Document:

Exhibit

Exhibit 10.1

Employee (Non-Director) Form for Time & Performance Based Vesting Schedule

Restricted Stock Agreement: #XXX
Fair value per share on Grant Date XX/XX/XXXX - $XX.XX
THE RESTRICTED SHARES AWARDED UNDER THIS RESTRICTED STOCK AWARD AGREEMENT
ARE SUBJECT TO A SUBSTANTIAL RISK OF FORFEITURE UNTIL VESTED.
LMI AEROSPACE, INC.
RESTRICTED STOCK AWARD AGREEMENT
		
	TO:
	 XXXXXX

For the purposes set forth in the LMI Aerospace, Inc. (the "Company") 2015 Long-Term Incentive Plan, as the same may be amended from time to time (the "Plan"), you have been awarded by the Committee shares in words (XX,XXX) shares of the common stock of the Company, $0.02 par value per share (the "Restricted Shares"), which award (the "Award") is subject to and conditioned upon your acceptance of this Restricted Stock Award Agreement (this "Agreement").

The terms of the Award are as set forth in this Agreement and in the Plan. The Plan is incorporated into this Agreement by reference, which means that this Agreement is limited by and subject to the express terms and provisions of the Plan. In the event of a conflict between the terms of this Agreement and the terms of the Plan, the terms of the Plan shall control. Capitalized terms that are not defined in this Agreement have the meanings given to them in the Plan. The more salient terms of the Award are summarized as follows:
1.    Grant Date:    XX/XX/XXXX    (the “Grant Date”)

2.    Number of Restricted Shares Subject to this Award:    XX,XXX (the “Restricted Shares”)

3.    Vesting Provisions.  

(a)    Subject to the terms and conditions herein, (i) XXXX of the Restricted Shares shall remain unvested and restricted unless and until both the Company achieves one or more of the milestones referenced in Exhibit A (the “Milestones”) as assessed by the Committee following the end of the fiscal year XXXX and you have not experienced a Termination Event (as defined below) by the end of such fiscal year, and (ii) the remaining XXXX of the Restricted Shares shall remain unvested and restricted unless and until the period of time commencing on the Grant Date and ending at the close of business on XXXXX XX, XXXX (the “Time Period”) expires without you experiencing a Termination Event. 

(b)    In furtherance of and without limiting the authority of the Committee to adjust the terms of the Award pursuant to Section 17 of the Plan, the Committee may adjust the vesting requirements of this Award to account for any of the events identified in such Section.

(c)    If one or more of the Milestones have been met and you have not experienced a Termination Event during the Time Period, then the number of the Restricted Shares associated with the Milestones that have been met as set forth in Exhibit A shall vest and become unrestricted for purposes of vesting hereunder. A “Termination Event” means the termination of your status as an Employee of the Company and its Affiliates for any reason other than your death or Permanent Disability.

(d)    Prior to vesting, the Restricted Shares shall not be sold, assigned, transferred or otherwise disposed of, or 

mortgaged, pledged or otherwise encumbered except as provided in this Agreement or in the Plan.

4.Termination.  All of the Restricted Shares shall terminate and be forfeited to the Company immediately upon either (a) the failure of the Company to achieve the Milestones as set forth in Section 3(a), or (b) the occurrence of a Termination Event at any time prior to the expiration of the Time Period, other than your death or permanent disability.

5.Rights as a Shareholder.  The Restricted Shares, when vested, will be represented by a stock certificate or certificates registered in your name upon your request. If requested by the Company, such certificate shall bear a legend in substantially the following form:
"The shares represented by this certificate are subject to the terms and conditions (including forfeiture and restrictions against transfer) contained in the LMI Aerospace, Inc. 2015 Long-Term incentive Plan. A copy of such Plan is on file in the office of LMI Aerospace, Inc."
You will deposit such certificates with the Company or its designee, together with stock powers or other instruments of assignment, each endorsed in blank, which will permit transfer to the Company of all or any portion of the Restricted Shares that shall have been forfeited. The Restricted Shares shall constitute issued and outstanding shares of Common Stock for all corporate purposes other than the right to receive and retain dividends or other distributions in respect of such shares ("Retained Distributions"). You will have the right to vote such Restricted Shares and to exercise all other rights, powers and privileges of a holder of Common Stock with respect to such shares, with the exception that (i) you will not be entitled to delivery of the stock certificate or certificates representing such Restricted Shares unless and until they are vested; (ii) the Company will retain custody of the stock certificate or certificates representing the Restricted Stock before vesting; (iii) the Company will retain custody of all distributions made or declared in respect of the Restricted Shares (and such Retained Distributions will be subject to the same restrictions, terms and conditions as are applicable to the Restricted Shares until such time, if ever, as the Restricted Shares with respect to which such Retained Distributions shall have been made, paid or declared shall have become vested, and such Retained Distributions shall not bear interest or be segregated in separate accounts); (iv) you may not sell, assign, transfer or otherwise dispose of, or mortgage, pledge, or otherwise encumber any Restricted Shares or any Retained Distributions unless and until the Restricted Shares vest; and (v) a breach of any restrictions, terms or conditions provided in the Plan or established by the Committee with respect to any Restricted Shares or Retained Distributions will cause a forfeiture of such Restricted Shares and any Retained Distributions with respect thereto.

6.Company Actions upon Vesting.  Upon the vesting of Restricted Shares in accordance with paragraph 3 above and the satisfaction of any other applicable restrictions, terms and conditions, all such Restricted Shares issued to you and any Retained Distributions with respect to such Restricted Shares shall be deemed vested and no longer subject to forfeiture. Upon your request, the Company shall promptly thereafter issue and deliver to you new stock certificates or instruments representing such Restricted Shares and other distributions registered in your name or, if deceased or disabled, your legatee, personal representative or distribute, which do not contain the legend set forth in Section 5 hereof. All such Retained Distributions, if any, less any amounts as are required to be withheld by law, shall be paid to you as of a date no later than two and 1⁄2 months after the year in which the Restricted Shares vest.

7.Beneficiary Designation.  You may designate a beneficiary for each outstanding grant of Restricted Shares in the event of your death. If no beneficiary is designated or the beneficiary does not survive you, the award shall be made to your surviving spouse, or, if there is none, to your estate.

8.Section 83(b) Election.  If you decide to file an election with the Internal Revenue Service to include the Fair Market Value of any of the Restricted Shares awarded hereunder in your gross income as of the date of this Award, you shall promptly furnish to the Company a copy of such election, together with the amount of any federal, state, local or other taxes required to be withheld, to enable the Company to claim an income tax deduction with respect to such election.

9.Taxes. Unless you have filed a Section 83(b) election as described in paragraph 8 above, the vesting of the Restricted Shares will trigger a taxable event. You are ultimately liable and responsible for all taxes owed in connection with the Award, regardless of any action the Company or any of its subsidiaries takes with respect to any tax withholding obligations that arise in connection with the Award. Neither the Company nor any of its subsidiaries makes any representation or undertaking regarding the treatment of any tax withholding in connection with the grant or vesting of the Award or the subsequent sale of Restricted Shares after the Restricted Shares have vested. The Company and its subsidiaries do not commit and are under no obligation to structure the Award to reduce or eliminate your tax liability.

10.Registration.  The Company currently has an effective registration statement on file with the Securities and Exchange Commission with respect to the Restricted Shares. The Company intends to maintain this registration but has no obligation to do so. If the registration ceases to be effective, you will not be able to transfer or sell the Restricted Shares even after the restrictions lapse unless exemptions from registration under applicable securities laws are available. Such exemptions from registration are limited and might be unavailable. You agree that any resale by you of Restricted Shares shall comply in all respects with the requirements of all applicable securities laws, rules and regulations (including, without limitation, the provisions of the Securities Act, the Exchange Act and the respective rules and regulations promulgated thereunder) and any other law, rule or regulation applicable thereto, as such laws, rules and regulations may be amended from time to time. The Company shall not be obligated to either issue the Restricted Shares or permit the resale of any shares following vesting, if such issuance or resale would violate any such requirements.

11.Limitation on Rights; No Right to Future Grants.  By entering into this Agreement and accepting the Award, you acknowledge that: (a) the Plan is discretionary and may be modified, suspended or terminated by the Board at any time as provided in the Plan; (b) the grant of the Award is a one-time benefit and does not create any contractual or other right to receive future grants of awards or benefits in lieu of awards; (c) all determinations with respect to any such future grants, including, but not limited to, the times when awards will be granted, the number of shares of Common Stock subject to each award, the award price, if any, and the time or times when each award will be settled, will be at the sole discretion of the Company; (d) your participation in the Plan is voluntary; (e) the Award is not part of normal or expected compensation for any purpose, including without limitation for calculating any benefits, severance, resignation, termination, redundancy, end of service payments, bonuses, long-term service awards, pension or retirement benefits or similar payments; (f) the future value of the common stock subject to the Award is unknown and cannot be predicted with certainty; and (g) neither the Plan, the Award nor the issuance of the Restricted Shares confers upon you any right to any relationship with the Company or any subsidiary other than as expressly provided hereby or thereby.

12.Execution of Award Agreement.  Please acknowledge your acceptance of the terms and conditions of the Award by signing the original of this Agreement and returning it to the Corporate Secretary of the Company at the principal corporate offices of the Company at 411 Fountain Lakes Blvd., St. Charles, Missouri 63301. If you do not sign and return this Agreement, the Company is not obligated to provide you any benefit hereunder and may refuse to issue the Restricted Shares to you.

13.Governing Law.  The validity, construction, and effect of this Agreement and regulations relating to this Agreement, shall be determined in accordance with the internal laws, and not the law of conflicts, of the State of Missouri.

14.Rights and Remedies Cumulative.  All rights and remedies of the Company and you enumerated in this Agreement shall be cumulative and, except as expressly provided otherwise in this Agreement, none shall exclude any other rights or remedies allowed by law or in equity, and each of said rights or remedies may be exercised and enforced concurrently.

15.Headings.  Headings are given to the sections and subsections of this Agreement solely as a convenience to facilitate reference. Such headings shall not be deemed in any way material or relevant to the construction-or interpretation of this Agreement or any provision thereof.

16.Entire Agreement.  This Agreement and the Plan constitute the entire agreement between the Company and you in respect of the subject matter of this Agreement, and this Agreement supersedes all prior and contemporaneous agreements between the parties hereto in connection with the subject matter of this Agreement. No officer, employee or other servant or agent of the Company, and no servant or agent of you is authorized to make any representation, warranty or other promise not contained in this Agreement. No change, termination or attempted waiver of any of the provisions of this Agreement shall be binding upon any party hereto unless contained in a writing signed by the party to be charged.

17.Successors and Assigns.  At the option of the Company, the rights of the Company under this Agreement may be transferable to any one or more persons or entities, and all covenants and agreements hereunder so transferred shall inure to the benefit of, and be enforceable by, such transferees.
Very truly yours,
LMI AEROSPACE, INC.
By: ________________________ 
Name: _____________________ 
Title: ____________________    

ACCEPTANCE AND ACKNOWLEDGMENT
I, ___________________, a resident of _____________, accept and agree to the terms of the Award described in this Agreement and in the Plan, acknowledge receipt of a copy of this Agreement, the Plan and the applicable Plan Summary, and acknowledge that I have read them carefully and that I fully understand their contents.

Dated:  __________, 20XX

                    
XXX
XXX
XXX

Tax Payer ID: XXX-XX-XXXX

EXHIBIT A -TO BE UPDATED WITH EACH GRANT

MILESTONESExhibit 4.1

 

VISTA GOLD CORP.

