Document:

Exhibit 4.1

 

WARRANT AGREEMENT

 

between

 

CACTUS ACQUISITION CORP. 1 LIMITED

 

and

 

CONTINENTAL STOCK TRANSFER & TRUST COMPANY

 

THIS WARRANT AGREEMENT (this
“Agreement”), dated as of November 2, 2021, is by and between Cactus Acquisition Corp. 1 Limited, a Cayman Islands
exempted company (the “Company”), and Continental Stock Transfer & Trust Company, a New York corporation,
as warrant agent (the “Warrant Agent”).

 

WHEREAS, in connection with the
Company’s Offering (as defined below), the Company entered into that certain Private Warrants Purchase Agreement, dated as of November
2, 2021 (the “Private Warrants Purchase Agreement”), with Cactus Healthcare Management LP, a Delaware limited
partnership (the “Sponsor”), pursuant to which the Sponsor agreed to purchase, simultaneously with the closing
of the Offering, an aggregate of 4,866,666 warrants (each, a “Warrant”) at a purchase price of $1.50 per Warrant,
for a purchase price of $7,300,000, in the aggregate. Each Warrant entitles the holder thereof to purchase one Class A ordinary share
of the Company, par value $0.0001 (“Class A ordinary share”), at a price per share of $11.50, subject to adjustment
and to the further terms and limitations described herein. Each Warrant privately sold to the Sponsor bears the legend set forth in Exhibit
B hereto and is referred to herein as a “Private Placement Warrant”;

 

WHEREAS, in order to finance
the Company’s transaction costs in connection with an intended initial Business Combination (as defined below), the Sponsor or an
affiliate of the Sponsor or certain of the Company’s officers and directors may, but are not obligated to, loan the Company funds
as the Company may require, of which up to $1,500,000 of such loans may be convertible into up to an additional 1,500,000 Private Placement
Warrants at a price of $1.00 per Private Placement Warrant;

 

WHEREAS, the Company is engaged
in an initial public offering (the “Offering”) of its Units, each such Unit comprised of one Class A ordinary
share and one-third warrant (the “Public Warrants” and, together with the Private Placement Warrants, the “Warrants”),
and, in connection therewith, has determined to issue and deliver up to 5,500,000 Public Warrants (plus an additional 825,000 Public Warrants
that will be sold as a result of the underwriters’ exercise of their over-allotment option in the Offering (the “Over-allotment
Option”)) to public investors in the Offering. Each Public Warrant entitles the holder thereof to purchase one Class A ordinary
share at a price of $11.50 per share, subject to adjustment, terms and limitations as described herein;

 

WHEREAS, the Company has filed
with the Securities and Exchange Commission (the “Commission”) registration statements on Form S-1, File No.’s
333-258042 and 333-260567 (the “Registration Statements”) and prospectus (the “Prospectus”),
for the registration, under the Securities Act of 1933, as amended (the “Securities Act”), of the Units, the
Public Warrants and the Class A ordinary shares included in the Units;

 

 WHEREAS, the Company desires
the Warrant Agent to act on behalf of the Company, and the Warrant Agent is willing to so act, in connection with the issuance, registration,
transfer, exchange, redemption and exercise of the Warrants;

 

     

     

    

 

WHEREAS, the Company desires
to provide for the form and provisions of the Warrants, the terms upon which they shall be issued and exercised, and the respective rights,
limitation of rights, and immunities of the Company, the Warrant Agent and the holders of the Warrants; and

 

WHEREAS, all acts and things
have been done and performed which are necessary to make the Warrants, when executed on behalf of the Company and countersigned by or
on behalf of the Warrant Agent, as provided herein, the valid, binding and legal obligations of the Company, and to authorize the execution
and delivery of this Agreement.

 

NOW, THEREFORE, in consideration
of the mutual agreements herein contained, the parties hereto agree as follows:

 

1.      Appointment
of Warrant Agent. The Company hereby appoints the Warrant Agent to act as agent for the Company for the Warrants, and the Warrant
Agent hereby accepts such appointment and agrees to perform the same in accordance with the terms and conditions set forth in this Agreement.

 

2.      Warrants.

 

2.1.     Form
of Warrant. Each Warrant shall initially be issued in registered form only.

 

2.2.     Effect
of Countersignature. If a physical certificate is issued, unless and until countersigned by the Warrant Agent pursuant to this Agreement,
a Warrant shall be invalid and of no effect and may not be exercised by the holder thereof.

 

2.3.     Registration.

 

2.3.1.   Warrant
Register. The Warrant Agent shall maintain books (the “Warrant Register”), for the registration of original
issuance and the registration of transfer of the Warrants. Upon the initial issuance of the Warrants, the Warrant Agent shall issue and
register the Warrants in the names of the respective holders thereof in such denominations and otherwise in accordance with instructions
delivered to the Warrant Agent by the Company. Ownership of beneficial interests in the Public Warrants shall be shown on, and the transfer
of such ownership shall be effected through, records maintained by institutions that have accounts with The Depository Trust Company (the
“Depositary”) (such institution, with respect to a Warrant in its account, a “Participant”).

 

If the Depositary subsequently
ceases to make its book-entry settlement system available for the Public Warrants, the Company may instruct the Warrant Agent regarding
making other arrangements for book-entry settlement. In the event that the Public Warrants are not eligible for, or it is no longer necessary
to have the Public Warrants available in, book-entry form, the Warrant Agent shall provide written instructions to the Depositary to deliver
to the Warrant Agent for cancellation each book-entry Public Warrant, and the Company shall instruct the Warrant Agent to deliver to the
Depositary definitive certificates in physical form evidencing such Warrants which shall be in the form annexed hereto as Exhibit
A.

 

Physical certificates, if issued,
shall be signed by, or bear the facsimile signature of, the Chairman of the Board, Chief Executive Officer, Chief Financial Officer, Chief
Operating Officer, Secretary or other principal officer of the Company. In the event the person whose facsimile signature has been placed
upon any Warrant shall have ceased to serve in the capacity in which such person signed the Warrant before such Warrant is issued, it
may be issued with the same effect as if he or she had not ceased to be such at the date of issuance.

 

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2.3.2.   Registered
Holder. Prior to due presentment for registration of transfer of any Warrant, the Company and the Warrant Agent may deem and treat
the person in whose name such Warrant is registered in the Warrant Register (the “Registered Holder”) as the
absolute owner of such Warrant and of each Warrant represented thereby (notwithstanding any notation of ownership or other writing on
any physical certificate made by anyone other than the Company or the Warrant Agent), for the purpose of any exercise thereof, and for
all other purposes, and neither the Company nor the Warrant Agent shall be affected by any notice to the contrary.

 

2.4.     Detachability
of Warrants. The Class A ordinary shares and Public Warrants comprising the Units shall begin separate trading on the 52nd day following
the date of the Prospectus or, if such 52nd day is not on a day, other than a Saturday, Sunday or federal holiday, on which banks in New
York City are generally open for normal business (a “Business Day”), then on the immediately succeeding Business
Day following such date, or earlier (the “Detachment Date”) with the consent of each of Oppenheimer & Co.
and Moelis & Company LLC, the co-lead underwriters for the Offering, but in no event shall the Class A ordinary shares and the Public
Warrants comprising the Units be separately traded until (A) the Company has filed a current report on Form 8-K with the Commission containing
an audited balance sheet reflecting the receipt by the Company of the gross proceeds of the Offering, including the proceeds then received
by the Company from the exercise by the underwriters of the Over-allotment Option, if it is exercised prior to the filing of the Form
8-K, and (B) the Company issues a press release announcing when such separate trading shall begin.

 

2.5.     No
Fractional Warrants. The Company shall not issue fractional Warrants. If for any reason a holder of Warrants would be entitled to
receive a fractional Warrant, the Company shall round down to the nearest whole number the number of Warrants to be issued to such holder.

 

2.6.     Private
Placement Warrants. The Private Placement Warrants shall be identical to the Public Warrants, except that so long as they are held
by the Sponsor or any of its Permitted Transferees (as defined below): (i) the Private Placement Warrants (including the Class A ordinary
shares issuable upon exercise of the Private Placement Warrants) may not be transferred, assigned or sold until thirty (30) days after
the completion by the Company of an initial Business Combination, and (ii) the Private Placement Warrants shall not be redeemable by the
Company; provided, however, that in the case of clause (i), the Private Placement Warrants and any Class A ordinary
shares held by the Sponsor or any of its Permitted Transferees and issued upon exercise of the Private Placement Warrants may be transferred
by the holders thereof:

 

(a)       to
the Company’s officers or directors, any affiliates or family members of any of the Company’s officers or directors, any members
of the Sponsor or any affiliates of the Sponsor;

 

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

 

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

 

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

 

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

 

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

 

(g)       by
virtue of the laws of the Cayman Islands or the Sponsor’s exempted limited partnership agreement, as amended from time to time,
upon termination, winding-up and liquidation of the Sponsor; and

 

(h)       in
the event of the Company’s completion of a liquidation, merger, amalgamation, share exchange, reorganization or other similar transaction
which results in all of the Company’s shareholders having the right to exchange their Class A ordinary shares for cash, securities
or other property subsequent to the completion of the Company’s initial Business Combination; provided, however,
that, in the case of clauses (a) through (e) and (g), these permitted transferees (the “Permitted Transferees”)
must enter into a written agreement with the Company agreeing to be bound by the transfer restrictions in this Agreement.

