Document:

Exhibit 10.4

 

FORM OF REGISTRATION RIGHTS AGREEMENT

 

THIS REGISTRATION RIGHTS AGREEMENT
(this “Agreement”) is entered into as of the ___ day of __________, 2021, by and among Metal Sky Star Acquisition
Corporation., a Cayman Islands company (the “Company”), and the undersigned parties listed under Investors on
the signature page hereto (each, an “Investor” and collectively, the “Investors”).

 

WHEREAS, the Investors and
the Company desire to enter into this Agreement to provide the Investors with certain rights relating to the registration under the United
States’ federal securities laws and regulations of the securities held by them as of the date hereof.

 

NOW, THEREFORE, in consideration
of the mutual covenants and agreements set forth herein, and for other good and valuable consideration, the receipt and sufficiency of
which are hereby acknowledged, the parties hereto agree as follows:

 

1. DEFINITIONS.
The following capitalized terms used herein have the following meanings:

 

“Agreement”
means this Agreement, as amended, restated, supplemented, or otherwise modified from time to time.

 

“Business Combination”
means the acquisition of direct or indirect ownership through a merger, stock exchange, asset acquisition, stock purchase, recapitalization,
reorganization or other similar type of transaction, of one or more businesses or entities.

 

“Commission”
means the Securities and Exchange Commission, or any other Federal agency then administering the Securities Act or the Exchange Act.

 

“Company”
is defined in the preamble to this Agreement.

 

“Demand Registration”
is defined in Section 2.1.1.

 

“Demanding Holder”
is defined in Section 2.1.1.

 

“Exchange Act”
means the Securities Exchange Act of 1934, as amended, and the rules and regulations of the Commission promulgated thereunder, all as
the same shall be in effect at the time.

 

“Form S-3”
is defined in Section 2.3.

 

“Founder Shares”
means the [1,437,500] Ordinary Shares of the Company issued to M-Star Management Corporation prior to the Company’s initial public
offering.

 

“Indemnified Party”
is defined in Section 4.3.

 

“Indemnifying
Party” is defined in Section 4.3.

  

“Investor”
is defined in the preamble to this Agreement.

 

“Investor Indemnified
Party” is defined in Section 4.1.

 

“Maximum Number
of Shares” is defined in Section 2.1.4.

 

“Notices”
is defined in Section 6.3.

 

“Ordinary Shares”
means the ordinary shares of the Company, par value $0.001 per share.

 

     

     

    

 

“Piggy-Back Registration”
is defined in Section 2.2.1. 

 

“Private Units”
means the [250,000] private units sold and issued to M-Star Management Corporation (or its designees or affiliates) as of the date hereof
which M-Star Management Corporation (or its designees) are privately purchasing under an exemption from registration under the Securities
Act simultaneously with the consummation of the Company’s initial public offering, as further described in the Registration Statement.

 

“Pro Rata”
is defined in Section 2.1.4.

 

“Register,”
“Registered” and “Registration” 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.

 

“Registrable Securities”
means: (i) the Founder Shares: (ii) the Private Units; (iii) the Ordinary Shares underlying the Private Units and the components thereof;
(iv) any securities issuable upon conversion of loans from Investors (or their designees or affiliates) to the Company for the Company’s
use as working capital, if any (the “Working Capital Loan Securities”). Registrable Securities include any warrants,
shares of capital stock or other securities of the Company issued as a dividend or other distribution with respect to or in exchange for
or in replacement of such Founder Shares, Private Units and Working Capital Loan Securities (and underlying securities). As to any particular
Registrable Securities, 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 them not bearing a legend restricting further transfer shall have been delivered by the Company, and subsequent public distribution
of them shall not require registration under the Securities Act; (c) such securities shall have ceased to be outstanding, or (d) the Registrable
Securities are freely saleable under Rule 144 under the Securities Act without volume limitations.

 

“Registration
Statement” means a registration statement filed by the Company with the Commission in compliance with the Securities Act
and the rules and regulations promulgated thereunder for a public offering and sale of equity securities, or securities or other obligations
exercisable or exchangeable for, or convertible into, equity securities (other than a registration statement on Form S-4 or Form S-8,
or their successors, or any registration statement covering only securities proposed to be issued in exchange for securities or assets
of another entity).

 

“Release Date”
means the date on which the Founder Shares are disbursed from escrow pursuant to Section 3 of that certain Stock Escrow Agreement dated
as of ______ 2021 by and among the holders of Founder Shares and VStock Transfer LLC.

 

“Rights”
means the rights to purchase 1/10th of an Ordinary Share.

 

“Securities Act”
means the Securities Act of 1933, as amended, and the rules and regulations of the Commission promulgated thereunder, all as the same
shall be in effect at the time.

 

“Underwriter”
means 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.

 

“Units”
means the units of the Company as described in the Registration Statement, each comprised of (i) one Ordinary Share, (ii) one Warrant
to purchase one-half of an Ordinary Share and (iii) a Right to purchase 1/10th of an Ordinary Share.

 

“Warrants”
means the warrants of the Company being offered and sold under the Registration Statement entitling the holder to purchase one-half of
an Ordinary Share.

 

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2. REGISTRATION RIGHTS.

 

2.1 Demand Registration.

 

2.1.1 Request for
Registration. At any time and from time to time on or after (i) the date that the Company consummates a Business Combination with
respect to the Founder Shares, Private Warrants and Working Capital Loan Securities (or underlying securities) or (ii) three months prior
to the Release Date with respect to all other Registrable Securities, the holders of a majority-in-interest of such Founder Shares, Private
Warrants and Working Capital Loan Securities (or underlying securities), or other Registrable Securities, as the case may be, the Investors,
officers or directors of the Company or their affiliates, or the transferees of the Investors, may make a written demand for registration
under the Securities Act of all or part of their Founder Shares and Private Warrants or Working Capital Loan Securities (or underlying
securities or other Registrable Securities, as the case may be (a “Demand Registration”). Any demand for a Demand
Registration shall specify the number of shares of Registrable Securities proposed to be sold and the intended method(s) of distribution
thereof. The Company will notify all holders of Registrable Securities of the demand, and each holder of Registrable Securities who wishes
to include all or a portion of such holder’s Registrable Securities in the Demand Registration (each such holder including shares
of Registrable Securities in such registration, a “Demanding Holder”) shall so notify the Company within fifteen
(15) days after the receipt by the holder of the notice from the Company. Upon any such request, the Demanding Holders shall be entitled
to have their Registrable Securities included in the Demand Registration, subject to Section 2.1.4 and the provisos set forth in Section
3.1.1. The Company shall not be obligated to effect more than an aggregate of three (3) Demand Registrations under this Section 2.1.1
in respect of all Registrable Securities.

 

2.1.2 Effective Registration.
A registration will not count as a Demand Registration until the Registration Statement filed with the Commission with respect to such
Demand Registration has been declared effective and the Company has complied with all of its obligations under this Agreement with respect
thereto; provided, however, that if, after such Registration Statement has been declared effective, the offering of Registrable Securities
pursuant to a Demand Registration is interfered with by any stop order or injunction of the Commission or any other governmental agency
or court, the Registration Statement with respect to such Demand Registration will 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 thereafter elect to continue the offering; provided, further, that the Company shall not be obligated to file a second Registration
Statement until a Registration Statement that has been filed is counted as a Demand Registration or is terminated. 

 

2.1.3 Underwritten
Offering. If a majority-in-interest of the Demanding Holders so elect and such holders so advise the Company as part of their written
demand for a Demand Registration, the offering of such Registrable Securities pursuant to such Demand Registration shall be in the form
of an underwritten offering. In such event, the right of any holder to include its Registrable Securities in such registration shall be
conditioned upon such holder’s participation in such underwriting and the inclusion of such holder’s Registrable Securities
in the underwriting to the extent provided herein. All Demanding Holders proposing to distribute their Registrable Securities through
such underwriting shall enter into an underwriting agreement in customary form with the Underwriter or Underwriters selected for such
underwriting by a majority-in-interest of the holders initiating the Demand Registration.