 

as the Corporation

 

and

 

COMPUTERSHARE TRUST COMPANY OF CANADA

 

as the Warrant Agent

 

 

 

WARRANT INDENTURE

Providing for the Issue of Warrants

 

Dated as of August
8, 2016

 

 

 

     

     

    

 

TABLE OF CONTENTS

 

	Article 1
	 
	INTERPRETATION
	 	 	 
	Section 1.1	Definitions	2
	Section 1.2	Gender and Number	7
	Section 1.3	Headings, Etc.	7
	Section 1.4	Day not a Business Day	7
	Section 1.5	Time of the Essence	7
	Section 1.6	Monetary References	7
	Section 1.7	Applicable Law	7
	 	 	 
	Article 2
	 
	ISSUE OF WARRANTS
	 	 	 
	Section 2.1	Creation and Issue of Warrants	8
	Section 2.2	Terms of Warrants	8
	Section 2.3	Warrantholder not a Shareholder	8
	Section 2.4	Warrants to Rank Pari Passu	8
	Section 2.5	Form of Warrants and Certificated Warrants	9
	Section 2.6	Book Entry Only Warrants	9
	Section 2.7	Warrant Certificate	11
	Section 2.8	Register of Warrants	12
	Section 2.9	Issue in Substitution for Warrant Certificates Lost, etc.	14
	Section 2.10	Exchange of Warrant Certificates	14
	Section 2.11	Transfer and Ownership of Warrants	14
	Section 2.12	Cancellation of Surrendered Warrants	15
	 	 	 
	Article 3
	 
	EXERCISE OF WARRANTS
	 	 	 
	Section 3.1	Right of Exercise	16
	Section 3.2	Warrant Exercise	16
	Section 3.3	Cashless Exercise or Redemption of Warrants	19
	Section 3.4	Transfer Fees and Taxes	20
	Section 3.5	Warrant Agency	20
	Section 3.6	Effect of Exercise of Warrant Certificates	21
	Section 3.7	Partial Exercise of Warrants; Fractions	22
	Section 3.8	Expiration of Warrants	22
	Section 3.9	Accounting and Recording	23
	Section 3.10	Securities Restrictions	23
	Section 3.11	U.S. Securities Law Matters	25

 

    	 	( i )	 

     

    

  

	Article 4
	 
	ADJUSTMENT OF NUMBER OF COMMON SHARES AND EXERCISE PRICE
	 	 	 
	Section 4.1	Adjustment of Number of Common Shares and Exercise Price	25
	Section 4.2	Entitlement to Common Shares on Exercise of Warrant	30
	Section 4.3	No Adjustment for Certain Transactions	30
	Section 4.4	Determination by Auditors	30
	Section 4.5	Proceedings Prior to any Action Requiring Adjustment	31
	Section 4.6	Certificate of Adjustment	31
	Section 4.7	Notice of Special Matters	31
	Section 4.8	No Action after Notice	31
	Section 4.9	Other Action	32
	Section 4.10	Protection of Warrant Agent	32
	Section 4.11	Participation by Warrantholder	32
	 	 	 
	Article 5
	 
	RIGHTS OF THE CORPORATION AND COVENANTS
	 	 	 
	Section 5.1	Optional Purchases by the Corporation	32
	Section 5.2	General Covenants	33
	Section 5.3	Warrant Agent's Remuneration and Expenses	34
	Section 5.4	Performance of Covenants by Warrant Agent	34
	Section 5.5	Enforceability of Warrants	34
	 	 	 
	Article 6
	 
	ENFORCEMENT
	 	 	 
	Section 6.1	Suits by Registered Warrantholders	35
	Section 6.2	Suits by the Corporation	35
	Section 6.3	Immunity of Shareholders, etc.	35
	Section 6.4	Waiver of Default	35
	 	 	 
	Article 7
	 
	MEETINGS OF REGISTERED WARRANTHOLDERS
	 	 	 
	Section 7.1	Right to Convene Meetings	36
	Section 7.2	Notice	36
	Section 7.3	Chairman	36
	Section 7.4	Quorum	36
	Section 7.5	Power to Adjourn	37
	Section 7.6	Show of Hands	37
	Section 7.7	Poll and Voting	37

 

    	 	( ii )	 

     

    

  

	Section 7.8	Regulations	37
	Section 7.9	Corporation and Warrant Agent May be Represented	38
	Section 7.10	Powers Exercisable by Extraordinary Resolution	39
	Section 7.11	Meaning of Extraordinary Resolution	40
	Section 7.12	Powers Cumulative	40
	Section 7.13	Minutes	41
	Section 7.14	Instruments in Writing	41
	Section 7.15	Binding Effect of Resolutions	41
	Section 7.16	Holdings by Corporation Disregarded	41
	 	 	 
	Article 8
	 
	SUPPLEMENTAL INDENTURES
	 	 	 
	Section 8.1	Provision for Supplemental Indentures for Certain Purposes	42
	Section 8.2	Successor Entities	43
	 	 	 
	Article 9
	 
	CONCERNING THE WARRANT Agent
	 	 	 
	Section 9.1	Trust Indenture Legislation	43
	Section 9.2	Rights and Duties of Warrant Agent	43
	Section 9.3	Evidence, Experts and Advisers	44
	Section 9.4	Documents, Monies, etc. Held by Warrant Agent	45
	Section 9.5	Actions by Warrant Agent to Protect Interest	45
	Section 9.6	Warrant Agent Not Required to Give Security	45
	Section 9.7	Protection of Warrant Agent	46
	Section 9.8	Replacement of Warrant Agent; Successor by Merger	47
	Section 9.9	Conflict of Interest	48
	Section 9.10	Acceptance of Agency	48
	Section 9.11	Warrant Agent Not to be Appointed Receiver	48
	Section 9.12	Warrant Agent Not Required to Give Notice of Default	48
	Section 9.13	Anti-Money Laundering	48
	Section 9.14	Compliance with Privacy Code	49
	Section 9.15	Securities Exchange Commission Certification	49
	 	 	 
	Article 10
	 
	GENERAL
	 	 	 
	Section 10.1	Notice to the Corporation and the Warrant Agent	50
	Section 10.2	Notice to Registered Warrantholders	51
	Section 10.3	Ownership of Warrants	51
	Section 10.4	Counterparts	51
	Section 10.5	Satisfaction and Discharge of Indenture	52

 

    	 	( iii )	 

     

    

  

	Section 10.6	Provisions of Indenture and Warrants for the Sole Benefit of Parties and Registered Warrantholders	52
	Section 10.7	Common Shares or Warrants Owned by the Corporation or its Subsidiaries - Certificate to be Provided	52
	Section 10.8	Severability	53
	Section 10.9	Force Majeure	53
	Section 10.10	Assignment, Successors and Assigns	53
	Section 10.11	Rights of Rescission and Withdrawal for Holders	53

 

SCHEDULES

 

Schedule A – Warrant Certificate

 

Schedule B – Confirmation of Exercise
Price to Warrant Agent

 

Schedule C – Form of Warrant Agreement

 

Schedule D - Withdrawal Notice 

 

    	 	( iv )	 

     

    

 

WARRANT INDENTURE

 

THIS WARRANT INDENTURE
is dated as of August 8, 2016.

 

BETWEEN: 

 

VISTA GOLD CORP.,
a corporation incorporated under the laws of the British Columbia (the "Corporation"),

 

- and -

 

COMPUTERSHARE TRUST
COMPANY OF CANADA, a trust company existing under the laws of Canada and authorized to carry on business in all provinces of
Canada (the "Warrant Agent"),

 

WHEREAS pursuant
to the terms and conditions of an underwriting agreement dated August 2, 2016 (the “Underwriting Agreement”)
between the Corporation, Cantor Fitzgerald Canada Corporation (“CFCC”) and Rodman & Renshaw a unit of H.C. Wainwright
& Co., LLC (together with CFCC, the “Co-Lead Underwriters”), together with Sprott Private Wealth LP, Roth
Capital Partners, LLC and Jet Capital Advisors, LLC (collectively with the Co-Lead Underwriters, the "Underwriters"),
the Corporation proposes to issue and sell 10,750,000 units (“Units”) of the Corporation (the "Offering"),
each Unit comprised of one Common Share (as defined herein) and one-half of one Warrant (as defined herein);

 

AND WHEREAS for
the purpose of the Offering, the Corporation is proposing to issue 5,375,000 Warrants and up to an additional 806,250 Warrants
(assuming the exercise of the over-allotment option (the "Over-Allotment Option") granted to the Underwriters
and 370,875 additional Warrants issued to the Underwriters as Compensation Warrants (as defined herein) pursuant to this
Indenture;

 

AND WHEREAS each
whole Warrant shall, subject to adjustment, entitle the holder thereof to acquire one (1) Common Share upon payment of the Exercise
Price upon the terms and conditions herein set forth;

 

AND WHEREAS as
of the date hereof the Corporation has an effective Registration Statement (as defined below) under the U.S. Securities Act (as
defined below);

 

AND WHEREAS all
acts and deeds necessary have been done and performed to make the Warrants, when created and issued as provided in this Indenture,
legal, valid and binding upon the Corporation with the benefits and subject to the terms of this Indenture;

 

NOW THEREFORE, in
consideration of the premises and mutual covenants hereinafter contained and other good and valuable consideration, the receipt
and sufficiency of which is hereby acknowledged, the Corporation hereby appoints the Warrant Agent as warrant agent to hold the
rights, interests and benefits contained herein for and on behalf of those persons who from time to time become the holders of
Warrants issued pursuant to this Indenture and the parties hereto agree as follows:

 

     

    	 	 -2-	 

    

  

Article 1

 

INTERPRETATION

 

		Section 1.1	Definitions.

 

In this Indenture, including
the recitals and schedules hereto, and in all indentures supplemental hereto:

 

"Adjustment Period"
means the period from the Effective Date up to and including the Expiry Time;

 

"Applicable Legislation"
means any statute of Canada or a province thereof, and the regulations under any such named or other statute, relating to warrant
indentures or to the rights, duties and obligations of warrant agents under warrant indentures, to the extent that such provisions
are at the time in force and applicable to this Indenture;

 

"Applicable Securities Laws"
means the applicable securities laws and regulations, of each of the provinces and territories of Canada, and the applicable federal
and state securities laws and regulations of the United States, together with all related rules, policies, notices and orders of
applicable Regulatory Authorities;

 

“Attribution Parties”
has the meaning set forth in Section 3.10(2);

 

"Auditors" means
a firm of professional accountants duly appointed as auditors of the Corporation, from time to time;

 

"Authenticated"
means (a) with respect to the issuance of a Warrant Certificate, one which has been duly signed by the Corporation and authenticated
by manual signature of an authorized officer of the Warrant Agent, and (b) with respect to the issuance of an Uncertificated Warrant,
one in respect of which the Warrant Agent has completed all Internal Procedures such that the particulars of such Uncertificated
Warrant as required by Section 2.7 are entered in the register of holders of Warrants. "Authenticate", "Authenticating"
and "Authentication" have the appropriate correlative meanings;

 

“Beneficial Ownership Limitation”
has the meaning set forth in Section 3.10(2);

 

"Book Entry Only Participants"
means institutions that participate directly or indirectly in the Depository's book entry registration system for the Warrants;

 

"Book Entry Only Warrants"
means Warrants that are to be or are held only by or on behalf of the Depository;

 

“Bloomberg” means
Bloomberg, L.P.;

 

     

    	 	 -3-	 

    

  

"Business Day" means
any day other than Saturday, Sunday or a statutory or civic holiday, or any other day on which banks are not open for in-person
business in the City of Vancouver, Province of British Columbia;

 

“Buy-in” has the
meaning set forth in Section 3.6(4);

 

"Certificated Warrant"
means a Warrant evidenced by a writing or writings substantially in the form of Schedule "A", attached hereto;

 

“Common Share Delivery Date”
has the meaning set forth in Section 3.6(2);

 

"Common Shares"
means, subject to Article 4, fully paid and non-assessable common shares in the capital of the Corporation as presently constituted;

 

“Compensation Warrants”
means up to 370,875 Warrants granted to the Underwriters pursuant to the Underwriting Agreement;

 

"Confirmation" has
the meaning set forth in Section 3.2(2);

 

“Convertible Security”
means a security of the Corporation (other than the Warrants) or of any other issuer convertible into or exchangeable for or otherwise
carrying the right to acquire Common Shares;

 

"Counsel" means
a barrister or solicitor or a firm of barristers and solicitors retained by the Warrant Agent or retained by the Corporation, which
may or may not be counsel for the Corporation;

 

"Current Market Price"
of the Common Shares at any date means the VWAP for the 20 consecutive Trading Days immediately preceding such date;

 