 

3.      Terms
and Exercise of Warrants.

 

3.1.     Warrant
Price. Each whole Warrant (if in certificated form, when countersigned by the Warrant Agent), shall entitle the Registered Holder
thereof, subject to the provisions of such Warrant and of this Agreement, to purchase from the Company the number of Class A ordinary
shares stated therein, at the price of $11.50 per share, subject to the adjustments provided in Section ‎4 hereof
and in the last sentence of this Section ‎3.1. The term “Warrant Price” as used in this Agreement
shall mean the price per share at which Class A ordinary shares may be purchased at the time a Warrant is exercised. The Company in its
sole discretion may lower the Warrant Price at any time prior to the Expiration Date (as defined below) for a period of not less than
twenty (20) Business Days, provided that the Company shall provide at least twenty (20) days prior written notice of such reduction to
Registered Holders of the Warrants and, provided further that any such reduction shall be identical among all of the Warrants.

 

3.2.      Duration
of Warrants. A Warrant may be exercised only during the period (the “Exercise Period”) commencing on the
date that is thirty (30) days after the first date on which the Company completes a merger, amalgamation, share exchange, asset acquisition,
share purchase, reorganization or similar business combination, involving the Company and one or more businesses (a “Business
Combination”), and terminating at 5:00 p.m., New York City time, on the earliest to occur of: (x) the date that is five
(5) years after the date on which the Company completes its initial Business Combination, (y) the liquidation of the Company in accordance
with the Company’s amended and restated memorandum and articles of association, as amended from time to time, if the Company fails
to complete a Business Combination, or (z) other than with respect to the Private Placement Warrants then held by the Sponsor or any of
its Permitted Transferees, the Redemption Date (as defined below) as provided in Section ‎6.2 hereof
(the “Expiration Date”); provided, however, that the exercise of any Warrant shall be
subject to the satisfaction of any applicable conditions, as set forth in subsection ‎3.3.2 below with
respect to an effective registration statement. Except with respect to the right to receive the Redemption Price (as defined below) (other
than with respect to a Private Placement Warrant then held by the Sponsor or any of its Permitted Transferees) in the event of a redemption
(as set forth in Section ‎6 hereof), each outstanding Warrant (other than a Private Placement Warrant
held by the Sponsor or any of its Permitted Transferees in the event of a redemption) not exercised on or before the Expiration Date shall
become void, and all rights thereunder and all rights in respect thereof under this Agreement shall cease at 5:00 p.m., New York City
time, on the Expiration Date. The term “outstanding” as used in this Agreement with respect to any securities shall mean securities
that are issued and outstanding. The Company in its sole discretion may extend the duration of the Warrants by delaying the Expiration
Date; provided, that the Company shall provide at least twenty (20) days prior written notice of any such extension to Registered
Holders of the Warrants and, provided further that any such extension shall be identical in duration among all the Warrants.

 

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3.3.      Exercise
of Warrants.

 

3.3.1.   Payment.
Subject to the provisions of the Warrant and this Agreement, a Warrant, (if in certificated form, when countersigned by the Warrant Agent),
may be exercised by the Registered Holder thereof by surrendering it, at the office of the Warrant Agent, or at the office of its successor
as Warrant Agent, in the Borough of Manhattan, City and State of New York, with the subscription form, as set forth in the Warrant, duly
executed (or, in the case of Warrants held through the Depositary in uncertificated or book-entry only form, through the applicable procedures
of the Depositary), and by paying in full the Warrant Price for each Class A ordinary share as to which the Warrant is exercised and any
and all applicable taxes due in connection with the exercise of the Warrant, the exchange of the Warrant for the Class A ordinary shares
and the issuance of such Class A ordinary shares, in lawful money of the United States, in good certified check or wire payable to the
Warrant Agent.

 

3.3.2.   Issuance
of Class A Ordinary Shares on Exercise. As soon as practicable after the exercise of any Warrant and the clearance of the funds in
payment of the Warrant Price (if payment is pursuant to subsection ‎3.3.1(a)), the Company shall issue to
the Registered Holder of such Warrant a book-entry position or certificate, as applicable, for the number of full Class A ordinary shares
to which he, she or it is entitled, registered in such name or names as may be directed by him, her or it on the register of members of
the Company, and if such Warrant shall not have been exercised in full, a new book-entry position or countersigned Warrant, as applicable,
for the number of shares as to which such Warrant shall not have been exercised. Notwithstanding the foregoing, the Company shall not
be obligated to deliver any Class A ordinary shares pursuant to the exercise of a Warrant and shall have no obligation to settle such
Warrant exercise unless a registration statement under the Securities Act covering the issuance of the Class A ordinary shares underlying
the Public Warrants is then effective and a prospectus relating thereto is current, subject to the Company’s satisfying its obligations
under Section ‎7.4. No Warrant shall be exercisable and the Company shall not be obligated to issue Class
A ordinary shares upon exercise of a Warrant unless the Class A ordinary shares issuable upon such Warrant exercise have been registered,
qualified or deemed to be exempt from registration or qualification under the securities laws of the state of residence of the Registered
Holder of the Warrants. In the event that the conditions in the two immediately preceding sentences are not satisfied with respect to
a Warrant, the holder of such Warrant shall not be entitled to exercise such Warrant and such Warrant may have no value and expire worthless,
in which case the purchaser of a Unit containing such Public Warrants shall have paid the full purchase price for the Unit solely for
the Class A ordinary shares underlying such Unit. In no event will the Company be required to net cash settle any Warrant.

 

3.3.3.   Valid
Issuance. All Class A ordinary shares issued upon the proper exercise of a Warrant in conformity with this Agreement and the Amended
and Restated Memorandum and Articles of Association of the Company, following the necessary updates to the Register of Members of the
Company, shall be validly issued as fully paid and non-assessable.

 

3.3.4.   Date
of Issuance. Each person in whose name any book-entry position or certificate, as applicable, for Class A ordinary shares is issued
and who is registered in the register of members of the Company shall for all purposes be deemed to have become the holder of record of
such Class A ordinary shares on the date on which the Warrant, or book-entry position representing such Warrant, was surrendered and payment
of the Warrant Price was made, irrespective of the date of delivery of such certificate in the case of a certificated Warrant, except
that, if the date of such surrender and payment is a date when the register of members of the Company or book-entry system of the Warrant
Agent are closed, such person shall be deemed to have become the holder of such Class A ordinary shares at the close of business on the
next succeeding date on which the share transfer books or book-entry system are open.

 

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3.3.5.   Maximum
Percentage. A holder of a Warrant may notify the Company in writing in the event it elects to be subject to the provisions contained
in this subsection ‎3.3.5; however, no holder of a Warrant shall be subject to this subsection ‎3.3.5 unless
he, she or it makes such election. If the election is made by a holder, the Warrant Agent shall not effect the exercise of the holder’s
Warrant, and such holder shall not have the right to exercise such Warrant, to the extent that after giving effect to such exercise, such
person (together with such person’s affiliates), to the Warrant Agent’s actual knowledge, would beneficially own in excess
of 9.8% (or such other amount as a holder may specify) (the “Maximum Percentage”) of the Class A ordinary shares
outstanding immediately after giving effect to such exercise. For purposes of the foregoing sentence, the aggregate number of Class A
ordinary shares beneficially owned by such person and its affiliates shall include the number of Class A ordinary shares issuable upon
exercise of the Warrant with respect to which the determination of such sentence is being made, but shall exclude Class A ordinary shares
that would be issuable upon (x) exercise of the remaining, unexercised portion of the Warrant beneficially owned by such person and its
affiliates and (y) exercise or conversion of the unexercised or unconverted portion of any other securities of the Company beneficially
owned by such person and its affiliates (including, without limitation, any convertible notes or convertible preferred shares or warrants)
subject to a limitation on conversion or exercise analogous to the limitation contained herein. Except as set forth in the preceding sentence,
for purposes of this paragraph, beneficial ownership shall be calculated in accordance with Section 13(d) of the Securities Exchange Act
of 1934, as amended (the “Exchange Act”). For purposes of the Warrant, in determining the number of issued and
outstanding Class A ordinary shares, the holder may rely on the number of issued and outstanding Class A ordinary shares as reflected
in (1) the Company’s most recent annual report on Form 10-K, quarterly report on Form 10-Q, current report on Form 8-K or other
public filing with the Commission as the case may be, (2) a more recent public announcement by the Company or (3) any other notice by
the Company or Continental Stock Transfer & Trust Company, as transfer agent (the “Transfer Agent”), setting
forth the number of Class A ordinary shares outstanding. For any reason at any time, upon the written request of the holder of the Warrant,
the Company shall, within two (2) Business Days, confirm orally and in writing to such holder the number of Class A ordinary shares then
outstanding. In any case, the number of issued and outstanding Class A ordinary shares shall be determined after giving effect to the
conversion or exercise of equity securities of the Company by the holder and its affiliates since the date as of which such number of
issued and outstanding Class A ordinary shares was reported. By written notice to the Company, the holder of a Warrant may from time to
time increase or decrease the Maximum Percentage applicable to such holder to any other percentage specified in such notice; provided, however,
that any such increase shall not be effective until the sixty-first (61st) day after such notice is delivered to the Company.