 

2.1.4 Reduction of
Offering. If the managing Underwriter or Underwriters for a Demand Registration that is to be an underwritten offering advises the
Company and the Demanding Holders in writing that the dollar amount or number of shares of Registrable Securities which the Demanding
Holders desire to sell, taken together with all other Ordinary Shares or other securities which the Company desires to sell and the Ordinary
Shares, if any, as to which registration has been requested pursuant to written contractual piggy-back registration rights held by other
stockholders of the Company who desire to sell, exceeds the maximum dollar amount or maximum number of shares that can be sold in such
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 shares, as applicable, the “Maximum Number of Shares”),
then the Company shall include in such registration: (i) first, the Registrable Securities as to which Demand Registration has been requested
by the Demanding Holders (pro rata in accordance with the number of shares that each such Person has requested be included in such registration,
regardless of the number of shares held by each such Person (such proportion is referred to herein as “Pro Rata”))
that can be sold without exceeding the Maximum Number of Shares; (ii) second, to the extent that the Maximum Number of Shares has not
been reached under the foregoing clause (i), the Ordinary Shares or other securities that the Company desires to sell that can be sold
without exceeding the Maximum Number of Shares; (iii) third, to the extent that the Maximum Number of Shares has not been reached under
the foregoing clauses (i) and (ii), the Ordinary Shares or other securities for the account of other persons that the Company is obligated
to register pursuant to written contractual arrangements with such persons and that can be sold without exceeding the Maximum Number of
Shares.

 

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2.1.5 Withdrawal.
If a majority-in-interest of the Demanding Holders disapprove of the terms of any underwriting or are not entitled to include all of their
Registrable Securities in any offering, such majority-in-interest of the Demanding Holders may elect to withdraw from such offering by
giving written notice to the Company and the Underwriter or Underwriters of their request to withdraw prior to the effectiveness of the
Registration Statement filed with the Commission with respect to such Demand Registration. If the majority-in-interest of the Demanding
Holders withdraws from a proposed offering relating to a Demand Registration, then such registration shall not count as a Demand Registration
provided for in Section 2.1. 

 

2.2 Piggy-Back Registration.

 

2.2.1 Piggy-Back
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, by the Company for its own account or for shareholders of the Company for their
account (or by the Company and by shareholders of the Company including, without limitation, pursuant to Section 2.1), 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 shareholders, (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 (x) give written notice of such proposed filing to the holders of Registrable
Securities as soon as practicable but in no event less than ten (10) days before the anticipated filing date, which notice shall 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, of the offering, and (y) offer to the holders of Registrable Securities in such notice the
opportunity to register the sale of such number of shares of Registrable Securities as such holders may request in writing within five
(5) days following receipt of such notice (a “Piggy-Back Registration”). The Company shall cause such Registrable
Securities to be included in such 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 to be included in a Piggy-Back Registration on the same terms and
conditions as any similar securities of the Company and to permit the sale or other disposition of such Registrable Securities in accordance
with the intended method(s) of distribution thereof. All holders of Registrable Securities proposing to distribute their securities through
a Piggy-Back Registration that involves an Underwriter or Underwriters shall enter into an underwriting agreement in customary form with
the Underwriter or Underwriters selected for such Piggy-Back Registration.

 

2.2.2 Reduction of
Offering. If the managing Underwriter or Underwriters for a Piggy-Back Registration that is to be an underwritten offering advises
the Company and the holders of Registrable Securities in writing that the dollar amount or number of Ordinary Shares which the Company
desires to sell, taken together with Ordinary Shares, 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, the Registrable Securities
as to which registration has been requested under this Section 2.2, and the Ordinary Shares, if any, as to which registration has been
requested pursuant to the written contractual piggy-back registration rights of other stockholders of the Company, exceeds the Maximum
Number of Shares, then the Company shall include in any such registration:

 

a) If the registration is undertaken
for the Company’s account: (A) the Ordinary Shares or other securities that the Company desires to sell that can be sold without
exceeding the Maximum Number of Shares; (B) to the extent that the Maximum Number of Shares has not been reached under the foregoing clause
(A), the Ordinary Shares or other securities, if any, comprised of Registrable Securities, as to which registration has been requested
pursuant to the applicable written contractual piggy-back registration rights of such security holders, Pro Rata, which can be sold without
exceeding the Maximum Number of Shares; and (C) to the extent that the Maximum Number of Shares has not been reached under the foregoing
clauses (A) and (B), the Ordinary Shares or other securities for the account of other persons that the Company is obligated to register
pursuant to written contractual piggy-back registration rights with such persons and that can be sold without exceeding the Maximum Number
of Shares; and

   

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b) If the registration is a “demand”
registration undertaken at the demand of persons other than either the holders of Registrable Securities, (A) first, the Ordinary Shares
or other securities for the account of the demanding persons that can be sold without exceeding the Maximum Number of Shares; (B) second,
to the extent that the Maximum Number of Shares has not been reached under the foregoing clause (A), the Ordinary Shares or other securities
that the Company desires to sell which can be sold without exceeding the Maximum Number of Shares; (C) third, to the extent that the Maximum
Number of Shares has not been reached under the foregoing clauses (A) and (B), collectively, the Ordinary Shares or other securities comprised
of Registrable Securities, Pro Rata, as to which registration has been requested pursuant to the terms hereof, which can be sold without
exceeding the Maximum Number of Shares; and (D) fourth, to the extent that the Maximum Number of Shares has not been reached under the
foregoing clauses (A), (B) and (C), the Ordinary Shares or other securities for the account of other persons that the Company is obligated
to register pursuant to written contractual arrangements with such persons, that can be sold without exceeding the Maximum Number of Shares.

 

2.2.3 Withdrawal.
Any holder of Registrable Securities may elect to withdraw such holder’s request for inclusion of Registrable Securities in any
Piggy-Back Registration by giving written notice to the Company of such request to withdraw prior to the effectiveness of the Registration
Statement. The Company (whether on its own determination or as the result of a withdrawal by persons making a demand pursuant to written
contractual obligations) may withdraw a Registration Statement at any time prior to the effectiveness of such Registration Statement.
Notwithstanding any such withdrawal, the Company shall pay all expenses incurred by the holders of Registrable Securities in connection
with such Piggy-Back Registration as provided in Section 3.3. 

 

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 register
the resale of any or all of such Registrable Securities on Form S-3 or any similar short-form registration which 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. Upon receipt of such written request, the Company will promptly give written notice of the proposed registration
to all other holders of Registrable Securities, and, as soon as practicable thereafter, effect the registration of all or such portion
of such holder’s or holders’ Registrable Securities as are specified in such request, together with all or such portion of
the Registrable Securities or other securities of the Company, if any, of any other holder or holders joining in such request as are specified
in a written request given within fifteen (15) days after receipt of such written notice from the Company; provided, however, that the
Company shall not be obligated to effect any such registration pursuant to this Section 2.3: (i) if Form S-3 is not available for such
offering; or (ii) if the holders of the Registrable Securities, together with the holders of any other securities of the Company entitled
to inclusion in such registration, propose to sell Registrable Securities and such other securities (if any) at any aggregate price to
the public of less than $500,000. Registrations effected pursuant to this Section 2.3 shall not be counted as Demand Registrations effected
pursuant to Section 2.1.

 

3. REGISTRATION PROCEDURES.

 

3.1 Filings; Information.
Whenever the Company is required to effect the registration of any Registrable Securities pursuant to Section 2, the Company shall use
its best efforts to effect the registration and sale of such Registrable Securities in accordance with the intended method(s) of distribution
thereof as expeditiously as practicable, and in connection with any such request:

 

3.1.1 Filing Registration
Statement. The Company shall use its best efforts to, as expeditiously as possible after receipt of a request for a Demand Registration
pursuant to Section 2.1, prepare and file with the Commission a Registration Statement on any form for which the Company then qualifies
or which counsel for the Company shall deem appropriate and which form shall be available for the sale of all Registrable Securities to
be registered thereunder in accordance with the intended method(s) of distribution thereof, and shall use its best efforts to cause such
Registration Statement to become effective and use its best efforts to keep it effective for the period required by Section 3.1.3; provided,
however, that the Company shall have the right to defer any Demand Registration for up to thirty (30) days, and any Piggy-Back Registration
for such period as may be applicable to deferment of any demand registration to which such Piggy-Back Registration relates, in each case
if the Company shall furnish to the holders a certificate signed by the President or Chairman of the Company stating that, in the good
faith judgment of the Board of Directors of the Company, it would be materially detrimental to the Company for such Registration Statement
to be effected at such time; provided further, however, that the Company shall not have the right to exercise the right set forth in the
immediately preceding proviso more than once in any 365-day period in respect of a Demand Registration hereunder.