"Depository" means
CDS Clearing and Depository Services Inc., The Depository Trust Company or such other Person as is designated in writing by the
Corporation to act as depository in respect of the Warrants;

 

"Depository Global Warrants"
means Warrants representing all or a portion of the aggregate number of Warrants issued in the name of the applicable Depository
represented by an Uncertificated Warrant, or if requested by the applicable Depository or the Corporation, by a Warrant Certificate;

 

"Dividends" means
any dividends paid by the Corporation;

 

"Effective Date"
means the date of this Indenture;

 

“Equity Shares”
means the Common Shares and any shares of any other class or series of the Corporation which may from time to time be authorized
for issue if by their terms such shares confer on the holders thereof the right to participate in the distribution of assets upon
the voluntary or involuntary liquidation, dissolution or winding up of the Corporation beyond a fixed sum or a fixed sum plus accrued
dividends;

 

     

    	 	 -4-	 

    

  

"Exchange Rate"
means the number of Common Shares subject to the right of purchase under each Warrant;

 

"Exercise Date"
means, in relation to the Warrants, the Business Day on which an Exercise Notice attached to such Warrant is validly exercised
or deemed to be validly exercised in accordance with Article 3 hereof;

 

"Exercise Notice"
has the meaning set forth in Section 3.2(1);

 

"Exercise
Price" at any time means the price at which a whole Common Share may be purchased by the exercise of a whole Warrant,
which is initially US$1.92 per Common Share, payable in U.S. funds, subject to adjustment
in accordance with the provisions of Article 4;

 

"Expiry
Date" means August 8,
2019;

 

"Expiry Time" means
4:30 p.m. (Toronto time) on the Expiry Date;

 

"Extraordinary Resolution"
has the meaning set forth in 7.11;

 

"Internal Procedures"
means in respect of the making of any one or more entries to, changes in or deletions of any one or more entries in the register
at any time (including without limitation, original issuance or registration of transfer of ownership) the minimum number of the
Warrant Agent's internal procedures customary at such time for the entry, change or deletion made to be complete under the operating
procedures followed at the time by the Warrant Agent, it being understood that neither preparation and issuance shall constitute
part of such procedures for any purpose of this definition;

 

"Issue Date" for
any Warrant is the date such Warrant was issued as indicated on the register;

 

"NYSE MKT"
means the NYSE MKT LLC;

 

"Over-Allotment Option"
has the meaning set forth on the first page of this Warrant Indenture;

 

"Person" means an
individual, body corporate, partnership, trust, warrant agent, executor, administrator, legal representative or any unincorporated
organization;

 

"register" means
the one set of records and accounts maintained by the Warrant Agent pursuant to Section 2.8;

 

"Registered Warrantholders"
means the persons who are registered owners of Warrants as such names appear on the register, and for greater certainty, shall
include the Depository as well as the holders of Uncertificated Warrants appearing on the register of the Warrant Agent;

 

     

    	 	 -5-	 

    

  

"Registration Statement"
means a registration statement filed and effective with the SEC under the U.S. Securities Act registering the offer and sale of
the Common Shares issuable upon exercise of the Warrants;

 

"Regulatory Authorities"
means the securities regulatory authorities in each of the provinces and territories of Canada;

 

“Rights Offering”
has the meaning set forth in 4.1(b);

 

"SEC" means the
United States Securities and Exchange Commission;

 

"Shareholders" means
holders of Common Shares;

 

“Special Distribution”
has the meaning set forth in 4.1(c);

 

"this Warrant Indenture",
"this Indenture", "this Agreement", "hereto" "herein", "hereby",
"hereof" and similar expressions mean and refer to this indenture and any indenture, deed or instrument supplemental
hereto; and the expressions "Article", "Section", "subsection" and "paragraph"
followed by a number, letter or both mean and refer to the specified article, section, subsection or paragraph of this indenture;

 

"Trading Day" means,
a day on which any of the NYSE MKT or the TSX is open for trading or, if the Common Shares are not then listed on the NYSE MKT
or the TSX, a day on which such other exchange or an over-the-counter market on which the Common Shares are listed is open for
trading;

 

“Trading Market”
means any of the following markets or exchanges on which the Common Shares are listed or quoted for trading on the date in question:
the NYSE MKT, the Toronto Stock Exchange, the Nasdaq Capital Market, the Nasdaq Global Market, the Nasdaq Global Select Market,
or the New York Stock Exchange (or any successors to any of the foregoing);

 

"Transaction Instruction"
means a written order signed by the Registered Warrantholder or the Depository or electronic confirmation from the Depository,
entitled to request that one or more actions be taken, or such other form as may be reasonably acceptable to the Warrant Agent,
requesting one or more such actions to be taken in respect of an Uncertificated Warrant;

 

“TSX” means the
Toronto Stock Exchange;

 

"Uncertificated Warrant"
means any Warrant which is not a Certificated Warrant;

 

"United States"
means the United States of America, its territories and possessions, any state of the United States, and the District of Columbia;

 

"U.S. Securities Act"
means the United States Securities Act of 1933, as amended; 

 

"U.S. Exchange Act"
means the United States Securities Exchange Act of 1934, as amended;

 

     

    	 	 -6-	 

    

  

“VWAP” means,
for any date, the price determined by the first of the following clauses that applies: (a) if the Common Shares are then listed
or quoted on a Trading Market, the daily volume weighted average price of the Common Shares for such date (or the nearest preceding
date) on the principal Trading Market based on trading volume as reported by Bloomberg on which the Common Shares are then listed
or quoted as reported by Bloomberg (based on a Trading Day from 9:30 a.m. (Eastern time) to 4:02 p.m. (Eastern time)), (b) if the
Common Shares are not listed or quoted on a Trading Market and is then quoted on OTCQB or OTCQX, the volume weighted average price
of the Common Shares for such date (or the nearest preceding date) on OTCQB or OTCQX as applicable, (c) if the Common Shares are
not then listed or quoted for trading on OTCQB or OTCQX and if prices for the Common Shares are then reported in the “Pink
Sheets” published by OTC Markets Group, Inc. (or a similar organization or agency succeeding to its functions of reporting
prices), the most recent bid price per share of the Common Shares so reported, or (d) in all other cases, the fair market value
of a share of Common Shares as determined by an independent appraiser selected in good faith by the holders of a majority in interest
of the Warrants then outstanding and reasonably acceptable to the Corporation, the fees and expenses of which shall be paid by
the Corporation;

 

"Warrants" means
the Common Share purchase warrants created by and authorized by and issuable under this Indenture, to be issued and countersigned
hereunder in certificated form and/or held through the book entry registration system on a no certificate issued basis, entitling
the holder thereof to purchase one Common Share (subject to adjustment as herein provided) at the Exercise Price prior to the Expiry
Time or means the warrants issued and Authenticated hereunder, whether by way of Warrant Certificate or Uncertificated Warrant;

 

"Warrant Agency"
means the principal offices of the Warrant Agent in Vancouver (Computershare Trust Company of Canada), or such other place as may
be designated in accordance with Section 3.5;

 

"Warrant Agent"
means Computershare Trust Company of Canada, in its capacity as warrant agent of the Warrants, or its successors from time to time;

 

“Warrant Agreement”
means a warrant agreement, in substantially in the form set forth in Schedule "C" hereto, by and between the Corporation
and a Warrantholder, to be administered by the Corporation outside the terms of this Warrant Indenture and Warrant Agency;

 

"Warrant Certificate"
means a certificate, substantially in the form set forth in Schedule "A" hereto, to evidence those Warrants that will
be evidenced by a certificate;

 

"Warrantholders",
or "holders" without reference to Warrants, means the warrantholders as, and in respect of Warrants registered
in the name of the Depository, includes owners of Warrants who beneficially hold securities entitlements in respect of the Warrants
through a Book Entry Only Participant or means, at a particular time, the Persons entered in the register hereinafter mentioned
as holders of Warrants outstanding at such time;

 

     

    	 	 -7-	 

    

  

"Warrantholders' Request"
means an instrument signed in one or more counterparts by Registered Warrantholders entitled to acquire in the aggregate not less
than 50% of the aggregate number of Common Shares which could be acquired pursuant to all Warrants then unexercised and outstanding,
requesting the Warrant Agent to take some action or proceeding specified therein; and "written order of the Corporation",
"written request of the Corporation", "written consent of the Corporation" and "certificate
of the Corporation" mean, respectively, a written order, request, consent and certificate signed in the name of the Corporation
by any one director or officer of the Corporation and may consist of one or more instruments so executed; and

 

“Withdrawal Notice”
means the Withdrawal Notice, in substantially in the form set forth in Schedule "D" hereto, to be delivered by a Registered
Warrantholder upon surrender of to withdraw Warrants represented by Warrant Certificate(s) from this Warrant Indenture and Warrant
Agency in substitution for a Warrant Agreement.

 

		Section 1.2	Gender and Number.

 

Words importing the singular
number or masculine gender shall include the plural number or the feminine or neuter genders, and vice versa.

 

		Section 1.3	Headings, Etc.

 

The division of this Indenture
into Articles and Sections, the provision of a Table of Contents and the insertion of headings are for convenience of reference
only and shall not affect the construction or interpretation of this Indenture or of the Warrants.

 

		Section 1.4	Day not a Business Day.

 

If any day on or before
which any action or notice is required to be taken or given hereunder is not a Business Day, then such action or notice shall be
required to be taken or given on or before the requisite time on the next succeeding day that is a Business Day.

 

		Section 1.5	Time of the Essence.

 

Time shall be of the essence
of this Indenture.

 

		Section 1.6	Monetary References.

 

Whenever any amounts of
money are referred to herein, such amounts shall be deemed to be in lawful money of Canada unless otherwise expressed. References
to "US$" are references to United States dollars.

 

		Section 1.7	Applicable Law.

 

This Indenture, the Warrants,
the Warrant Certificates (including all documents relating thereto, which by common accord have been and will be drafted in English)
shall be construed in accordance with the laws of the Province of British Columbia and the federal laws of Canada applicable therein
and shall be treated in all respects as legally-binding contracts. Each of the parties hereto, which shall include the Warrantholders,
irrevocably attorns to the exclusive jurisdiction of the courts of the Province of British Columbia with respect to all matters
arising out of this Indenture and the transactions contemplated herein.

 

     

    	 	 -8-	 

    

  

Article 2

 

ISSUE
OF WARRANTS

 

		Section 2.1	Creation and Issue of Warrants.

 

A
maximum of 6,552,125 Warrants are hereby created and authorized to be issued in accordance
with the terms and conditions hereof. By written order of the Corporation, the Warrant Agent shall deliver Warrant Certificates
to Registered Warrantholders and record the name of the Registered Warrantholders on the Warrant register. Registration of interests
in Warrants held by the Depository may be evidenced by a position appearing on the register for Warrants of the Warrant Agent for
an amount representing the aggregate number of such Warrants outstanding from time to time.

 

		Section 2.2	Terms of Warrants.

 

		(1)	Subject to the applicable conditions for exercise set out in Article 3 having been satisfied and
subject to adjustment in accordance with Article 4, each Warrant shall entitle each Warrantholder thereof, upon exercise at any
time after the Issue Date and prior to the Expiry Time, to acquire one Common Share upon payment of the Exercise Price.

 

		(2)	No fractional Warrants shall be issued or otherwise provided for hereunder and Warrants may only
be exercised in a sufficient number to acquire whole numbers of Common Shares.

 

		(3)	Each Warrant shall entitle the holder thereof to such other rights and privileges as are set forth
in this Indenture.

 

		(4)	The number of Common Shares which may be purchased pursuant to the Warrants and the Exercise Price
therefor shall be adjusted upon the events and in the manner specified in Article 4.

 

		Section 2.3	Warrantholder not a Shareholder.

 

Except as may be specifically
provided herein, nothing in this Indenture or in the holding of a Warrant Certificate, entitlement to a Warrant or otherwise, shall,
in itself, confer or be construed as conferring upon a Warrantholder any right or interest whatsoever as a Shareholder of the Corporation,
including, but not limited to, the right to vote at, to receive notice of, or to attend, meetings of Shareholders or any other
proceedings of the Corporation, or the right to Dividends and other allocations.

