Document:

Exhibit 10.43

 

UNLESS
PERMITTED UNDER SECURITIES LEGISLATION, THE HOLDER OF THIS SECURITY MUST NOT TRADE THE SECURITY BEFORE [l ], 2021.

 

THE COMMON SHARES UNDERLYING THIS CERTIFICATE
ARE LISTED ON THE TORONTO STOCK EXCHANGE (“TSX”); HOWEVER, THE COMMON SHARES CANNOT BE TRADED THROUGH THE FACILITIES OF THE
TSX SINCE THEY ARE NOT FREELY TRANSFERABLE AND CONSEQUENTLY ANY CERTIFICATE REPRESENTING SUCH COMMON SHARES IS NOT “GOOD DELIVERY”
IN SETTLEMENT OF TRANSACTIONS ON THE TSX.

 

THE
WARRANTS EVIDENCED HEREBY ARE EXERCISABLE UNTIL 5:00 P.M. (EST) ON [l],
2025 AFTER WHICH TIME THEY WILL EXPIRE AND BE OF NO FURTHER FORCE AND EFFECT OR VALUE.

 

Certificate
#2020-[l] dated [l], 2020 (the “Issue Date”), representing [l] Warrants.

 

WARRANT CERTIFICATE

 

PROMIS
NEUROSCIENCES INC.

(Incorporated under the laws of Canada)

 

THIS CERTIFIES that, for value received:

 

[HOLDER
NAME]

[ADDRESS]

(hereinafter referred to as the “Holder”)

 

is the registered holder of that number of warrants
(the “Warrants”) of ProMIS Neurosciences Inc. (the “Issuer”) set forth above.

 

Underlying Securities and Exercise Terms

 

Each
Warrant entitles the Holder to purchase one common share (each a “Common Share”) of the Issuer, as constituted on [l],
2020, at a price of CAD$0.20 per Common Share until 5:00 pm (EST) on [l], 2025 (the “Expiry Date”).

 

At any time after the expiry of the four month
hold period applicable to the Warrants, the Issuer may accelerate the expiry of the Warrants if the twenty-day volume-weighted average
trading price of the Common Shares on the TSX, or such other exchange on which the Common Shares may be listed, is greater than $0.60
provided that (a) the Issuer gives notice of the same in writing to the holder of the Warrants, and (b) the accelerated expiry date is
a date which is not less than 30 calendar days after the date of such notice.

 

The Warrants and Common Shares are collectively
referred to herein as the “Securities”.

 

Warrant Exercise Procedure

 

The Warrants may be exercised at any time prior
to the expiry of the Warrants by surrendering to the Issuer at its head office, at Suite 200, 1920 Yonge Street, Toronto, Ontario, M4S
3E2:

 

		(a)	this Warrant Certificate;

 

		(b)	the Subscription Form attached as Schedule “A” hereto, duly completed and executed; and

 

		(c)	a cheque, bank draft or money order made payable to the Issuer in the aggregate amount of the exercise
price,

 

or such other office or agency of the Issuer as
it may designate by notice in writing delivered to the Holder at the Holder’s address stated above. Upon the due exercise of the
Warrants, the Issuer shall issue or cause to be issued the requisite number of Common Shares to be issued to the Holder pursuant to said
exercise, registered in the name of the Holder or such other person as may be specified in the Subscription Form, and each such person
shall be deemed the holder of such Common Shares with effect from the date of such exercise. If Common Shares are to be issued to a person
other than the Holder, the Holder’s signature on the Subscription Form must be guaranteed by a Canadian chartered bank, a Canadian
trust company or a member firm of the TSX. The Issuer will cause the certificates representing such Common Shares to be mailed to the
Holder at the Holder’s address stated above or such other address(es) as may be specified in the Subscription Form, within five
business days of the exercise of the Warrants.

 

     

    - 2 - 

    

 

Upon the due exercise of a Warrant, the Warrant
shall be deemed tendered for purposes thereof by the Holder without further notice or action by the Holder, and all rights under such
Warrant, other than the right to receive certificates representing the Common Shares to which the Holder is entitled on such exercise,
shall wholly cease and terminate and such Warrants shall be void and of no further effect or value.

 

Partial Exercise, Exchange and Replacement
of DRS (or Certificates)

 

The Warrants represented by this Warrant Certificate
may be exercised in whole or in part from time to time. If the Warrants are exercised in part, the Issuer shall deliver, with the Common
Shares issued pursuant to such exercise, a new Warrant Certificate representing the balance of the Warrants remaining unexercised.

 

This Warrant Certificate may be exchanged, upon
its surrender to the Issuer and payment of such administration fee, not exceeding $10.00, as the Issuer may require, for new Warrant Certificates
of like tenor in denominations which in the aggregate represent the number of Warrants represented hereby.

 

If this Warrant Certificate is lost, stolen, mutilated
or destroyed, the Issuer may on such reasonable terms as it may in its discretion impose, including but not limited to the payment of
any administration fee, not exceeding $10.00, and the provision of any indemnity by the Holder, issue and countersign a new Warrant Certificate
of like tenor, denomination and date as the Warrant Certificate so lost, stolen, mutilated or destroyed.

 

All Warrants shall rank pari passu, notwithstanding
the actual date of issue thereof.

 

Covenants

 

The Issuer covenants and agrees that so long as
any Warrants evidenced hereby remain outstanding, it shall reserve and there shall remain unissued out of its authorized capital a sufficient
number of Common Shares to satisfy the right of purchase herein provided for and such Common Shares shall be issued as fully paid and
non-assessable Common Shares and the holders thereof shall not be liable to the Issuer or to its creditors in respect thereof.

 

The
Issuer shall use all reasonable commercial efforts to preserve and maintain its corporate existence and to ensure that the Common Shares
outstanding or issuable from time to time upon the exercise of the Warrants are listed and posted for trading on the TSX (or such
other exchange on which the Common Shares may be listed), provided that this clause shall not be construed as limiting or restricting
the Issuer from completing a consolidation, amalgamation, arrangement, takeover bid or merger that would result in the Common Shares ceasing
to be listed and posted for trading on the TSX (or such other exchange on which the Common Shares may be listed), so long as the holders
of Common Shares receive securities of an entity which is listed on a stock exchange in Canada, or cash, or the holders of the Common
Shares have approved the transaction in accordance with the requirements of applicable corporate and securities laws and the policies
of the TSX (or such other exchange on which the Common Shares may be listed). In addition, the Issuer shall make all requisite filings
under applicable securities legislation necessary to remain a reporting issuer not in default.

 

If the issuance of the Common Shares upon the
exercise of the Warrants requires any filing or registration with or approval of any securities regulatory authority or other governmental
authority or compliance with any other requirement under any law before such Common Shares may be validly issued (other than the filing
of a prospectus or similar disclosure document), the Issuer agrees to take such actions as may be necessary to secure such filing, registration,
approval or compliance, as the case may be.