 

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3.1.2 Copies.
The Company shall, prior to filing a Registration Statement or prospectus, or any amendment or supplement thereto, furnish without charge
to 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 holders of Registrable Securities included in such registration or legal counsel for any such holders
may request in order to facilitate the disposition of the Registrable Securities owned by such holders.

 

3.1.3 Amendments
and Supplements. The Company shall prepare and file with the Commission such amendments, including post-effective amendments, and
supplements to such Registration Statement and the prospectus used in connection therewith as may be necessary to keep such Registration
Statement effective and in compliance with the provisions of the Securities Act until all Registrable Securities and other securities
covered by such Registration Statement have been disposed of in accordance with the intended method(s) of distribution set forth in such
Registration Statement or such securities have been withdrawn.

 

3.1.4 Notification.
After the filing of a Registration Statement, the Company shall promptly, and in no event more than two (2) business days after such filing,
notify the holders of Registrable Securities included in such Registration Statement of such filing, and shall further notify such holders
promptly and confirm such advice in writing in all events within two (2) business days of the occurrence of any of the following: (i)
when such Registration Statement becomes effective; (ii) when any post-effective amendment to such Registration Statement becomes effective;
(iii) the issuance or threatened issuance by the Commission of any stop order (and the Company shall take all actions required to prevent
the entry of such stop order or to remove it if entered); and (iv) any request by the Commission for any amendment or supplement to such
Registration Statement or any prospectus relating thereto or for additional information or of the occurrence of an event requiring the
preparation of a supplement or amendment to such prospectus so that, as thereafter delivered to the purchasers of the securities covered
by such Registration Statement, such prospectus will not contain an untrue statement of a material fact or omit to state any material
fact required to be stated therein or necessary to make the statements therein not misleading, and promptly make available to the holders
of Registrable Securities included in such Registration Statement any such supplement or amendment; except that before filing with the
Commission a Registration Statement or prospectus or any amendment or supplement thereto, including documents incorporated by reference,
the Company shall furnish to the holders of Registrable Securities included in such Registration Statement and to the legal counsel for
any such holders, copies of all such documents proposed to be filed sufficiently in advance of filing to provide such holders and legal
counsel with a reasonable opportunity to review such documents and comment thereon, and the Company shall not file any Registration Statement
or prospectus or amendment or supplement thereto, including documents incorporated by reference, to which such holders or their legal
counsel shall object.

 

3.1.5 State Securities
Laws Compliance. The Company shall 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 but for this paragraph or subject itself
to taxation in any such jurisdiction. 

 

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3.1.6 Agreements
for Disposition. The Company shall enter into customary agreements (including, if applicable, an underwriting agreement in customary
form) and take such other actions as are reasonably required in order to expedite or facilitate the disposition of such Registrable Securities.
The representations, warranties and covenants of the Company in any underwriting agreement which are made to or for the benefit of any
Underwriters, to the extent applicable, shall also be made to and for the benefit of the holders of Registrable Securities included in
such registration statement. No holder of Registrable Securities included in such registration statement shall be required to make any
representations or warranties in the underwriting agreement except, if applicable, with respect to such holder’s organization, good
standing, authority, title to Registrable Securities, lack of conflict of such sale with such holder’s material agreements and organizational
documents, and with respect to written information relating to such holder that such holder has furnished in writing expressly for inclusion
in such Registration Statement.

 

3.1.7 Cooperation.
The principal executive officer of the Company, the principal financial officer of the Company, the principal accounting officer of the
Company and all other officers and members of the management of the Company shall cooperate fully in any offering of Registrable Securities
hereunder, which cooperation shall include, without limitation, the preparation of the Registration Statement with respect to such offering
and all other offering materials and related documents, and participation in meetings with Underwriters, attorneys, accountants and potential
investors.

 

3.1.8 Records.
The Company shall make available for inspection by the holders of Registrable Securities included in such Registration Statement, any
Underwriter participating in any disposition pursuant to such registration statement and any attorney, accountant or other professional
retained by any holder of Registrable Securities included in such Registration Statement or any Underwriter, all financial and other records,
pertinent corporate documents and properties of the Company, as shall be necessary to enable them to exercise their due diligence responsibility,
and cause the Company’s officers, directors and employees to supply all information requested by any of them in connection with
such Registration Statement.

 

3.1.9 Opinions and
Comfort Letters. The Company shall furnish to each holder of Registrable Securities included in any Registration Statement a signed
counterpart, addressed to such holder, of (i) any opinion of counsel to the Company delivered to any Underwriter and (ii) any comfort
letter from the Company’s independent public accountants delivered to any Underwriter. In the event no legal opinion is delivered
to any Underwriter, the Company shall furnish to each holder of Registrable Securities included in such Registration Statement, at any
time that such holder elects to use a prospectus, an opinion of counsel to the Company to the effect that the Registration Statement containing
such prospectus has been declared effective and that no stop order is in effect.

 

3.1.10 Earnings Statement.
The Company shall comply with all applicable rules and regulations of the Commission and the Securities Act, and make available to its
shareholders, as soon as practicable, an earnings statement covering a period of twelve (12) months, which earnings statement shall satisfy
the provisions of Section 11(a) of the Securities Act and Rule 158 thereunder. 

 

3.1.11 Listing.
The Company shall use its best efforts to cause all Registrable Securities included in any registration to be listed on such exchanges
or otherwise designated for trading in the same manner as similar securities issued by the Company are then listed or designated or, if
no such similar securities are then listed or designated, in a manner satisfactory to the holders of a majority of the Registrable Securities
included in such registration.

 

3.1.12 Road Show.
If the registration involves the registration of Registrable Securities in an Underwritten Offering under Section 2.1.3 above involving
gross proceeds in excess of $15,000,000, the Company shall 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.

 

3.2 Obligation to
Suspend Distribution. Upon receipt of any notice from the Company of the happening of any event of the kind described in Section 3.1.4(iv),
or, in the case of a resale registration on Form S-3 pursuant to Section 2.3 hereof, upon any suspension by the Company, pursuant to a
written insider trading compliance program adopted by the Company’s Board of Directors, of the ability of all “insiders”
covered by such program to transact in the Company’s securities because of the existence of material non-public information, each
holder of Registrable Securities included in any registration shall immediately discontinue disposition of such Registrable Securities
pursuant to the Registration Statement covering such Registrable Securities until such holder receives the supplemented or amended prospectus
contemplated by Section 3.1.4(iv) or the restriction on the ability of “insiders” to transact in the Company’s securities
is removed, as applicable, and, if so directed by the Company, each such holder will deliver to the Company all written copies, other
than permanent file copies then in such holder’s possession, of the most recent prospectus covering such Registrable Securities
at the time of receipt of such notice.

 

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3.3 Registration Expenses.
The Company shall bear all costs and expenses incurred in connection with any Demand Registration pursuant to Section 2.1, any Piggy-Back
Registration pursuant to Section 2.2, and any registration on Form S-3 effected pursuant to Section 2.3, and all expenses incurred in
performing or complying with its other obligations under this Agreement, whether or not the Registration Statement becomes effective,
including, without limitation: (i) all registration and filing fees; (ii) fees and expenses of compliance with securities or “blue
sky” laws (including fees and disbursements of counsel in connection with blue sky qualifications of the Registrable Securities);
(iii) printing expenses; (iv) the Company’s internal expenses (including, without limitation, all salaries and expenses of its officers
and employees); (v) the fees and expenses incurred in connection with the listing of the Registrable Securities as required by Section
3.1.11; (vi) Financial Industry Regulatory Authority fees; (vii) fees and disbursements of counsel for the Company and fees and expenses
for independent certified public accountants retained by the Company (including the expenses or costs associated with the delivery of
any opinions or comfort letters requested pursuant to Section 3.1.9); (viii) the fees and expenses of any special experts retained by
the Company in connection with such registration; and (ix) the fees and expenses of one legal counsel selected by the holders of a majority-in-interest
of the Registrable Securities included in such registration. The Company shall have no obligation to pay any underwriting discounts or
selling commissions attributable to the Registrable Securities being sold by the holders thereof, which underwriting discounts or selling
commissions shall be borne by such holders. Additionally, in an underwritten offering, all selling shareholders and the Company shall
bear the expenses of the Underwriter pro rata in proportion to the respective amount of shares each is selling in such offering. 