 

		Section 2.4	Warrants to Rank Pari Passu.

 

All Warrants shall rank
equally and without preference over each other, whatever may be the actual date of issue thereof.

 

     

    	 	 -9-	 

    

  

		Section 2.5	Form of Warrants and Certificated Warrants.

 

The Warrants may be issued in both
certificated and uncertificated form, as in the sole discretion of the Holder, subject to relevant securities laws. All Warrants
issued in certificated form shall be evidenced by the Warrant Certificates (including all replacements issued in accordance with
this Indenture), substantially in the form set out in Schedule "A" hereto, which shall be dated as of the Issue Date,
shall bear such distinguishing letters and numbers as the Corporation may, with the approval of the Warrant Agent, prescribe, and
shall be issuable in any denomination excluding fractions. All Warrants issued to the Depository may be in either a certificated
or uncertificated form, such uncertificated form being evidenced by a book position on the register of Warrantholders to be maintained
by the Warrant Agent in accordance with Section 2.6.

 

		Section 2.6	Book Entry Only Warrants.

 

		(1)	Reregistration of beneficial interests in and transfers of Warrants held by the Depository shall
be made only through the book entry registration system and no Warrant Certificates shall be issued in respect of such Warrants
except where physical certificates evidencing ownership in such securities are required or as set out herein or as may be requested
by a Depository, as determined by the Corporation, from time to time. Except as provided in this Section 2.6, owners of beneficial
interests in any Depository Global Warrants shall not be entitled to have Warrants registered in their names and shall not receive
or be entitled to receive Warrants in definitive form or to have their names appear in the register referred to in Section 2.8
herein.

 

		(2)	Notwithstanding any other provision in this Indenture, no Depository Global Warrants may be exchanged
in whole or in part for registered Warrants, and no transfer of a Depository Global Warrant in whole or in part may be registered,
in the name of any Person other than the Depository for such Depository Global Warrants or a nominee thereof unless:

 

		(a)	the Depository notifies the Corporation that it is unwilling or unable to continue to act as depository
in connection with the Book Entry Only Warrants and the Corporation is unable to locate a qualified successor;

 

		(b)	the Corporation determines that the Depository is no longer willing, able or qualified to discharge
properly its responsibilities as holder of the Depository Global Warrants and the Corporation is unable to locate a qualified successor;

 

		(c)	the Depository ceases to be a clearing agency or otherwise ceases to be eligible to be a depository
and the Corporation is unable to locate a qualified successor;

 

		(d)	the Corporation determines that the Warrants shall no longer be held as Book Entry Only Warrants
through the Depository; or

 

     

    	 	 -10-	 

    

  

		(e)	such right is required by Applicable Legislation or Applicable Securities Laws, as determined by
the Corporation and the Corporation's Counsel;

 

following which Warrants for those
holders requesting such shall be issued to the beneficial owners of such Warrants or their nominees as directed by the holder.
The Corporation shall provide an officer's certificate giving notice to the Warrant Agent of the occurrence of any event outlined
in this Section 2.6 (2).

 

		(3)	Subject to the provisions of this Section 2.6, any exchange of Depository Global Warrants for Warrants
which are not Depository Global Warrants may be made in whole or in part in accordance with the provisions of Section 2.10, mutatis
mutandis. All such Warrants issued in exchange for a Depository Global Warrant or any portion thereof shall be registered in
such names as the Depository for such Depository Global Warrants shall direct and shall be entitled to the same benefits and subject
to the same terms and conditions (except insofar as they relate specifically to Depository Global Warrants) as the Depository Global
Warrants or portion thereof surrendered upon such exchange.

 

		(4)	Every Warrant Authenticated upon registration of transfer of a Depository Global Warrant, or in
exchange for or in lieu of a Depository Global Warrant or any portion thereof, whether pursuant to this Section 2.6, or otherwise,
shall be Authenticated in the form of, and shall be, a Depository Global Warrant, unless such Warrant is registered in the name
of a person other than the Depository for such Depository Global Warrant or a nominee thereof.

 

		(5)	Notwithstanding anything to the contrary in this Indenture, subject to applicable law, the Depository
Global Warrant will be issued as an Uncertificated Warrant, unless otherwise requested in writing by the Depositary or the Corporation.

 

		(6)	The rights of beneficial owners of Warrants who hold securities entitlements in respect of the
Warrants through the book entry registration system shall be limited to those established by applicable law and agreements between
the Depository and the Book Entry Only Participants and between such Book Entry Only Participants and the beneficial owners of
Warrants who hold securities entitlements in respect of the Warrants through the book entry registration system, and such rights
must be exercised through a Book Entry Only Participant in accordance with the rules and procedures of the Depository.

 

		(7)	Notwithstanding anything herein to the contrary, neither the Corporation nor the Warrant Agent
nor any agent thereof shall have any responsibility or liability for:

 

		(a)	the electronic records maintained by the Depository relating to any ownership interests or any
other interests in the Warrants or the depository system maintained by the Depository, or payments made on account of any ownership
interest or any other interest of any person in any Warrant represented by an electronic position in the book entry registration
system (other than the Depository or its nominee);

 

     

    	 	 -11-	 

    

  

		(b)	for maintaining, supervising or reviewing any records of the Depository or any Book Entry Only
Participant relating to any such interest; or

 

		(c)	any advice or representation made or given by the Depository or those contained herein that relate
to the rules and regulations of the Depository or any action to be taken by the Depository on its own direction or at the direction
of any Book Entry Only Participant.

 

		(8)	The Corporation may terminate the application of this Section 2.6 in its sole discretion in
which case all Warrants shall be evidenced by Warrant Certificates registered in the name of a Person other than the Depository.

 

		Section 2.7	Warrant Certificate.

 

		(1)	For Warrants issued in certificated form, the form of certificate representing Warrants shall
                                                           be substantially as set out in Schedule "A" hereto or such other form as is authorized from time to time by the
                                                           Warrant Agent and the Corporation. Each Warrant Certificate shall be Authenticated manually on behalf of the Warrant Agent.
                                                           Each Warrant Certificate shall be signed by any one director or officer of the Corporation; whose signature shall appear on
                                                           the Warrant Certificate and may be printed, lithographed or otherwise mechanically reproduced thereon and, in such event,
                                                           certificates so signed are as valid and binding upon the Corporation as if it had been signed manually. Any Warrant
                                                           Certificate which has two signatures as hereinbefore provided shall be valid notwithstanding that one or more of the persons
                                                           whose signature is printed, lithographed or mechanically reproduced no longer holds office at the date of issuance of such
                                                           certificate. The Warrant Certificates may be engraved, printed or lithographed, or partly in one form and partly in another,
                                                           as the Warrant Agent may determine.

 

		(2)	Any Warrant Certificate validly issued in accordance with the terms of this Indenture in effect
at the time of issue of such Warrant Certificate shall, subject to the terms of this Indenture and applicable law, validly entitle
the holder to acquire Common Shares, notwithstanding that the form of such Warrant Certificate may not be in the form currently
required by this Indenture.

 

		(3)	No Warrant shall be considered issued and shall be valid or obligatory or shall entitle the holder
thereof to the benefits of this Indenture, until it has been Authenticated by the Warrant Agent. Authentication by the Warrant
Agent shall not be construed as a representation or warranty by the Warrant Agent as to the validity of this Indenture or of such
Warrant Certificates or Uncertificated Warrants (except the due Authentication thereof) or as to the performance by the Corporation
of its obligations under this Indenture and the Warrant Agent shall in no respect be liable or answerable for the use made of the
Warrants or any of them or of the consideration thereof. Authentication by the Warrant Agent shall be conclusive evidence as against
the Corporation that the Warrants so Authenticated have been duly issued hereunder and that the holder thereof is entitled to the
benefits of this Indenture.

 

     

    	 	 -12-	 

    

  

		(4)	The Warrant Agent shall Authenticate Uncertificated Warrants (whether upon original issuance, exchange,
registration of transfer, or otherwise) by completing its Internal Procedures and the Corporation shall, and hereby acknowledges
that it shall, thereupon be deemed to have duly and validly issued such Uncertificated Warrants under this Indenture. Such Authentication
shall be conclusive evidence that such Uncertificated Warrant has been duly issued hereunder and that the holder or holders are
entitled to the benefits of this Indenture. The register shall be final and conclusive evidence as to all matters relating to Uncertificated
Warrants with respect to which this Indenture requires the Warrant Agent to maintain records or accounts. In case of differences
between the register at any time and any other time the register at the later time shall be controlling, absent manifest error.

 

		(5)	No Certificated Warrant shall be considered issued and Authenticated or, if Authenticated, shall
be obligatory or shall entitle the holder thereof to the benefits of this Indenture, until it has been Authenticated by manual
signature by or on behalf of the Warrant Agent substantially in the form of the Warrant set out in Schedule "A" hereto.
Such Authentication on any such Certificated Warrant shall be conclusive evidence that such Certificated Warrant is duly Authenticated
and is valid and a binding obligation of the Corporation and that the holder is entitled to the benefits of this Indenture. The
Authentication by the Warrant Agent on any such Certificated Warrant hereunder shall not be construed as a representation or warranty
by the Warrant Agent as to the validity of this Indenture or of such Warrant or its issuance (except the due Authentication thereof
and any other warranties by law) or as to the performance by the Corporation of its obligations under this Indenture and the Warrant
Agent shall in no respect be liable or answerable for the use made of the Warrants or any of them or the proceeds thereof.

 

		(6)	No Uncertificated Warrant shall be considered issued and shall be obligatory or shall entitle the
holder thereof to the benefits of this Indenture, until it has been Authenticated by entry on the register of the particulars of
the Uncertificated Warrant. Such entry on the register of the particulars of an Uncertificated Warrant shall be conclusive evidence
that such Uncertificated Warrant is a valid and binding obligation of the Corporation and that the holder is entitled to the benefits
of this Indenture. Authenticating by way of entry on the register shall not be construed as a representation or warranty by the
Warrant Agent as to the validity of this Indenture or of such Warrants (except the due Authentication thereof) or as to the performance
by the Corporation of its obligations under this Indenture and the Warrant Agent shall in no respect be liable or answerable for
the use made of the Uncertificated Warrants or any of them or the proceeds thereof.

 

		Section 2.8	Register of Warrants

 

		(1)	The Warrant Agent shall maintain records and accounts concerning the Warrants, whether certificated
and uncertificated, which shall contain the information called for below with respect to each Warrant, together with such other
information as may be required by law or as the Warrant Agent may elect to record. All such information shall be kept in one set
of accounts and records which the Warrant Agent shall designate (in such manner as shall permit it to be so identified as such
by 

 

     

    	 	 -13-	 

    

  

	 	 	an unaffiliated party) as the register of the holders of Warrants.
    The information to be entered for each account in the register of Warrants at any time shall include (without limitation):

 

		(a)	the name and address of the holder of the Warrants, the date of Authentication thereof and the
number of Warrants;

 

		(b)	whether such Warrant is a Certificated Warrant or an Uncertificated Warrant and, if a Warrant Certificate,
the unique number or code assigned to and imprinted thereupon and, if an Uncertificated Warrant, the unique number or code assigned
thereto if any;

 

		(c)	whether such Warrant has been cancelled; and

 

		(d)	a register of transfers in which all transfers of Warrants and the date and other particulars of
each transfer shall be entered.

 

The register shall be available for
inspection by the Corporation and or any Registered Warrantholder during the Warrant Agent's regular business hours on a Business
Day and upon payment to the Warrant Agent of its reasonable fees. Any Registered Warrantholder exercising such right of inspection
shall first provide an affidavit in form satisfactory to the Corporation and the Warrant Agent stating the name and address of
the Registered Warrantholder and agreeing not to use the information therein except in connection with an effort to call a meeting
of Warrantholders or to influence the voting of Warrantholders at any meeting of Warrantholders.