 

Transfer of Warrants

 

The Warrants are transferable and the term “Warrantholder”
shall mean and include any successor, transferee or assignee of the current or any future Warrantholder. The term “Warrantholder”
shall mean and include any successor of the Warrantholder. The Warrants may be transferred by the Warrantholder completing and delivering
to the Issuer the transfer form attached hereto as Schedule “B”.

 

     

    - 3 - 

    

 

Holding of Warrants

 

The Issuer may treat the Holder as the absolute
owner of the Warrants represented hereby for all purposes, and the Issuer shall not be affected by any notice or knowledge to the contrary
except where the Issuer is required to take notice by statute or by order of a court of competent jurisdiction.

 

Nothing in this Warrant Certificate or in the
holding of a Warrant evidenced hereby shall be construed as conferring upon the Holder any right or interest whatsoever as a shareholder
of the Issuer or entitle the Holder to any right or interest in respect of any Common Shares except as herein expressly provided.

 

Resale Restrictions and Legend Endorsed
on DRS (or Certificates)

 

The Warrants have been, and the Common Shares
will be, issued pursuant to an exemption (an “Exemption”) from the registration and prospectus requirements of applicable
securities law. To the extent that the Issuer relies on such Exemption, the Common Shares may be subject to restrictions on resale and
transferability contained in applicable securities laws.

 

If any of the Securities are subject to a hold
period, or any other restrictions on resale and transferability, the Issuer may place a legend on the certificates representing the Securities
as may be required under applicable securities laws, or as it may otherwise deem necessary or advisable.

 

Any certificate representing Common Shares issued
upon the exercise of this Warrant prior to the date which is four months after the Issue Date will bear the following legends:

 

UNLESS
PERMITTED UNDER SECURITIES LEGISLATION, THE HOLDER OF THIS SECURITY MUST NOT TRADE THE SECURITY BEFORE [l], 2021.

 

and

 

THE SECURITIES REPRESENTED BY THIS CERTIFICATE
ARE LISTED ON THE TORONTO STOCK EXCHANGE (“TSX”); HOWEVER, THE SECURITIES CANNOT BE TRADED THROUGH THE FACILITIES OF THE TSX
SINCE THEY ARE NOT FREELY TRANSFERABLE AND CONSEQUENTLY ANY CERTIFICATE REPRESENTING SUCH SECURITIES IS NOT “GOOD DELIVERY”
IN SETTLEMENT OF TRANSACTIONS ON THE TSX.

 

provided that at any time subsequent to the date
which is four months and one day after the date hereof any certificate representing such Common Shares may be exchanged for a certificate
bearing no such legends.

 

Capital Adjustments

 

Subject
to approval of the TSX (or such other exchange on which the Common Shares may be listed), if at any time after the date hereof
and prior to the expiry of the Warrants, and provided that any Warrants remain unexercised, there shall be:

 

		(a)	a reclassification of the Common Shares, a change in the Common Shares into other shares or securities,
a subdivision or consolidation of the Common Shares into a greater or lesser number of Common Shares, or any other capital reorganization,
or

 

		(b)	a consolidation, amalgamation or merger of the Issuer with or into any other corporation other than a
consolidation, amalgamation or merger which does not result in any reclassification of the outstanding Common Shares or a change of the
Common Shares into other shares or securities,

 

(any of such events being called a “Capital
Reorganization”) any Holders who shall thereafter acquire Common Shares pursuant to the Warrant shall be entitled to receive, at
no additional cost, and shall accept in lieu of the number of Common Shares to which such Holder was theretofore entitled to acquire upon
such exercise, the aggregate number of shares, other securities or other property which such Holder should have been entitled to receive
as a result of such Capital Reorganization if, on the effective date or record date thereof as the case may be, the Holder had been the
registered holder of the number of Common Shares to which such Holder was theretofore entitled to acquire upon exercise of the Warrants.
If determined appropriate by the Issuer acting reasonably, appropriate adjustments shall be made in the application of the provisions
set forth herein with respect to the rights and interests of the Holder relative to a Capital Reorganization, to the end that the provisions
set forth herein shall correspond as nearly as may be reasonably possible to the effect of the Capital Reorganization in relation to any
shares, other securities or other property thereafter deliverable upon the exercise of any Warrants.

 

     

    - 4 - 

    

 

In case at any time:

 

		(a)	the Issuer shall pay any dividend payable in stock upon its Common Shares or make any distribution to
the holders of its Common Shares;

 

		(b)	the Issuer shall offer for subscription pro rata to the holders of its Common Shares any additional shares
or stock of any class or other rights;

 

		(c)	there shall be any subdivision, consolidation, capital reorganization, or reclassification of the capital
stock of the Issuer, or merger, amalgamation or arrangement of the Issuer with, or sale of all or substantially all of its assets to,
another corporation; or

 

		(d)	there shall be a voluntary or involuntary dissolution, liquidation or winding-up of the Issuer,

 

the Issuer shall give to the Holder at least twenty
days’ prior written notice of the date on which the books of the Issuer shall close or a record shall be established for such dividend,
distribution or subscription rights, or for determining rights to vote with respect to such subdivision, consolidation, capital reorganization,
reclassification, merger, amalgamation, arrangement, sale, dissolution, liquidation or winding-up, and in the case of any such subdivision,
consolidation, capital reorganization, reclassification, merger, amalgamation, arrangement, sale, dissolution, liquidation or winding-up,
at least twenty days’ prior written notice of the date when the same shall take place. Such notice in accordance with the foregoing
clause shall also specify, in the case of any such dividend, distribution or subscription rights, the date on which the holders of Common
Shares shall be entitled thereto, and such notice in accordance with the foregoing shall also specify, in the case of any such subdivision,
consolidation, capital reorganization, reclassification, merger, amalgamation, arrangement, sale, dissolution, liquidation or winding-up,
the date on which the holders of Common Shares shall be entitled to exchange their Common Shares for securities or other property deliverable
upon such subdivision, consolidation, capital reorganization, reclassification, merger, amalgamation, arrangement, sale, dissolution,
liquidation or winding-up as the case may be. Each such written notice shall be given by first class mail, postage prepaid, addressed
to the Holder at its address as shown on the books of the Issuer.

 

In case the Issuer, after the date hereof, shall
take any action affecting any securities of the Issuer, other than as previously set out herein, which in the opinion of the directors
would materially affect the rights and interests of the Holder hereunder, the number of Common Shares or other securities which shall
be issuable on the exercise of the Warrants shall be adjusted in such manner, if any, and at such time as the directors, in their sole
discretion, may determine to be equitable in the circumstances, provided that no such adjustment will be made unless all necessary regulatory
approvals, if any, have been obtained. In the event of any question arising with respect to any adjustment provided for herein, such question
shall be conclusively determined by a firm of chartered accountants appointed by the Issuer at its sole discretion (who may be the Issuer’s
auditors) and any such determination shall be binding upon the Issuer and the Holder.