 

4.      Adjustments.

 

4.1.     Share
Capitalizations.

 

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

 

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4.1.2.   Extraordinary
Dividends. If the Company, at any time while the Warrants are outstanding and unexpired, shall pay a dividend or make a distribution
in cash, securities or other assets to the holders of Class A ordinary shares on account of such Class A ordinary shares (or other securities
into which the Warrants are convertible), other than (a) as described in subsection ‎4.1.1 above, (b)
Ordinary Cash Dividends (as defined below), (c) to satisfy the redemption rights of the holders of Class A ordinary shares in connection
with a proposed initial Business Combination, (d) to satisfy the redemption rights of the holders of Class A ordinary shares in connection
with a shareholder vote to amend the Company’s amended and restated memorandum and articles of association (i) to modify the substance
or timing of the Company’s obligation to redeem 100% of its public shares if the Company does not complete its initial Business
Combination within the required time period or (ii) with respect to any other provision relating to shareholders’ rights or pre-initial
Business Combination activity or (e) in connection with the redemption of public shares upon the failure of the Company to complete its
initial Business Combination and any subsequent distribution of its assets upon its liquidation (any such non-excluded event being referred
to herein as an “Extraordinary Dividend”), then the Warrant Price shall be decreased, effective immediately
after the effective date of such Extraordinary Dividend, by the amount of cash and/or the fair market value (as determined by the Board,
in good faith) of any securities or other assets paid on each Class A ordinary shares in respect of such Extraordinary Dividend. For purposes
of this subsection ‎4.1.2, “Ordinary Cash Dividends” means any cash dividend or
cash distribution which, when combined on a per share basis, with the per share amounts of all other cash dividends and cash distributions
paid on the Class A ordinary shares during the 365-day period ending on the date of declaration of such dividend or distribution (as adjusted
to appropriately reflect any of the events referred to in other subsections of this Section ‎4 and excluding
cash dividends or cash distributions that resulted in an adjustment to the Warrant Price or to the number of Class A ordinary shares issuable
on exercise of each Warrant) does not exceed $0.50 (being 5% of the offering price of the Units in the Offering). Solely for purposes
of illustration, if the Company, at a time while the Warrants are outstanding and unexpired, pays a cash dividend of $0.35 and previously
paid an aggregate of $0.40 of cash dividends and cash distributions on the Ordinary Shares during the 365-day period ending on the date
of declaration of such $0.35 dividend, then the Warrant Price will be decreased, effectively immediately after the effective date of such
$0.35 dividend, by $0.25 (the absolute value of the difference between $0.75 (the aggregate amount of all cash dividends and cash distributions
paid or made in such 365-day period, including such $0.35 dividend) and $0.50 (the greater of (x) $0.50 and (y) the aggregate amount of
all cash dividends and cash distributions paid or made in such 365-day period prior to such $0.35 dividend)). Furthermore, solely for
the purposes of illustration, if following the closing of the Company’s initial Business Combination, there were total shares outstanding
of 100,000,000 and the Company paid a $1.00 dividend to 17,500,000 of such shares (with the remaining 82,500,000 shares waiving their
right to receive such dividend), then no adjustment to the Warrant Price would occur as a $17.5 million dividend payment divided by 100,000,000
shares equals $0.175 per share which is less than $0.50 per share.

 

4.2.      Aggregation
of Shares. If after the date hereof, and subject to the provisions of Section ‎4.6 hereof, the number
of issued and outstanding Class A ordinary shares is decreased by a consolidation, combination, reverse share split or reclassification
of Class A ordinary shares or other similar event, then, on the effective date of such consolidation, combination, reverse share split,
reclassification or similar event, the number of Class A ordinary shares issuable on exercise of each Warrant shall be decreased in proportion
to such decrease in issued and outstanding Class A ordinary shares.

 

4.3.      Adjustments
in Exercise Price. Whenever the number of Class A ordinary shares purchasable upon the exercise of the Warrants is adjusted, as provided
in subsection ‎4.1.1 or Section ‎4.2 above, the Warrant Price shall
be adjusted (to the nearest cent) by multiplying such Warrant Price immediately prior to such adjustment by a fraction (x) the numerator
of which shall be the number of Class A ordinary shares purchasable upon the exercise of the Warrants immediately prior to such adjustment,
and (y) the denominator of which shall be the number of Class A ordinary shares so purchasable immediately thereafter. In addition, if
(x) the Company issues additional Class A ordinary shares or equity-linked securities for capital raising purposes in connection with
the closing of the initial Business Combination at an issue price or effective issue price of less than $9.20 per Class A ordinary share
(with such issue price or effective issue price to be determined in good faith by the Board, and in the case of any such issuance to the
Sponsor, the initial shareholders (as defined in the Prospectus) or their respective affiliates, without taking into account any founder
shares (as defined in the Prospectus) held by the Sponsor, the initial shareholders or their respective affiliates, as applicable, prior
to such issuance) (the “Newly Issued Price”), (y) the aggregate gross proceeds from such issuances represent
more than 60% of the total equity proceeds, and interest thereon, available for the funding of the initial Business Combination on the
date of the completion of a the initial Business Combination (net of redemptions), and (z) the volume weighted average trading price of
the Company’s Class A ordinary shares during the 20 trading day period starting on the trading day prior to the day on which the
Company consummates the initial Business Combination (such price, the “Market Value”) is below $9.20 per share,
the Warrant Price will be adjusted (to the nearest cent) to be equal to 115% of the greater of: (i) the Market Value and (ii) the Newly
Issued Price, and the $18.00 per share Redemption Trigger Price (as defined in Section 6.1) will be adjusted (to the nearest
cent) to be equal to 180% of the greater of: (i) the Market Value and (ii) the Newly Issued Price.

 

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4.4. Replacement
of Securities upon Reorganization, etc.  In case of any reclassification or reorganization of the issued and outstanding Class
A ordinary shares (other than a change under Section 4.1 or Section 4.2 hereof or that solely affects the par value of such Class A ordinary
shares), or in the case of any merger or consolidation of the Company with or into another corporation (other than a consolidation or
merger in which the Company is the continuing corporation and that does not result in any reclassification or reorganization of the issued
and outstanding Class A ordinary shares), or in the case of any sale or conveyance to another corporation or entity of the assets or other
property of the Company as an entirety or substantially as an entirety in connection with which the Company is dissolved, the holders
of the Warrants shall thereafter have the right to purchase and receive, upon the basis and upon the terms and conditions specified in
the Warrants and in lieu of the Class A ordinary shares of the Company immediately theretofore purchasable and receivable upon the exercise
of the rights represented thereby, the kind and amount of shares of stock or other securities or property (including cash) receivable
upon such reclassification, reorganization, merger or consolidation, or upon a dissolution following any such sale or transfer, that Warrant
holder would have received if such Warrant holder had exercised his, her or its Warrant(s) immediately prior to such event. If any reclassification
also results in a change in the Class A ordinary shares covered by Section 4.1, 4.2 or 4.3, then such adjustment shall be made pursuant
to Sections 4.1, 4.2 and 4.3 and this Section 4.4. The provisions of this Section 4.4 shall similarly apply to successive reclassifications,
reorganizations, mergers or consolidations, sales or other transfers.  In no event will the Warrant Price be reduced to less than
the par value per share issuable upon exercise of such Warrant.

 

4.5.     Notices
of Changes in Warrant. Upon every adjustment of the Warrant Price or the number of shares issuable upon exercise of a Warrant, the
Company shall give written notice thereof to the Warrant Agent, which notice shall state the Warrant Price resulting from such adjustment
and the increase or decrease, if any, in the number of shares purchasable at such price upon the exercise of a Warrant, setting forth
in reasonable detail the method of calculation and the facts upon which such calculation is based. Upon the occurrence of any event specified
in Sections ‎4.1, ‎4.2, ‎4.3 or ‎4.4,
the Company shall give written notice of the occurrence of such event to each holder of a Warrant, at the last address set forth for such
holder in the Warrant Register, of the record date or the effective date of the event. Failure to give such notice, or any defect therein,
shall not affect the legality or validity of such event.

 

4.6.     No
Fractional Shares. Notwithstanding any provision contained in this Agreement to the contrary, the Company shall not issue fractional
shares upon the exercise of Warrants. If, by reason of any adjustment made pursuant to this Section ‎4, the
holder of any Warrant would be entitled, upon the exercise of such Warrant, to receive a fractional interest in a share, the Company shall,
upon such exercise, round down to the nearest whole number the number of Class A ordinary shares to be issued to such holder.

 

4.7.     Form
of Warrant. The form of Warrant need not be changed because of any adjustment pursuant to this Section ‎4,
and Warrants issued after such adjustment may state the same Warrant Price and the same number of shares as is stated in the Warrants
initially issued pursuant to this Agreement; provided, however, that the Company may at any time in its sole discretion
make any change in the form of Warrant that the Company may deem appropriate and that does not affect the substance thereof, and any Warrant
thereafter issued or countersigned, whether in exchange or substitution for an outstanding Warrant or otherwise, may be in the form as
so changed.

 

4.8.     Other
Events. In case any event shall occur affecting the Company as to which none of the provisions of the preceding subsections of this Section ‎4 are
strictly applicable, but which would require an adjustment to the terms of the Warrants in order to (i) avoid an adverse impact on
the Warrants and (ii) effectuate the intent and purpose of this Section ‎4, then, in each such case,
the Company shall appoint a firm of independent public accountants, investment banking or other appraisal firm of recognized national
standing, which shall give its opinion as to whether or not any adjustment to the rights represented by the Warrants is necessary to effectuate
the intent and purpose of this Section ‎4 and, if they determine that an adjustment is necessary, the
terms of such adjustment; provided, however, that under no circumstances shall the Warrants be adjusted pursuant
to this Section ‎4.8 as a result of any issuance of securities in connection with a Business Combination.
The Company shall adjust the terms of the Warrants in a manner that is consistent with any adjustment recommended in such opinion. 