 

		(2)	Once an Uncertificated Warrant has been Authenticated, the information set forth in the register
with respect thereto at the time of Authentication may be altered, modified, amended, supplemented or otherwise changed only to
reflect exercise or proper instructions to the Warrant Agent from the holder as provided herein, except that the Warrant Agent
may act unilaterally to make purely administrative changes internal to the Warrant Agent and changes to correct errors. Each person
who becomes a holder of an Uncertificated Warrant, by his, her or its acquisition thereof shall be deemed to have irrevocably (i)
consented to the foregoing authority of the Warrant Agent to make such error corrections, and (ii) agreed to pay to the Warrant
Agent, promptly upon written demand, the full amount of all losses and expenses (including without limitation reasonable legal
fees of the Corporation and the Warrant Agent) plus interest, at an appropriate then prevailing rate of interest to the Warrant
Agent, sustained by the Corporation or the Warrant Agent as a proximate result of such error if but only if and only to the extent
that such present or former holder realized any benefit as a result of such error and could reasonably have prevented, forestalled
or minimized such loss and expense by prompt reporting of the error or avoidance of accepting benefits thereof whether or not such
error is or should have been timely detected and corrected by the Warrant Agent; provided, that no person who is a bona fide
purchaser shall have any such obligation to the Corporation or to the Warrant Agent.

 

     

    	 	 -14-	 

    

  

		Section 2.9	Issue in Substitution for Warrant Certificates Lost,
etc.

 

		(1)	If any Warrant Certificate becomes mutilated or is lost, destroyed or stolen, the Corporation,
subject to applicable law, shall issue and thereupon the Warrant Agent shall certify and deliver, a new Warrant Certificate of
like tenor as the one mutilated, lost, destroyed or stolen in exchange for and in place of and upon cancellation of such mutilated
Warrant Certificate, or in lieu of and in substitution for such lost, destroyed or stolen Warrant Certificate, and the substituted
Warrant Certificate shall be in a form approved by the Warrant Agent and the Warrants evidenced thereby shall be entitled to the
benefits hereof and shall rank equally in accordance with its terms with all other Warrants issued or to be issued hereunder.

 

		(2)	The applicant for the issue of a new Warrant Certificate pursuant to this Section 2.9 shall bear
the cost of the issue thereof and in case of loss, destruction or theft shall, as a condition precedent to the issuance thereof,
furnish to the Corporation and to the Warrant Agent such evidence of ownership and of the loss, destruction or theft of the Warrant
Certificate so lost, destroyed or stolen as shall be satisfactory to the Corporation and to the Warrant Agent, in their sole discretion,
and such applicant shall also be required to furnish an indemnity and surety bond in amount and form satisfactory to the Corporation
and the Warrant Agent, in their sole discretion, and shall pay the reasonable charges of the Corporation and the Warrant Agent
in connection therewith.

 

		Section 2.10	Exchange of Warrant Certificates.

 

		(1)	Any one or more Warrant Certificates representing any number of Warrants may, upon compliance with
the reasonable requirements of the Warrant Agent (including compliance with Applicable Securities Laws), be exchanged for one or
more other Warrant Certificates representing the same aggregate number of Warrants as represented by the Warrant Certificate or
Warrant Certificates so exchanged.

 

		(2)	Warrant Certificates may be exchanged only at the Warrant Agency or at any other place that is
designated by the Corporation with the approval of the Warrant Agent. Any Warrant Certificate or duly executed Transaction Instruction
from the holder (or such other instructions, in form satisfactory to the Warrant Agent), tendered for exchange shall be cancelled
and surrendered by the Warrant Agency to the Warrant Agent.

 

		Section 2.11	Transfer and Ownership of Warrants.

 

		(1)	The Warrants may only be transferred on the register kept by the Warrant Agent at the Warrant Agency
by the Registered Warrantholder or its legal representatives or its attorney duly appointed by an instrument in writing in form
and execution satisfactory to the Warrant Agent only upon (a) in the case of a Warrant Certificate, surrendering to the Warrant
Agent at the Warrant Agency the Warrant Certificates representing the Warrants to be transferred together with a duly executed
transfer form as set forth in Schedule "A", (b) in the case of Book Entry Only Warrants, in accordance with procedures
prescribed by the Depository under the book entry registration system, (c) in the case of Uncertificated Warrants, surrendering
to the Warrant Agent at the Warrant Agency, a duly executed Transaction Instruction from

 

     

    	 	 -15-	 

    

  

	 	 	the holder (or such other instructions,
    in form satisfactory to the Warrant Agent), and (d) upon compliance with:

 

		(i)	the conditions herein;

 

		(ii)	such reasonable requirements as the Warrant Agent may prescribe; and

 

		(iii)	all Applicable Securities Laws and requirements of Regulatory Authorities;

 

and such transfer shall be duly noted
in such register by the Warrant Agent. Upon compliance with such requirements, the Warrant Agent shall issue to the transferee
of a Certificated Warrant, a Warrant Certificate, and to the transferee of an Uncertificated Warrant, an Uncertificated Warrant
(or it shall Authenticate and deliver a Certificated Warrant instead, upon request), representing the Warrants transferred and
the transferee of a Book Entry Only Warrant shall be recorded through the relevant Book Entry Only Participant in accordance with
the book entry registration system as the entitlement holder in respect of such Warrants.

 

		(2)	Subject to the provisions of this Indenture and applicable law, the Warrantholder shall be entitled
to the rights and privileges attaching to the Warrants, and the issue of Common Shares by the Corporation upon the exercise of
Warrants in accordance with the terms and conditions herein contained shall discharge all responsibilities of the Corporation and
the Warrant Agent with respect to such Warrants and neither the Corporation nor the Warrant Agent shall be bound to inquire into
the title of any such holder.

 

		Section 2.12	Cancellation of Surrendered Warrants.

 

All Warrant Certificates
surrendered pursuant to Section 2.13, Section 3.1 or Section 3.4 shall be cancelled by the Warrant Agent and upon such circumstances
all such Uncertificated Warrants, as applicable, shall be deemed cancelled and so noted on the register by the Warrant Agent. Upon
request by the Corporation, the Warrant Agent shall furnish to the Corporation a cancellation certificate identifying the Warrant
Certificates so cancelled, the number of Warrants evidenced thereby, the number of Common Shares, if any, issued pursuant to such
Warrants and the details of any Warrant Certificates issued in substitution or exchange for such Warrant Certificates cancelled.

 

		Section 2.13	Withdrawal of Warrants from Warrant Indenture.

 

		(1)	Subject to compliance with Applicable Securities Laws, the requirements of Regulatory Authorities
and this Section 2.13, a Registered Warrantholder (or its legal representatives or its attorney duly appointed by an instrument
in writing in form and execution satisfactory to the Warrant Agent) may elect to withdraw Warrants represented by Warrant Certificates
from this Warrant Indenture in exchange for a Warrant Agreement in the form set forth in Schedule “C” by delivering
the Warrant Certificates representing the Warrants to be withdrawn to the Warrant Agent,

 

     

    	 	 -16-	 

    

  

	 	 	together with a duly executed and
    completed Withdrawal Form in the form set forth as Schedule “D” to each of the Warrant Agent and the Corporation.

 

		(2)	Upon receipt by the Warrant Agent of the Withdrawal Form, and the applicable Warrant Certificates,
the Warrant Agent shall immediately notify the Corporation, and such withdrawal shall thereafter be duly noted in such register
by the Warrant Agent and the number of Warrants evidenced thereby shall be removed from the register and the Warrant Certificate(s)
cancelled. Upon withdrawal from this Warrant Indenture, the Warrant Agent shall have no further obligations with respect to such
Warrants under this Warrant Indenture and no Warrant Agency shall exist with the Warrantholder.

 

		(3)	Immediately upon the delivery to the Warrant Agent and the Corporation of the duly executed and
completed Withdrawal Form in compliance with this Section 2.13 the Warrant Agreement to be issued to such Warrantholder shall be
deemed to have been concurrently issued, and the Person or Persons to whom such Warrant Agreement is to be issued shall be deemed
to have become the holder or holders of record of such Warrants on the date of delivery of the Withdrawal Form and bound by the
terms set forth in the Warrant Agreement.

 

		(4)	As soon as possible following receipt of the written notice from the Warrant Agent referred to
in Section 2.13(2), but in any event no later than one (1) Trading Day after delivery of the Withdrawal Notice to the Warrant Agent
and the Corporation, the Corporation shall cause to be delivered or mailed to the Person or Persons in whose name or names the
Warrant is registered or, if so specified in writing by the holder, cause to be delivered to such Person or Persons at the offices
of the Warrant Agent where the Warrant Certificate was surrendered, the Warrant Agreement.

 

Article 3

EXERCISE
OF WARRANTS

 

		Section 3.1	Right of Exercise.

 

Subject to the provisions
hereof, each Registered Warrantholder may exercise the right conferred on such holder to subscribe for and purchase one Common
Share for each Warrant after the Issue Date and prior to the Expiry Time and in accordance with the conditions herein.

 

If no Registration Statement
is effective under the U.S. Securities Act, or if the prospectus contained therein is not available for the offer and sale of the
Common Shares issuable upon exercise of the Warrants, at any time prior to the Expiry Time, such Warrantholder shall be notified
forthwith by the Warrant Agent that such Warrantholder is entitled to a cashless exercise, in accordance with Section 3.3.

 

		Section 3.2	Warrant Exercise.

 

		(1)	Registered Warrantholders of Warrant Certificates who wish to exercise the Warrants held by them
in order to acquire Common Shares must either:

 

     

    	 	 -17-	 

    

  

		(a)	complete a Transaction Instruction or the exercise form (the "Exercise Notice")
attached to the Warrant Certificate(s) in the form set forth in Schedule "A" hereto, which may be amended by the Corporation
with the consent of the Warrant Agent, if such amendment does not, in the reasonable opinion of the Corporation and the Warrant
Agent, which may be based on the advice of Counsel, materially and adversely affect the rights, entitlements and interests of the
Warrantholders and deliver such certificate(s), the executed Exercise Notice and a certified cheque, bank draft or money order
payable to or to the order of the Corporation for the Exercise Price to the Warrant Agent at the Warrant Agency; or

 

		(b)	complete a Transaction Instruction or the Exercise Notice attached to the Warrant Certificate(s)
in the form set forth in Schedule "A" hereto, and deliver such certificate(s) and the executed Exercise Notice to the
Warrant Agent with a copy of such certificate(s) and the executed Exercise Notice to the Corporation and send a wire transfer to
the Corporation for the Exercise Price in accordance with the following wire transfer instructions:

 

Wells Fargo

Account Name: Vista
Gold Corp

Routing Number:
121000248

Account Number:
4977297647

Swift Code: WFBIUS6S

 

The Corporation will
provide written confirmation in the form attached as Schedule “B” to the Warrant Agent upon receipt of the Exercise
Price in accordance with this section.

 

		(c)	In either case, the Warrants represented by a Warrant Certificate
shall be deemed to be surrendered upon personal delivery of such certificate, Exercise Notice and Exercise Price or, if such documents
are sent by mail or other means of transmission, upon actual receipt thereof by the Warrant Agent at the Warrant Agency.

 

		(2)	A beneficial holder of Uncertificated Warrants evidenced by a security entitlement in respect of
Warrants in the book entry registration system who desires to exercise his or her Warrants must do so by causing a Book Entry Only
Participant to deliver to the Depository on behalf of the entitlement holder, notice of the owner's intention to exercise Warrants
in a manner acceptable to the Depository. Forthwith upon receipt by the Depository of such notice, as well as payment for the Exercise
Price, the Depository shall deliver to the Warrant Agent confirmation of its intention to exercise Warrants ("Confirmation")
in a manner acceptable to the Warrant Agent, including by electronic means through the book entry registration system.

 

	 	(3)	Payment representing the Exercise
    Price must be provided to the appropriate office of the Book Entry Only Participant in a manner acceptable to it. A notice
    in form acceptable to the Book Entry Only Participant and payment from such beneficial

 

 

     

    	 	 -18-	 

    

  

			holder should be provided to the Book Entry Only Participant sufficiently in advance so as to permit the Book
Entry Only Participant to deliver notice and payment to the Depository and for the Depository in turn to deliver notice and payment
to the Warrant Agent prior to the Expiry Time. The Depository will initiate the exercise by way of the Confirmation and forward
the Exercise Price electronically to the Warrant Agent and the Warrant Agent will execute the exercise by issuing to the Depository
through the book entry registration system the Common Shares to which the exercising Warrantholder is entitled pursuant to the
exercise. Any expense associated with the exercise process will be for the account of the entitlement holder exercising the Warrants
and/or the Book Entry Only Participant exercising the Warrants on its behalf.