 

No
adjustment shall be made in respect of any event described herein if the Holder is entitled to participate in such event on the same terms,
without amendment, as if the Holder had exercised the Warrants prior to or on the effective date or record date of such event, subject
to the written consent of the TSX (or such other exchange on which the Common Shares may be listed). The adjustments provided for
herein are cumulative and such adjustments shall be made successively whenever an event referred to herein shall occur, subject to the
limitations provided for herein. No adjustment shall be made in the number or kind of Shares or other securities which may be acquired
on the exercise of a Warrant unless it would result in a change of at least one-tenth of a Share or other security. Any adjustment which
may by reason of this paragraph not be required to be made shall be carried forward and then taken into consideration in any subsequent
adjustment.

 

     

    - 5 - 

    

 

Notwithstanding any adjustments provided for herein
or otherwise, the Issuer shall not be required, upon the exercise of any Warrants, to issue fractional Common Shares or other securities
in satisfaction of its obligations hereunder and, except as provided for herein, any fractions shall be eliminated. To the extent that
the Holder would otherwise be entitled to acquire a fraction of a Common Share or other security, such right may be exercised in respect
of such fraction only in combination with other rights which in the aggregate entitle the Holder to acquire a whole number of Common Shares
or other securities. The Holder shall be entitled, upon the elimination of any fraction of a Common Share or other security, to be paid
in cash for the fair market value for the securities so eliminated, always provided that the Issuer shall not be required to make any
payment if for less than $10.00.

 

Representation and Warranty

 

The Issuer hereby represents and warrants with
and to the Holder that the Issuer is duly authorized and has the corporate and lawful power and authority to create and issue this Warrant
and the Common Shares issuable upon the exercise hereof and perform its obligations hereunder and that this Warrant represents a valid,
legal and binding obligation of the Issuer enforceable in accordance with its terms.

 

Miscellaneous Provisions

 

Any delivery or surrender of documents shall be
valid and effective if delivered personally or if sent by registered letter postage prepaid, and any notice shall be valid and effective
if made in writing and transmitted as aforementioned or if transmitted by facsimile with confirmed receipt, in each case addressed to:

 

		(a)	if to the Issuer,

 

ProMIS Neurosciences Inc.

Suite 200, 1920 Yonge Street

Toronto, Ontario

M4S 3E2

 

Facsimile: 416.847.6899

 

		(b)	if to the Holder, at its address appearing in the register of holders of Warrants maintained by the Issuer,

 

and such shall be deemed to have been effectively
made and received on the date of personal delivery, if delivered; on the fourth business day after the time of mailing or upon actual
receipt, whichever is sooner, if sent by registered letter (except the delivery of documents to exercise the Warrants, in which case actual
receipt is required); or on the first business day after the time of facsimile transmission, if sent by facsimile. In the case of a disruption
in postal services, any delivery or surrender of documents or notice sent by mail shall not be deemed to have been effectively made or
received until it is actually delivered. The Issuer and the Holder may from time to time change their address for service hereunder by
notice in writing delivered in one of the foregoing manners.

 

Except as herein provided, any and all of the
rights conferred upon the Holder herein may be enforced by the Holder through appropriate legal proceedings. No recourse under or upon
any covenant, obligation or agreement herein contained shall be had against any shareholder, officer or director of the Issuer, either
directly or through the Issuer, it being expressly agreed and declared that the obligations under the Warrants are solely corporate obligations
of the Issuer and no personal liability whatsoever shall attach to or be incurred by the shareholders, officers or directors of the Issuer
in respect thereof. This Warrant Certificate shall be binding upon the Issuer and its successors.

 

This Warrant shall be governed in accordance with
the laws of British Columbia and the laws of Canada applicable therein. The parties hereby attorn to the jurisdiction of the courts of
British Columbia in the event of any dispute hereunder. Time shall be of the essence hereof.

 

The Issuer shall be entitled to rely on delivery
of an executed Certificate by electronic means, and acceptance by the Holder of such electronic Certificate (including, without limitation
by facsimile or email delivery) shall be legally effective between the Holder and the Issuer in accordance with the terms hereof.

 

     

    - 6 - 

    

 

IN WITNESS WHEREOF the Issuer has caused this
Warrant Certificate to be signed by its duly authorized signatory on the date first written above.

 

	PROMIS NEUROSCIENCES INC.	 
	 	 
	 	 
	By:	 	 
	 	Authorized Signatory	 

 

     

     

    

 

SCHEDULE “A”

SUBSCRIPTION FORM

 

		TO:	ProMIS Neurosciences Inc.

Suite 200, 1920 Yonge Street

Toronto, Ontario

M4S 3E2

 

Facsimile: 416.847 6899

 

 

The Undersigned, being the registered holder of
the attached Warrant Certificate of the Issuer, does hereby irrevocably exercise  of the Warrants evidenced thereby in accordance
with the terms thereof, and accordingly hereby irrevocably subscribes for the Shares (as described therein) to be received thereon and
irrevocably surrenders the Warrant Certificate to the Issuer for such purpose. The Undersigned hereby irrevocably directs that the Shares
to be received by the Undersigned be registered as follows:

 

	Name in Full	Address	No. of

Common Shares
	1.	 	 
	 	 	 
	2.	 	 
	 	 	 
	3.	 	 
	 	 	 

 

IF
COMMON SHARES ARE TO BE ISSUED TO A PERSON OR PERSONS OTHER THAN THE UNDERSIGNED REGISTERED HOLDER, (I) THE SIGNATURE OF THE UNDERSIGNED
MUST BE MEDALLION GUARANTEED, (II) THE UNDERSIGNED MUST PAY TO THE ISSUER ALL APPLICABLE TAXES AND OTHER DUTIES
AND (III) THE TRANSFER FORM SET FORTH IN SCHEDULE “B” TO THE WARRANT CERTIFICATE MUST BE COMPLETED.

 

The Undersigned registered holder hereby represents,
warrants and certifies that:

 

		1.	the Undersigned is a resident at the address set forth in this Subscription Form;

 

		2.	the Undersigned acknowledges that the Warrants and Common Shares (collectively, the “Securities”)
have not been registered under the United States Securities Act of 1933, as amended (the “U.S. Securities Act”), or any applicable
State securities laws and may not be offered or sold in the United States or to U.S. Persons (as defined in Rule 902(k) of Regulation
S under the U.S. Securities Act) without registration under the U.S. Securities Act and any applicable State securities laws, unless an
exemption from registration is available; and

 

		3.	the Undersigned has no intention to distribute, either directly or indirectly, any of the Securities in
the United States or to U.S. Persons.

 

DATED the_____ day of _________, 20___.