 

    8

     

    

 

5.      Transfer
and Exchange of Warrants.

 

5.1.      Registration
of Transfer. The Warrant Agent shall register the transfer, from time to time, of any outstanding Warrant upon the Warrant Register,
upon surrender of such Warrant for transfer, in the case of certificated warrants, properly endorsed with signatures properly guaranteed
and accompanied by appropriate instructions for transfer. Upon any such transfer, a new Warrant representing an equal aggregate number
of Warrants shall be issued and the old Warrant shall be cancelled by the Warrant Agent. In the case of certificated warrants, the Warrants
so cancelled shall be delivered by the Warrant Agent to the Company from time to time upon request.

 

5.2.      Procedure
for Surrender of Warrants. Warrants may be surrendered to the Warrant Agent, together with a written request for exchange or transfer,
and thereupon the Warrant Agent shall issue in exchange therefor one or more new Warrants as requested by the Registered Holder of the
Warrants so surrendered, representing an equal aggregate number of Warrants; provided, however, that in the event
that a Warrant surrendered for transfer bears a restrictive legend (as in the case of the Private Placement Warrants), the Warrant Agent
shall not cancel such Warrant and issue new Warrants in exchange thereof until the Warrant Agent has received an opinion of counsel for
the Company stating that such transfer may be made and indicating whether the new Warrants must also bear a restrictive legend.

 

5.3.      Fractional
Warrants. The Warrant Agent shall not be required to effect any registration of transfer or exchange which shall result in the issuance
of a warrant certificate or book-entry position for a fraction of a Warrant, except as part of the Units.

 

5.4.      Service
Charges. No service charge shall be made for any exchange or registration of transfer of Warrants.

 

5.5.      Warrant
Execution and Countersignature. The Warrant Agent is hereby authorized to countersign and to deliver, in accordance with the terms
of this Agreement, the Warrants required to be issued pursuant to the provisions of this Section ‎5, and the
Company, whenever required by the Warrant Agent, shall supply the Warrant Agent with Warrants duly executed on behalf of the Company for
such purpose.

 

5.6.      Transfer
of Warrants. Prior to the Detachment Date, the Public Warrants may be transferred or exchanged only together with the Unit in which
such Warrant is included, and only for the purpose of effecting, or in conjunction with, a transfer or exchange of such Unit. Furthermore,
each transfer of a Unit on the register relating to such Units shall operate also to transfer the Warrants included in such Unit. Notwithstanding
the foregoing, the provisions of this Section ‎5.6 shall have no effect on any transfer of Warrants on
and after the Detachment Date.

 

6.      Redemption.

 

6.1.      Redemption.
Subject to Section ‎6.4 hereof, not less than all of the outstanding Warrants may be redeemed, at the
option of the Company, at any time while they are exercisable and prior to their expiration, at the office of the Warrant Agent, upon
notice to the Registered Holders of the Warrants, as described in Section ‎6.2 below, at the price of
$0.01 per Warrant (the “Redemption Price”), if and only if: (i) the last sales price of the Class A ordinary
shares reported has been at least $18.00 per share (subject to adjustment in compliance with Section ‎4 hereof)
(the “Redemption Trigger Price”), for any twenty (20) trading days within the thirty (30) trading-day period
commencing after the Public Warrants become exercisable and ending on the third trading day prior to the date on which notice of the redemption
is given; and (ii) there is an effective registration statement covering the Class A ordinary shares issuable upon exercise of the Warrants,
and a current prospectus relating thereto, available throughout the 30-day Redemption Period (as defined in Section ‎6.2 below).

 

    9

     

    

 

6.2.     Date
Fixed for, and Notice of, Redemption. In the event that the Company elects to redeem all of the Warrants pursuant to Section ‎6.1,
the Company shall fix a date for the redemption (the “Redemption Date”). Notice of redemption shall be mailed
by first class mail, postage prepaid, by the Company not less than thirty (30) days prior to the Redemption Date (the “30-day
Redemption Period”) to the Registered Holders of the Public Warrants to be redeemed at their last addresses as they shall
appear on the registration books. Any notice mailed in the manner herein provided shall be conclusively presumed to have been duly given
whether or not the Registered Holder received such notice.

 

6.3.     Exercise
After Notice of Redemption. The Warrants may be exercised, for cash, at any time after notice of redemption shall have been given
by the Company pursuant to Section ‎6.2 hereof and prior to the Redemption Date. On and after the Redemption
Date, the record holder of the Warrants shall have no further rights except to receive, upon surrender of the Warrants, the Redemption
Price.

 

6.4.     Exclusion
of Private Placement Warrants. The Company agrees that the redemption rights provided in this Section 6 shall not apply to the Private
Placement Warrants if at the time of the redemption such Private Placement Warrants continue to be held by the Sponsor or any of its Permitted
Transferees. However, once such Private Placement Warrants are transferred (other than to Permitted Transferees under Section ‎2.6),
the Company may redeem the Private Placement Warrants pursuant to Section ‎6.1, provided that the criteria
for redemption are met, including the opportunity of the holder of such Private Placement Warrants to exercise the Private Placement Warrants
prior to redemption pursuant to Section ‎6.3. Private Placement Warrants that are transferred to persons other
than Permitted Transferees shall upon such transfer cease to be Private Placement Warrants and shall become Public Warrants under this
Agreement.

 

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

 

7.1.     No
Rights as Shareholder. A Warrant does not entitle the Registered Holder thereof to any of the rights of a shareholder of the Company,
including, without limitation, the right to receive dividends, or other distributions, exercise any preemptive rights to vote or to consent
or to receive notice as shareholders in respect of the general meetings of the Company or the appointment of directors of the Company
or any other matter.

 

 

7.2.     Lost,
Stolen, Mutilated, or Destroyed Warrants. If any Warrant is lost, stolen, mutilated, or destroyed, the Company and the Warrant Agent
may on such terms as to indemnity or otherwise as they may in their discretion impose (which shall, in the case of a mutilated Warrant,
include the surrender thereof), issue a new Warrant of like denomination, tenor, and date as the Warrant so lost, stolen, mutilated, or
destroyed. Any such new Warrant shall constitute a substitute contractual obligation of the Company, whether or not the allegedly lost,
stolen, mutilated, or destroyed Warrant shall be at any time enforceable by anyone.

 

7.3.     Reservation
of Class A Ordinary Shares. The Company shall at all times reserve and keep available a number of its authorized but unissued Class
A ordinary shares that shall be sufficient to permit the exercise in full of all outstanding Warrants issued pursuant to this Agreement.

 

7.4.     Registration
of Class A Ordinary Shares

 

7.4.1.   Registration
of the Class A Ordinary Shares. The Company agrees that as soon as practicable, but in no event later than fifteen (15) Business Days
after the closing of its initial Business Combination, it shall use its reasonable best efforts to file with the Commission a registration
statement covering the issuance, under the Securities Act, of the Class A ordinary shares issuable upon exercise of the Warrants. The
Company shall use its reasonable best efforts to cause the same to become effective and to maintain the effectiveness of such registration
statement, and a current prospectus relating thereto, until the expiration of the Warrants in accordance with the provisions of this Agreement.
For the avoidance of any doubt, unless and until all of the Warrants have been exercised or have expired, the Company shall continue to
be obligated to comply with its registration obligations under the first two sentences of this subsection ‎7.4.1.

 

    10

     

    

 

8.      Concerning
the Warrant Agent and Other Matters.

 

8.1.     Payment
of Taxes. The Company shall from time to time promptly pay all taxes and charges that may be imposed upon the Company or the Warrant
Agent in respect of the issuance or delivery of Class A ordinary shares upon the exercise of the Warrants, but the Company shall not be
obligated to pay any transfer taxes in respect of the Warrants or such shares.

 

8.2.     Resignation,
Consolidation, or Merger of Warrant Agent.

 

8.2.1.   Appointment
of Successor Warrant Agent. The Warrant Agent, or any successor to it hereafter appointed, may resign its duties and be discharged
from all further duties and liabilities hereunder after giving sixty (60) days’ notice in writing to the Company. If the office
of the Warrant Agent becomes vacant by resignation or incapacity to act or otherwise, the Company shall appoint in writing a successor
Warrant Agent in place of the Warrant Agent. If the Company shall fail to make such appointment within a period of thirty (30) days after
it has been notified in writing of such resignation or incapacity by the Warrant Agent or by the holder of a Warrant (who shall, with
such notice, submit his, her or its Warrant for inspection by the Company), then the holder of any Warrant may apply to the Supreme Court
of the State of New York for the County of New York for the appointment of a successor Warrant Agent at the Company’s cost. Any
successor Warrant Agent, whether appointed by the Company or by such court, shall be a corporation organized and existing under the laws
of the State of New York, in good standing and having its principal office in the Borough of Manhattan, City and State of New York, and
authorized under such laws to exercise corporate trust powers and subject to supervision or examination by federal or state authority.
After appointment, any successor Warrant Agent shall be vested with all the authority, powers, rights, immunities, duties, and obligations
of its predecessor Warrant Agent with like effect as if originally named as Warrant Agent hereunder, without any further act or deed;
but if for any reason it becomes necessary or appropriate, the predecessor Warrant Agent shall execute and deliver, at the expense of
the Company, an instrument transferring to such successor Warrant Agent all the authority, powers, and rights of such predecessor Warrant
Agent hereunder; and upon request of any successor Warrant Agent the Company shall make, execute, acknowledge, and deliver any and all
instruments in writing for more fully and effectually vesting in and confirming to such successor Warrant Agent all such authority, powers,
rights, immunities, duties, and obligations.

