Exhibit 10.4


 


REGISTRATION RIGHTS AGREEMENT


 


THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”),
dated as of [        ], 2021, is made and entered into by and among Acropolis Infrastructure Acquisition Corp., a Delaware corporation (the “Company”),
Acropolis Infrastructure Acquisition Sponsor, L.P., a Cayman Islands exempted limited partnership (the “Sponsor”),
and the undersigned parties listed under Holder on the signature pages hereto (each such party, together with the Sponsor and any
person or entity who hereafter becomes a party to this Agreement pursuant to Section 5.2 of this Agreement, a “Holder”
and collectively the “Holders”).


 


RECITALS


 


WHEREAS, the Sponsor and the Company’s
initial stockholders own an aggregate of 8,625,000 shares (the “Founder Shares”) of the Company’s Class B
common stock, par value $0.0001 per share, of the Company (the “Class B Common Stock”), up to 1,125,000
of which are subject to forfeiture to the Company for no consideration depending on the extent to which the underwriters of the Company’s
initial public offering exercise their over-allotment option;


 


WHEREAS, the Founder Shares will automatically
convert into Class A common stock, par value $0.0001 per share, of the Company (the “Common Stock”) at
the time of the Company’s initial business combination on a one-for-one basis, subject to adjustment, on the terms and conditions
provided in the Company’s amended and restated certificate of incorporation;


 


WHEREAS, on [    ], 2021, the Company and the
Sponsor entered into that certain Private Placement Warrants Purchase Agreement (the “Private Placement Warrants Purchase
Agreement”), pursuant to which the Sponsor agreed to purchase 5,235,000 warrants (or up to 5,835,000 warrants if the over-allotment
option in connection with the Company’s initial public offering is exercised in full) (the “Private Placement Warrants”),
in a private placement transaction occurring simultaneously with the closing of the Company’s initial public offering (and the closing
over the over-allotment option, if applicable); and


 


WHEREAS, in order to finance the Company’s
transaction costs in connection with its search for and consummation of an initial Business Combination (as defined below) the Sponsor
or affiliates of the Sponsor or certain of the Company’s officers and directors may loan to the Company funds as the Company may
require, of which up to $2,000,000 of such loans may be convertible into warrants (“Working Capital Warrants”)
at a price of $1.50 per warrant; and


 


WHEREAS, the Company and the Holders desire
to enter into this Agreement, pursuant to which the Company shall grant the Holders certain registration rights with respect to certain
securities of the Company, as set forth in this Agreement.


 






     


     


    

 


NOW, THEREFORE, in consideration of the representations,
covenants and agreements contained herein, and certain other good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, the parties hereto, intending to be legally bound, hereby agree as follows:


 


ARTICLE I

DEFINITIONS


 


1.1.           Definitions.
The terms defined in this Article I shall, for all purposes of this Agreement, have the respective meanings set forth below:


 


“Adverse Disclosure” shall
mean any public disclosure of material non-public information, which disclosure, in the good faith judgment of the Chief Executive Officer
or principal financial officer of the Company, after consultation with counsel to the Company, (i) would be required to be made in
any Registration Statement or Prospectus in order for the applicable Registration Statement or Prospectus not to contain any untrue statement
of a material fact or omit to state a material fact necessary to make the statements contained therein (in the case of any prospectus
and any preliminary prospectus, in the light of the circumstances under which they were made) not misleading, (ii) would not be required
to be made at such time if the Registration Statement were not being filed, and (iii) the Company has a bona fide business purpose
for not making such information public.


 


“Agreement” shall have
the meaning given in the Preamble.


 


“Board” shall mean the
Board of Directors of the Company.


 


“Business Combination”
shall mean any merger, consolidation, capital stock exchange, asset acquisition, stock purchase, reorganization or other similar business
combination with one or more businesses or entities, involving the Company.


 


“Business Day” means any
day other than a Saturday or Sunday, that is neither a legal holiday nor a day on which banking institutions are generally authorized
or required by law or regulation to close in the City of New York, New York.


 


“Class B Common Stock”
shall have the meaning given in the Recitals hereto.


 


“Commission” shall mean
the Securities and Exchange Commission.


 


“Common Stock” shall have
the meaning given in the Recitals hereto.


 


“Company” shall have the
meaning given in the Preamble.


 


“Demand Registration” shall
have the meaning given in subsection 2.1.1.


 


“Demanding Holder” shall
have the meaning given in subsection 2.1.1.


 






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“Exchange Act” shall mean
the Securities Exchange Act of 1934, as it may be amended from time to time.


 


“Form S-1” shall have
the meaning given in subsection 2.1.1.


 


“Form S-3” shall have
the meaning given in subsection 2.3.


 


“Founder Shares” shall
have the meaning given in the Recitals hereto and shall be deemed to include the shares of Common Stock issuable upon conversion thereof.


 


“Founder Shares Lock-up Period”
shall mean, with respect to the Founder Shares, the period ending on the earlier of (A) one year after the date of the consummation
of the Company’s initial Business Combination or (B) subsequent to the Company’s initial Business Combination, (i) the
date on which the last sale price of the Common Stock equals or exceeds $12.00 per share (as adjusted for stock splits, stock dividends,
reorganizations, recapitalizations and the like) for any 20 trading days within any 30-trading day period commencing at least 150 days
after the consummation of the Company’s initial Business Combination or (ii) the date on which the Company consummates a liquidation,
merger, consolidation, capital stock exchange, reorganization or other similar transaction which results in all of the Company’s
stockholders having the right to exchange their shares of Common Stock for cash, securities or other property.


 


“Holders” shall have the
meaning given in the Preamble.


 


“Insider Letter” shall
mean that certain letter agreement, dated as of [    ], 2021, by and among the Company, the Sponsor and each of the Company’s officers,
directors and director nominees.


 


“Maximum Number of Securities”
shall have the meaning given in subsection 2.1.4.


 


“Misstatement” shall mean
an untrue statement of a material fact or an omission to state a material fact required to be stated in a Registration Statement or Prospectus,
or necessary to make the statements in a Registration Statement or Prospectus (in the case of a Prospectus, in the light of the circumstances
under which they were made) not misleading.


 


“Permitted Transferees”
shall mean any person or entity to whom a Holder of Registrable Securities is permitted to transfer such Registrable Securities prior
to the expiration of the Founder Shares Lock-up Period, Private Placement Lock-up Period or any other lock-up period, as the case may
be, and pursuant to the Insider Letter, the Private Placement Warrants Purchase Agreement, this Agreement and any other applicable agreement
between such Holder and the Company, in each case for so long as such agreements remain in effect, and to any transferee thereafter.