 

	 	
    }

    }

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	Signature of Witness

[Please Note Instruction 2]	
    Signature of registered holder or Signatory thereof

     

	 	
    If applicable, print Name and Office of Signatory

     

	Print Name of Witness	
    Print Name of registered holder as on certificate

     

	Address of Witness	
    Street Address

     

	Occupation of Witness	City, Province and Postal Code

 

     

    - 2 - 

    

 

INSTRUCTIONS:

 

1.       The
registered holder of a Warrant may exercise its right to convert the Warrant into Shares by completing and surrendering this Subscription
Form and the ORIGINAL Warrant Certificate representing the Warrants being converted to the Issuer, together with the aggregate amount
of the exercise price for the Shares, as provided for in the Warrant Certificate. DRS (or Certificates) representing the Shares to be
acquired on exercise will be sent by prepaid ordinary mail to the address(es) above within five business days after the receipt of all
required documentation.

 

2.       If
this Subscription Form indicates that Shares are to be issued to a person or persons other than the registered holder of the Warrant to
be converted: (i) the signature of the registered holder on this Subscription Form must be medallion guaranteed by an authorized officer
of a chartered bank, trust company or an investment dealer who is a member of a recognized stock exchange, and (ii) the registered holder
must pay to the Issuer all applicable taxes and other duties and (iii) the Transfer Form set forth in Schedule “B” to the
Warrant Certificate must be completed.

 

3.       If
this Subscription Form is signed by a trustee, executor, administrator, custodian, guardian, attorney, officer of a corporation or any
other person acting in a fiduciary or representative capacity, this Subscription Form must be accompanied by evidence of authority to
sign satisfactory to the Issuer.

 

     

     

    

 

SCHEDULE “B”

FORM OF TRANSFER

 

FOR VALUE RECEIVED, the undersigned hereby sells,
assigns and transfers unto________________________________________________________________________________________________________________(include name and address of the transferee) Warrants exercisable for common shares of ProMIS Neurosciences Inc. (the “Corporation”)
registered in the name of the undersigned on the register of the Corporation maintained therefor, and hereby irrevocably appoints_____________________ 
the attorney of the undersigned to transfer the said securities on the books maintained by the Corporation with full power of substitution.

 

DATED this _______ day of ___________________,
20___.

 

 

Signature of Transferor guaranteed by:

 

	 	 	 
	Medallion Signature Guarantee	 	Signature of Transferor
	Stamp of Transferor	 	 
	 	 	 
	 	 	 
	 	 	 
	 	 	 
	 	 	 
	 	 	Address of Transferor

 

The undersigned transferee hereby certifies that:

 

(check one)

 

		 ̈	said transferee was not offered the Warrants in the United States
and is not in the United States or a “U.S. Person” (as defined in Regulation S under the United States Securities Act
of 1933, as amended (the “U.S. Securities Act”)), and is not acquiring the Warrants for the account or benefit of a person
in the United States or a U.S. Person; or

 

		 ̈	enclosed herewith is an opinion of counsel (which the transferee
understands must be satisfactory to the Corporation) to the effect that no violation of the U.S. Securities Act or applicable securities
laws will result from transfer, exercise or deemed exercise of the Warrants.

 

It is understood
that the Corporation may require additional evidence necessary to verify the foregoing.

 

Notes:

		1.	The signature to this transfer must correspond with the name written upon the face of this Warrant Certificate
in every particular without any changes whatsoever.

 

		2.	If the Transfer Form indicates that common shares are to be issued to a person or persons other than the
registered holder of the Warrant Certificate, the signature on this Transfer Form must be guaranteed by a Canadian chartered bank, or
eligible guarantor institution with membership in an approved signature guarantee medallion program. The guarantor must affix a stamp
bearing the actual words “Signature Guaranteed”.Exhibit 10.44

 

THIS WARRANT CERTIFICATE, AND THE
WARRANTS EVIDENCED HEREBY, WILL BE VOID AND OF NO VALUE UNLESS EXERCISED ON OR BEFORE THE TIME OF EXPIRY (AS DEFINED BELOW).

 

PROMIS NEUROSCIENCES INC.

 

COMMON
SHARE PURCHASE WARRANT

 

Certificate No: 2021-BW-[●]

 

	Number of Warrants:       [●]	 	Date: August 25, 2021

 

1.                            Warrants to Purchase Common Shares. For value received by the undersigned, [●] (the “Holder”),
is the registered holder of [●] common share purchase warrants (the “Warrants”). Each Warrant will entitle
the Holder to subscribe for and purchase one fully paid and non-assessable common share (a “Warrant Share”) of ProMIS
Neurosciences Inc. (the “Corporation”) in lawful money of Canada at any time up to 5:00 p.m. Toronto time on or before
August 25, 2026 (the “Time of Expiry”) at a purchase price of US$0.16 per Warrant Share for each Warrant represented
hereby after which time the Warrants represented hereby shall expire (the price at which one Warrant Share of the Corporation may be purchased
hereunder from time to time being hereinafter referred to as the “Exercise Price”), all subject to adjustment as hereinafter
provided in this Warrant certificate. The Warrants may he exercised by surrendering this Warrant certificate, together with a subscription
form in the form attached as Schedule “A” hereto duly completed and executed and a wire transfer, certified cheque, bank draft
or money order in the lawful money of Canada payable to or to the order of the Corporation, at the office of the Corporation at Suite
200, 1920 Yonge Street, Toronto, Ontario, M4S 3E2, (facsimile: 416.847.6899) or such other address as the Corporation may determine and
notify the Holder, acting reasonably. The Corporation will then issue that number of Warrant Shares specified in the subscription form
as fully paid and non-assessable Warrant Shares.

 

2.                            Partial Exercise. The Holder may subscribe for and purchase less than the full number of Warrant Shares entitled to
be subscribed for and purchased hereunder. In the event that the Holder subscribes for and purchases less than the full number of Warrant
Shares entitled to be subscribed for and purchased under this Warrant certificate prior to the Time of Expiry. the Corporation shall issue
a new Warrant certificate to the Holder in substantially the same form as this Warrant certificate representing such unexercised Warrants,
with appropriate changes.

 

3.                            Delivery of Warrant Shares. Within three business days of receipt of this Warrant certificate together with a subscription
form duly completed and executed in the form attached as Schedule “A” hereto and a wire transfer, certified cheque, bank draft
or money order in lawful money of Canada payable to or to the order of the Corporation, the Corporation shall deliver or cause to be delivered
to the Holder certificates or direct registration system statements representing the Warrant Shares subscribed for and purchased by the
Holder hereunder, and a replacement Warrant certificate, if any.

 

4.                            No Rights of Shareholders. Nothing contained in this Warrant certificate (or in the Warrants evidenced hereby) shall
be construed as conferring upon the Holder any right or interest whatsoever as a holder of common shares of the Corporation (the “Common
Shares”) or any other right or interest except as herein expressly provided.

