock purchasable upon the exercise of the Warrants is adjusted,
as provided in subsection 4.1.1 or Section 4.2 above, 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 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 subsections 4.1.1 or 4.1.2 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 entity or conversion of the Company into another entity (other than a consolidation or merger 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 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) 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” ) and the Company shall not enter into any such consolidation,
merger, sale or conveyance unless the successor or purchasing entity, as the case may be, shall execute an amendment hereto with
the Warrant Agent providing for delivery of such Alternative Issuance; provided, however, that (i) if
the holders of the 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 consolidation or merger, 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 Common Stock in such consolidation or merger 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 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 initial Business Combination 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 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 provided for in this Section
4; provided, further, that if less than 70% of the consideration receivable by the holders of the
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 share of Common Stock shall be the volume weighted
average price of the 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 U.S. Treasury rate for a period equal to the remaining term of the Warrant. “Per
Share Consideration” means (i) if the consideration paid to holders of the Common Stock consists exclusively of cash, the
amount of such cash per share of Common Stock, and (ii) in all other cases, the volume weighted average price of the 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 Common Stock covered by subsection 4.1.1,
then such adjustment shall be made pursuant to subsection 4.1.1 or Sections 4.2, 4.3 and
this Section 4.4. The provisions of this Section 4.4 shall similarly apply to successive reclassifications,
reorganizations, mergers or consolidations, sales or other transfers. In no event will the Warrant Price be reduced to less than
the par value per share issuable upon exercise of the Warrant.


 



    	 	7	 



     


    

 





4.5 Notices
of Changes in Warrant. Upon every adjustment of the Warrant Price or the number of shares 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 increase or decrease, if any, in the number of shares 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 or 4.4,
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. 


 


4.6 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 Warrant would be entitled, upon the exercise of such Warrant, 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.


 


4.7 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.


 


4.8 Other
Events. In case any event shall occur affecting the Company as to which none of the provisions of preceding subsections of
this Section 4 are strictly applicable, but which would require an adjustment to the terms of the Warrants in
order to (i) avoid an adverse impact on the Warrants and (ii) effectuate the intent and purpose of this Section 4,
then, in each such case, the Company shall appoint a firm of independent public accountants, investment banking or other appraisal
firm of recognized national standing, which shall give its opinion as to whether or not any adjustment to the rights represented
by the Warrants is necessary to effectuate the intent and purpose of this Section 4 and, if they determine that
an adjustment is necessary, the terms of such adjustment. The Company shall adjust the terms of the Warrants in a manner that
is consistent with any adjustment recommended in such opinion.


 


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, in the case of certificate warrants, 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 certificate warrants, the Warrants so cancelled shall be delivered by the Warrant Agent to the Company from time to time upon
request.


 



    	 	8	 



     


    

 





5.2 Procedure
for Surrender of Warrants. Warrants may be surrendered to the Warrant Agent, together with a written request for exchange
or transfer, 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 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.


 


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.
Subject to Section 6.4 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 of the Warrant Agent, upon notice
to the Registered Holders of the Warrants, as described in Section 6.2 below, at the price of $0.01 per Warrant
(the “Redemption Price”), provided that the last sales price of the Common Stock reported has been at
least $18.00 per share (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 Business Day prior to the date on which notice
of the redemption is given and provided that there is an effective registration statement covering the shares of Common Stock
issuable upon exercise of the Warrants, and a current prospectus relating thereto, available throughout the 30-day Redemption
Period (as defined in Section 6.2 below) or the Company has elected to require the exercise of the Warrants
on a “cashless basis” pursuant to subsection 3.3.1; provided, however, that if and when the Public Warrants
become redeemable by the Company, the Company may not exercise such redemption right if the issuance of shares of Common Stock
upon exercise of the Public Warrants is not exempt from registration or qualification under applicable state blue sky laws or
the Company is unable to effect such registration or qualification.


 


6.2 Date
Fixed for, and Notice of, Redemption. In the event that the Company elects to redeem all of the Warrants, 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.


 


6.3 Exercise
After Notice of Redemption. The Warrants may be exercised, for cash (or on a “cashless basis” in accordance with subsection
3.3.1(b) of this Agreement) at any time after notice of redemption shall have been given by the Company pursuant to Section
6.2 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 subsection 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, including the “Fair Market Value” (as such term is defined in subsection 3.3.1(b) hereof)
in such case. 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.


 



    	 	9	 



     


    

 





6.4 Exclusion
of Private Placement Warrants. The Company agrees that the redemption rights provided in this Section 6 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 Sponsor or its Permitted Transferees. However, once such Private Placement Warrants are transferred (other
than to Permitted Transferees under Section 2.6), the Company may redeem the Private Placement Warrants, provided
that the criteria for redemption are met, including the opportunity of the holder of such Private Placement Warrants to exercise
the Private Placement Warrants prior to redemption pursuant to Section 6.3. 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.


  


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


 


7.1 No
Rights as Stockholder. 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 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 Common Stock; Cashless Exercise at Company’s Option.