 

8.2.2.   Notice
of Successor Warrant Agent. In the event a successor Warrant Agent shall be appointed, the Company shall give notice thereof to the
predecessor Warrant Agent and the Transfer Agent for the Class A ordinary shares not later than the effective date of any such appointment.

 

8.2.3.   Merger
or Consolidation of Warrant Agent. Any corporation into which the Warrant Agent may be merged or with which it may be consolidated
or any corporation resulting from any merger or consolidation to which the Warrant Agent shall be a party shall be the successor Warrant
Agent under this Agreement without any further act.

 

    11

     

    

 

8.3.     Fees
and Expenses of Warrant Agent.

 

8.3.1.   Remuneration.
The Company agrees to pay the Warrant Agent reasonable remuneration for its services as such Warrant Agent hereunder and shall, pursuant
to its obligations under this Agreement, reimburse the Warrant Agent upon demand for all expenditures that the Warrant Agent may reasonably
incur in the execution of its duties hereunder.

 

8.3.2.   Further
Assurances. The Company agrees to perform, execute, acknowledge, and deliver or cause to be performed, executed, acknowledged, and
delivered all such further and other acts, instruments, and assurances as may reasonably be required by the Warrant Agent for the carrying
out or performing of the provisions of this Agreement.

 

8.4.     Liability
of Warrant Agent.

 

8.4.1.   Reliance
on Company Statement. Whenever in the performance of its duties under this Agreement, the Warrant Agent shall deem it necessary or
desirable that any fact or matter be proved or established by the Company prior to taking or suffering any action hereunder, such fact
or matter (unless other evidence in respect thereof be herein specifically prescribed) may be deemed to be conclusively proved and established
by a statement signed by the Chief Executive Officer, Chief Financial Officer, Chief Operating Officer, Secretary or Chairman of the Board
of the Company and delivered to the Warrant Agent. The Warrant Agent may rely upon such statement for any action taken or suffered in
good faith by it pursuant to the provisions of this Agreement.

 

8.4.2.   Indemnity.
The Warrant Agent shall be liable hereunder only for its own gross negligence, willful misconduct or bad faith. The Company agrees to
indemnify the Warrant Agent and save it harmless against any and all liabilities, including judgments, out-of-pocket costs and reasonable
counsel fees, for anything done or omitted by the Warrant Agent in the execution of this Agreement, except as a result of the Warrant
Agent’s gross negligence, willful misconduct or bad faith.

 

8.4.3.   Exclusions.
The Warrant Agent shall have no responsibility with respect to the validity of this Agreement or with respect to the validity or execution
of any Warrant (except its countersignature thereof). The Warrant Agent shall not be responsible for any breach by the Company of any
covenant or condition contained in this Agreement or in any Warrant. The Warrant Agent shall not be responsible to make any adjustments
required under the provisions of Section ‎4 hereof or responsible for the manner, method, or amount of
any such adjustment or the ascertaining of the existence of facts that would require any such adjustment; nor shall it by any act hereunder
be deemed to make any representation or warranty as to the authorization or reservation of any Class A ordinary shares to be issued pursuant
to this Agreement or any Warrant or as to whether any Class A ordinary shares shall, when issued, be valid and fully paid and non-assessable.

 

8.5.     Acceptance
of Agency. The Warrant Agent hereby accepts the agency established by this Agreement and agrees to perform the same upon the terms
and conditions herein set forth and among other things, shall account promptly to the Company with respect to Warrants exercised and concurrently
account for, and pay to the Company, all monies received by the Warrant Agent for the purchase of Class A ordinary shares through the
exercise of the Warrants.

 

    12

     

    

 

8.6.     Waiver.
The Warrant Agent has no right of set-off or any other right, title, interest or claim of any kind (“Claim”)
in, or to any distribution of, the Trust Account (as defined in that certain Investment Management Trust Agreement, dated as of the date
hereof, by and between the Company and Continental Stock Transfer & Trust Company as trustee thereunder) and hereby agrees not to
seek recourse, reimbursement, payment or satisfaction for any Claim against the Trust Account for any reason whatsoever. The Warrant Agent
hereby waives any and all Claims against the Trust Account and any and all rights to seek access to the Trust Account.

 

9.      Miscellaneous
Provisions.

 

9.1.     Successors.
All the covenants and provisions of this Agreement by or for the benefit of the Company or the Warrant Agent shall bind and inure to the
benefit of their respective successors and assigns.

 

9.2.     Notices.
Any notice, statement or demand authorized by this Agreement to be given or made by the Warrant Agent or by the holder of any Warrant
to or on the Company shall be sufficiently given when so delivered if by hand or overnight delivery or if sent by certified mail or private
courier service within five (5) days after deposit of such notice, postage prepaid, addressed (until another address is filed in writing
by the Company with the Warrant Agent), as follows:

 

Cactus Acquisition Corp. 1 Limited

4B Cedar Brook Drive

Cranbury, NJ 08512

Attention: Chief Financial Officer

 

Any notice, statement or demand authorized by this
Agreement to be given or made by the holder of any Warrant or by the Company to or on the Warrant Agent shall be sufficiently given when
so delivered if by hand or overnight delivery or if sent by certified mail or private courier service within five (5) days after deposit
of such notice, postage prepaid, addressed (until another address is filed in writing by the Warrant Agent with the Company), as follows:

 

Continental Stock Transfer & Trust Company

One State Street, 30th Floor

New York, New York 10004

Attention: Compliance Department

 

In each case, with copies to:

 

Oppenheimer & Co.

85
Broad Street 

New York, NY 10004

Attn.: Michael A. Margolis

Email: MichaelA.Margolis@opco.com

 

Moelis & Company LLC

399 Park Avenue, 5th Floor

New York, NY 10022

Attn: Steven R. Halperin

Email: steven.halperin@moelis.com

 

    13

     

    

 

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

 

9.4.      Persons
Having Rights under this Agreement. Nothing in this Agreement shall be construed to confer upon, or give to, any person or corporation
other than the parties hereto and the Registered Holders of the Warrants any right, remedy, or claim under or by reason of this Agreement
or of any covenant, condition, stipulation, promise, or agreement hereof. All covenants, conditions, stipulations, promises, and agreements
contained in this Agreement shall be for the sole and exclusive benefit of the parties hereto and their successors and assigns and of
the Registered Holders of the Warrants.

 

9.5.      Examination
of the Warrant Agreement. A copy of this Agreement shall be available at all reasonable times at the office of the Warrant Agent in
the Borough of Manhattan, City and State of New York, for inspection by the Registered Holder of any Warrant. The Warrant Agent may require
any such holder to submit such holder’s Warrant for inspection by the Warrant Agent.

 

9.6.      Counterparts.
This Agreement may be executed in any number of original or facsimile counterparts and each of such counterparts shall for all purposes
be deemed to be an original, and all such counterparts shall together constitute but one and the same instrument.

 

9.7.      Effect
of Headings. The section headings herein are for convenience only and are not part of this Agreement and shall not affect the interpretation
thereof.

 

9.8.      Amendments.
This Agreement may be amended by the parties hereto without the consent of any Registered Holder for the purpose of curing any ambiguity,
or curing, correcting or supplementing any defective provision contained herein or adding or changing any other provisions with respect
to matters or questions arising under this Agreement as the parties may deem necessary or desirable and that the parties deem shall not
adversely affect the interest of the Registered Holders. All other modifications or amendments, including any amendment to increase the
Warrant Price or shorten the Exercise Period and any amendment to the terms of only the Private Placement Warrants, shall require the
vote or written consent of the Registered Holders of 50% of the then outstanding Public Warrants. Notwithstanding the foregoing, the Company
may lower the Warrant Price or extend the duration of the Exercise Period pursuant to Sections ‎3.1 and ‎3.2,
respectively, without the consent of the Registered Holders.

 

9.9.      Severability.
This Agreement shall be deemed severable, and the invalidity or unenforceability of any term or provision hereof shall not affect the
validity or enforceability of this Agreement or of any other term or provision hereof. Furthermore, in lieu of any such invalid or unenforceable
term or provision, the parties hereto intend that there shall be added as a part of this Agreement a provision as similar in terms to
such invalid or unenforceable provision as may be possible and be valid and enforceable.

 

    14

     

    

 

Exhibit A Form of Warrant Certificate

Exhibit B Legend

 

[Signature Page Follows]

 

    15

     

    

 

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

 

	 	CACTUS ACQUISITION CORP. 1 LIMITED
	 	 
	 	By:	/s/ Ofer Gonen 
	 	 	Name: Ofer Gonen
	 	 	Title: Chief Executive Officer

 

	 	CONTINENTAL STOCK TRANSFER & TRUST COMPANY, as Warrant Agent
	 	 
	 	By: 	/s/ Ana Gois 
	 	 	Name: Ana Gois
	 	 	Title: Vice President 

 

[Signature Page - Warrant Agreement]

 

     

     

    

 

EXHIBIT A

 

[Form of Warrant Certificate]

 

[FACE]

 

Number

 

WARRANTS

THIS WARRANT SHALL BE VOID IF NOT EXERCISED PRIOR TO

THE EXPIRATION OF THE EXERCISE PERIOD PROVIDED FOR

IN THE WARRANT AGREEMENT DESCRIBED BELOW

CACTUS ACQUISITION CORP. 1 LIMITED

Incorporated Under the Laws of the Cayman Islands

 

CUSIP
[·]

 

Warrant Certificate

 

This Warrant Certificate certifies that              ,
or registered assigns, is the registered holder of warrant(s) evidenced hereby (the “Warrants” and each, a “Warrant”)
to purchase Class A ordinary shares, $0.0001 par value (“Class A ordinary shares”), of Cactus Acquisition Corp.
1 Limited, a Cayman Islands exempted company (the “Company”). Each Warrant entitles the holder, upon exercise
during the period set forth in the Warrant Agreement referred to below, to receive from the Company that number of fully paid and non-assessable
Class A ordinary shares as set forth below, at the exercise price (the “Exercise Price”) as determined pursuant
to the Warrant Agreement, payable in lawful money of the United States of America upon surrender of this Warrant Certificate and payment
of the Exercise Price at the office or agency of the Warrant Agent referred to below, subject to the conditions set forth herein and in
the Warrant Agreement. Defined terms used in this Warrant Certificate but not defined herein shall have the meanings given to them in
the Warrant Agreement.