 

		(4)	By causing a Book Entry Only Participant to deliver notice to the Depository, a Warrantholder shall
be deemed to have irrevocably surrendered his or her Warrants so exercised and appointed such Book Entry Only Participant to act
as his or her exclusive settlement agent with respect to the exercise and the receipt of Common Shares in connection with the obligations
arising from such exercise.

 

		(5)	Any notice which the Depository determines to be incomplete, not in proper form or not duly executed
shall for all purposes be void and of no effect and the exercise to which it relates shall be considered for all purposes not to
have been exercised thereby. A failure by a Book Entry Only Participant to exercise or to give effect to the settlement thereof
in accordance with the Warrantholder's instructions will not give rise to any obligations or liability on the part of the Corporation
or Warrant Agent to the Book Entry Only Participant or the Warrantholder.

 

		(6)	Any exercise form or Exercise Notice referred to in this Section 3.2 shall be signed by the
Registered Warrantholder, or its executors or administrators or other legal representatives or an attorney of the Registered Warrantholder,
duly appointed by an instrument in writing satisfactory to the Warrant Agent but such exercise form need not be executed by the
Depository.

 

		(7)	Any exercise referred to in this Section 3.2 shall require that the entire Exercise Price
for Common Shares subscribed must be paid within one business day of subscription and such Exercise Price and original Exercise
Notice executed by the Registered Warrantholder or the Confirmation from the Depository must be received by the Warrant Agent prior
to the Expiry Time.

 

		(8)	Notwithstanding the foregoing in this Section 3.2, Warrants may only be exercised pursuant
to this Section 3.2 by or on behalf of a Registered Warrantholder, except the Depository or Warrantholder, as applicable,
who makes the certifications set forth on the Exercise Notice set forth in Schedule "A" hereto.

 

		(9)	If the form of Exercise Notice set forth in the Warrant Certificate shall have been amended, the
Corporation shall cause the amended Exercise Notice to be forwarded to all Registered Warrantholders.

 

     

    	 	 -19-	 

    

  

		(10)	Exercise Notices and Confirmations must be delivered to the Warrant Agent at any time during the
Warrant Agent's actual business hours on any Business Day prior to the Expiry Time. Any Exercise Notice or Confirmations received
by the Warrant Agent after business hours on any Business Day other than the Expiry Date will be deemed to have been received by
the Warrant Agent on the next following Business Day.

 

		(11)	Any Warrant with respect to which an Exercise Notice or a Confirmation is not received by the Warrant
Agent before the Expiry Time shall be deemed to have expired and become void and all rights with respect to such Warrants shall
terminate and be cancelled.

 

		(12)	A beneficial owner of Warrants issued in uncertificated form evidenced by a security entitlement
in respect of Warrants in the book entry registration system who desires to exercise his or her Warrants must do so by causing
a Book Entry Only Participant to deliver to the Depository on behalf of the entitlement holder, notice of the owner’s intention
to exercise Warrants in a manner acceptable to the Depository. Forthwith upon receipt by the Depository of such notice, as well
as payment for the aggregate Exercise Price, the Depository shall deliver to the Warrant Agent confirmation of its intention to
exercise Warrants (a “Confirmation”) in a manner acceptable to the Warrant Agent, including by electronic means
through a book based registration system, including CDSX.

 

		Section 3.3	Cashless Exercise of Warrants.

 

		(1)	If, at the time of exercise of any Warrant in accordance with this Indenture, there is no effective
Registration Statement under the U.S. Securities Act, or the prospectus contained therein is not available for the offer and sale
of the Common Shares to the Warrantholder under the U.S Securities Act, then the Warrants may only be exercised, in whole or in
part, at such time by means of a “cashless exercise” in which the Warrantholder shall be entitled to receive a number
of Common Shares equal to the quotient obtained by dividing [(A-B) (X)] by (A), where:

 

		A =	the last VWAP immediately preceding the time of delivery
of the Exercise Form giving rise to the applicable “cashless exercise” (to clarify, the “last VWAP” will
be the last Current Market Price as calculated over an entire Trading Day such that, in the event that a Warrant is exercised
at a time when the Trading Market is open, the prior Trading Day’s VWAP shall be used in this calculation);

 

		B =	the Exercise Price of the Warrant, as adjusted hereunder
(if any); and

 

		X =	the number of Common Shares that would be issuable upon
exercise of the Warrant in accordance with the terms of such Warrant if such exercise were by means of a cash exercise rather
than a cashless exercise.

 

	 	(2)	If Common Shares are issued pursuant
    to such a cashless exercise, the parties acknowledge and agree that in accordance with Section 3(a)(9) of the U.S. Securities

 

 

     

    	 	 -20-	 

    

  

			Act, such Common Shares shall take on the registered characteristics
of the Warrants being exercised. The Corporation agrees not to take any position contrary to this Section 3.3(1).

 

		(3)	Upon receipt of a duly completed Subscription Form that specifies a cashless exercise, the Warrant
Agent will notify the Corporation, which will calculate and provide to the Warrant Agent the number of Common Shares to be allotted
to the Warrantholder.

 

		(4)	Any Warrantholder that holds Warrants registered in the name of CDS and that wishes to exercise
such Warrants under this section by means of a cashless exercise must first withdraw their position from CDS, arrange to have the
applicable Warrant certificated and surrender such warrant certificate to the Warrant Agent for exercise by means of a “cashless
exercise”.

 

For the avoidance of doubt, a Warrantholder
may only exercise his or her warrants by means of “cashless exercise” if there is no effective registration statement
under the U.S. Securities Act registering, or the prospectus contained therein is not available for, the offer and issuance of
the Common Shares to the Warrantholder upon the exercise of his or her Warrants. If there is an effective registration statement
under the U.S. Securities Act registering, or the prospectus contained therein is available for, the offer and issuance of the
Common Shares to the Warrantholder upon the exercise of his or her Warrants, such Warrantholder may only exercise his or her Warrants
in accordance with Section 3.2.

 

		Section 3.4	Transfer Fees and Taxes.

 

If any of the Common Shares
subscribed for are to be issued to a Person or Persons other than the Registered Warrantholder, the Registered Warrantholder shall
execute the form of transfer and will comply with such reasonable requirements as the Warrant Agent may stipulate and will pay
to the Corporation or the Warrant Agent on behalf of the Corporation, all applicable transfer or similar taxes and the Corporation
will not be required to issue or deliver certificates evidencing Common Shares unless or until such Warrantholder shall have paid
to the Corporation or the Warrant Agent on behalf of the Corporation, the amount of such tax or shall have established to the satisfaction
of the Corporation and the Warrant Agent that such tax has been paid or that no tax is due.

 

		Section 3.5	Warrant Agency.

 

To facilitate the exchange,
transfer or exercise of Warrants and compliance with such other terms and conditions hereof as may be required, the Corporation
has appointed the Warrant Agency, as the agency at which Warrants may be surrendered for exchange or transfer or at which Warrants
may be exercised and the Warrant Agent has accepted such appointment. The Corporation may from time to time designate alternate
or additional places as the Warrant Agency (subject to the Warrant Agent's prior approval) and will give notice to the Warrant
Agent of any proposed change of the Warrant Agency. Branch registers shall also be kept at such other place or places, if any,
as the Corporation, with the approval of the Warrant Agent, may designate. The Warrant Agent will from time to time when requested
to do so by the Corporation or any Registered Warrantholder, upon payment of the Warrant Agent's reasonable charges (and in the
case of a Registered 

 

     

    	 	 -21-	 

    

  

Warrantholder the affidavit required by Section 2.8(1)), furnish a list of the names and addresses of Registered
Warrantholders showing the number of Warrants held by each such Registered Warrantholder.

 

		Section 3.6	Effect of Exercise of Warrant Certificates.

 

		(1)	Upon the exercise of Warrant Certificates pursuant to and in compliance with Section 3.2 and
subject to Section 3.3 and Section 3.4, the Common Shares to be issued pursuant to the Warrants exercised shall be deemed to have
been issued and the Person or Persons to whom such Common Shares are to be issued shall be deemed to have become the holder or
holders of record of such Common Shares on the Exercise Date, unless the transfer registers of the Corporation shall be closed
on such date, in which case the Common Shares subscribed for shall be deemed to have been issued and such Person or Persons deemed
to have become the holder or holders of record of such Common Shares, on the date on which such transfer registers are reopened.
It is hereby understood that in order for holders to be holders of Warrants on record on an Exercise Date, beneficial holders must
commence the exercise process sufficiently in advance so that the Warrant Agent is in receipt of all items of exercise at least
one Business Day prior to such Exercise Date.

 

		(2)	Within three (3) Business Days after the Exercise Date with respect to a Warrant (the “Common
Share Delivery Date”), the Warrant Agent shall use its best efforts to cause to be delivered or mailed to the Person
or Persons in whose name or names the Warrant is registered or, if so specified in writing by the holder, cause to be delivered
to such Person or Persons at the Warrant Agency where the Warrant Certificate was surrendered, a certificate or certificates for
the appropriate number of Common Shares subscribed for, or any other appropriate evidence of the issuance of Common Shares to such
Person or Persons in respect of Common Shares issued under the book entry registration system. The Warrant Agent will not be liable
to the Corporation for any payment made by the Corporation under Section 3.6(4) of this Indenture.

 

		(3)	If the Corporation fails to cause the Warrant Agent to deliver to the Warrantholder the Warrant
Shares issuable pursuant to Section 3.6(2) by the Common Share Delivery Date, then the Warrantholder will have the right to rescind
such exercise.

 

	 	(4)	In addition to any other rights available
    to a Warrantholder, if the Corporation fails to cause the Warrant Agent to deliver to the Warrantholder the Common Shares
    issuable in accordance with Section 3.6(2) pursuant to an exercise on or before the Common Share Delivery Date and, if after
    such date, the Warrantholder is required by its broker to purchase (in an open market transaction or otherwise) or the Warrantholder’s
    brokerage firm otherwise purchases, Common Shares to deliver in satisfaction of a sale by the Warrantholder of the Warrant
    Shares that the Warrantholder anticipated receiving upon such exercise (a “Buy-In”), then the Corporation
    shall (A) pay in cash to the Warrantholder the amount, if any, by which (x) the Warrantholder’s total purchase price
    (including brokerage commissions, if any) for the Common Shares so purchased exceeds (y) the amount obtained by multiplying
    (1) the number of Common Shares that the Corporation was required to

 

 

     

    	 	 -22-	 

    

  

			deliver to the Warrantholder in connection
with the exercise at issue, times (2) the price at which the sell order giving rise to such purchase obligation was executed,
and (B) at the option of the Warrantholder, either reinstate the portion of the Warrant and equivalent number of Warrant Shares
for which such exercise was not honoured (in which case such exercise shall be deemed rescinded) or deliver to the Warrantholder
the number of Common Shares that would have been issued had the Corporation timely complied with its delivery obligations under
Section 3.6(2). For example, if the Warrantholder purchases Common Shares having a total purchase price of $11,000 to cover a
Buy-In with respect to an attempted exercise of Common Shares with an aggregate sale price giving rise to such purchase obligation
of $10,000, under clause (A) of the immediately preceding sentence, the Corporation shall be required to pay to the Warrantholder
$1,000. The Warrantholder shall provide the Corporation written notice indicating the amounts payable to the Warrantholder in
respect of the Buy-In and, upon request of the Corporation, evidence of the amount of such loss. Nothing herein shall limit a
Warrantholder’s right to pursue any other remedies available to it under this Indenture, at law or in equity including,
without limitation, a decree of specific performance and/or injunctive relief with respect to the Corporation’s failure
to timely deliver Warrant Shares as required under Section 3.6(2) following the valid exercise of Warrants under this Indenture.

 

		Section 3.7	Partial Exercise of Warrants; Fractions.