 

5.                            Adjustment of Subscription and Purchase Rights. From and after the date hereof, the Exercise Price and the number of
Warrant Shares deliverable upon the exercise of the Warrants will be subject to adjustment in the events and in the following manner:

 

		(a)	In case of any reclassification of the Common Shares or change of the Common Shares into other shares,
or in case of the consolidation, arrangement, merger, reorganization or amalgamation of the Corporation with or into any other corporation
or entity which results in any reclassification of the Common Shares or a change of the Common Shares into other shares, or in case of
any transfer of the undertaking or assets of the Corporation as an entirety or substantially as an entirety to another person (any such
event being hereinafter referred to as a “Reclassification of Shares”), at any time prior to the Time of Expiry, the
Holder shall, after the effective date of such Reclassification of Shares and upon exercise of the right to purchase Warrant Shares hereunder,
be entitled to receive, and shall accept, in lieu of the number of Warrant Shares to which the Holder was theretofore entitled upon such
exercise, the kind and amount of shares and other securities or property which the Holder would have been entitled to receive as a result
of such Reclassification of Shares if, on the effective date of such Reclassification of Shares, the Holder had been the registered holder
of the number of Warrant Shares to which the Holder was theretofore entitled upon such exercise. If necessary, appropriate adjustments
shall be made in the application of the provisions set forth in this Section 5 with respect to the rights and interests thereafter of
the Holder of this Warrant certificate to the end that the provisions set forth in this Section 5 shall thereafter correspondingly be
made applicable as nearly as may be reasonable in relation to any shares or other securities or property thereafter deliverable upon the
exercise of the Warrants evidenced hereby.

 

     

    - 2 - 

    

 

(b)           If
and whenever at any time prior to the Time of Expiry the Corporation shall:

 

(i)            subdivide, re-divide or change the Common Shares into a greater number of shares;

 

(ii)           reduce, combine or consolidate the Common Shares into a lesser number of shares; or

 

(iii)          fix a record date for the issue o£ or distribution to, or issue Common Shares, Participating Shares or Convertible Securities
(as such terms are defined in Section 13) to all or substantially all of the holders of Common Shares by way of a stock dividend or other
distribution on the Common Shares payable in Common Shares, Participating Shares or Convertible Securities,

 

(any such event being hereinafter
referred to as “Capital Reorganization”) and any such event results in an adjustment in the Exercise Price pursuant
to paragraph (c), the number of Warrant Shares purchasable pursuant to the Warrants evidenced hereby shall be adjusted contemporaneously
with the adjustment of the Exercise Price by multiplying the number of Warrant Shares theretofore purchasable on the exercise thereof
by a fraction the numerator of which shall he the Exercise Price in effect immediately prior to such adjustment and the denominator of
which shall be the Exercise Price resulting from such adjustment.

 

		(c)	If and whenever at any time prior to the Time of Expiry, the Corporation shall
engage in a Capital Reorganization, the Exercise Price shall, on the effective date, in the case of a subdivision or consolidation, or
on the record date, in the case of a stock dividend, be adjusted by multiplying the Exercise Price in effect on such effective date or
record date by a fraction: (A) the numerator of which shall be the number of Common Shares and Participating Shares outstanding before
giving effect to such Capital Reorganization; and (B) the denominator of which is the number of Common Shares and Participating Shares
outstanding after giving effect to such Capital Reorganization. The number of Common Shares and Participating Shares outstanding shall
include the deemed conversion into or exchange for Common Shares or Participating Shares of any Convertible Securities distributed by
way of stock dividend or other such distribution. Such adjustment shall be made successively whenever any event referred to in this paragraph
shall occur.

 

		(d)	Any issue of Common Shares, Participating Shares or Convertible Securities by way of a stock dividend
or other such distribution shall be deemed to have been made on the record date thereof for the purpose of calculating the number of outstanding
Common Shares under paragraphs (e) and (f).

 

		(e)	If and whenever at any time prior to the Time of Expiry, the Corporation shall fix a record date for the
issuance or distribution of rights, options or warrants to all or substantially all the holders of Common Shares entitling them, for a
period expiring not more than 45 days after such record date, to subscribe for or purchase Common Shares, Participating Shares or Convertible
Securities at a price per share (or having a conversion or exchange price per share) of less than 95% of the Current Market Price of the
Common Shares on such record date (any such event being hereinafter referred to as a “Rights Offering”), the Exercise Price
shall be adjusted immediately after such record date so that it shall equal the price determined by multiplying the Exercise Price in
effect on such record date by a fraction:

 

     

    - 3 - 

    

 

(i)          the numerator of which shall be the aggregate of (A) the number of Common Shares outstanding on such record date; and (B) a number
determined by dividing whichever of the following is applicable by the Current Market Price of the Common Shares on the record date: (1)
the amount obtained by multiplying the number of Common Shares or Participating Shares which the holders of Common Shares are entitled
to subscribe for or purchase by the subscription or purchase price; or (2) the amount obtained by multiplying the maximum number of Common
Shares or Participating Shares which the holders of Common Shares are entitled to receive on the conversion or exchange of the Convertible
Securities by the conversion or exchange price per share; and

 

(ii)         the denominator of which shall be the aggregate of: (A) the number of Common Shares outstanding on such record date; and (B) whichever
of the following is applicable: (1) the number of Common. Shares or Participating Shares which the holders of Common Shares are entitled
to subscribe for or purchase; or (2) the maximum number of Common Shares or Participating Shares which the holders of Common Shares are
entitled to receive on the conversion or exchange of the Convertible Securities,

 

and if any such event results in
an adjustment in the Exercise Price, the number of Warrant Shares purchasable pursuant to the Warrants evidenced hereby shall be adjusted
contemporaneously with the adjustment of the Exercise Price by multiplying the number of Warrant Shares theretofore purchasable on the
exercise thereof by a fraction the numerator of which shall be the Exercise Price in effect immediately prior to such adjustment and the
denominator of which shall be the Exercise Price resulting from such adjustment.

 

Any Warrant Shares owned by or held
for the account of the Corporation shall be deemed not to be outstanding for the purpose of any such computation. Such adjustment shall
be made successively whenever such a record date is fixed.

 

To the extent that such Rights Offering
is not so made or any such rights, options or warrants are not exercised prior to the expiration thereof, the Exercise Price and the number
of Warrant Shares purchasable pursuant to the Warrants evidenced hereby shall then be readjusted to the Exercise Price and number of Warrant
Shares which would then be in effect if such record date had not been fixed or if such expired rights, options or warrants had not been
issued.