 


“Piggyback Registration”
shall have the meaning given in subsection 2.2.1.


 



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“Private Placement Lock-up Period”
shall mean, with respect to Private Placement Warrants that are held by the initial purchasers of such Private Placement Warrants or their
Permitted Transferees, and any shares of Common Stock issued or issuable upon the exercise or conversion of the Private Placement Warrants
that are held by the initial purchasers of the Private Placement Warrants or their Permitted Transferees, the period ending 30 days after
the completion of the Company’s initial Business Combination.


 


“Private Placement Warrants”
shall have the meaning given in the Recitals hereto.


 


“Private Placement Warrants Purchase
Agreement” shall have the meaning given in the Recitals hereto.


 


“Prospectus” shall mean
the prospectus included in any Registration Statement, as supplemented by any and all prospectus supplements and as amended by any and
all post-effective amendments and including all material incorporated by reference in such prospectus.


 


“Prospectus Date” shall
mean the date of the final prospectus filed with the Commission and relating to the Company’s initial public offering.


 


“Registrable Security”
shall mean (a) the Founder Shares and the shares of Common Stock issued or issuable upon the conversion of any Founder Shares, (b) the
Private Placement Warrants (including any shares of Common Stock issued or issuable upon the exercise of any such Private Placement Warrants),
(c) any outstanding share of Common Stock or any other equity security (including, without limitation, the shares of Common Stock
issued or issuable upon the exercise of any other equity security, units comprising shares of Common Stock and warrants, or warrants)
of the Company held by a Holder from time to time, (d) any equity securities (including the shares of Common Stock issued or issuable
upon the exercise of any such equity security) of the Company issuable upon conversion of any working capital loans in an amount of up
to $2,000,000 made to the Company by a Holder (including the Working Capital Warrants and any shares of Common Stock issuable upon the
exercise of the Working Capital Warrants) and (e) any other equity security of the Company issued or issuable with respect to any
such share of Common Stock by way of a stock dividend or stock split or in connection with a combination of shares, recapitalization,
merger, consolidation or reorganization; provided, however, that, as to any particular Registrable Security, such securities
shall cease to be Registrable Securities when: (A) a Registration Statement with respect to the sale of such securities shall have
become effective under the Securities Act and such securities shall have been sold, transferred, disposed of or exchanged in accordance
with such Registration Statement; (B) such securities shall have been otherwise transferred, new certificates for such securities
not bearing a legend restricting further transfer shall have been delivered by the Company and subsequent public distribution of such
securities shall not require registration under the Securities Act; (C) such securities shall have ceased to be outstanding; (D) such
securities may be sold without registration pursuant to Rule 144 promulgated under the Securities Act (or any successor rule promulgated
thereafter by the Commission) (but with no volume or other restrictions or limitations); or (E) such securities have been sold to,
or through, a broker, dealer or underwriter in a public distribution or other public securities transaction.


 






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“Registration” shall mean
a registration effected by preparing and filing a registration statement or similar document in compliance with the requirements of the
Securities Act, and the applicable rules and regulations promulgated thereunder, and such registration statement becoming effective.


 


“Registration Expenses”
shall mean the out-of-pocket expenses of a Registration, including, without limitation, the following:


 


(A)           all
registration and filing fees (including fees with respect to filings required to be made with the Financial Industry Regulatory Authority, Inc.)
and any securities exchange on which the shares of Common Stock are then listed;


 


(B)            fees
and expenses of compliance with securities or blue sky laws (including reasonable fees and disbursements of counsel for the Underwriters
in connection with blue sky qualifications of Registrable Securities);


 


(C)            printing,
messenger, telephone and delivery expenses;


 


(D)           reasonable
fees and disbursements of counsel for the Company;


 


(E)            reasonable
fees and disbursements of all independent registered public accountants of the Company incurred specifically in connection with such Registration;
and


 


(F)            reasonable
fees and expenses of one (1) legal counsel selected by the majority-in-interest of the Demanding Holders initiating a Demand Registration
to be registered for offer and sale in the applicable Registration.


 


“Registration Statement”
shall mean any registration statement that covers the Registrable Securities pursuant to the provisions of this Agreement, including the
Prospectus included in such registration statement, amendments (including post-effective amendments) and supplements to such registration
statement, and all exhibits to and all material incorporated by reference in such registration statement.


 


“Requesting Holder” shall
have the meaning given in subsection 2.1.1.


 


“Securities Act” shall
mean the Securities Act of 1933, as amended from time to time.


 


“Sponsor” shall have the
meaning given in the Preamble hereto.


 


“Underwriter” shall mean
a securities dealer who purchases any Registrable Securities as principal in an Underwritten Offering and not as part of such dealer’s
market-making activities.


 






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“Underwritten Registration”
or “Underwritten Offering” shall mean a Registration in which securities of the Company are sold to an Underwriter
in a firm commitment underwriting for distribution to the public.


 


“Working Capital Warrants”
shall have the meaning given in the Recitals hereto.


 


ARTICLE II

REGISTRATIONS


 


2.1.           Demand
Registration.


 


2.1.1            Request
for Registration. Subject to the provisions of subsection 2.1.4 and Section 2.4 hereof, at any time and from time
to time on or after the date the Company consummates the Business Combination, the Holders of at least fifteen percent (15%) in interest
of the then-outstanding number of Registrable Securities (the “Demanding Holders”) may make a written demand
for Registration of all or part of their Registrable Securities, which written demand shall describe the amount and type of securities
to be included in such Registration and the intended method(s) of distribution thereof (such written demand a “Demand
Registration”). The Company shall, within ten (10) Business Days of the Company’s receipt of the Demand Registration,
notify, in writing, all other Holders of Registrable Securities of such demand, and each Holder of Registrable Securities who thereafter
wishes to include all or a portion of such Holder’s Registrable Securities in a Registration pursuant to a Demand Registration (each
such Holder that includes all or a portion of such Holder’s Registrable Securities in such Registration, a “Requesting
Holder”) shall so notify the Company, in writing, within five (5) Business Days after the receipt by the Holder of
the notice from the Company. Upon receipt by the Company of any such written notification from a Requesting Holder(s) to the Company,
such Requesting Holder(s) shall be entitled to have their Registrable Securities included in a Registration pursuant to a Demand
Registration and the Company shall effect, as soon thereafter as practicable, but not more than forty five (45) days immediately after
the Company’s receipt of the Demand Registration, the Registration of all Registrable Securities requested by the Demanding Holders
and Requesting Holders pursuant to such Demand Registration. Under no circumstances shall the Company be obligated to effect more than
an aggregate of three (3) Registrations pursuant to a Demand Registration under this subsection 2.1.1 with respect to any
or all Registrable Securities; provided, however, that a Registration shall not be counted for such purposes unless a Form S-1
or any similar long-form registration statement that may be available at such time (“Form S-1”) has become
effective and all of the Registrable Securities requested by the Requesting Holders to be registered on behalf of the Requesting Holders
in such Form S-1 Registration have been sold, in accordance with Section 3.1 of this Agreement. Notwithstanding the foregoing,
Acropolis Infrastructure Acquisition Sponsor, L.P. may not exercise its demand registration rights after five (5) years from the
pricing date of the Company’s initial public offering and may not exercise its demand rights on more than one occasion.