 

		(1)	The holder of any Warrants may exercise its right to acquire a number of whole Common Shares less
than the aggregate number which the holder is entitled to acquire pursuant to the Warrants exercised in connection therewith. In
the event of any exercise of a number of Warrants less than the maximum number that the holder is entitled to acquire, the holder
of Warrants upon such exercise shall, in addition, be entitled to receive, without charge therefor, a new Warrant Certificate(s),
bearing the same legend, if applicable, or other appropriate evidence of Warrants, in respect of the balance of the Warrants held
by such holder and which were not then acquired in connection with the applicable exercise thereof.

 

		(2)	Notwithstanding anything herein contained including any adjustment provided for in Article 4, the
Corporation shall not be required, upon the exercise of any Warrants, to issue fractions of Common Shares. Warrants may only be
exercised in a sufficient number to acquire whole numbers of Common Shares.

 

		Section 3.8	Expiration of Warrants.

 

Immediately after the Expiry
Time, all rights under any Warrant in respect of which the right of acquisition provided for herein shall not have been exercised
shall cease and terminate and each Warrant shall be void and of no further force or effect.

 

		Section
                           3.9	Accounting
                                         and Recording.

 

	 	(1)	The Warrant Agent shall promptly account to the Corporation with respect to Warrants exercised,
and shall promptly forward to the Corporation (or into an account or accounts of the Corporation with the bank or trust company
designated by the Corporation for that purpose), all monies received by the Warrant Agent on 

 

     

    	 	 -23-	 

    

   

			the subscription of Common Shares
through the exercise of Warrants. All such monies and any securities or other instruments, from time to time received by the Warrant
Agent shall be received in trust for, and shall be segregated and kept apart by the Warrant Agent for the benefit of the Warrantholders
and the Corporation as their interests may appear.

 

		(2)	The Warrant Agent shall record the particulars of Warrants exercised, which particulars shall include
the names and addresses of the persons who become holders of Common Shares on exercise and the Exercise Date, in respect thereof.
The Warrant Agent shall provide such particulars in writing to the Corporation within five Business Days of any request by the
Corporation therefore.

 

		Section 3.10	Securities Restrictions.

 

		(1)	The Warrant Agent shall be entitled to assume that Common Shares may be issued pursuant to the
exercise of any Warrant without violating the securities laws of any applicable jurisdiction and without legending any certificate
representing the Common Shares unless the Warrant Agent has received notice in writing from the Corporation stating otherwise and
setting forth the restrictions on the exercise of the Warrants and any legend the certificates representing the Common Shares should
bear.

 

		(2)	Neither
                                         the Corporation nor the Warrant Agent shall effect any exercise of a Warrant, and a Warrantholder
                                         shall not have the right to exercise any portion of a Warrant, pursuant to Article 3
                                         or otherwise, to the extent that, after giving effect to such issuance after exercise
                                         as set forth on the applicable Exercise Form, the Warrantholder (together with the Warrantholder’s
                                         Affiliates, and any other Persons acting as a group together with the Warrantholder or
                                         any of the Warrantholder’s Affiliates (such Persons, “Attribution Parties”)),
                                         would beneficially own in excess of the Beneficial Ownership Limitation (as defined below).
                                         For purposes of the foregoing sentence, the number of Common Shares beneficially owned
                                         by the Warrantholder and its Affiliates and Attribution Parties shall include the number
                                         of Common Shares issuable upon exercise of a Warrant with respect to which such determination
                                         is being made, but shall exclude the number of Common Shares that would be issuable upon
                                         (i) exercise of the remaining, non-exercised portion of a Warrant beneficially owned
                                         by the Warrantholder or any of its Affiliates or Attribution Parties, and (ii) exercise
                                         or conversion of the unexercised or unconverted portion of any other securities of the
                                         Corporation (including, without limitation, any other Equity Share equivalents), subject
                                         to a limitation on conversion or exercise analogous to the limitation contained herein,
                                         beneficially owned by the Warrantholder or any of its Affiliates or Attribution Parties.
                                         Except as set forth in the preceding sentence, for purposes of this Section 3.10(2),
                                         beneficial ownership shall be calculated in accordance with Section 13(d) of the U.S.
                                         Exchange Act and the rules and regulations promulgated thereunder, it being acknowledged
                                         by the Warrantholder that neither the Warrant Agent nor the Corporation is representing
                                         to the Warrantholder that such calculation is in compliance with Section 13(d) of the
                                         U.S. Exchange Act and the Warrantholder further acknowledges that it is solely

 

     

    	 	 -24-	 

    

  

			responsible for any schedules required
to be filed in accordance therewith. To the extent that the limitation contained in this Section 3.10(2) applies, the determination
of whether a Warrant is exercisable (in relation to other securities owned by the Warrantholder together with any Affiliates and
Attribution Parties) and of which portion of a Warrant is exercisable shall be in the sole discretion and at the sole responsibility
of the Warrantholder, and the submission of an Exercise Notice shall be deemed to be the Warrantholder’s determination of
whether a Warrant is exercisable (in relation to other securities owned by the Warrantholder together with any Affiliates and
Attribution Parties) and of which portion of a Warrant is exercisable, in each case subject to the Beneficial Ownership Limitation,
and neither the Warrant Agent nor the Corporation shall have any obligation to verify or confirm the accuracy of such determination.
In addition, a determination as to any group status as contemplated above shall be determined in accordance with Section 13(d)
of the U. S. Exchange Act and the rules and regulations promulgated thereunder. For purposes of this Section 3.10(2) in determining
the number of outstanding Common Shares, a Warrantholder may rely on the number of outstanding Common Shares as reflected in (A)
the Corporation’s most recent periodic or annual report filed with the SEC or on SEDAR, as the case may be, (B) a more recent
public announcement by the Corporation, or (C) a more recent written notice by the Corporation or the Corporation’s transfer
agent setting forth the number of Common Shares outstanding. Upon the written or oral request of a Warrantholder, the Corporation
shall, within two Trading Days, confirm orally and in writing to the Warrantholder the number of Common Shares then outstanding.
In any case, the number of outstanding Common Shares shall be determined after giving effect to the conversion or exercise of
securities of the Corporation, including the Warrant being exercised, by the Warrantholder or its Affiliates or Attribution Parties
since the date as of which such number of outstanding Common Shares was reported. The “Beneficial Ownership Limitation”
shall be 4.99% of the number of Common Shares outstanding immediately after giving effect to the issuance of Warrant Shares issuable
upon exercise of the Warrant in question. The Warrantholder, upon written notice to the Corporation, may increase or decrease
the Beneficial Ownership Limitation provisions of this Section 3.10(2), provided that the Beneficial Ownership Limitation in no
event exceeds 9.99% of the number of Common Shares outstanding immediately after giving effect to the issuance of Warrant Shares
upon exercise of the Warrant in question held by the Warrantholder and the provisions of this Section 3.10(2) shall continue to
apply. Any increase in the Beneficial Ownership Limitation will not be effective until the sixty-first (61st) day after such notice
is delivered to the Corporation. The provisions of this paragraph shall be construed and implemented in a manner otherwise than
in strict conformity with the terms of this Section 3.10(2) to correct this paragraph (or any portion hereof) that may be defective
or inconsistent with the intended Beneficial Ownership Limitation herein contained or to make changes or supplements necessary
or desirable to properly give effect to such limitation. The limitations contained in this Section 3.10(2) shall apply to a successor
holder of a Warrant.

 

     

    	 	 -25-	 

    

  

		Section 3.11	U.S. Securities Law Matters.

 

		(1)	In connection with any exercise of Warrants, if it is required by law, the Corporation shall cause
to be delivered to any person in whose name the Common Shares issuable upon exercise of the Warrants are to be issued a prospectus
that complies with the U.S. Securities Act and that is a part of the Registration Statement. For so long as any Warrants remain
outstanding, the Corporation shall use its commercially reasonable efforts to (i) keep the Registration Statement continuously
effective and ensure that the prospectus contained therein is available, and (ii) avoid the issuance of, or, if issued, obtain
the withdrawal of any order enjoining or suspending the use or effectiveness of the Registration Statement or related prospectus
contained therein or the lifting of any suspension of the qualification (or exemption from qualification) of any of the Warrants
for sale in the United States, at the earliest practicable moment. All expenses incidental to the Corporation’s performance
of or compliance with the foregoing provisions will be borne by the Corporation, including, without limitation: (i) all registration
and filing fees and expenses; (ii) all fees and expenses of compliance with federal securities and state Blue Sky securities laws;
and (iii) all fees and disbursements of counsel for the Corporation, independent certified public accountants of the Corporation
and technical experts retained by the Corporation whose consent is required to be provided with respect to any Registration Statement.

 

		(2)	The Corporation will notify the Warrant Agent when a Registration Statement becomes effective under
the U.S. Securities Act, and the Warrant Agent will notify the Registered Warrantholders as required. Thereafter, the Warrant Agent
may assume that the Registration Statement remains effective, and that the prospectus contained therein is available, until otherwise
notified in writing by the Corporation that the Registration Statement is no longer effective, or that such prospectus is not available.
The Corporation shall at all times be obligated to provide prompt notice to the Warrant Agent regarding any change in the effectiveness
of the Registration Statement or the availability of the prospectus.

 

Article 4

 

ADJUSTMENT
OF NUMBER OF COMMON SHARES AND EXERCISE PRICE

 

		Section 4.1	Adjustment of Number of Common Shares
                                         and Exercise Price.

 

The subscription rights
in effect under the Warrants for Common Shares issuable upon the exercise of the Warrants shall be subject to adjustment from time
to time as follows:

 

		(a)	if, at any time during the Adjustment Period , the Corporation shall:

 

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

 

		(ii)	reduce, combine or consolidate its outstanding Common Shares into a smaller number of Common Shares;
or

 

     

    	 	 -26-	 

    

  

		(iii)	issue Common Shares or securities exchangeable for, or convertible into, Common Shares to all or
substantially all of the holders of Common Shares by way of distribution (other than a distribution of Common Shares upon the exercise
of Warrants);

 

the Exercise Price
in effect on the effective date of such subdivision, re-division, change, reduction, combination, consolidation or on the record
date of such distribution, as the case may be, shall in the case of the events referred to in (i) or (iii) above be decreased in
proportion to the number of outstanding Common Shares resulting from such subdivision, re-division, change or distribution, or
shall, in the case of the events referred to in (ii) above, be increased in proportion to the number of outstanding Common Shares
resulting from such reduction, combination or consolidation. Such adjustment shall be made successively whenever any event referred
to in this Section 4.1(a) shall occur. Upon any adjustment of the Exercise Price pursuant to Section 4.1(a), the Exchange
Rate shall be contemporaneously adjusted by multiplying the number of Common Shares theretofore obtainable on the exercise thereof
by a fraction of which the numerator shall be the Exercise Price in effect immediately prior to such adjustment and the denominator
shall be the Exercise Price resulting from such adjustment;

 

		(b)	if and whenever at any time during the Adjustment Period, the Corporation shall fix a record date
for the issuance of rights, options or warrants to all or substantially all the holders of its outstanding Common Shares entitling
them, for a period expiring not more than 45 days after such record date, to subscribe for or purchase Common Shares (or securities
convertible or exchangeable into Common Shares) on such record date (a "Rights Offering"), then, subject to the
approval of the Toronto Stock Exchange and the consent of a majority of the Registered Warrantholders, given in accordance with
Article 7, in addition to any adjustments pursuant to Section 4.1 above, the Warrantholder will be entitled to acquire, upon the
terms applicable to such Rights Offering, the aggregate number of Common Shares that the Warrantholder could have acquired if the
Warrantholder had held the number of Common Shares acquirable upon complete exercise of the Warrantholder’s Warrants then
held (without regard to any limitations on exercise hereof, including without limitation, the Beneficial Ownership Limitation)
immediately before the date on which a record is taken for the grant, issuance or sale of such Rights Offering, or, if no such
record is taken, the date as of which the record holders of Common Shares are to be determined for the grant, issue or sale of
such Rights Offering (provided, however, to the extent that the Warrantholder’s right to participate in any such Rights Offering
would result in the Warrantholder exceeding the Beneficial Ownership Limitation, then the Warrantholder shall not be entitled to
participate in such Rights Offering to such extent (or beneficial ownership of such Common Shares as a result of such Rights Offering
to such extent) and such Rights Offering, to such extent, shall be held in abeyance for the Warrantholder until such time, if ever,
as its right thereto would not result in the Warrantholder exceeding the Beneficial Ownership Limitation). Any

 

     

    	 	 -27-	 

    

  

	 	 	Common Shares owned by or held for
    the account of the Corporation or a Subsidiary shall be deemed not to be outstanding for the purpose of any such computation.
    If all the rights, options or warrants are not so issued or if all rights, options or warrants are not exercised prior to
    the expiration thereof, the number of Common Shares issuable upon exercise of a Warrant shall be readjusted to that number
    in effect immediately prior to the record date, and such number shall be further adjusted based upon the number of Common
    Shares (or Convertible Securities that are convertible into Common Shares) actually delivered upon the exercise of the rights,
    options or warrants, as the case may be, but subject to any other adjustment required hereunder by reason of any event arising
    after that record date; for the avoidance of doubt, the Corporation covenants and agrees that it shall not fix a record date
    for the issuance of rights, options or warrants to all or substantially all the holders of its outstanding Common Shares without
    obtaining both the approval of the Toronto Stock Exchange to permit the Warrantholders to fully participate in such issuance
    (as contemplated in this Section 4.1(b)) and the prior consent of a majority of the Registered Warrantholders given in accordance
    with Article 7.