 

		(f)	If and whenever at any time prior to the Time of Expiry, the
Corporation shall fix a record date for

 

the issue or distribution to all or substantially
all the holders of Warrant Shares of:

 

		(i)	shares of any class, whether of the Corporation or any other corporation;

 

		(ii)	rights, options or warrants;

 

		(iii)	evidences of indebtedness; or

 

		(iv)	other assets or property;

 

and if such issue or distribution
does not constitute a Capital Reorganization or a Rights Offering or does not consist of rights, options or warrants entitling the holders
of Common Shares to subscribe for or purchase Common Shares, Participating Shares or Convertible Securities for a period expiring not
more than 45 days after such record date and at a price per share (or having a conversion or exchange price per share) of at least 95%
of the Current Market Price of the Common Shares on such record date (any such non-excluded event being hereinafter referred to as a “Special
Distribution”) the Exercise Price shall be adjusted immediately after such record date so that it shall equal the price determined
by multiplying the Exercise Price in effect on such record date by a fraction: (I) the numerator of which shall be the amount by which
(A) the amount obtained by multiplying the number of Common Shares outstanding on such record date by the Current Market Price of the
Common Shares on such record date, exceeds (B) the fair market value (as determined. by the directors of the Corporation, which determination
shall be conclusive, but subject to Toronto Stock Exchange (“TSX”) approval) to the holders of such Common Shares of
such Special Distribution; and (H) the denominator of which shall be the total number of Common Shares outstanding on such record date
multiplied by such Current Market Price, and if any such event results in an adjustment in the Exercise Price, the number of Warrant Shares
purchasable pursuant to the Warrants evidenced hereby shall be adjusted contemporaneously with the adjustment of the Exercise Price by
multiplying the number of Warrant Shares theretofore purchasable on the exercise thereof by a fraction the numerator of which shall be
the Exercise Price in effect immediately prior to such adjustment and the denominator of which shall be the Exercise Price resulting from
such adjustment.

 

     

    - 4 - 

    

 

Any Common Shares owned by or held
for the account of the Corporation shall be deemed not to be outstanding for the purpose of any such computation. Such adjustment shall
be made successively whenever such a record date is fixed.

 

To the extent that such Special Distribution
is not so made or any such rights, options or warrants are not exercised prior to the expiration thereof, the Exercise Price and the number
of Warrant Shares purchasable pursuant to the Warrants evidenced hereby shall then be readjusted to the Exercise Price and number of Warrant
Shares which would then be in effect if such record date had not been fixed or if such expired rights, options or warrants had not been
issued.

 

		(g)	No adjustment in the Exercise Price will be made pursuant to
this Section 5 in respect of the issue from time to time of Common Shares issuable from time to time as dividends paid in the ordinary
course to holders of Common Shares who exercise an option or election to receive substantially equivalent dividends in Common Shares
in lieu of receiving a cash dividend, and any such issue will be deemed not to be a Common Share reorganization.

 

		(h)	In any case in which this Section 5 shall require that an adjustment
shall become effective immediately after a record date for an event referred to herein, the Corporation may defer, until the occurrence
of such event, issuing to the Holder, upon the exercise of the Warrants evidenced hereby after such record date and before the occurrence
of such event, the additional Warrant Shares issuable upon such exercise by reason of the adjustment required by such event; provided,
however, that the Corporation shall deliver to the Holder an appropriate instrument evidencing the Holder's right to receive such additional
Warrant Shares upon the occurrence of the event requiring such adjustment and the right to receive any distributions made on such additional
Warrant Shares on and after such exercise.

 

		(i)	The adjustments provided for in this Section 5 are cumulative,
and shall, in the case of adjustments to the Exercise Price, be computed to the nearest one tenth of one cent and shall apply (without
duplication) to successive Reclassifications of Shares, Capital Reorganizations, Rights Offerings and Special Distributions; provided
that, notwithstanding any other provision of this Section 5, no adjustment of the Exercise Price shall be required unless such adjustment
would require an increase or decrease of at least 1% of the Exercise Price then in effect (except upon a consolidation of the outstanding
Common Shares) (provided, however, that any adjustments which by reason of this paragraph are not required to be made shall be carried
forward and taken into account in any subsequent adjustment).

 

		(j)	No adjustment in the number of Warrant Shares which may be purchased
upon exercise of the Warrants evidenced hereby or in the Exercise Price shall be made pursuant to this Warrant certificate if the Holder
is entitled to participate in such event on the same terms mutatis mutandis as if the Holder had exercised the Warrants evidenced hereby
for Warrant Shares prior to the effective date or record date of such event. Any such participation will be subject to TSX approval.

 

     

    - 5 - 

    

 

		(k)	If at any time prior to the Time of Expiry the Corporation will
take any action affecting the Common Shares, other than an action or an event described above in this Section 5, which in the opinion
of the directors of the Corporation acting reasonably, would have a material adverse effect upon the rights of the Holder under this
Warrant certificate, the Exercise Price and/or the number of Warrant Shares purchasable under this Warrant certificate will be adjusted
in such manner and at such time as the directors may determine to be equitable in the circumstances, but subject to TSX approval.

 

		(1)	In the event of any question arising with respect to the adjustments provided in this Section 5, such
question shall conclusively be determined by the Corporation's auditors and such determination, absent manifest error, shall be binding
upon the Corporation and the Holder.

 

		(in)	As a condition precedent to the taking of any action which would require an adjustment in the subscription
rights pursuant to the Warrants, including the Exercise Price and the number of such classes of shares or other securities or property
which are to be received upon the exercise thereof, the Corporation shall take all corporate action which may, in the opinion of counsel,
be necessary in order that the Corporation has reserved and there will remain unissued out of its authorized capital a sufficient number
of Warrant Shares for issuance upon the exercise of the Warrants evidenced hereby, and that the Corporation may validly and legally issue
as fully paid and non-assessable, all the shares of such classes or other securities, or may validly and legally distribute the property
which the Holder is entitled to receive on the full exercise thereof in accordance with the provisions hereof

 

		(n)	At least 21 days prior to the effective date or record date, as the case may be, of any event which requires
an adjustment in the subscription rights pursuant to this Warrant certificate, including the Exercise Price and the number and classes
of shares or other securities or property which are to be received upon the exercise thereof the Corporation shall give notice to the
Holder of the particulars of such event and the required adjustment. If it is not reasonably practicable for the Corporation to give 21
days' notice as aforesaid, the Corporation will give as much notice as is reasonably practicable in the circumstances.

 

		(o)	Subject to requisite TSX approval, the Corporation may, at its option, at any time during the term of
the Warrants, reduce the then current Exercise Price to any amount deemed appropriate by the board of directors of the Corporation.