 






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2.1.2            Effective
Registration. Notwithstanding the provisions of subsection 2.1.1 above or any other part of this Agreement, a Registration
pursuant to a Demand Registration shall not count as a Registration unless and until (i) the Registration Statement filed with the
Commission with respect to a Registration pursuant to a Demand Registration has been declared effective by the Commission and (ii) the
Company has complied with all of its obligations under this Agreement with respect thereto; provided, further, that if,
after such Registration Statement has been declared effective, an offering of Registrable Securities in a Registration pursuant to a Demand
Registration is subsequently interfered with by any stop order or injunction of the Commission, federal or state court or any other governmental
agency the Registration Statement with respect to such Registration shall be deemed not to have been declared effective, unless and until,
(i) such stop order or injunction is removed, rescinded or otherwise terminated, and (ii) a majority-in-interest of the Demanding
Holders initiating such Demand Registration thereafter affirmatively elect to continue with such Registration and accordingly notify the
Company in writing, but in no event later than five (5) days, of such election; and provided, further, that the Company
shall not be obligated or required to file another Registration Statement until the Registration Statement that has been previously filed
with respect to a Registration pursuant to a Demand Registration becomes effective or is subsequently terminated.


 


2.1.3            Underwritten
Offering. Subject to the provisions of subsection 2.1.4 and Section 2.4 hereof, if a majority-in-interest of the
Demanding Holders so advise the Company as part of their Demand Registration that the offering of the Registrable Securities pursuant
to such Demand Registration shall be in the form of an Underwritten Offering, then the right of such Demanding Holder or Requesting Holder
(if any) to include its Registrable Securities in such Registration shall be conditioned upon such Holder’s participation in such
Underwritten Offering and the inclusion of such Holder’s Registrable Securities in such Underwritten Offering to the extent provided
herein. All such Holders proposing to distribute their Registrable Securities through an Underwritten Offering under this subsection
2.1.3 shall enter into an underwriting agreement in customary form with the Underwriter(s) selected for such Underwritten Offering
by the majority-in-interest of the Demanding Holders initiating the Demand Registration.


 






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2.1.4            Reduction
of Underwritten Offering. If the managing Underwriter or Underwriters in an Underwritten Registration pursuant to a Demand Registration,
in good faith, advises the Company, the Demanding Holders and the Requesting Holders (if any) in writing that the dollar amount or number
of Registrable Securities that the Demanding Holders and the Requesting Holders (if any) desire to sell, taken together with all other
shares of Common Stock or other equity securities that the Company desires to sell and shares of the Common Stock, if any, as to which
a Registration has been requested pursuant to separate written contractual piggy-back registration rights held by any other stockholders
who desire to sell, exceeds the maximum dollar amount or maximum number of equity securities that can be sold in the Underwritten Offering
without adversely affecting the proposed offering price, the timing, the distribution method, or the probability of success of such offering
(such maximum dollar amount or maximum number of such securities, as applicable, the “Maximum Number of Securities”),
then the Company shall include in such Underwritten Offering, as follows: (i) first, the Registrable Securities of the Demanding
Holders and the Requesting Holders (if any) (pro rata based on the respective number of Registrable Securities that each Demanding Holder
and Requesting Holder (if any) has requested be included in such Underwritten Registration and the aggregate number of Registrable Securities
that the Demanding Holders and Requesting Holders have requested be included in such Underwritten Registration) that can be sold without
exceeding the Maximum Number of Securities; (ii) second, to the extent that the Maximum Number of Securities has not been reached
under the foregoing clause (i), the Registrable Securities of Holders exercising their rights to register their Registrable Securities
pursuant to subsection 2.2.1 hereof (pro rata based on the respective number of Registrable Securities that each Holder has so
requested), without exceeding the Maximum Number of Securities; (iii) third, to the extent that the Maximum Number of Securities
has not been reached under the foregoing clauses (i) and (ii), shares of Common Stock or other equity securities that
the Company desires to sell, which can be sold without exceeding the Maximum Number of Securities; and (iv) fourth, to the extent
that the Maximum Number of Securities has not been reached under the foregoing clauses (i), (ii) and (iii),
shares of Common Stock or other equity securities of other persons or entities that the Company is obligated to register in a Registration
pursuant to separate written contractual arrangements with such persons and that can be sold without exceeding the Maximum Number of Securities.


 


2.1.5            Demand
Registration Withdrawal. A majority-in-interest of the Demanding Holders initiating a Demand Registration or a majority-in-interest
of the Requesting Holders (if any), pursuant to a Registration under subsection 2.1.1 shall have the right to withdraw from a Registration
pursuant to such Demand Registration for any or no reason whatsoever upon written notification to the Company and the Underwriter or Underwriters
(if any) of their intention to withdraw from such Registration prior to the effectiveness of the Registration Statement filed with the
Commission with respect to the Registration of their Registrable Securities pursuant to such Demand Registration. Notwithstanding anything
to the contrary in this Agreement, the Company shall be responsible for the Registration Expenses incurred in connection with a Registration
pursuant to a Demand Registration prior to its withdrawal under this subsection 2.1.5.


 






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2.2.           Piggyback
Registration.