 

3.4 Information.
The holders of Registrable Securities shall provide such information as may reasonably be requested by the Company, or the managing Underwriter,
if any, in connection with the preparation of any Registration Statement, including amendments and supplements thereto, in order to effect
the registration of any Registrable Securities under the Securities Act pursuant to Section 2 and in connection with the Company’s
obligation to comply with federal and applicable state securities laws. Additionally, each holder of Registrable Securities confirms and
agrees to comply with any and all properties and all prospectus delivery requirements under the Securities Act and rules and regulations
of the Commission thereunder.

 

4. INDEMNIFICATION
AND CONTRIBUTION.

 

4.1 Indemnification
by the Company. The Company agrees to indemnify and hold harmless each Investor and each other holder of Registrable Securities, and
each of their respective officers, employees, affiliates, directors, partners, members, attorneys and agents, and each person, if any,
who controls an Investor and each other holder of Registrable Securities (within the meaning of Section 15 of the Securities Act or Section
20 of the Exchange Act) (each, an “Investor Indemnified Party”), from and against any expenses, losses, judgments,
claims, damages or liabilities, whether joint or several, arising out of or based upon any untrue statement (or allegedly untrue statement)
of a material fact contained in any Registration Statement under which the sale of such Registrable Securities was registered under the
Securities Act, any preliminary prospectus, final prospectus or summary prospectus contained in the Registration Statement, or any amendment
or supplement to such Registration Statement, or arising out of or based upon any omission (or alleged omission) to state a material fact
required to be stated therein or necessary to make the statements therein not misleading, or any violation by the Company of the Securities
Act or any rule or regulation promulgated thereunder applicable to the Company and relating to action or inaction required of the Company
in connection with any such registration; and the Company shall promptly reimburse the Investor Indemnified Party for any legal and any
other expenses reasonably incurred by such Investor Indemnified Party in connection with investigating and defending any such expense,
loss, judgment, claim, damage, liability or action whether or not any such person is a party to any such claim or action and including
any and all legal and other expenses incurred in giving testimony or furnishing documents in response to a subpoena or otherwise; provided,
however, that the Company will not be liable in any such case to the extent that any such expense, loss, claim, damage or liability arises
out of or is based upon any untrue statement or allegedly untrue statement or omission or alleged omission made in such Registration Statement,
preliminary prospectus, final prospectus, or summary prospectus, or any such amendment or supplement, in reliance upon and in conformity
with information furnished to the Company, in writing, by such selling holder expressly for use therein. The Company also shall indemnify
any Underwriter of the Registrable Securities, their officers, affiliates, directors, partners, members and agents and each person who
controls such Underwriter on substantially the same basis as that of the indemnification provided above in this Section 4.1. 

  

    	 	8	 

     

    

 

4.2 Indemnification
by Holders of Registrable Securities. Subject to the limitations set forth in Section 4.4.3 hereof, each selling holder of Registrable
Securities will, in the event that any registration is being effected under the Securities Act pursuant to this Agreement of any Registrable
Securities held by such selling holder, indemnify and hold harmless the Company, each of its directors and officers and each Underwriter
(if any), and each other selling holder and each other person, if any, who controls another selling holder or such Underwriter within
the meaning of the Securities Act, against any losses, claims, judgments, damages or liabilities, whether joint or several, insofar as
such losses, claims, judgments, damages or liabilities (or actions in respect thereof) arise out of or are based upon any untrue statement
or allegedly untrue statement of a material fact contained in any Registration Statement under which the sale of such Registrable Securities
was registered under the Securities Act, any preliminary prospectus, final prospectus or summary prospectus contained in the Registration
Statement, or any amendment or supplement to the Registration Statement, or arise out of or are based upon any omission or the alleged
omission to state a material fact required to be stated therein or necessary to make the statement therein not misleading, if the statement
or omission was made in reliance upon and in conformity with information furnished in writing to the Company by such selling holder expressly
for use therein, and shall reimburse the Company, its directors and officers, and each other selling holder or controlling person for
any legal or other expenses reasonably incurred by any of them in connection with investigation or defending any such loss, claim, damage,
liability or action. Each selling holder’s indemnification obligations hereunder shall be several and not joint and shall be limited
to the amount of any net proceeds actually received by such selling holder.

 

4.3 Conduct of Indemnification
Proceedings. Promptly after receipt by any person of any notice of any loss, claim, damage or liability or any action in respect of
which indemnity may be sought pursuant to Section 4.1 or 4.2, such person (the “Indemnified Party”) shall, if
a claim in respect thereof is to be made against any other person for indemnification hereunder, notify such other person (the “Indemnifying
Party”) in writing of the loss, claim, judgment, damage, liability or action; provided, however, that the failure by the
Indemnified Party to notify the Indemnifying Party shall not relieve the Indemnifying Party from any liability which the Indemnifying
Party may have to such Indemnified Party hereunder, except and solely to the extent the Indemnifying Party is actually prejudiced by such
failure. If the Indemnified Party is seeking indemnification with respect to any claim or action brought against the Indemnified Party,
then the Indemnifying Party shall be entitled to participate in such claim or action, and, to the extent that it wishes, jointly with
all other Indemnifying Parties, to assume control of the defense thereof with counsel satisfactory to the Indemnified Party. After notice
from the Indemnifying Party to the Indemnified Party of its election to assume control of the defense of such claim or action, the Indemnifying
Party shall not be liable to the Indemnified Party for any legal or other expenses subsequently incurred by the Indemnified Party in connection
with the defense thereof other than reasonable costs of investigation; provided, however, that in any action in which both the Indemnified
Party and the Indemnifying Party are named as defendants, the Indemnified Party shall have the right to employ separate counsel (but no
more than one such separate counsel) to represent the Indemnified Party and its controlling persons who may be subject to liability arising
out of any claim in respect of which indemnity may be sought by the Indemnified Party against the Indemnifying Party, with the fees and
expenses of such counsel to be paid by such Indemnifying Party if, based upon the written advice of counsel of such Indemnified Party,
representation of both parties by the same counsel would be inappropriate due to actual or potential differing interests between them.
No Indemnifying Party shall, without the prior written consent of the Indemnified Party, consent to entry of judgment or effect any settlement
of any claim or pending or threatened proceeding in respect of which the Indemnified Party is or could have been a party and indemnity
could have been sought hereunder by such Indemnified Party, unless such judgment or settlement includes an unconditional release of such
Indemnified Party from all liability arising out of such claim or proceeding. 

 

4.4 Contribution.

 

4.4.1 If the indemnification
provided for in the foregoing Sections 4.1, 4.2 and 4.3 is unavailable to any Indemnified Party in respect of any loss, claim, damage,
liability or action referred to herein, then each such Indemnifying Party, in lieu of indemnifying such Indemnified Party, shall contribute
to the amount paid or payable by such Indemnified Party as a result of such loss, claim, damage, liability or action in such proportion
as is appropriate to reflect the relative fault of the Indemnified Parties and the Indemnifying Parties in connection with the actions
or omissions which resulted in such loss, claim, damage, liability or action, as well as any other relevant equitable considerations.
The relative fault of any Indemnified Party and any Indemnifying Party shall be determined by reference to, among other things, whether
the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information
supplied by such Indemnified Party or such Indemnifying Party and the parties’ relative intent, knowledge, access to information
and opportunity to correct or prevent such statement or omission.

 

    	 	9	 

     

    

 

4.4.2 The parties hereto
agree that it would not be just and equitable if contribution pursuant to this Section 4.4 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 the immediately preceding Section
4.4.1.