 

Each Warrant is initially exercisable for one fully
paid and non-assessable Class A ordinary share. No fractional shares will be issued upon exercise of any Warrant. If, upon the exercise
of Warrants, a holder would be entitled to receive a fractional interest in a Class A ordinary share, the Company will, upon exercise,
round down to the nearest whole number the number of Class A ordinary shares to be issued to the Warrant holder. The number of Class A
ordinary shares issuable upon exercise of the Warrants is subject to adjustment upon the occurrence of certain events as set forth in
the Warrant Agreement.

 

The initial Exercise Price per one Class A ordinary
share for any Warrant is equal to $11.50 per share. The Exercise Price is subject to adjustment upon the occurrence of certain events
as set forth in the Warrant Agreement.

 

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

 

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

 

     

     

    

 

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

 

This Warrant Certificate shall be governed by and
construed in accordance with the internal laws of the State of New York.

 

	 	CACTUS ACQUISITION CORP. 1 LIMITED
	 	 
	 	By:	 
	 	 	Name:	 
	 	 	Title:	 
	 	 	 	 
	 	CONTINENTAL STOCK TRANSFER & TRUST COMPANY, AS WARRANT AGENT
	 	 
	 	By:	 
	 	 	Name:	 
	 	 	Title:	 

 

     

     

    

 

[Form of Warrant Certificate]

 

[Reverse]

 

The Warrants evidenced by this Warrant Certificate
are part of a duly authorized issue of Warrants entitling the holder on exercise to receive Class A ordinary shares and are issued or
to be issued pursuant to a Warrant Agreement dated as of November 2, 2021 (the “Warrant Agreement”), duly executed
and delivered by the Company to Continental Stock Transfer & Trust Company, a New York corporation, as warrant agent (the “Warrant
Agent”), which Warrant Agreement is hereby incorporated by reference in and made a part of this instrument and is hereby
referred to for a description of the rights, limitation of rights, obligations, duties and immunities thereunder of the Warrant Agent,
the Company and the holders (the words “holders” or “holder” meaning the Registered
Holders or Registered Holder, respectively) of the Warrants. A copy of the Warrant Agreement may be obtained by the holder hereof upon
written request to the Company. Defined terms used in this Warrant Certificate but not defined herein shall have the meanings given to
them in the Warrant Agreement.

 

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

 

Notwithstanding anything else in this Warrant Certificate
or the Warrant Agreement, no Warrant may be exercised unless at the time of exercise (i) a registration statement covering the issuance
of the Class A ordinary shares to be issued upon exercise is effective under the Securities Act and (ii) a prospectus thereunder relating
to the Class A ordinary shares is current.

 

The Warrant Agreement provides that upon the occurrence
of certain events the number of Class A ordinary shares issuable upon exercise of the Warrants set forth on the face hereof may, subject
to certain conditions, be adjusted. If, upon exercise of a Warrant, the holder thereof would be entitled to receive a fractional interest
in a Class A ordinary share, the Company shall, upon exercise, round down to the nearest whole number of Class A ordinary shares to be
issued to the holder of the Warrant.

 

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

 

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

 

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

 

     

     

    

  

Election to Purchase

 

(To Be Executed Upon Exercise of Warrant)

 

The
undersigned hereby irrevocably elects to exercise the right, represented by this Warrant Certificate, to receive Class A ordinary shares
and herewith tenders payment for such Class A ordinary shares to the order of Cactus Acquisition Corp. 1 Limited (the “Company”)
in the amount of $[·]
in accordance with the terms hereof. The undersigned requests that a certificate for such Class A ordinary shares be registered in the
name of [·], whose address
is [·] and that such Class
A ordinary shares be delivered to [·]
whose address is [·].
If said number of Class A ordinary shares is less than all of the Class A ordinary shares purchasable hereunder, the undersigned requests
that a new Warrant Certificate representing the remaining balance of such Class A ordinary shares be registered in the name of [·],
whose address is [·] and
that such Warrant Certificate be delivered to [·],
whose address is [·].

 

 

[Signature Page Follows]

 

     

     

    

 

 Date:                     , 20

 

	 	 
	 	(Signature)
	 	 
	 	 
	 	 
	 	 
	 	(Address)
	 	 
	 	 
	 	(Tax Identification Number)

 

 

	 	 
	Signature Guaranteed:	 
	 	 
	 	 
	 	 

THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE
GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE
MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15 (OR ANY SUCCESSOR RULE) UNDER THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED).

 

     

     

    

 

EXHIBIT B

 

LEGEND

 

“THE SECURITIES REPRESENTED
HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS, AND MAY NOT BE OFFERED, SOLD,
TRANSFERRED OR OTHERWISE DISPOSED OF UNLESS REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND ANY APPLICABLE STATE SECURITIES
LAWS OR AN EXEMPTION FROM REGISTRATION IS AVAILABLE. IN ADDITION, SUBJECT TO ANY ADDITIONAL LIMITATIONS ON TRANSFER DESCRIBED IN THE LETTER
AGREEMENT BY AND AMONG CACTUS ACQUISITION CORP. 1 LIMITED (THE “COMPANY”), CACTUS HEALTHCARE MANAGEMENT LP AND THE OTHER PARTIES
THERETO, THE SECURITIES REPRESENTED HEREBY MAY NOT BE SOLD OR TRANSFERRED PRIOR TO THE DATE THAT IS THIRTY (30) DAYS AFTER THE DATE UPON
WHICH THE COMPANY COMPLETES ITS INITIAL BUSINESS COMBINATION (AS DEFINED IN SECTION ‎3 OF THE WARRANT AGREEMENT REFERRED TO HEREIN)
EXCEPT TO A PERMITTED TRANSFEREE (AS DEFINED IN SECTION 2 OF THE WARRANT AGREEMENT) WHO AGREES IN WRITING WITH THE COMPANY TO BE SUBJECT
TO SUCH TRANSFER PROVISIONS.

 

SECURITIES EVIDENCED HEREBY AND
CLASS A ORDINARY SHARES OF THE COMPANY ISSUED UPON EXERCISE OF SUCH SECURITIES SHALL BE ENTITLED TO REGISTRATION RIGHTS UNDER A REGISTRATION
RIGHTS AGREEMENT TO BE EXECUTED BY THE COMPANY.”

 

NO.                       WARRANTExhibit 10.1

 

October 28, 2021

 

Cactus Acquisition Corp. 1 Limited

4B Cedar Brook Drive

Cranbury, NJ 08512

 

Re: Initial Public Offering

 

Ladies and Gentlemen:

 

This letter (this “Letter
Agreement”) is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting Agreement”)
to be entered into by and between Cactus Acquisition Corp. 1 Limited, a Cayman Islands exempted company (the “Company”),
and Oppenheimer & Co. and Moelis & Company LLC (each, a “Representative”), as the representatives
of the several underwriters (the “Underwriters”), relating to an underwritten initial public offering (the “Public
Offering”) of 11,000,000 of the Company’s units (including up to 1,650,000 units that may be purchased to cover over-allotments,
if any) (the “Units”), each comprised of one Class A ordinary share of the Company, par value $0.0001 per share
(the “Class A ordinary shares”), and one-half of one warrant (each, a “Warrant”).
Each whole Warrant entitles the holder thereof to purchase one Class A ordinary share at a price of $11.50 per share, subject to adjustment.
The Units shall be sold in the Public Offering pursuant to a registration statement on Form S-1 and prospectus (the “Prospectus”)
filed by the Company with the Securities and Exchange Commission (the “Commission”) and the Company shall apply
to have the Units listed on the Nasdaq Global Market. Certain capitalized terms used herein are defined in paragraph 10 hereof.

 

In order to induce the Company
and the Underwriters to enter into the Underwriting Agreement and to proceed with the Public Offering and for other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, Cactus Healthcare Management LP, a Delaware limited partnership
(the “Sponsor”), and the other undersigned persons (each, an “Insider” and collectively,
the “Insiders”), hereby agrees with the Company as follows:

 

1. The
Sponsor and each Insider agrees that if the Company seeks shareholder approval of a proposed Business Combination, then in connection
with such proposed Business Combination, it, he or she shall (i) vote any Shares owned by it, him or her in favor of any proposed Business
Combination and (ii) not redeem any Shares owned by it, him or her in connection with such shareholder approval.