 


2.2.1            Piggyback
Rights. If, at any time on or after the date the Company consummates a Business Combination, the Company proposes to file a Registration
Statement under the Securities Act with respect to an offering of equity securities, or securities or other obligations exercisable or
exchangeable for, or convertible into equity securities, for its own account or for the account of stockholders of the Company (or by
the Company and by the stockholders of the Company including, without limitation, pursuant to Section 2.1 hereof), other than
a Registration Statement (i) filed in connection with any employee stock option or other benefit plan, (ii) for an exchange
offer or offering of securities solely to the Company’s existing stockholders, (iii) for an offering of debt that is convertible
into equity securities of the Company or (iv) for a dividend reinvestment plan, then the Company shall give written notice of such
proposed filing to all of the Holders of Registrable Securities as soon as practicable but not less than ten (10) days before the
anticipated filing date of such Registration Statement, which notice shall (A) describe the amount and type of securities to be included
in such offering, the intended method(s) of distribution, and the name of the proposed managing Underwriter or Underwriters, if any,
in such offering, and (B) offer to all of the Holders of Registrable Securities the opportunity to register the sale of such number
of Registrable Securities as such Holders may request in writing within five (5) days after receipt of such written notice (such
Registration a “Piggyback Registration”). The Company shall, in good faith, cause such Registrable Securities
to be included in such Piggyback Registration and shall use its best efforts to cause the managing Underwriter or Underwriters of a proposed
Underwritten Offering to permit the Registrable Securities requested by the Holders pursuant to this subsection 2.2.1 to be included
in a Piggyback Registration on the same terms and conditions as any similar securities of the Company included in such Registration and
to permit the sale or other disposition of such Registrable Securities in accordance with the intended method(s) of distribution
thereof. All such Holders proposing to distribute their Registrable Securities through an Underwritten Offering under this subsection
2.2.1 shall enter into an underwriting agreement in customary form with the Underwriter(s) selected for such Underwritten Offering
by the Company. Notwithstanding the foregoing, Acropolis Infrastructure Acquisition Sponsor, L.P. may not exercise its “piggyback”
registration rights after seven (7) years from the pricing date of the Company’s initial public offering.


 


2.2.2            Reduction
of Piggyback Registration. If the managing Underwriter or Underwriters in an Underwritten Registration that is to be a Piggyback Registration,
in good faith, advises the Company and the Holders of Registrable Securities participating in the Piggyback Registration in writing that
the dollar amount or number of shares of Common Stock that the Company desires to sell, taken together with (i) the shares of Common
Stock, if any, as to which Registration has been demanded pursuant to separate written contractual arrangements with persons or entities
other than the Holders of Registrable Securities hereunder, (ii) the Registrable Securities as to which registration has been requested
pursuant to Section 2.2 hereof, and (iii) the shares of Common Stock, if any, as to which Registration has been requested
pursuant to separate written contractual piggy-back registration rights of other stockholders of the Company, exceeds the Maximum Number
of Securities, then:


 


(a)               If
the Registration is undertaken for the Company’s account, the Company shall include in any such Registration (A) first, shares
of Common Stock or other equity securities that the Company desires to sell, which can be sold without exceeding the Maximum Number of
Securities; (B) second, to the extent that the Maximum Number of Securities has not been reached under the foregoing clause (A),
the Registrable Securities of Holders exercising their rights to register their Registrable Securities pursuant to subsection 2.2.1
hereof (pro rata based on the number of Registrable Securities that each Holder has so requested), which can be sold without exceeding
the Maximum Number of Securities; and (C) third, to the extent that the Maximum Number of Securities has not been reached under the
foregoing clauses (A) and (B), share of Common Stock, if any, as to which Registration has been requested pursuant
to written contractual piggy-back registration rights of other stockholders of the Company, which can be sold without exceeding the Maximum
Number of Securities;


 






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(b)               If
the Registration is pursuant to a request by persons or entities other than the Holders of Registrable Securities, then the Company shall
include in any such Registration (A) first, shares of Common Stock or other equity securities, if any, of such requesting persons
or entities, other than the Holders of Registrable Securities, which can be sold without exceeding the Maximum Number of Securities; (B) second,
to the extent that the Maximum Number of Securities has not been reached under the foregoing clause (A), the Registrable Securities
of Holders exercising their rights to register their Registrable Securities pursuant to subsection 2.2.1 hereof, (pro rata based
on the number of Registrable Securities that each Holder has so requested), which can be sold without exceeding the Maximum Number of
Securities; (C) third, to the extent that the Maximum Number of Securities has not been reached under the foregoing clauses (A) and
(B), shares of Common Stock or other equity securities that the Company desires to sell, which can be sold without exceeding the
Maximum Number of Securities; and (D) fourth, to the extent that the Maximum Number of Securities has not been reached under the
foregoing clauses (A), (B) and (C), shares of Common Stock or other equity securities for the account of other
persons or entities that the Company is obligated to register pursuant to separate written contractual arrangements with such persons
or entities, which can be sold without exceeding the Maximum Number of Securities.


 


2.2.3            Piggyback
Registration Withdrawal. Any Holder of Registrable Securities shall have the right to withdraw from a Piggyback Registration for any
or no reason whatsoever upon written notification to the Company and the Underwriter or Underwriters (if any) of his, her or its intention
to withdraw from such Piggyback Registration prior to the effectiveness of the Registration Statement filed with the Commission with respect
to such Piggyback Registration. The Company (whether on its own good faith determination or as the result of a request for withdrawal
by persons pursuant to separate written contractual obligations) may withdraw a Registration Statement filed with the Commission in connection
with a Piggyback Registration at any time prior to the effectiveness of such Registration Statement. Notwithstanding anything to the contrary
in this Agreement, the Company shall be responsible for the Registration Expenses incurred in connection with the Piggyback Registration
prior to its withdrawal under this subsection 2.2.3.


 


2.2.4            Unlimited
Piggyback Registration Rights. For purposes of clarity, any Registration effected pursuant to Section 2.2 hereof shall
not be counted as a Registration pursuant to a Demand Registration effected under Section 2.1 hereof.