 

4.4.3 The amount paid or
payable by an Indemnified Party as a result of any loss, claim, damage, liability or action referred to in the immediately preceding paragraph
shall be deemed to include, subject to the limitations set forth above, any legal or other expenses incurred by such Indemnified Party
in connection with investigating or defending any such action or claim. Notwithstanding the provisions of this Section 4.4, no holder
of Registrable Securities shall be required to contribute any amount in excess of the dollar amount of the net proceeds (after payment
of any underwriting fees, discounts, commissions or taxes) actually received by such holder from the sale of Registrable Securities which
gave rise to such contribution obligation. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the
Securities Act) with respect to any action shall be entitled to contribution in such action from any person who was not guilty of such
fraudulent misrepresentation.

 

5. UNDERWRITING AND
DISTRIBUTION.

 

5.1 Rule 144.
The Company covenants that it shall file any reports required to be filed by it under the Securities Act and the Exchange Act and shall
take such further action as the holders of Registrable Securities may reasonably request, all to the extent required from time to time
to enable such holders to sell Registrable Securities without registration under the Securities Act within the limitation of the exemptions
provided by Rule 144 under the Securities Act, as such Rule may be amended from time to time, or any similar rule or regulation hereafter
adopted by the Commission. 

 

6. MISCELLANEOUS.

 

6.1 Other Registration
Rights. The Company represents and warrants that no person, other than the holders of the Registrable Securities, has any right to
require the Company to register any shares of the Company’s capital stock for sale or to include shares of the Company’s capital
stock in any registration filed by the Company for the sale of shares of capital stock for its own account or for the account of any other
person.

 

6.2 Assignment; No
Third Party Beneficiaries. 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. This Agreement and the rights, duties and obligations of the holders of Registrable Securities hereunder
may be freely assigned or delegated by such holder of Registrable Securities in conjunction with and to the extent of any transfer of
Registrable Securities by any such holder. This Agreement and the provisions hereof shall be binding upon and shall inure to the benefit
of each of the parties, to the permitted assigns of the Investors or holder of Registrable Securities or of any assignee of the Investors
or holder of Registrable Securities. This Agreement is not intended to confer any rights or benefits on any persons that are not party
hereto other than as expressly set forth in Article 4 and this Section 6.2.

 

6.3 Notices. All
notices, demands, requests, consents, approvals or other communications (collectively, “Notices”) required or
permitted to be given hereunder or which are given with respect to this Agreement shall be in writing and shall be personally served,
delivered by reputable air courier service with charges prepaid, or transmitted by hand delivery, telegram, telex or facsimile, addressed
as set forth below, or to such other address as such party shall have specified most recently by written notice. Notice shall be deemed
given on the date of service or transmission if personally served or transmitted by telegram, telex or facsimile; provided, that if such
service or transmission is not on a business day or is after normal business hours, then such notice shall be deemed given on the next
business day. Notice otherwise sent as provided herein shall be deemed given on the next business day following timely delivery of such
notice to a reputable air courier service with an order for next-day delivery.

 

To the Company:

 

Metal Sky Star Acquisition Corporation

132 West 31st Street, First Floor

New York, NY 10001

Attn: Chief Executive Officer

 

    	 	10	 

     

    

 

with a copy to:

 

Becker & Poliakoff LLP

45 Broadway, 17th Floor

New York, NY 10006

Attn: Bill Huo, Esq.

 

To an Investor to the address set forth below such Investor’s
name on Exhibit A hereto. 

 

6.4 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 that is valid and enforceable.

 

6.5 Counterparts.
This Agreement may be executed in multiple counterparts, each of which shall be deemed an original, and all of which taken together shall
constitute one and the same instrument. Delivery of a signed counterpart of this Agreement by facsimile or email/pdf transmission shall
constitute valid and sufficient delivery thereof.

 

6.6 Entire Agreement.
This Agreement (including all agreements entered into pursuant hereto and all certificates and instruments delivered pursuant hereto and
thereto) constitute the entire agreement of the parties with respect to the subject matter hereof and supersede all prior and contemporaneous
agreements, representations, understandings, negotiations and discussions between the parties, whether oral or written.

 

6.7 Modifications
and Amendments. No amendment, modification or termination of this Agreement shall be binding upon any party unless executed in writing
by such party.

 

6.8 Titles and Headings.
Titles and headings of sections of this Agreement are for convenience only and shall not affect the construction of any provision of this
Agreement.

 

6.9 Waivers and Extensions.
Any party to this Agreement may waive any right, breach or default which such party has the right to waive, provided that such waiver
will not be effective against the waiving party unless it is in writing, is signed by such party, and specifically refers to this Agreement.
Waivers may be made in advance or after the right waived has arisen or the breach or default waived has occurred. Any waiver may be conditional.
No waiver of any breach of any agreement or provision herein contained shall be deemed a waiver of any preceding or succeeding breach
thereof nor of any other agreement or provision herein contained. No waiver or extension of time for performance of any obligations or
acts shall be deemed a waiver or extension of the time for performance of any other obligations or acts.

  

6.10 Remedies Cumulative.
In the event that the Company fails to observe or perform any covenant or agreement to be observed or performed under this Agreement,
the Investor or any other holder of Registrable Securities may proceed to protect and enforce its rights by suit in equity or action at
law, whether for specific performance of any term contained in this Agreement or for an injunction against the breach of any such term
or in aid of the exercise of any power granted in this Agreement or to enforce any other legal or equitable right, or to take any one
or more of such actions, without being required to post a bond. None of the rights, powers or remedies conferred under this Agreement
shall be mutually exclusive, and each such right, power or remedy shall be cumulative and in addition to any other right, power or remedy,
whether conferred by this Agreement or now or hereafter available at law, in equity, by statute or otherwise. 

 

6.11 Governing Law.
This Agreement shall be governed by, interpreted under, and construed in accordance with the internal laws of the State of New York applicable
to agreements made and to be performed within the State of New York, without giving effect to any choice-of-law provisions thereof that
would compel the application of the substantive laws of any other jurisdiction. The Company irrevocably submits to the nonexclusive jurisdiction
of any New York State or United States Federal court sitting in The City of New York, Borough of Manhattan, over any suit, action or proceeding
arising out of or relating to this Agreement. The Company irrevocably waives, to the fullest extent permitted by law, any objection that
they may now or hereafter have to the laying of venue of any such suit, action or proceeding brought in such a court and any claim that
any such suit, action or proceeding brought in such a court has been brought in an inconvenient forum.

 

    	 	11	 

     

    

 

6.12 Waiver of Trial
by Jury. EACH PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES THE RIGHT TO A TRIAL
BY JURY IN ANY ACTION, SUIT, COUNTERCLAIM OR OTHER PROCEEDING (WHETHER BASED ON CONTRACT, TORT OR OTHERWISE) ARISING OUT OF, CONNECTED
WITH OR RELATING TO THIS AGREEMENT, THE TRANSACTIONS CONTEMPLATED HEREBY, OR THE ACTIONS OF THE INVESTOR IN THE NEGOTIATION, ADMINISTRATION,
PERFORMANCE OR ENFORCEMENT HEREOF.

 

 

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

 

    	 	12	 

     

    

 

IN WITNESS WHEREOF, the parties
have caused this Registration Rights Agreement to be executed and delivered by their duly authorized representatives as of the date first
written above.