 


7.4.1 Registration
of the Common Stock. The Company agrees that as soon as practicable, but in no event later than fifteen (15) Business Days
after the closing of its initial Business Combination, it shall use its best 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 best efforts to cause the same to become effective and to maintain the effectiveness of such registration
statement, and a current prospectus relating thereto, until the expiration of the Warrants in accordance with the provisions of
this Agreement. If any such registration statement has not been declared effective by the 60th Business Day following the closing
of the Business Combination, holders of the Warrants shall have the right, during the period beginning on the 61st Business Day
after the closing of the Business Combination 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 shares
of Common Stock issuable upon exercise of the Warrants, to exercise such Warrants on a “cashless basis,” by exchanging
the Warrants (in accordance with Section 3(a)(9) of the Securities Act (or any successor rule) or another exemption) for that
number of shares of Common Stock equal to the quotient obtained by dividing (x) the product of the number of shares of Common
Stock underlying the Warrants, multiplied by the difference between the Warrant Price and the “Fair Market Value”
(as defined below) by (y) the Fair Market Value. Solely for purposes of this subsection 7.4.1, “Fair Market
Value” shall mean the volume weighted average price of the 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 subsection
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 subsection 7.4.2, for the avoidance of any doubt, unless and until
all of the Warrants have been exercised, the Company shall continue to be obligated to comply with its registration obligations
under the first three sentences of this subsection 7.4.1.


 



    	 	10	 



     


    

 





7.4.2 Cashless
Exercise at Company’s Option. If the 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 rule), 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 rule) as described in subsection 7.4.1 and (ii) in the event the Company so elects, the Company
shall not be required to file or maintain in effect a registration statement for the registration, under the Securities Act, of
the Common Stock issuable upon exercise of the Warrants, notwithstanding anything in this Agreement to the contrary. If the Company
does not elect at the time of exercise to require a holder of Public Warrants who exercises Public Warrants to exercise such Public
Warrants on a “cashless basis,” it agrees to use its best efforts to register or qualify for sale the Common Stock
issuable upon exercise of the Public Warrant under the blue sky laws of the state of residence in those states in which the Warrants
were initially offered by the Company of the exercising Public Warrant holder 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
shall not be obligated to pay any transfer taxes in respect of the Warrants or such shares of Common Stock.


 


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 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 Transfer Agent for the Common Stock not later than the effective date of any such appointment.


 


8.2.3 Merger
or Consolidation of Warrant Agent. Any corporation into which the Warrant Agent may be merged or with which it may be consolidated
or any corporation 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.


 



    	 	11	 



     


    

 





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, Chief Executive Officer or Chairman of the Board 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.


 


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 the Warrant Agent 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.


 



    	 	12	 



     


    

 





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 so 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, postage prepaid, addressed (until another address
is filed in writing by the Company with the Warrant Agent), as follows:


 


Hennessy
Capital Acquisition Corp. III


3485
N. Pines Way, Suite 110


Wilson,
Wyoming 83014


Attention:
Daniel J. Hennessy


 


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 so 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, postage prepaid, addressed (until another address
is filed in writing by the Warrant Agent with the Company), as follows:


 


Continental
Stock Transfer & Trust Company


1
State Street Plaza, 30th Floor


New
York, NY 10004


Attention:
Compliance Department


 


9.3 Applicable
Law. The validity, interpretation, and performance of this Agreement and of the Warrants shall be governed in all respects
by the laws of the State of New York, without giving effect to conflicts of law principles that would result in the application
of the substantive laws of another jurisdiction. The Company hereby agrees that any action, proceeding or claim against it arising
out of or relating in any way to this Agreement shall be brought and enforced in the courts of the State of New York or the United
States District Court for the Southern District of New York, and irrevocably submits to such jurisdiction, which jurisdiction
shall be exclusive. The Company hereby waives any objection to such exclusive jurisdiction and that such courts represent an inconvenient
forum.


 


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.
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.


 


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.


 


9.8 Amendments.
This Agreement may be amended by the parties hereto without the consent of any Registered Holder (i) for the purpose of curing
any ambiguity, or curing, correcting or supplementing any defective provision contained herein or adding or changing any other
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 interest of the Registered Holders, and (ii) to provide for the delivery
of Alternative Issuance pursuant to Section 4.4. All other modifications or amendments, including any amendment to increase the
Warrant Price or shorten the Exercise Period and any amendment to the terms of only the Private Placement Warrants, shall require
the vote or written consent of the Registered Holders of 65% of the then outstanding Public Warrants. 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.


 



    	 	13	 



     


    

 





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.