 






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2.3.           Registrations
on Form S-3. The Holders of Registrable Securities may at any time, and from time to time, request in writing that the Company,
pursuant to Rule 415 under the Securities Act (or any successor rule promulgated thereafter by the Commission), register the
resale of any or all of their Registrable Securities on Form S-3 or any similar short-form registration statement that may be available
at such time (“Form S-3”); provided, however, that the Company shall not be obligated to
effect such request through an Underwritten Offering. Within five (5) days of the Company’s receipt of a written request from
a Holder or Holders of Registrable Securities for a Registration on Form S-3, the Company shall promptly give written notice of the
proposed Registration on Form S-3 to all other Holders of Registrable Securities, and each Holder of Registrable Securities who thereafter
wishes to include all or a portion of such Holder’s Registrable Securities in such Registration on Form S-3 shall so notify
the Company, in writing, within ten (10) days after the receipt by the Holder of the notice from the Company. As soon as practicable
thereafter, but not more than twelve (12) days after the Company’s initial receipt of such written request for a Registration on
Form S-3, the Company shall register all or such portion of such Holder’s Registrable Securities as are specified in such written
request, together with all or such portion of Registrable Securities of any other Holder or Holders joining in such request as are specified
in the written notification given by such Holder or Holders; provided, however, that the Company shall not be obligated
to effect any such Registration pursuant to Section 2.3 hereof if (i) a Form S-3 is not available for such offering;
or (ii) the Holders of Registrable Securities, together with the Holders of any other equity securities of the Company entitled to
inclusion in such Registration, propose to sell the Registrable Securities and such other equity securities (if any) at any aggregate
price to the public of less than $25,000,000. Any request for any underwritten offering pursuant to a Form S-3 shall follow the procedures
of Section 2.1 (including Section 2.1.4) but, for the avoidance of doubt, shall not count as a demand registration
or an exercise of any demand rights.


 


2.4.           Restrictions
on Registration Rights. If (A) during the period starting with the date sixty (60) days prior to the Company’s good faith
estimate of the date of the filing of, and ending on a date one hundred and twenty (120) days after the effective date of, a Company initiated
Registration and provided that the Company has delivered written notice to the Holders prior to receipt of a Demand Registration
pursuant to subsection 2.1.1 and it continues to actively employ, in good faith, all reasonable efforts to cause the applicable
Registration Statement to become effective; (B) the Holders have requested an Underwritten Registration and the Company and the Holders
are unable to obtain the commitment of underwriters to firmly underwrite the offer; or (C) in the good faith judgment of the Board
such Registration would be seriously detrimental to the Company and the Board concludes as a result that it is essential to defer the
filing of such Registration Statement at such time, then in each case the Company shall furnish to such Holders a certificate signed by
the Chairman of the Board stating that in the good faith judgment of the Board it would be seriously detrimental to the Company for such
Registration Statement to be filed in the near future and that it is therefore essential to defer the filing of such Registration Statement.
In such event, the Company shall have the right to defer such filing for a period of not more than thirty (30) days; provided,
however, that the Company shall not defer its obligation in this manner more than once in any 12-month period. Notwithstanding
anything to the contrary contained in this Agreement, no Registration shall be effected or permitted and no Registration Statement shall
become effective, with respect to any Registrable Securities held by any Holder, until after the expiration of the Founder Shares Lock-up
Period or the Private Placement Lock-up Period, as the case may be.


 






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ARTICLE III

COMPANY PROCEDURES


 


3.1.           General
Procedures. If at any time on or after the date the Company consummates a Business Combination the Company is required to effect the
Registration of Registrable Securities, the Company shall use its best efforts to effect such Registration to permit the sale of such
Registrable Securities in accordance with the intended plan of distribution thereof, and pursuant thereto the Company shall, as expeditiously
as possible:


 


3.1.1            prepare
and file with the Commission as soon as practicable a Registration Statement with respect to such Registrable Securities and use its reasonable
best efforts to cause such Registration Statement to become effective and remain effective until all Registrable Securities covered by
such Registration Statement have been sold;


 


3.1.2            prepare
and file with the Commission such amendments and post-effective amendments to the Registration Statement, and such supplements to the
Prospectus, as may be requested by the Holders or any Underwriter of Registrable Securities or as may be required by the rules, regulations
or instructions applicable to the registration form used by the Company or by the Securities Act or rules and regulations thereunder
to keep the Registration Statement effective until all Registrable Securities covered by such Registration Statement are sold in accordance
with the intended plan of distribution set forth in such Registration Statement or supplement to the Prospectus;


 


3.1.3            prior
to filing a Registration Statement or prospectus, or any amendment or supplement thereto, furnish without charge to the Underwriters,
if any, and the Holders of Registrable Securities included in such Registration, and such Holders’ legal counsel, copies of such
Registration Statement as proposed to be filed, each amendment and supplement to such Registration Statement (in each case including all
exhibits thereto and documents incorporated by reference therein), the Prospectus included in such Registration Statement (including each
preliminary Prospectus), and such other documents as the Underwriters and the Holders of Registrable Securities included in such Registration
or the legal counsel for any such Holders may request in order to facilitate the disposition of the Registrable Securities owned by such
Holders;


 


3.1.4            prior
to any public offering of Registrable Securities, use its best efforts to (i) register or qualify the Registrable Securities covered
by the Registration Statement under such securities or “blue sky” laws of such jurisdictions in the United States
as the Holders of Registrable Securities included in such Registration Statement (in light of their intended plan of distribution) may
request and (ii) take such action necessary to cause such Registrable Securities covered by the Registration Statement to be registered
with or approved by such other governmental authorities as may be necessary by virtue of the business and operations of the Company and
do any and all other acts and things that may be necessary or advisable to enable the Holders of Registrable Securities included in such
Registration Statement to consummate the disposition of such Registrable Securities in such jurisdictions; provided, however,
that the Company shall not be required to qualify generally to do business in any jurisdiction where it would not otherwise be required
to qualify or take any action to which it would be subject to general service of process or taxation in any such jurisdiction where it
is not then otherwise so subject;


 






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3.1.5            cause
all such Registrable Securities to be listed on each securities exchange or automated quotation system on which similar securities issued
by the Company are then listed;


 


3.1.6            provide
a transfer agent or warrant agent, as applicable, and registrar for all such Registrable Securities no later than the effective date of
such Registration Statement;


 


3.1.7            advise
each seller of such Registrable Securities, promptly after it shall receive notice or obtain knowledge thereof, of the issuance of any
stop order by the Commission suspending the effectiveness of such Registration Statement or the initiation or threatening of any proceeding
for such purpose and promptly use its reasonable best efforts to prevent the issuance of any stop order or to obtain its withdrawal if
such stop order should be issued;


 


3.1.8            at
least five (5) days prior to the filing of any Registration Statement or Prospectus or any amendment or supplement to such Registration
Statement or Prospectus or any document that is to be incorporated by reference into such Registration Statement or Prospectus, furnish
a copy thereof to each seller of such Registrable Securities or its counsel;