 

	 	Metal Sky Star Acquisition Corporation
	 	 
	 	By: 	                 
	 	Name: 	 
	 	Title: 	Chief Executive Officer
	 	 
	 	M-Star Management Corporation
	 	 
	 	By: 	 
	 	Name: 	 
	 	Title:	 

 

    	 	13	 

     

    

 

EXHIBIT A

 

	Name and Address of Investor or Underwriter	 	Securities
	 	 	 
	
    M-Star Management Corporation

     
	 	
    [1,437,500] Ordinary Shares

    [250,000] Private Units 

 

    	 	14Exhibit 10.5

 

Metal Sky Star Acquisition Corporation

4th Floor, Harbour Place,

103 South Church Street,

P.O. Box 10240,

Grand Cayman

KY1-1002

Cayman Islands

 

September 22, 2021

 

M-Star Management Corporation

Craigmuir Chambers

Road Town

Tortola, VG 1110

British Virgin Islands

 

		RE:	Securities Subscription Agreement

 

Ladies and Gentlemen:

 

Metal Sky Star Acquisition Corporation, a Cayman Islands
exempted company (the “Company”), is pleased to accept the offer M-Star Management Corporation, a British Virgin Islands
business company (the “Subscriber” or “you”), has made to subscribe for and purchase 2,875,000 ordinary
shares (the “Shares”), $0.001 par value per share (the “Ordinary Shares”), up to 375,000 of which
are subject to complete or partial forfeiture by you if the underwriters of the Company’s initial public offering (“IPO”)
of units (“Units”) do not fully exercise their over-allotment option (the “Over-allotment Option”). 
The terms (this “Agreement”) on which the Company is willing to sell the Shares to the Subscriber, and the Company
and the Subscriber’s agreements regarding such Shares, are as follows:

 

 1. Purchase of Shares.

 

For the sum of $25,000 (the “Purchase
Price”), which the Company acknowledges as having previously been received by it, in cash, the Company hereby sells and issues
the Shares to the Subscriber, and the Subscriber hereby subscribes for and purchases the Shares from the Company, subject to forfeiture,
on the terms and subject to the conditions set forth in this Agreement.  Concurrently with the Subscriber’s execution of this
Agreement, the Company shall, at its option, deliver to the Subscriber a certificate registered in the Subscriber’s name representing
the Shares (the “Original Certificate”) or effect such delivery in book-entry form.  All references in this Agreement
to shares of the Company being forfeited shall take effect as surrenders for no consideration of such shares as a matter of Cayman Islands
law.

 

 2. Representations, Warranties and Agreements.

 

2.1 Subscriber’s
Representations, Warranties and Agreements.  To induce the Company to issue the Shares to the Subscriber, the Subscriber hereby
represents and warrants to the Company and agrees with the Company as follows:

 

2.1.1 No
Government Recommendation or Approval.  The Subscriber understands that no federal or state agency has passed upon or made any
recommendation or endorsement of the offering of the Shares.

 

2.1.2 No
Conflicts.  The execution, delivery and performance of this Agreement and the consummation by the Subscriber of the transactions
contemplated hereby do not violate, conflict with or constitute a default under (i) the formation and governing documents of the
Subscriber, (ii) any agreement, indenture or instrument to which the Subscriber is a party or (iii) any law, statute, rule or
regulation to which the Subscriber is subject, or any agreement, order, judgment or decree to which the Subscriber is subject.

 

    1

     

    

 

2.1.3 Organization
and Authority.  The Subscriber is a British Virgin Islands business company, validly existing and in good standing under the
laws of the British Virgin Islands and possesses all requisite power and authority necessary to carry out the transactions contemplated
by this Agreement.  Upon execution and delivery by you, this Agreement is a legal, valid and binding agreement of Subscriber, enforceable
against Subscriber in accordance with its terms, except as such enforceability may be limited by applicable bankruptcy, insolvency, fraudulent
conveyance or similar laws affecting the enforcement of creditors’ rights generally and subject to general principles of equity
(regardless of whether enforcement is sought in a proceeding at law or in equity).

 

2.1.4 Experience,
Financial Capability and Suitability.  Subscriber is: (i) sophisticated in financial matters and is able to evaluate
the risks and benefits of the investment in the Shares and (ii) able to bear the economic risk of its investment in the Shares for
an indefinite period of time because the Shares have not been registered under the Securities Act (as defined below) and therefore cannot
be sold unless subsequently registered under the Securities Act or an exemption from such registration is available.  Subscriber
is capable of evaluating the merits and risks of its investment in the Company and has the capacity to protect its own interests. 
Subscriber must bear the economic risk of this investment until the Shares are sold pursuant to:  (i) an effective registration
statement under the Securities Act or (ii) an exemption from registration available with respect to such sale.  Subscriber is
able to bear the economic risks of an investment in the Shares and to afford a complete loss of Subscriber’s investment in the Shares.

 

2.1.5 Access
to Information; Independent Investigation.  Prior to the execution of this Agreement, the Subscriber has had the opportunity
to ask questions of and receive answers from representatives of the Company concerning an investment in the Company, as well as the finances,
operations, business and prospects of the Company, and the opportunity to obtain additional information to verify the accuracy of all
information so obtained.  In determining whether to make this investment, Subscriber has relied solely on Subscriber’s own
knowledge and understanding of the Company and its business based upon Subscriber’s own due diligence investigation and the information
furnished pursuant to this paragraph.  Subscriber understands that no person has been authorized to give any information or to make
any representations which were not furnished pursuant to this Section 2 and Subscriber has not relied on any other representations
or information in making its investment decision, whether written or oral, relating to the Company, its operations and/or its prospects.

 

2.1.6 Private
Offering.  The Subscriber represents that it is (a) an “accredited investor” as such term is defined in Rule 501(a) of
Regulation D under the Securities Act of 1933, as amended (the “Securities Act”) or (b) not a “U.S. Person”
as defined in Rule 902 of Regulation S (“Regulation S”) under the Securities Act. Subscriber acknowledges the sale contemplated
hereby is being made in reliance on a private placement exemption to “Accredited Investors” within the meaning of Section 501(a) of
Regulation D under the Securities Act or similar exemptions under state law or to a non-U.S. Person under Regulation S. Accordingly, the
Shares will be “restricted securities” within the meaning of Rule 144(a)(3) under the Securities Act, and therefore
may not be offered, pledged or sold by Subscriber, directly or indirectly, in the United States without registration under United States
federal and state securities laws or an exemption therefrom and Subscriber understands the certificates representing the Shares will contain
a legend in respect of such restrictions. The Subscriber did not decide to enter into the Agreement as a result of any general solicitation
or general advertising within the meaning of Rule 502 under the Securities Act or as a result of any “directed selling efforts”
within the meaning of Rule 902 under Regulation S.

 

2.1.7 Investment
Purposes.  The Subscriber is purchasing the Shares solely for investment purposes, for the Subscriber’s own account and
not for the account or benefit of any other person, and not with a view towards the distribution or dissemination thereof.  The Subscriber
did not decide to enter into this Agreement as a result of any general solicitation or general advertising within the meaning of Rule 502
under the Securities Act.

 

2.1.8 Restrictions
on Transfer; Shell Company.  The Subscriber understands the Shares are being offered in a transaction not involving a public
offering within the meaning of the Securities Act. The Shares have not been registered under the Securities Act, and, if in the future
the Subscriber decides to offer, resell, pledge or otherwise transfer the Shares, such Shares may be offered, resold, pledged or otherwise
transferred only (A) in accordance with the provisions of Regulation S (Rule 901 through 905), (B) pursuant to a registration
under the Securities Act, or (C) pursuant to an available exemption from registration. Subscriber agrees that if any transfer of
its Shares or any interest therein is proposed to be made, as a condition precedent to any such transfer, Subscriber may be required to
deliver to the Company an opinion of counsel satisfactory to the Company. Absent registration or an exemption, the Subscriber agrees not
to resell the Shares. Subscriber further acknowledges that because the Company is a shell company and Rule 144 may not be available
to the Subscriber for the resale of the Shares until one year following the consummation of a business combination despite technical compliance
with the requirements of Rule 144 and the release or waiver of any contractual transfer restrictions.

 

    2

     

    

 

2.1.9 No
Governmental Consents.  No governmental, administrative or other third party consents or approvals are required, necessary or
appropriate on the part of Subscriber in connection with the transactions contemplated by this Agreement.

 

2.2 Company’s
Representations, Warranties and Agreements.  To induce the Subscriber to purchase the Shares, the Company hereby represents and
warrants to the Subscriber and agrees with the Subscriber as follows:

 

2.2.1 Organization
and Corporate Power.  The Company is a Cayman Islands exempted company and is qualified to do business in every jurisdiction
in which the failure to so qualify would reasonably be expected to have a material adverse effect on the financial condition, operating
results or assets of the Company.  The Company possesses all requisite corporate power and authority necessary to carry out the transactions
contemplated by this Agreement.