 


Exhibit
A — Form of Warrant Certificate


Exhibit
B Legend — Sponsor’s Warrants


 



    	 	14	 



     


    

 


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


 


	 	HENNESSY
    CAPITAL ACQUISITION CORP. III
	 	 	 	 
	 	By	 
	 	 	Name:	Daniel
    J. Hennessy
	 	 	Title:	Chief
    Executive Officer


 


	 	CONTINENTAL
    STOCK TRANSFER & TRUST

    COMPANY, as Warrant Agent
	 	 	 	 
	 	By	
	 	 	Name:	Henry
                                         Farrel

        

	 	 	Title:	Vice
    President


 


[Signature
Page to Warrant Agreement]


 



     


     


    




 


EXHIBIT
A


 


[Form
of Warrant Certificate]


 


[FACE]


 


Number


 


Warrants


 


THIS
WARRANT SHALL BE VOID IF NOT EXERCISED PRIOR TO


THE
EXPIRATION OF THE EXERCISE PERIOD PROVIDED FOR


IN
THE WARRANT AGREEMENT DESCRIBED BELOW


 


HENNESSY
CAPITAL ACQUISITION CORP. III


Incorporated
Under the Laws of the State of Delaware


 


CUSIP
42588L 113


 


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 Common Stock, $.0001
par value (“Common Stock”), of Hennessy Capital Acquisition Corp. III, a Delaware corporation (the “Company”).
Each whole Warrant entitles the holder, upon exercise during the period set forth in the Warrant Agreement referred to below,
to receive from the Company that number of fully paid and non-assessable shares of 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 Common Stock. No fractional shares will
be issued upon exercise of any Warrant. If, upon the exercise of Warrants, a holder would be entitled to receive a fractional
interest in a share of Common Stock, the Company will, upon exercise, round down to the nearest whole number the number of shares
of Common Stock to be issued to the Warrant holder. The number of shares of Common Stock issuable upon exercise of the Warrants
is subject to adjustment upon the occurrence of certain events set forth in the Warrant Agreement.


 


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


 


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


 


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


  


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


 


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


 


	 	HENNESSY
    CAPITAL ACQUISITION CORP. II
	 	 	 	 
	 	By:	 
	 	 	Name:	Daniel
    J. Hennessy
	 	 	Title: 	Chief
    Executive Officer


 



     


     


    

 





[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 Common Stock and are issued or to be issued pursuant to a Warrant Agreement dated as of ______, 2017 (the
“Warrant Agreement”), duly executed and delivered by the Company to Continental Stock Transfer &
Trust Company, a New York corporation, as warrant agent (the “Warrant Agent”), which Warrant Agreement
is hereby incorporated by reference in and made a part of this instrument and is hereby referred to for a description of the rights,
limitation of rights, obligations, duties and immunities thereunder of the Warrant Agent, the Company and the holders (the words
“holders” or “holder” meaning the Registered Holders or Registered Holder)
of the Warrants. A copy of the Warrant Agreement may be obtained by the holder hereof upon written request to the Company. Defined
terms used in this Warrant Certificate but not defined herein shall have the meanings given to them in the Warrant Agreement.


 


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


 


Notwithstanding
anything else in this Warrant Certificate or the Warrant Agreement, no Warrant may be exercised unless at the time of exercise
(i) a registration statement covering the shares of Common Stock to be issued upon exercise is effective under the Securities
Act and (ii) a prospectus thereunder relating to the shares of 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 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 Common Stock, the Company shall, upon exercise,
round down to the nearest whole number of shares of Common Stock to be issued to the holder of the Warrant.


 


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


 


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


  


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


 



     


     


    

 





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 Common
Stock and herewith tenders payment for such shares of Common Stock to the order of Hennessy Capital Acquisition Corp. III (the
“Company”) in the amount of $ in accordance with the terms hereof. The undersigned requests that a certificate
for such shares of Common Stock be registered in the name of                         ,
whose address is and that such shares of Common Stock be delivered to whose address is . If said number of shares of Common Stock
is less than all of the shares of Common Stock purchasable hereunder, the undersigned requests that a new Warrant Certificate
representing the remaining balance of such shares of 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 of the Warrant
Agreement and the Company has required cashless exercise pursuant to Section 6.3 of the Warrant Agreement, the
number of shares of Common Stock that this Warrant is exercisable for shall be determined in accordance with subsection
3.3.1(b) and Section 6.3 of the Warrant Agreement.


 


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


 


In
the event that the Warrant is to be exercised on a “cashless” basis pursuant to Section 7.4 of the
Warrant Agreement, the number of shares of 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 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 Common Stock. If said number of shares is less than all of the shares
of 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 Common Stock be registered in the name of                      ,
whose address is                         ,
and that such Warrant Certificate be delivered to                   ,
whose address is                   .


 


 


[Signature
                                         Page Follows]


  



     

     


    

 


	Date:                ,
                                         20
	 	 	
	 	 	 	 
		(Signature)	 	(Signature)
	 	 	 	 
	 	 	 	
		(Address)	 	(Address)
	 	 	 	 
	 	 	 	 
		(Tax Identification Number)	 	(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 S.E.C. RULE 17Ad-15 (OR ANY SUCCESSOR
RULE)).


 



     


     


    

 


EXHIBIT
B


 


LEGEND


 


THE
SECURITIES REPRESENTED BY THIS CERTIFICATE 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 AGREEMENTS BY AND AMONG HENNESSY CAPITAL ACQUISITION CORP. II
(THE “COMPANY”), HENNESSY CAPITAL PARTNERS III 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 INITIAL BUSINESS COMBINATION (AS DEFINED IN SECTION 3 OF 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 BY THIS CERTIFICATE 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.