 


3.1.9            notify
the Holders at any time when a Prospectus relating to such Registration Statement is required to be delivered under the Securities Act,
of the happening of any event as a result of which the Prospectus included in such Registration Statement, as then in effect, includes
a Misstatement, and then to correct such Misstatement as set forth in Section 3.4 hereof;


 


3.1.10           permit
a representative of the Holders, the Underwriters, if any, and any attorney or accountant retained by such Holders or Underwriter to participate,
at each such person’s own expense, in the preparation of the Registration Statement, and cause the Company’s officers, directors
and employees to supply all information reasonably requested by any such representative, Underwriter, attorney or accountant in connection
with the Registration; provided, however, that such representatives or Underwriters enter into a confidentiality agreement,
in form and substance reasonably satisfactory to the Company, prior to the release or disclosure of any such information;


 


3.1.11           obtain
a “cold comfort” letter from the Company’s independent registered public accountants in the event of an Underwritten
Registration, in customary form and covering such matters of the type customarily covered by “cold comfort” letters as the
managing Underwriter may reasonably request, and reasonably satisfactory to a majority-in-interest of the participating Holders;


 


3.1.12           on
the date the Registrable Securities are delivered for sale pursuant to such Registration, obtain an opinion, dated such date, of counsel
representing the Company for the purposes of such Registration, addressed to the Holders, the placement agent or sales agent, if any,
and the Underwriters, if any, covering such legal matters with respect to the Registration in respect of which such opinion is being given
as the Holders, placement agent, sales agent, or Underwriter may reasonably request and as are customarily included in such opinions and
negative assurance letters, and reasonably satisfactory to a majority in interest of the participating Holders;


 






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3.1.13           in
the event of any Underwritten Offering, enter into and perform its obligations under an underwriting agreement, in usual and customary
form, with the managing Underwriter of such offering;


 


3.1.14           make
available to its security holders, as soon as reasonably practicable, an earnings statement covering the period of at least twelve (12)
months beginning with the first day of the Company’s first full calendar quarter after the effective date of the Registration Statement
which satisfies the provisions of Section 11(a) of the Securities Act and Rule 158 thereunder (or any successor rule promulgated
thereafter by the Commission);


 


3.1.15           if
the Registration involves the Registration of Registrable Securities involving gross proceeds in excess of $25,000,000, use its reasonable
efforts to make available senior executives of the Company to participate in customary “road show” presentations that may
be reasonably requested by the Underwriter in any Underwritten Offering; and


 


3.1.16           otherwise,
in good faith, cooperate reasonably with, and take such customary actions as may reasonably be requested by the Holders, in connection
with such Registration, including, without limitation, making available senior executives of the Company to participate in any due diligence
sessions that may be reasonably requested by the Underwriter in any Underwritten Offering.


 


3.2.           Registration
Expenses. The Registration Expenses of all Registrations shall be borne by the Company. It is acknowledged by the Holders that the
Holders shall bear all incremental selling expenses relating to the sale of Registrable Securities, such as Underwriters’ commissions
and discounts, brokerage fees, Underwriter marketing costs and, other than as set forth in the definition of “Registration Expenses,”
all reasonable fees and expenses of any legal counsel representing the Holders.


 


3.3.           Requirements
for Participation in Underwritten Offerings. No person may participate in any Underwritten Offering for equity securities of the Company
pursuant to a Registration initiated by the Company hereunder unless such person (i) agrees to sell such person’s securities
on the basis provided in any underwriting arrangements approved by the Company and (ii) completes and executes all customary questionnaires,
powers of attorney, indemnities, lock-up agreements, underwriting agreements and other customary documents as may be reasonably required
under the terms of such underwriting arrangements.


 






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3.4.           Suspension
of Sales; Adverse Disclosure. Upon receipt of written notice from the Company that a Registration Statement or Prospectus contains
a Misstatement, each of the Holders shall forthwith discontinue disposition of Registrable Securities until he, she or it has received
copies of a supplemented or amended Prospectus correcting the Misstatement (it being understood that the Company hereby covenants to prepare
and file such supplement or amendment as soon as practicable after the time of such notice), or until he, she or it is advised in writing
by the Company that the use of the Prospectus may be resumed. If the filing, initial effectiveness or continued use of a Registration
Statement in respect of any Registration at any time would require the Company to make an Adverse Disclosure or would require the inclusion
in such Registration Statement of financial statements that are unavailable to the Company for reasons beyond the Company’s control,
the Company may, upon giving prompt written notice of such action to the Holders, delay the filing or initial effectiveness of, or suspend
use of, such Registration Statement for the shortest period of time, but in no event more than thirty (30) days, determined in good faith
by the Company to be necessary for such purpose. In the event the Company exercises its rights under the preceding sentence, the Holders
agree to suspend, immediately upon their receipt of the notice referred to above, their use of the Prospectus relating to any Registration
in connection with any sale or offer to sell Registrable Securities. The Company shall immediately notify the Holders of the expiration
of any period during which it exercised its rights under this Section 3.4.


 


3.5.           Reporting
Obligations. As long as any Holder shall own Registrable Securities, the Company, at all times while it shall be a reporting company
under the Exchange Act, covenants to file timely (or obtain extensions in respect thereof and file within the applicable grace period)
all reports required to be filed by the Company after the date hereof pursuant to Sections 13(a) or 15(d) of the Exchange Act
and to promptly furnish the Holders with true and complete copies of all such filings. The Company further covenants that it shall take
such further action as any Holder may reasonably request, all to the extent required from time to time to enable such Holder to sell shares
of Common Stock held by such Holder without registration under the Securities Act within the limitation of the exemptions provided by
Rule 144 promulgated under the Securities Act (or any successor rule promulgated thereafter by the Commission), including providing
any legal opinions. Upon the request of any Holder, the Company shall deliver to such Holder a written certification of a duly authorized
officer as to whether it has complied with such requirements.


 


ARTICLE IV

INDEMNIFICATION AND CONTRIBUTION


 


4.1.           Indemnification.


 


4.1.1            The
Company agrees to indemnify, to the extent permitted by law, each Holder of Registrable Securities, its officers and directors and each
person who controls such Holder (within the meaning of the Securities Act) against all losses, claims, damages, liabilities and expenses
(including attorneys’ fees) caused by any untrue or alleged untrue statement of material fact contained in any Registration Statement,
Prospectus or preliminary Prospectus or any amendment thereof or supplement thereto or any omission or alleged omission of a material
fact required to be stated therein or necessary to make the statements therein not misleading, except insofar as the same are caused by
or contained in any information furnished in writing to the Company by such Holder expressly for use therein. The Company shall indemnify
the Underwriters, their officers and directors and each person who controls such Underwriters (within the meaning of the Securities Act)
to the same extent as provided in the foregoing with respect to the indemnification of the Holder.