 

6.                             Representations and Warranties of the Corporation. The Corporation hereby represents and warrants that it is authorized
to create and issue the Warrants and covenants and agrees that it will cause the Warrant Shares from time to time subscribed for and purchased
in the manner provided in this Warrant certificate and the certificate representing such Warrant Shares to be issued and that, at all
times prior to the Time of Expiry, it will reserve and there will remain unissued a sufficient number of Warrant Shares to satisfy the
right of purchase provided for in this Warrant certificate. All Warrant Shares which are issued upon the exercise of the right of purchase
provided in this Warrant certificate, upon payment therefor of the amount at which such Warrant Shares may be purchased pursuant to the
provisions of this Warrant certificate, shall be and be deemed to be fully paid and non-assessable shares and free from all taxes, liens
and charges with respect to the issue thereof The Corporation hereby represents and warrants that this Warrant certificate is a valid
and enforceable obligation of the Corporation, enforceable in accordance with the provisions of this Warrant certificate.

 

7.                             No Fractional Warrant Shares. The Corporation shall not be required to issue fractional Warrant Shares upon the exercise
of the Warrants evidenced hereby. If any fractional interest in a Warrant Share would be deliverable upon the exercise of the Warrants
evidenced hereby, the Corporation shall, in lieu of delivering any certificate for such fractional interest, round such fractional interest
down to the nearest whole Warrant Share.

 

     

    - 6 - 

    

 

8.                             Transferability.
The Warrants are transferable and the term “Holder” shall mean and include any successor, transferee or assignee
of the current or any future Holder. The term “Holder” shall mean and include any successor of the Holder. The Warrants may
be transferred by the Holder completing and delivering to the Company the transfer form attached hereto as Schedule “B”.

 

9.                             Register.
The Warrants represented by this certificate are part of a class of warrants, 2021-BW. The Corporation shall cause a register
to be kept in which shall be entered the names and addresses of all holders of 2021 -BW warrants of the Corporation and the number of
2021-BW warrants so held by them.

 

10.                           Ranking.
All 2021-BW warrants of the Corporation shall rank pari passu.

 

11.                           Covenants.

 

		(a)	The-Corporation shall use its reasonable best efforts
to maintain its status as a “reporting issuer” (or the equivalent thereof) not in default of the requirements of the applicable
securities laws of the Canadian jurisdictions in which the Corporation is currently a reporting issuer.

 

		(b)	If the issuance of the Warrant Shares upon the exercise of the
Warrants requires any filing or registration with or approval of any securities regulatory authority or other governmental authority
or compliance with any other requirement under any law before such Warrant Shares may be validly issued, the Corporation agrees to use
reasonable best efforts to take such actions as may be necessary to secure such filing, registration, approval or compliance, as the
case may be.

 

		(c)	The Corporation will do, execute, acknowledge and deliver or
cause to be done, executed, acknowledged and delivered, all other acts, deeds and assurances in law as may be reasonably required for
effecting the intentions and provisions of this Warrant Certificate.

 

12.                          Replacement
Certificate. Upon receipt of evidence satisfactory to the Corporation, acting reasonably, of the loss, theft, destruction or
mutilation of this Warrant certificate and, if requested by the Corporation, upon delivery of a bond of indemnity satisfactory to the
Corporation (or, in the case of mutilation, upon surrender of this Warrant certificate), the Corporation will issue to the Holder a replacement
certificate (containing the same terms and conditions as this Warrant certificate).

 

13.                          U.S.
Restrictions. The Warrants and the underlying Warrant Shares have not been and will not be registered under the U.S. Securities
Act and may not be offered, sold, or otherwise transferred in the “United States” (as such term is defined in Regulation S
under the U.S. Securities Act) or to or for the account or benefit of, “U.S. Persons” (as such term is defined in Regulation
S under the U.S. Securities Act) or persons in the United States absent registration under the U.S. Securities Act and all applicable
state securities laws or compliance with the requirements of an exemption therefrom. The Warrants may not be exercised by or on behalf
of a U.S. Person or person in the United States, unless an exemption from registration is available under the U.S. Securities Act and
any applicable state securities laws and, if required by the Corporation, the Corporation has received an opinion of counsel of recognized
standing or other evidence to such effect in form and substance reasonably satisfactory to the Corporation. Notwithstanding anything contained
herein, but subject to compliance with all applicable securities laws and the rules and requirements of the Financial Industry Regulatory
Authority, Inc., the Corporation shall, upon written instructions from the Holder to be delivered to the Corporation within ninety (90)
calendar days following the date of the issuance of this Warrant, transfer all or a portion of this Warrant to officers, directors, employees
and other associated persons of the Holder and other registered dealers, agents and finders. Such transfer shall be effective upon delivery
of this Warrant and the form of assignment attached hereto.

 

14.                          Definitions.

 

		(a)	“Current Market Price”. For the
purpose of any computation under this Warrant certificate, the “Current Market Price” at any date shall be the weighted average
price per share for the 20 consecutive trading days ending two trading days before such date on the TSX of the Common Shares (or, if the
Common. Shares are not listed on such stock exchange, on such other stock exchange on which the Common Shares are listed as may
be selected for such purpose by the directors of the Corporation or, if the Common Shares are not listed on any stock exchange, then on
the over-the-counter market), except that if any stock exchange on which the Common Shares are then trading. requires that the Current
Market Price be calculated in a different manner, then the Current Market Price shall be calculated in such different manner. The weighted
average price shall be determined by dividing the aggregate sale price of all such shares sold on the said exchange or market during the
said 20 consecutive trading days by the total number of such shares so sold;

 

     

    - 7 - 

    

 

		(b)	“Participating Share” means a share (other
than a Common Share) that carries the right to participate in earnings to an unlimited degree; and

 

		(c)	“Convertible Securities” means securities
convertible into or exchangeable for Common Shares or Participating Shares or both.

 

15.                          Successor.
The Corporation shall not enter into any transaction whereby all or substantially all of its undertaking, property and assets
would become the property of any other corporation (herein called a “successor corporation”) whether by way of reorganization,
reconstruction, consolidation, amalgamation, merger, transfer, sale, disposition or otherwise, unless prior to or contemporaneously with
the consummation of such transaction the Corporation and the successor corporation shall have executed such instruments and done such
things as the Corporation, acting reasonably, considers are necessary or advisable to establish that upon the consummation of such transaction:

 

		(a)	the successor corporation will have assumed all the covenants
and obligations of the Corporation under this Warrant certificate, and

 

		(b)	the Warrants will be a valid and binding obligation of the successor
corporation entitling the holder, as against the successor corporation, to all the rights of the holder under this Warrant certificate.

 

Whenever the conditions of this
Section 14 shall have been duly observed and performed, the successor corporation shall possess, and from time to time may exercise, each
and every right and power of the Corporation under this Warrant certificate in the name of the Corporation or otherwise and any act or
proceeding by any provision hereof required to be done or performed by any director or officer of the Corporation may be done and performed
with like force and effect by the like directors or officers of the successor corporation.

 

16.                           General.

 

		(a)	The headings in this certificate are for reference only and
do not constitute terms of the Warrant certificate.