 

2. The
Sponsor and each Insider hereby agrees that in the event that the Company fails to consummate a Business Combination within 18 months
from the closing of the Public Offering, or such later period approved by the Company’s shareholders in accordance with the Company’s
amended and restated memorandum and articles of association, the Sponsor and each Insider shall take all reasonable steps to cause the
Company to (i) cease all operations except for the purpose of winding up, (ii) as promptly as reasonably possible but not more than ten
(10) business days thereafter, subject to lawfully available funds therefor, redeem 100% of the Class A ordinary shares sold as part of
the Units in the Public Offering (the “Offering Shares”), at a per share price, payable in cash, equal to the
aggregate amount then on deposit in the Trust Account, including interest (which interest shall be net of taxes payable and less up to
$100,000 of interest to pay dissolution expenses), divided by the number of then outstanding Offering Shares, which redemption will completely
extinguish all Public Shareholders’ rights as shareholders (including the right to receive further liquidation distributions, if
any), subject to applicable law, and (iii) as promptly as reasonably possible following such redemption, subject to the approval of the
Company’s remaining shareholders and the Company’s board of directors, dissolve and liquidate, subject in each case to the
Company’s obligations under Cayman Islands law to provide for claims of creditors and other requirements of applicable law. The
Sponsor and each Insider agrees to not propose any amendment to the Company’s amended and restated memorandum and articles of association
(a) that would affect the ability of Public Shareholders to exercise redemption rights with respect to the Offering Shares or modify the
substance or timing of the Company’s obligation to redeem 100% of the Offering Shares if the Company does not complete a Business
Combination within 18 months from the closing of the Public Offering or (b) with respect to any other provision relating to shareholders’
rights or pre-initial Business Combination activity, unless the Company provides its Public Shareholders with the opportunity to redeem
their Offering Shares upon approval of any such amendment at a per share price, payable in cash, equal to the aggregate amount then on
deposit in the Trust Account, including interest (which interest shall be net of taxes payable), divided by the number of then outstanding
Offering Shares.

 

     

    

    

 

The Sponsor and each Insider
acknowledges that it, he or she has no right, title, interest or claim of any kind in or to any monies held in the Trust Account or any
other asset of the Company as a result of any liquidation of the Company with respect to the Founder Shares (including any Class A ordinary
shares issuable upon conversion thereof) held by such Sponsor or Insider. The Sponsor and each Insider hereby further waives, with respect
to the Founder Shares (including any Class A ordinary shares issuable upon conversion thereof) held by it, him or her, if any, any redemption
rights it, he or she may have in connection with the consummation of a Business Combination, including, without limitation, any such rights
available in the context of a shareholder vote to approve such Business Combination or in the context of a tender offer made by the Company
to purchase Class A ordinary shares (although the Sponsor and the Insiders shall be entitled to redemption and liquidation rights with
respect to any Offering Shares it or they hold if the Company fails to consummate a Business Combination within 18 months from the date
of the closing of the Public Offering or such later period approved by the Company’s shareholders in accordance with the Company’s
amended and restated memorandum and articles of association).

 

3. In
the event of the liquidation of the Trust Account, the Sponsor (which for purposes of clarification shall not extend to any other equityholders,
members or managers of the Sponsor) agrees to indemnify and hold harmless the Company against any and all loss, liability, claim, damage
and expense whatsoever (including, but not limited to, any and all legal or other expenses reasonably incurred in investigating, preparing
or defending against any litigation, whether pending or threatened, or any claim whatsoever) to which the Company may become subject as
a result of any claim by (i) any third party (other than the Company’s independent public accountants) for services rendered or
products sold to the Company or (ii) a prospective target business with which the Company has discussed entering into a transaction agreement
(a “Target”); provided, however, that such indemnification of the Company by the Sponsor
shall apply only to the extent necessary to ensure that such claims by a third party for services rendered (other than the Company’s
independent public accountants) or products sold to the Company or a Target do not reduce the amount of funds in the Trust Account to
below (i) $10.20 per share of the Offering Shares or (ii) such lesser amount per share of the Offering Shares held in the Trust Account
due to reductions in the value of the trust assets as of the date of the liquidation of the Trust Account, in each case, net of the amount
of interest earned on the property in the Trust Account which may be withdrawn to pay taxes, except as to any claims by a third party
(including a Target) who executed a waiver of any and all rights to seek access to the Trust Account and except as to any claims under
the Company’s indemnity of the Underwriters against certain liabilities, including liabilities under the Securities Act of 1933,
as amended. In the event that any such executed waiver is deemed to be unenforceable against such third party, the Sponsor shall not be
responsible to the extent of any liability for such third party claims. The Sponsor shall have the right to defend against any such claim
with counsel of its choice reasonably satisfactory to the Company if, within 15 days following written receipt of notice of the claim
to the Sponsor, the Sponsor notifies the Company in writing that it shall undertake such defense.

 

4. To
the extent that the Underwriters do not exercise their over-allotment option to purchase up to an additional 1,650,000 Units within 45
days from the date of the Prospectus (and as further described in the Prospectus), the Sponsor agrees that it shall forfeit, at no cost,
a number of Founder Shares in the aggregate equal to 412,500 multiplied by a fraction, (i) the numerator of which is 1,650,000 minus the
number of Units purchased by the Underwriters upon the exercise of their over-allotment option, and (ii) the denominator of which is 1,650,000.

 

All references in this Letter
Agreement to Founder Shares of the Company being forfeited shall take effect as surrenders for no consideration of such Founder Shares
as a matter of Cayman Islands law. The forfeiture will be adjusted to the extent that the over-allotment option is not exercised in full
by the Underwriters so that the Founder Shares will represent 20.0% of the Company’s issued and outstanding Shares after the Public
Offering (assuming the Initial Shareholders do not purchase any units in the Public Offering). The Initial Shareholders further agree
that to the extent that the size of the Public Offering is increased or decreased, the Company will effect a capitalization or share repurchase
or redemption or other appropriate mechanism, as applicable, immediately prior to the consummation of the Public Offering in such amount
as to maintain the ownership of the Initial Shareholders prior to the Public Offering at 20.0% of the Company’s issued and outstanding
Shares upon the consummation of the Public Offering (assuming the Initial Shareholders do not purchase any units in the Public Offering).
In connection with such increase or decrease in the size of the Public Offering, then (A) the references to 1,650,000 in the numerator
and denominator of the formula in the first sentence of this paragraph shall be changed to a number equal to 15% of the number of Class
A ordinary shares included in the Units issued in the Public Offering and (B) the reference to 412,500 in the formula set forth in the
immediately preceding sentence shall be adjusted to such number of Founder Shares that the Founder Shares would represent an aggregate
of 20.0% of the Company’s issued and outstanding Shares after the Public Offering (assuming the Initial Shareholders do not purchase
any Units in the Public Offering).

 

    2

    

    

 

5. The
Sponsor and each Insider hereby agrees and acknowledges that: (i) the Underwriters and the Company would be irreparably injured in the
event of a breach by such Sponsor or Insider of its, his or her obligations under paragraphs 1, 2, 3, 4, 6(a), 6(b) and 8 of this Letter
Agreement (ii) monetary damages may not be an adequate remedy for such breach and (iii) the non-breaching party shall be entitled to seek
injunctive relief, in addition to any other remedy that such party may have in law or in equity, in the event of such breach.

 

6. (a)
The Sponsor and each Insider agrees that it, he or she shall not Transfer any Founder Shares (or Class A ordinary shares issuable upon
conversion thereof) held by such Sponsor or Insider until the earlier of (A) six months after the completion of the Company’s initial
Business Combination or (B) the date on which the Company will consummate a liquidation, merger, amalgamation, share exchange, reorganization,
or other similar transaction after initial Business Combination that results in all of the Company’s shareholders having the right
to exchange their ordinary shares for cash, securities or other property (the “Founder Shares Lock-up Period”),
provided, however, that the Sponsor and each Insider may Transfer during the Founder Shares Lock-up Period up to 50% of the Founder Shares
(or Class A ordinary shares issuable upon conversion thereof) held by the Sponsor or such Insider if following the completion of the Company’s
initial Business Combination the last reported sale price of the Class A ordinary shares equals or exceeds $12.00 per share (as adjusted
for share splits, share dividends, rights issuances, subdivisions, reorganizations, recapitalizations and the like) for any 20 trading
days within any 30-trading day period.

 

(b) The
Sponsor and each Insider agrees that it, he or she shall not Transfer any Private Placement Warrants (or Class A ordinary shares issued
or issuable upon the exercise of the Private Placement Warrants), until three months after the completion of a Business Combination (the
“Private Placement Securities Lock-up Period”, together with the Founder Shares Lock-up Period, the “Lock-up
Periods”).

 

(c) Notwithstanding
the provisions set forth in paragraphs 6(a) and 6(b), Transfers of the Founder Shares, Private Placement Warrants and Class A ordinary
shares issued or issuable upon the exercise or conversion of the Private Placement Warrants or the Founder Shares by the Sponsor and the
Insiders during the Lock-up Periods are permitted (a) to the Company’s officers or directors, any affiliates or family members of
any of the Company’s officers or directors, any members of the Sponsor or any affiliates of the Sponsor; (b) in the case of an individual,
by gift to a member of the individual’s immediate family, or to a trust, the beneficiary of which is a member of the individual’s
immediate family or an affiliate of such person, or to a charitable organization; (c) in the case of an individual, by virtue of laws
of descent and distribution upon death of the individual; (d) in the case of an individual, pursuant to a qualified domestic relations
order; (e) by private sales or transfers made in connection with the consummation of the Company’s Business Combination at prices
no greater than the price at which the securities were originally purchased; (f) in the event of the Company’s liquidation prior
to the Company’s completion of an initial Business Combination; (g) by virtue of the laws of the Cayman Islands or the Sponsor’s
limited partnership agreement, as amended from time to time, upon dissolution of the Sponsor; or (h) in the event of the Company’s
completion of a liquidation, merger, amalgamation, share exchange, reorganization or other similar transaction which results in all of
the Company’s shareholders having the right to exchange their Class A ordinary shares for cash, securities or other property subsequent
to the completion of the Company’s initial Business Combination; provided, however, that, except in the case of clause (f) or with
the Company’s prior consent, these permitted transferees (the “Permitted Transferees”) must enter into
a written agreement with the Company agreeing to be bound by the transfer restrictions in this Agreement.