 






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4.1.2            In
connection with any Registration Statement in which a Holder of Registrable Securities is participating, such Holder shall furnish to
the Company in writing such information and affidavits as the Company reasonably requests for use in connection with any such Registration
Statement or Prospectus and, to the extent permitted by law, shall indemnify the Company, its directors and officers and agents and each
person who controls the Company (within the meaning of the Securities Act) against any losses, claims, damages, liabilities and expenses
(including without limitation reasonable attorneys’ fees) resulting from any untrue statement of material fact contained in the
Registration Statement, Prospectus or preliminary Prospectus or any amendment thereof or supplement thereto or any omission of a material
fact required to be stated therein or necessary to make the statements therein not misleading, but only to the extent that such untrue
statement or omission is contained in any information or affidavit so furnished in writing by such Holder expressly for use therein; provided,
however, that the obligation to indemnify shall be several, not joint and several, among such Holders of Registrable Securities,
and the liability of each such Holder of Registrable Securities shall be in proportion to and limited to the net proceeds received by
such Holder from the sale of Registrable Securities pursuant to such Registration Statement. The Holders of Registrable Securities shall
indemnify the Underwriters, their officers, directors and each person who controls such Underwriters (within the meaning of the Securities
Act) to the same extent as provided in the foregoing with respect to indemnification of the Company.


 


4.1.3            Any
person entitled to indemnification herein shall (i) give prompt written notice to the indemnifying party of any claim with respect
to which it seeks indemnification (provided that the failure to give prompt notice shall not impair any person’s right to
indemnification hereunder to the extent such failure has not materially prejudiced the indemnifying party) and (ii) unless in such
indemnified party’s reasonable judgment a conflict of interest between such indemnified and indemnifying parties may exist with
respect to such claim, permit such indemnifying party to assume the defense of such claim with counsel reasonably satisfactory to the
indemnified party. If such defense is assumed, the indemnifying party shall not be subject to any liability for any settlement made by
the indemnified party without its consent (but such consent shall not be unreasonably withheld). An indemnifying party who is not entitled
to, or elects not to, assume the defense of a claim shall not be obligated to pay the fees and expenses of more than one counsel for all
parties indemnified by such indemnifying party with respect to such claim, unless in the reasonable judgment of any indemnified party
a conflict of interest may exist between such indemnified party and any other of such indemnified parties with respect to such claim.
No indemnifying party shall, without the consent of the indemnified party, consent to the entry of any judgment or enter into any settlement
which cannot be settled in all respects by the payment of money (and such money is so paid by the indemnifying party pursuant to the terms
of such settlement) or which settlement does not include as an unconditional term thereof the giving by the claimant or plaintiff to such
indemnified party of a release from all liability in respect to such claim or litigation.


 






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4.1.4            The
indemnification provided for under this Agreement shall remain in full force and effect regardless of any investigation made by or on
behalf of the indemnified party or any officer, director or controlling person of such indemnified party and shall survive the transfer
of securities. The Company and each Holder of Registrable Securities participating in an offering also agrees to make such provisions
as are reasonably requested by any indemnified party for contribution to such party in the event the Company’s or such Holder’s
indemnification is unavailable for any reason.


 


4.1.5            If
the indemnification provided under Section 4.1 hereof from the indemnifying party is unavailable or insufficient to hold harmless
an indemnified party in respect of any losses, claims, damages, liabilities and expenses referred to herein, then the indemnifying party,
in lieu of indemnifying the indemnified party, shall contribute to the amount paid or payable by the indemnified party as a result of
such losses, claims, damages, liabilities and expenses in such proportion as is appropriate to reflect the relative fault of the indemnifying
party and the indemnified party, as well as any other relevant equitable considerations. The relative fault of the indemnifying party
and indemnified party shall be determined by reference to, among other things, whether any action in question, including any untrue or
alleged untrue statement of a material fact or omission or alleged omission to state a material fact, was made by, or relates to information
supplied by, such indemnifying party or indemnified party, and the indemnifying party’s and indemnified party’s relative intent,
knowledge, access to information and opportunity to correct or prevent such action; provided, however, that the liability
of any Holder under this subsection 4.1.5 shall be limited to the amount of the net proceeds received by such Holder in such offering
giving rise to such liability. The amount paid or payable by a party as a result of the losses or other liabilities referred to above
shall be deemed to include, subject to the limitations set forth in subsections 4.1.1, 4.1.2 and 4.1.3 above, any
legal or other fees, charges or expenses reasonably incurred by such party in connection with any investigation or proceeding. The parties
hereto agree that it would not be just and equitable if contribution pursuant to this subsection 4.1.5 were determined by pro rata
allocation or by any other method of allocation, which does not take account of the equitable considerations referred to in this subsection
4.1.5. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall
be entitled to contribution pursuant to this subsection 4.1.5 from any person who was not guilty of such fraudulent misrepresentation.


 


ARTICLE V

MISCELLANEOUS


 


5.1.           Notices.
Any notice or communication under this Agreement must be in writing and given by (i) deposit in the United States mail, addressed
to the party to be notified, postage prepaid and registered or certified with return receipt requested, (ii) delivery in person or
by courier service providing evidence of delivery, or (iii) transmission by hand delivery, electronic mail or facsimile. Each notice
or communication that is mailed, delivered or transmitted in the manner described above shall be deemed sufficiently given, served, sent,
and received, in the case of mailed notices, on the third business day following the date on which it is mailed and, in the case of notices
delivered by courier service, hand delivery, electronic mail or facsimile, at such time as it is delivered to the addressee (with the
delivery receipt or the affidavit of messenger) or at such time as delivery is refused by the addressee upon presentation. Any notice
or communication under this Agreement must be addressed, if to the Company, to: 9 West 57th Street, 43rd Floor,
New York, NY 10019, or by email at: jcrossen@apollo.com. Any party may change its address for notice at any time and from time to time
by written notice to the other parties hereto, and such change of address shall become effective thirty (30) days after delivery of such
notice as provided in this Section 5.1.