 

2.2.2 No
Conflicts.  The execution, delivery and performance of this Agreement and the consummation by the Company of the transactions
contemplated hereby do not violate, conflict with or constitute a default under (i) the Memorandum and Articles of Association of
the Company, (ii) any agreement, indenture or instrument to which the Company is a party or (iii) any law, statute, rule or
regulation to which the Company is subject, or any agreement, order, judgment or decree to which the Company is subject.

 

2.2.3 Title
to Shares.  Upon issuance in accordance with, and payment pursuant to, the terms hereof, and registration on the register of
members of the Company, the Shares will be duly and validly issued, fully paid and nonassessable.  Upon issuance in accordance with,
and payment pursuant to, the terms hereof the Subscriber will have or receive good title to the Shares, free and clear of all liens, claims
and encumbrances of any kind, other than (a) transfer restrictions hereunder and under the other agreements to which the Shares may
be subject, (b) transfer restrictions under federal and state securities laws, and (c) liens, claims or encumbrances imposed
due to the actions of the Subscriber.

 

2.2.4 No
Adverse Actions.  There are no actions, suits, investigations or proceedings pending, threatened against or affecting the Company
which:  (i) seek to restrain, enjoin, prevent the consummation of or otherwise affect the transactions contemplated by this
Agreement or (ii) question the validity or legality of any transactions or seeks to recover damages or to obtain other relief in
connection with any transactions.

 

 3. Forfeiture of Shares.

 

3.1 Partial
or No Exercise of the Over-allotment Option.  In the event the Over-allotment Option granted to the underwriters of the IPO is
not exercised in full, the Subscriber acknowledges and agrees that it (and, if applicable, any transferee of Shares) shall forfeit any
and all rights to such number of Shares (up to an aggregate of 385,000
Shares and pro rata based upon the percentage of the Over-allotment Option exercised) such that immediately following such forfeiture,
the Subscriber (and any such transferees) will own an aggregate number of Shares (not including Ordinary Shares underlying the private
placement units to be issued to the Subscriber or Ordinary Shares issuable upon exercise of any warrants or any securities purchased by
Subscriber in the IPO or in the aftermarket) equal to 20% of the issued and outstanding Ordinary Shares immediately following the IPO.

 

3.2 Termination
of Rights as Shareholder.  If any of the Shares are forfeited in accordance with this Section 3, then after such time the
Subscriber (or successor in interest), shall no longer have any rights as a holder of such forfeited Shares, and the Company shall take
such action as is appropriate to cancel such forfeited Shares.

 

3.3 Share
Certificates.  In the event an adjustment to the Original Certificate, if any, is required pursuant to this Section 3, then
the Subscriber shall return such Original Certificate to the Company or its designated agent as soon as practicable upon its receipt of
notice from the Company advising Subscriber of such adjustment, following which a new certificate (the “New Certificate”),
if any, shall be issued in such amount representing the adjusted number of Shares held by the Subscriber.  The New Certificate, if
any, shall be returned to the Subscriber as soon as practicable.  Any such adjustment for any uncertificated securities held by the
Subscriber shall be made in book-entry form.

 

    3

     

    

 

 4. Waiver of Liquidation Distributions; Redemption Rights.

 

In connection with the Shares purchased pursuant
to this Agreement, the Subscriber hereby waives any and all right, title, interest or claim of any kind in or to any distributions by
the Company from the trust account which will be established for the benefit of the Company’s public shareholders and into which
substantially all of the proceeds of the IPO will be deposited (the “Trust Account”), in the event of a liquidation of the
Company upon the Company’s failure to timely complete an initial business combination.  For purposes of clarity, in the event
the Subscriber purchases securities in the IPO or in the aftermarket, any Ordinary Shares so purchased shall be eligible to receive any
liquidating distributions by the Company.  However, in no event will the Subscriber have the right to redeem any Ordinary Shares
held by it into funds held in the Trust Account upon the successful completion of an initial business combination.

 

 5. Restrictions on Transfer.

 

5.1 Securities
Law Restrictions.  In addition to any restrictions to be contained in that certain letter agreement (commonly known as an “Insider
Letter”) dated on or prior to the closing of the IPO by and between Subscriber and the Company, Subscriber agrees not to sell,
transfer, pledge, hypothecate or otherwise dispose of all or any part of the Shares unless, prior thereto (a) a registration statement
on the appropriate form under the Securities Act and applicable state securities laws with respect to the Shares proposed to be transferred
shall then be effective or (b) the Company has received an opinion from counsel reasonably satisfactory to the Company, that such
registration is not required because such transaction is exempt from registration under the Securities Act and the rules promulgated
by the Securities and Exchange Commission thereunder and with all applicable state securities laws.

 

5.2 Lock-up. 
Subscriber acknowledges that the Shares will be subject to lock-up provisions (the “Lock-up”) contained in the Insider
Letter.  Pursuant to the Insider Letter, Subscriber will agree (subject to certain exceptions) not to sell, transfer, pledge, hypothecate
or otherwise dispose of (i) 50% of the Shares until the earlier to occur of:  (A) six months after the completion of the
Company’s initial business combination or (B) the date on which the last sale price of the Ordinary Shares equals or exceeds
$12.50 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 Company’s initial business combination and (ii) the
remaining 50% of the Shares until six months after the completion of the Company’s initial business combination.  Notwithstanding
the foregoing, the aforesaid restrictions shall lapse if, subsequent to the consummation of the Company’s initial business combination,
the Company consummates a subsequent liquidation, merger, stock exchange or other similar transaction which results in all of the Company’s
shareholders having the right to exchange their Ordinary Shares for cash, securities or other property.

 

5.3 Restrictive
Legends.  All certificates representing the Shares shall have endorsed thereon legends substantially as follows:

 

“THESE SECURITIES (i) HAVE NOT BEEN REGISTERED
UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND THESE SECURITIES MAY NOT BE OFFERED,
SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT (A) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT FILED UNDER THE SECURITIES ACT,
(B) TO A NON-U.S. PERSON IN AN OFFSHORE TRANSACTION IN ACCORDANCE WITH RULE 903 OR RULE 904 OF REGULATION S UNDER THE SECURITIES
ACT, (C) PURSUANT TO THE RESALE LIMITATIONS SET FORTH IN RULE 905 OF REGULATIONS S UNDER THE SECURITIES ACT, (D) PURSUANT TO
AN EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT (IF AVAILABLE) OR (E) PURSUANT TO ANY OTHER EXEMPTION
FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, IN EACH CASE IN ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS OF ANY STATE
OF THE UNITED STATES OR ANY OTHER JURISDICTION. HEDGING TRANSACTIONS INVOLVING THESE SECURITIES MAY NOT BE CONDUCTED UNLESS IN COMPLIANCE
WITH THE SECURITIES ACT.”

 

    4

     

    

 

“THE SECURITIES REPRESENTED BY THIS CERTIFICATE
ARE SUBJECT TO A LOCKUP AND MAY NOT BE OFFERED, SOLD, TRANSFERRED, PLEDGED OR OTHERWISE DISPOSED DURING THE TERM OF THE LOCKUP.”

 

5.4 Additional
Shares or Substituted Securities.  In the event of the declaration of a share dividend, the declaration of an extraordinary dividend
payable in a form other than Shares, a spin-off, a share split, an adjustment in conversion ratio, a recapitalization or a similar transaction
affecting the Company’s outstanding Ordinary Shares without receipt of consideration, any new, substituted or additional securities
or other property which are by reason of such transaction distributed with respect to any Shares subject to this Section 5 or into
which such Shares thereby become convertible shall immediately be subject to this Section 5 and Section 3.  Appropriate
adjustments to reflect the distribution of such securities or property shall be made to the number of Ordinary Shares subject to this
Section 5 and Section 3.

 

5.5 Registration
Rights.  Subscriber acknowledges that the Shares are being purchased pursuant to an exemption from the registration requirements
of the Securities Act and will become freely tradable only after certain conditions are met or they are registered pursuant to a registration
rights agreement to be entered into with the Company prior to the closing of the IPO (the “Registration Rights Agreement”).