 

    3

    

    

 

(d) Special Rules Applicable
to Insiders who are affiliated with one of the Representatives. The receipt of Founders Shares (“Representative Founders
Shares”) and Private Placement Warrants (“Representative Private Placement Warrants”) by any Insider that is affiliated
with one of the Representatives have been deemed compensation by FINRA and are therefore subject to a lock-up for a period of 180 days
immediately following the date of the effectiveness of the Registration Statement pursuant to Rule 5110(e)(1) of the FINRA Manual. Pursuant
to FINRA Rule 5110(e)(1), the Representative Founder Shares and the Representative Private Placement Warrants will not be sold during
the offering, or sold, transferred, assigned, pledged, or hypothecated, or be the subject of any hedging, short sale, derivative, put
or call transaction that would result in the economic disposition of the Representative Founder Shares or the Representative Private
Placement Warrants by any person for a period of 180 days immediately following the effective date of the Registration Statement or commencement
of sales of the IPO, except to any underwriter and selected dealer participating in the offering and their bona fide officers or partners,
provided that all Representative Founder Shares and Representative Private Placement Warrants so transferred remain subject to the lockup
restriction above for the remainder of the time period. In addition, notwithstanding the provisions of the warrant agreement, for so
long as any Representative Private Placement Warrants are held by him, her or it (being an employee of a Representative), or his, her
or its designees or affiliates, those Representative Private Placement Warrants may not be exercised after five years from the date of
the effectiveness of the Registration Statement. Lastly, notwithstanding the provisions of the Registration Rights Agreement entered
into concurrent herewith, any Insider that is an employee of a Representative, shall only be entitled to registration rights to the extent
permitted by FINRA Rule 5110(g)(8).

 

7. The
Sponsor and each Insider represents and warrants that it, he or she has never been suspended or expelled from membership in any securities
or commodities exchange or association or had a securities or commodities license or registration denied, suspended or revoked. Each Insider’s
biographical information furnished to the Company, if any (including any such information included in the Prospectus), is true and accurate
in all respects and does not omit any material information with respect to such Insider’s background. The Sponsor and each Insider’s
questionnaire furnished to the Company, if any, is true and accurate in all respects. The Sponsor and each Insider represents and warrants
that: it, he or she is not subject to or a respondent in any legal action for, any injunction, cease-and-desist order or order or stipulation
to desist or refrain from any act or practice relating to the offering of securities in any jurisdiction; it, he or she has never been
convicted of, or pleaded guilty to, any crime (i) involving fraud, (ii) relating to any financial transaction or handling of funds of
another person, or (iii) pertaining to any dealings in any securities and it, he or she is not currently a defendant in any such criminal
proceeding. 

 

8. Except
as disclosed in the Prospectus, neither the Sponsor nor any Insider nor any affiliate of the Sponsor or any Insider, nor any director
or officer of the Company, shall receive from the Company any finder’s fee, reimbursement, consulting fee, monies in respect of
any repayment of a loan or other compensation prior to, or in connection with any services rendered in order to effectuate the consummation
of the Company’s initial Business Combination (regardless of the type of transaction that it is).

 

9. The
Sponsor and each Insider has full right and power, without violating any agreement to which it is bound (including, without limitation,
any non-competition or non-solicitation agreement with any employer or former employer), to enter into this Letter Agreement and, as applicable,
to serve as an officer and/or director on the board of directors of the Company and hereby consents to being named in the Prospectus as
an officer/aand or director of the Company.

 

10. As
used herein, (i) “Business Combination” shall mean a merger, amalgamation, share exchange, asset acquisition,
share purchase, reorganization or similar business combination, involving the Company and one or more businesses; (ii) “Shares”
shall mean, collectively, the Class A ordinary shares and the Class B ordinary shares; (iii) “Founder Shares”
shall mean the 3,162,500 Class B ordinary shares, par value $0.0001 per share, issued and outstanding immediately prior to the consummation
of the Public Offering; (iv) “Initial Shareholders” shall mean the Sponsor and any Insider that holds Founder
Shares; (v) “Private Placement Warrants” shall mean the 4,866,667 warrants to purchase Class A ordinary shares,
exercisable at a price of $11.50 per underlying Class A ordinary share, that the Sponsor has agreed to purchase in a private placement
that shall occur simultaneously with the consummation of the Public Offering, at a price of $1.50 per Private Placement Warrant, for an
aggregate purchase price of $7,300,000; (vi) “Public Shareholders” shall mean the holders of securities issued
in the Public Offering; (vii) “Trust Account” shall mean the trust fund into which a portion of the net proceeds
of the Public Offering shall be deposited; and (viii) “Transfer” shall mean the (a) sale or assignment of, offer
to sell, contract or agreement to sell, hypothecate, pledge, grant of any option to purchase or otherwise dispose of or agreement to dispose
of, directly or indirectly, or establishment or increase of a put equivalent position or liquidation with respect to or decrease of a
call equivalent position within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended (the “Exchange
Act”), and the rules and regulations of the Commission promulgated thereunder with respect to, any security, (b) entry into
any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of any security,
whether any such transaction is to be settled by delivery of such securities, in cash or otherwise, or (c) public announcement of any
intention to effect any transaction specified in clause (a) or (b).

 

    4

    

    

 

11. This
Letter Agreement constitutes the entire agreement and understanding of the parties hereto in respect of the subject matter hereof and
supersedes all prior understandings, agreements, or representations by or among the parties hereto, written or oral, to the extent they
relate in any way to the subject matter hereof or the transactions contemplated hereby. This Letter Agreement may not be changed, amended,
modified or waived (other than to correct a typographical error) as to any particular provision, except by a written instrument executed
by the Sponsor and each Insider that is the subject of any such change, amendment modification or waiver.

 

12. No
party hereto may assign either this Letter Agreement or any of its rights, interests, or obligations hereunder without the prior written
consent of the other parties. Any purported assignment in violation of this paragraph shall be void and ineffectual and shall not operate
to transfer or assign any interest or title to the purported assignee. This Letter Agreement shall be binding on the Sponsor and each
Insider and their respective successors, heirs and assigns and Permitted Transferees.

 

13. This
Letter Agreement may be executed in any number of original or facsimile counterparts and each of such counterparts shall for all purposes
be deemed to be an original, and all such counterparts shall together constitute but one and the same instrument.

 

14. This
Letter 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 Letter 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 Letter Agreement a provision
as similar in terms to such invalid or unenforceable provision as may be possible and be valid and enforceable.

 

15. This
Letter Agreement shall be governed by and construed and enforced in accordance with the laws of the State of New York, without giving
effect to conflicts of law principles that would result in the application of the substantive laws of another jurisdiction. The parties
hereto (i) all agree that any action, proceeding, claim or dispute arising out of, or relating in any way to, this Letter Agreement shall
be brought and enforced in the courts of New York City, in the State of New York, and irrevocably submit to such jurisdiction and venue,
which jurisdiction and venue shall be exclusive and (ii) waive any objection to such exclusive jurisdiction and venue or that such courts
represent an inconvenient forum.

 

16. Any
notice, consent or request to be given in connection with any of the terms or provisions of this Letter Agreement shall be in writing
and shall be sent by express mail or similar private courier service, by certified mail (return receipt requested), by hand delivery,
facsimile transmission or email transmission (read receipt requested).

 

17. Each
party hereto shall not be liable for any breaches or misrepresentations contained in this Letter Agreement by any other party to this
Letter Agreement (including, for the avoidance of doubt, any Insider with respect to any other Insider), and no party shall be liable
or responsible for the obligations of another party, including, without limitation, indemnification obligations and notice obligations.

 

18. This
Letter Agreement shall terminate on the earlier of (i) the expiration of the Lock-up Periods or (ii) the liquidation of the Company; provided, however,
that this Letter Agreement shall earlier terminate in the event that the Public Offering is not consummated and closed by December 31,
2021; provided further that paragraph 3 of this Letter Agreement shall survive any such liquidation.

 

    5

    

    

 

	 	Sincerely,
	 	 
	 	CACTUS HEALTHCARE MANAGEMENT LP
	 	 
	 	By: Cactus Healthcare Management LLC, 

its sole General Partner
	 	 	 
	 	By:	 /s/ Stephen T. Wills 
	 		Name: Stephen T. Wills
	 		Title: Secretary

 

	 	 /s/ Ofer Gonen
	 	Ofer Gonen

 

	 	 /s/ Stephen T. Wills 
	 	Stephen T. Wills

 

	 	 /s/ Nachum Shamir
	 	Nachum Shamir

 

	 	 /s/ Hadar Ron
	 	Hadar Ron

 

	 	  /s/ David J. Shulkin
	 	David J. Shulkin

 

	 	 /s/ David Sidransky
	 	David Sidransky

 

	
    Acknowledged and Agreed:

    

    CACTUS ACQUISITION CORP. 1 LIMITED

     

    
	 
	By:	 /s/ Ofer Gonen	 
	 	Name: Ofer Gonen	 
	 	Title: Chief Executive Officer	 

 

[Signature Page - Letter Agreement]

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