 

		(b)	Whenever the singular or masculine is used in this Warrant certificate
the same shall be deemed to include the plural or the feminine or the body corporate as the context may require.

 

		(c)	This Warrant certificate shall enure to the benefit of and be
binding upon the parties hereto and their respective successors and assigns.

 

		(d)	This Warrant certificate shall be subject to, governed by and
construed in accordance with the laws of the Province of Ontario and the federal laws of Canada applicable therein. The parties hereto
irrevocably attorn and submit to the exclusive jurisdiction of the courts of the Province of Ontario with respect to any dispute related
to or arising from this Warrant.

 

		(e)	All references herein to monetary amounts are references to
lawful money of the United States.

 

		(f)	Any notice which the Corporation is required to give to the
Holder hereunder shall be deemed to be properly given if sent by ordinary prepaid mail to the address for the Holder shown on cover page
of this Warrant certificate (unless the Holder subsequently notifies the Corporation of a change of such address), and such notice will
be deemed to be given at the time of mailing.

 

[Signature
page follows]

 

     

     

    

 

IN WITNESS
WHEREOF the Corporation has caused this Warrant certificate to be executed this 25th day of August, 2021.

 

	 	PROMIS NEUROSCIENCES INC.
	 	 
	 	 
	 	By:	 
	 	 	Authorized Signatory

 

 

Promis — Agent's Warrant Certificate

 

     

     

    

 

SCHEDULE “A”

 

SHARE PURCHASE WARRANT

SUBSCRIPTION FORM

(To be signed only upon exercise of such Warrant)

 

PROMIS NEUROSCIENCES INC.

 

Suite 200, 1920 Yonge Street

Toronto, Ontario

M4S 3E2

 

Facsimile: 416.847.6899

 

Dear Sirs/Mesdames:

 

The undersigned holder of
the attached Warrant Certificate hereby subscribes for ____________common shares (the “Shares”) of ProMIS Neurosciences
Inc. (the “Corporation”) for $ ________________ ($0.16 per Share) pursuant to the terms of the Warrant Certificate
and contemporaneously with the execution and delivery hereof makes payment therefor on the terms specified in the Warrant Certificate.

 

The undersigned holder represents,
warrants and certifies as follows (one (only) of the following must be checked):

 

		A.	The undersigned holder at the time of exercise of the Warrants (i) is not in the United States; (ii) is
not a U.S. person (iii) is not exercising the Warrants on behalf or for the account of a U.S. person or a person in the United States;
and (iv) did not execute or deliver this Subscription Form in the United. States.

 

		B.	The undersigned holder at the time of exercise of the Warrants (i) is the original holder who acquired
the Warrants in the United States in connection with the Corporation's common share offering and who delivered an Agent's Certificate
in the form attached as Exhibit 1 to Schedule “A” of the agency agreement dated August 25, 2021 to the Corporation in connection
with its acquisition of the Warrants; (ii) is exercising the Warrants for its own account, and (iii) is an “accredited investor”
as defined in Rule 501(a) of Regulation D under the United States Securities Act of 1933, as amended (the “U.S. Securities Act”)
at the time of exercise of these Warrants and the representations and warranties of the holder made in the Agent's Certificate remain
true and correct as of the date of exercise of these Warrants.

 

		C.	The undersigned holder has delivered an opinion of counsel of recognized standing or other evidence in
form and substance reasonably satisfactory to the Corporation to the effect that an exemption from the registration requirements of the
U.S. Securities Act, and applicable state securities laws is available for the issuance of the Shares.

 

Note:
The undersigned holder understands that unless Box A above is checked, the certificates representing the Shares will be issued
in definitive physical certificated form and bear a legend restricting transfer without registration under the U.S. Securities Act and
applicable state securities laws unless an exemption from registration is available.

 

Note:
Certificates representing Shares will not be registered or delivered to an address in the United States unless either Box B
or Box C above is checked. If Box C is checked, any opinion or other evidence tendered must be in form and substance reasonably satisfactory
to the Corporation. Holders planning to deliver any such documentation in connection with the exercise of the Warrants should contact
the Corporation in advance to determine whether any opinions or other evidence to be tendered will be acceptable to the Corporation.

 

     

     

    

 

Note:
The terms “U.S. person” and “United States” have the meaning ascribed thereto in Regulation S under the U.S. Securities
Act.

 

It is understood that the
Corporation and the Corporation's transfer agent may require evidence to verify the foregoing representations.

 

The undersigned irrevocably hereby directs
that __________ Shares be issued and delivered as follows:

 

	Name in Full	 	Address	 	Number of Shares
	 	 	 	 	 
	 	 	 	 	 
	 	 	 	 	 
	 	 	 	 	 
	 	 	 	 	 
	 	 	 	 	 

 

 

DATED this_____day of ____________,
__________.

 

		 	 

(Signature)

 

     

     

    

 

SCHEDULE “B”

FORM OF TRANSFER

 

FOR VALUE RECEIVED, the undersigned
hereby sells, assigns and transfers unto

 

(include
name and address of the transferee) Warrants exercisable for common shares of ProMIS Neurosciences Inc. (the “Corporation”)
registered in the name of the undersigned on the register of the Corporation maintained therefor, and hereby irrevocably appoints
 the attorney of the undersigned to transfer the said securities on the books maintained by the Corporation with full power
of substitution.

 

DATED this________day of__________________,
202_.

 

Signature
of Transferor guaranteed by (only required if

 this Form of Transfer is executed by a non-registered 

Warrant holder):

 

	 	 	 
	Medallion Signature Guarantee	 	Signature of Transferor
	Stamp of Transferor	 	 
	 	 	 
	 	 	 
	 	 	 
	 	 	 
	 	 	 
	 	 	Address of Transferor

 

(check one)

 

		 ̈	said transferee was not offered the Warrants in the United States and is
not in the United States or a “U.S. Person” (as defined in Regulation S under the United States Securities Act of 1933,
as amended (the “U.S. Securities Act”)), and is not acquiring the Warrants for the account or benefit of a person
in the United States or a U.S. Person; or

 

		 ̈	enclosed herewith is an opinion of counsel (which the transferee understands
must be satisfactory to the Company) to the effect that no violation of the U.S. Securities Act or applicable securities laws will result
from transfer, exercise or deemed exercise of the Warrants.

 

It is understood that the Company
may require additional evidence necessary to verify the foregoing. Notes:

 

		1.	The signature to this transfer must correspond with the name
written upon the face of this Warrant Certificate in every particular without any changes whatsoever.

 

		2.	If the Transfer Form indicates that common shares are to be
issued to a person or persons other than the registered holder of the Warrant Certificate, the signature on this Transfer Form must be
guaranteed by a Canadian chartered bank, or eligible guarantor institution with membership in an. approved signature guarantee medallion
program. The guarantor must affix a stamp bearing the actual words “Signature Guaranteed”

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