 

 6. Other Agreements.

 

6.1 Further
Assurances.  Subscriber agrees to execute such further instruments and to take such further action as may reasonably be necessary
to carry out the intent of this Agreement.

 

6.2 Notices. 
All notices, statements or other documents which are required or contemplated by this Agreement shall be:  (i) in writing and
delivered personally or sent by first class registered or certified mail, overnight courier service or facsimile or electronic transmission
to the address designated in writing, (ii) by facsimile to the number most recently provided to such party or such other address
or fax number as may be designated in writing by such party and (iii) by electronic mail, to the electronic mail address most recently
provided to such party or such other electronic mail address as may be designated in writing by such party.  Any notice or other
communication so transmitted shall be deemed to have been given on the day of delivery, if delivered personally, on the business day following
receipt of written confirmation, if sent by facsimile or electronic transmission, one (1) business day after delivery to an overnight
courier service or five (5) days after mailing if sent by mail.

 

6.3 Entire
Agreement.  This Agreement, together with that certain Insider Letter to be entered into between Subscriber and the Company and
the Registration Rights Agreement, each substantially in the form to be filed as an exhibit to the Registration Statement, embodies the
entire agreement and understanding between the Subscriber and the Company with respect to the subject matter hereof and supersedes all
prior oral or written agreements and understandings relating to the subject matter hereof.

 

6.4 Modifications
and Amendments.  The terms and provisions of this Agreement may be modified or amended only by written agreement executed by
all parties hereto.

 

6.5 Waivers
and Consents.  The terms and provisions of this Agreement may be waived, or consent for the departure therefrom granted, only
by written document executed by the party entitled to the benefits of such terms or provisions.  No such waiver or consent shall
be deemed to be or shall constitute a waiver or consent with respect to any other terms or provisions of this Agreement, whether or not
similar.  Each such waiver or consent shall be effective only in the specific instance and for the purpose for which it was given,
and shall not constitute a continuing waiver or consent.

 

    5

     

    

 

6.6 Assignment. 
The rights and obligations under this Agreement may not be assigned by either party hereto without the prior written consent of the other
party.

 

6.7 Benefit. 
All statements, representations, warranties, covenants and agreements in this Agreement shall be binding on the parties hereto and shall
inure to the benefit of the respective successors and permitted assigns of each party hereto.  Nothing in this Agreement shall be
construed to create any rights or obligations except among the parties hereto, and no person or entity shall be regarded as a third-party
beneficiary of this Agreement.

 

6.8 Governing
Law. This Agreement and the rights and obligations of the parties hereunder shall be construed in accordance with and governed
by the laws of the State of New York applicable to contracts wholly performed within the borders of such state, without giving effect
to the conflict of law principles thereof.

 

6.9 Severability. 
In the event that any court of competent jurisdiction shall determine that any provision, or any portion thereof, contained in this Agreement
shall be unreasonable or unenforceable in any respect, then such provision shall be deemed limited to the extent that such court deems
it reasonable and enforceable, and as so limited shall remain in full force and effect.  In the event that such court shall deem
any such provision, or portion thereof, wholly unenforceable, the remaining provisions of this Agreement shall nevertheless remain in
full force and effect.

 

6.10  No
Waiver of Rights, Powers and Remedies.  No failure or delay by a party hereto in exercising any right, power or remedy under
this Agreement, and no course of dealing between the parties hereto, shall operate as a waiver of any such right, power or remedy of such
party.  No single or partial exercise of any right, power or remedy under this Agreement by a party hereto, nor any abandonment or
discontinuance of steps to enforce any such right, power or remedy, shall preclude such party from any other or further exercise thereof
or the exercise of any other right, power or remedy hereunder.  The election of any remedy by a party hereto shall not constitute
a waiver of the right of such party to pursue other available remedies.  No notice to or demand on a party not expressly required
under this Agreement shall entitle the party receiving such notice or demand to any other or further notice or demand in similar or other
circumstances or constitute a waiver of the rights of the party giving such notice or demand to any other or further action in any circumstances
without such notice or demand.

 

6.11  Survival
of Representations and Warranties.  All representations and warranties made by the parties hereto in this Agreement or in any
other agreement, certificate or instrument provided for or contemplated hereby, shall survive the execution and delivery hereof and any
investigations made by or on behalf of the parties.

 

6.12  No
Broker or Finder.  Each of the parties hereto represents and warrants to the other that no broker, finder or other financial
consultant has acted on its behalf in connection with this Agreement or the transactions contemplated hereby in such a way as to create
any liability on the other.  Each of the parties hereto agrees to indemnify and save the other harmless from any claim or demand
for commission or other compensation by any broker, finder, financial consultant or similar agent claiming to have been employed by or
on behalf of such party and to bear the cost of legal expenses incurred in defending against any such claim.

 

6.13  Headings
and Captions.  The headings and captions of the various subdivisions of this Agreement are for convenience of reference only
and shall in no way modify or affect the meaning or construction of any of the terms or provisions hereof.

 

6.14  Counterparts. 
This Agreement may be executed in one or more counterparts, all of which when taken together shall be considered one and the same agreement
and shall become effective when counterparts have been signed by each party and delivered to the other party, it being understood that
both parties need not sign the same counterpart.  In the event that any signature is delivered by facsimile transmission or any other
form of electronic delivery, such signature shall create a valid and binding obligation of the party executing (or on whose behalf such
signature is executed) with the same force and effect as if such signature page were an original thereof.

 

    6

     

    

 

6.15  Construction. 
The parties hereto have participated jointly in the negotiation and drafting of this Agreement.  If an ambiguity or question of intent
or interpretation arises, this Agreement will be construed as if drafted jointly by the parties hereto and no presumption or burden of
proof will arise favoring or disfavoring any party hereto because of the authorship of any provision of this Agreement.  The words
 “include,” “includes,” and “including” will be deemed to be followed by “without
limitation.”  Pronouns in masculine, feminine, and neuter genders will be construed to include any other gender, and words
in the singular form will be construed to include the plural and vice versa, unless the context otherwise requires.  The words “this
Agreement,” “herein,” “hereof,” “hereby,” “hereunder,”
and words of similar import refer to this Agreement as a whole and not to any particular subdivision unless expressly so limited. 
The parties hereto intend that each representation, warranty, and covenant contained herein will have independent significance. 
If any party hereto has breached any representation, warranty, or covenant contained herein in any respect, the fact that there exists
another representation, warranty or covenant relating to the same subject matter (regardless of the relative levels of specificity) which
such party hereto has not breached will not detract from or mitigate the fact that such party hereto is in breach of the first representation,
warranty, or covenant.

 

6.16  Mutual
Drafting.  This Agreement is the joint product of the Subscriber and the Company and each provision hereof has been subject to
the mutual consultation, negotiation and agreement of such parties and shall not be construed for or against any party hereto.

 

 7. Voting and Tender of Shares.

 

Subscriber agrees to vote the Shares in favor of
an initial business combination that the Company negotiates and submits for approval to the Company’s shareholders and shall not
seek redemption with respect to any of the Shares.  Additionally, the Subscriber agrees not to tender any Shares in connection with
a tender offer presented to the Company’s shareholders in connection with an initial business combination negotiated by the Company.

 

 8. Indemnification.

 

Each party shall indemnify the other against any
loss, cost or damages (including reasonable attorney’s fees and expenses) incurred as a result of such party’s breach of any
representation, warranty, covenant or agreement in this Agreement.

 

[Signature Page Follows]

 

    7

     

    

 

If the foregoing accurately sets forth our understanding
and agreement, please sign the enclosed copy of the Agreement and return it to us.

 

	 	Very truly yours,
	 	 
	 	Metal Sky Star Acquisition Corporation
	 	 	
    

	 	By:	      
	 	 	Name: Man Chak Leung
	 	 	Title: Director 
	 	 	 
	 	 	 
	 	Accepted and agreed, September 22, 2021
	 	 
	 	
    M-Star Management Corporation

	 	 	 
	 	By:	 
	 	 	Name: Man Chak Leung
	 	 	Title: Director

 

 

[Signature page to Subscription Agreement]

 

    8

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