 






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5.2.           Assignment;
No Third Party Beneficiaries.


 


5.2.1            This
Agreement and the rights, duties and obligations of the Company hereunder may not be assigned or delegated by the Company in whole or
in part.


 


5.2.2            A
Holder may assign or delegate such Holder’s rights, duties or obligations under this Agreement, in whole or in part, to a Permitted
Transferee who agrees to become bound by the transfer restrictions set forth in this Agreement.


 


5.2.3            This
Agreement and the provisions hereof shall be binding upon and shall inure to the benefit of each of the parties and its successors and
the permitted assigns of the Holders, which shall include Permitted Transferees.


 


5.2.4            This
Agreement shall not confer any rights or benefits on any persons that are not parties hereto, other than as expressly set forth in this
Agreement and Section 5.2 hereof.


 


5.2.5            No
assignment by any party hereto of such party’s rights, duties and obligations hereunder shall be binding upon or obligate the Company
unless and until the Company shall have received (i) written notice of such assignment as provided in Section 5.1 hereof
and (ii) the written agreement of the assignee, in a form reasonably satisfactory to the Company, to be bound by the terms and provisions
of this Agreement (which may be accomplished by an addendum or certificate of joinder to this Agreement). Any transfer or assignment made
other than as provided in this Section 5.2 shall be null and void.


 


5.3.           Counterparts.
This Agreement may be executed in multiple counterparts (including facsimile or PDF counterparts), each of which shall be deemed an original,
and all of which together shall constitute the same instrument, but only one of which need be produced.


 


5.4.           Governing
Law; Venue. NOTWITHSTANDING THE PLACE WHERE THIS AGREEMENT MAY BE EXECUTED BY ANY OF THE PARTIES HERETO, THE PARTIES EXPRESSLY
AGREE THAT (I) THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED UNDER THE LAWS OF THE STATE OF NEW YORK AS APPLIED TO AGREEMENTS
AMONG NEW YORK RESIDENTS ENTERED INTO AND TO BE PERFORMED ENTIRELY WITHIN NEW YORK, WITHOUT REGARD TO THE CONFLICT OF LAW PROVISIONS OF
SUCH JURISDICTION AND (II) THE VENUE FOR ANY ACTION TAKEN WITH RESPECT TO THIS AGREEMENT SHALL BE ANY STATE OR FEDERAL COURT IN NEW
YORK COUNTY IN THE STATE OF NEW YORK.


 






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EACH PARTY HERETO ACKNOWLEDGES AND AGREES THAT ANY
CONTROVERSY WHICH MAY ARISE UNDER THIS AGREEMENT IS LIKELY TO INVOLVE COMPLICATED AND DIFFICULT ISSUES, AND, THEREFORE, EACH SUCH
PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT SUCH PARTY MAY HAVE
TO A TRIAL BY JURY IN RESPECT TO ANY ACTION DIRECTLY OR INDIRECTLY ARISING OUT OF, UNDER OR IN CONNECTION WITH OR RELATING TO THIS AGREEMENT
OR THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT.


 


5.5.           Amendments
and Modifications. Upon the written consent of the Company and the Holders of at least fifty percent (50%) of the Registrable Securities
at the time in question, compliance with any of the provisions, covenants and conditions set forth in this Agreement may be waived, or
any of such provisions, covenants or conditions may be amended or modified; provided, however, that notwithstanding the
foregoing, any amendment hereto or waiver hereof that adversely affects one Holder, solely in his, her or its capacity as a holder of
shares of capital stock of the Company, in a manner that is materially different from the other Holders (in such capacity) shall require
the consent of the Holder so affected. No course of dealing between any Holder or the Company and any other party hereto or any failure
or delay on the part of a Holder or the Company in exercising any rights or remedies under this Agreement shall operate as a waiver of
any rights or remedies of any Holder or the Company. No single or partial exercise of any rights or remedies under this Agreement by a
party shall operate as a waiver or preclude the exercise of any other rights or remedies hereunder or thereunder by such party.


 


5.6.           Other
Registration Rights. The Company represents and warrants that no person, other than a Holder of Registrable Securities, has any right
to require the Company to register any securities of the Company for sale or to include such securities of the Company in any Registration
filed by the Company for the sale of securities for its own account or for the account of any other person. Further, the Company represents
and warrants that this Agreement supersedes any other registration rights agreement or agreement with similar terms and conditions and
in the event of a conflict between any such agreement or agreements and this Agreement, the terms of this Agreement shall prevail.


 


5.7.           Term.
This Agreement shall terminate upon the earlier of (i) the tenth anniversary of the date of this Agreement or (ii) the date
as of which (A) all of the Registrable Securities have been sold pursuant to a Registration Statement (but in no event prior to the
applicable period referred to in Section 4(a)(3) of the Securities Act and Rule 174 thereunder (or any successor rule promulgated
thereafter by the Commission)) or (B) the Holders of all Registrable Securities are permitted to sell the Registrable Securities
under Rule 144 (or any similar provision) under the Securities Act without limitation on the amount of securities sold or the manner
of sale. The provisions of Section 3.5 and Article IV shall survive any termination.


 


[SIGNATURE PAGES FOLLOW]


 






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


 


	 	COMPANY:
	 	 
	 	ACROPOLIS INFRASTRUCTURE ACQUISITION CORP.
	 	a Delaware corporation
	 	 
	 	By:	 
	 	 	Name: James Crossen
	 	 	Title: Chief Financial Officer, Chief Accounting Officer and
Secretary
	 	 
	 	 
	 	HOLDER:
	 	 
	 	ACROPOLIS INFRASTRUCTURE ACQUISITION SPONSOR, L.P.
	 	a Cayman Islands exempted limited partnership
	 	 
	 	By: AP Caps II Holdings GP, LLC, its general partner
	 	 
	 	By: Apollo Principal Holdings III, L.P., its managing member
	 	 
	 	By: Apollo Principal Holdings III GP, Ltd., its general partner
	 	 
	 	By:	 
	 	 	Name: James Elworth
	 	 	Title: Vice President



 


[Signature Page to Registration
Rights Agreement]


 






     


     


    

 


	 	HOLDER:
	 	 
	 	By:
	 	 
	 	 
	 	Curtis Morgan
	 	 
	 	 
	 	David Small
	 	 
	 	 
	 	Theresa M.H. Wise, Ph.D.



 


[Signature Page to Registration
Rights Agreement]