 

		(c)	if and whenever at any time during the Adjustment Period the Corporation shall fix a record date
for the making of a distribution to all or substantially all the holders of its outstanding Common Shares of (i) securities
of any class, whether of the Corporation or any other trust (other than Common Shares), (ii) rights, options or warrants to subscribe
for or purchase Common Shares (or other securities convertible into or exchangeable for Common Shares), other than pursuant to
a Rights Offering; (iii) evidences of its indebtedness or (iv) any property or other assets then (any of those non-excluded events
being herein called a “Special Distribution”), then, in each such case, the Warrantholder shall be entitled
to participate in such Special Distribution to the same extent that the Warrantholder would have participated therein if the Warrantholder
had held the number of Common Shares acquirable upon complete exercise of the Warrantholder’s Warrants then held (without
regard to any limitations on exercise hereof, including without limitation, the Beneficial Ownership Limitation) immediately before
the date of which a record is taken for such Special Distribution, or, if no such record is taken, the date as of which the record
holders of Common Shares are to be determined for the participation in such Special Distribution (provided, however, to the extent
that the Warrantholder’s right to participate in any such Special Distribution would result in the Warrantholder exceeding
the Beneficial Ownership Limitation, then the Warrantholder shall not be entitled to participate in such Special Distribution to
such extent (or in the beneficial ownership of any Common Shares as a result of such Special Distribution to such extent) and the
portion of such Special Distribution shall be held in abeyance for the benefit of the Warrantholder until such time, if ever, as
its right thereto would not result in the Warrantholder exceeding the Beneficial Ownership Limitation). To the extent that a Warrantholder’s
Warrants have not been partially or completely exercised at the time of such Special

 

     

    	 	 -28-	 

    

  

		 	Distribution,
                                         such portion of the Special Distribution shall be held in abeyance for the benefit of
                                         the Warrantholder until the Warrantholder has exercised the Warrantholder’s Warrants
                                         as to such undistributed amount of the Special Distribution. Any Common Shares owned
                                         by or held for the account of the Corporation or a Subsidiary shall be deemed not to
                                         be outstanding for the purpose of any such computation. To the extent that the distribution
                                         of shares, rights, options, warrants, evidences of indebtedness or assets is not so made
                                         or to the extent that any rights, options or warrants so distributed are not exercised,
                                         the number of Common Shares issuable upon exercise of a Warrant shall be readjusted to
                                         the number that would then be in effect based upon shares, rights, options, warrants,
                                         evidences of indebtedness or assets actually distributed or based upon the number of
                                         Common Shares or Convertible Securities actually delivered upon the exercise of the rights,
                                         options or warrants, as the case may be, but subject to any other adjustment required
                                         hereunder by reason of any event arising after the record date. To the extent that the
                                         Warrantholder’s Warrants have not been partially or completely exercised at the
                                         time of such Special Distribution, such portion of the Special Distribution shall be
                                         held in abeyance for the benefit of the Warrantholder until, and only if, the Warrantholder
                                         has exercised such Warrantholder’s Warrants;

 

		(d)	if and whenever at any time during the Adjustment Period, there is a reclassification of the Common
Shares or a capital reorganization of the Corporation other than as described in Section 4.1(a) or a consolidation, amalgamation,
arrangement or merger of the Corporation with or into any other body corporate, trust, partnership or other entity, or a sale or
conveyance of the property and assets of the Corporation as an entirety or substantially as an entirety to any other body corporate,
trust, partnership or other entity, any Registered Warrantholder who has not exercised its right of acquisition prior to the effective
date of such reclassification, capital reorganization, consolidation, amalgamation, arrangement or merger, sale or conveyance,
upon the exercise of such right thereafter, shall be entitled to receive upon payment of the Exercise Price and shall accept, in
lieu of the number of Common Shares that prior to such effective date the Registered Warrantholder would have been entitled to
receive, the number of shares or other securities or property of the Corporation or of the body corporate, trust, partnership or
other entity resulting from such merger, amalgamation or consolidation, or to which such sale or conveyance may be made, as the
case may be, that such Registered Warrantholder would have been entitled to receive on such reclassification, capital reorganization,
consolidation, amalgamation, arrangement or merger, sale or conveyance, if, on the effective date thereof, as the case may be,
the Registered Warrantholder had been the registered holder of the number of Common Shares to which prior to such effective date
it was entitled to acquire upon the exercise of the Warrants. If determined appropriate by the Warrant Agent, relying on advice
of Counsel, to give effect to or to evidence the provisions of this Section 4.1(d), the Corporation, its successor, or such
purchasing body corporate, partnership, 

 

     

    	 	 -29-	 

    

  

		 	trust
                                         or other entity, as the case may be, shall, prior to or contemporaneously with any such
                                         reclassification, capital reorganization, consolidation, amalgamation, arrangement, merger,
                                         sale or conveyance, enter into an indenture which shall provide, to the extent possible,
                                         for the application of the provisions set forth in this Indenture with respect to the
                                         rights and interests thereafter of the Registered Warrantholders to the end that the
                                         provisions set forth in this Indenture shall thereafter correspondingly be made applicable,
                                         as nearly as may reasonably be, with respect to any shares, other securities or property
                                         to which a Registered Warrantholder is entitled on the exercise of its acquisition rights
                                         thereafter. Any indenture entered into between the Corporation and the Warrant Agent
                                         pursuant to the provisions of this Section 4.1(d) shall be a supplemental indenture
                                         entered into pursuant to the provisions of Article 8 hereof. Any indenture entered into
                                         between the Corporation, any successor to the Corporation or such purchasing body corporate,
                                         partnership, trust or other entity and the Warrant Agent shall provide for adjustments
                                         which shall be as nearly equivalent as may be practicable to the adjustments provided
                                         in this Section 4.1 and which shall apply to successive reclassifications, capital
                                         reorganizations, amalgamations, consolidations, mergers, sales or conveyances;

 

		(e)	in any case in which this Section 4.1 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 Registered Warrantholder of any Warrant exercised after the record date and prior to the completion of such event
the additional Common Shares issuable by reason of the adjustment required by such event before giving effect to such adjustment;
provided, however, that the Corporation shall deliver to such Registered Warrantholder an appropriate instrument evidencing such
Registered Warrantholder's right to receive such additional Common Shares upon the occurrence of the event requiring such adjustment
and the right to receive any distributions made on such additional Common Shares declared in favour of holders of record of Common
Shares on and after the relevant date of exercise or such later date as such Registered Warrantholder would, but for the provisions
of this Section 4.1(e), have become the holder of record of such additional Common Shares pursuant to Section 4.1;

 

		(f)	in any case in which Section 4.1(a)(iii) or 4.1(c) require that an adjustment be made to the
Exercise Price no such adjustment shall be made if the Registered Warrantholders of the outstanding Warrants receive, subject to
the approval of the Toronto Stock Exchange and NYSE MKT, if required, the rights or warrants referred to in Section 4.1(a)(iii)
and Section 4.1(c) in such kind and number as they would have received if they had been holders of Common Shares on the applicable
record date or effective date, as the case may be, by virtue of their outstanding Warrant having then been exercised into Common
Shares at the Exercise Price in effect on the applicable record date or effective date, as the case may be;

 

     

    	 	 -30-	 

    

  

		(g)	the adjustments provided for in this Section 4.1 are cumulative, and shall, in the case of
adjustments to the Exercise Price be computed to the nearest whole cent and shall apply to successive subdivisions, re-divisions,
reductions, combinations, consolidations, distributions, issues or other events resulting in any adjustment under the provisions
of this Section 4.1, provided that, notwithstanding any other provision of this Section, no adjustment of the Exercise Price
shall be required unless such adjustment would require an increase or decrease of at least 1% in the Exercise Price then in effect;
provided, however, that any adjustments which by reason of this Section 4.1(g) are not required to be made shall be carried
forward and taken into account in any subsequent adjustment; and

 

		(h)	after any adjustment pursuant to this Section 4.1, the term "Common Shares"
where used in this Indenture shall be interpreted to mean securities of any class or classes which, as a result of such adjustment
and all prior adjustments pursuant to this Section 4.1, the Registered Warrantholder is entitled to receive upon the exercise
of his Warrant, and the number of Common Shares indicated by any exercise made pursuant to a Warrant shall be interpreted to mean
the number of Common Shares or other property or securities a Registered Warrantholder is entitled to receive, as a result of such
adjustment and all prior adjustments pursuant to this Section 4.1, upon the full exercise of a Warrant.

 

		Section 4.2	Entitlement to Common Shares on
                                         Exercise of Warrant.

 

All Common Shares or shares
of any class or other securities, which a Registered Warrantholder is at the time in question entitled to receive on the exercise
of its Warrant, whether or not as a result of adjustments made pursuant to this Article 4, shall, for the purposes of the interpretation
of this Indenture, be deemed to be Common Shares which such Registered Warrantholder is entitled to acquire pursuant to such Warrant.

 

		Section 4.3	No Adjustment for Certain Transactions.

 

Notwithstanding anything
in this Article 4, no adjustment shall be made in the acquisition rights attached to the Warrants if the issue of Common Shares
is being made pursuant to this Indenture or in connection with (a) any share incentive plan or restricted share plan or share purchase
plan in force from time to time for directors, officers, employees, consultants or other service providers of the Corporation;
or (b) the satisfaction of existing instruments issued at the date hereof.

 

		Section 4.4	Determination by Auditors.

 

In the event of any question
arising with respect to the adjustments provided for in this Article 4 such question shall be conclusively determined by an independent
firm of chartered accountants other than the Auditors, who shall have access to all necessary records of the Corporation, and such
determination shall be binding upon the Corporation, the Warrant Agent, all holders and all other persons interested therein.

 

     

    	 	 -31-	 

    

  

		Section 4.5	Proceedings Prior to any Action Requiring Adjustment.

 

As a condition precedent
to the taking of any action which would require an adjustment in any of the acquisition rights pursuant to any of the Warrants,
including the number of Common Shares which are to be received upon the exercise thereof, the Corporation shall take any action
which may, in the opinion of Counsel, be necessary in order that the Corporation has unissued and reserved in its authorized capital
and may validly and legally issue as fully paid and non-assessable all the Common Shares which the holders of such Warrants are
entitled to receive on the full exercise thereof in accordance with the provisions hereof.

 

		Section 4.6	Certificate of Adjustment.

 

The Corporation shall from
time to time immediately after the occurrence of any event which requires an adjustment or readjustment as provided in Article
4, deliver a certificate of the Corporation to the Warrant Agent specifying the nature of the event requiring the same and the
amount of the adjustment or readjustment necessitated thereby and setting forth in reasonable detail the method of calculation
and the facts upon which such calculation is based, which certificate shall be supported by a certificate of the Corporation's
Auditors verifying such calculation. The Warrant Agent shall rely, and shall be protected in so doing, upon the certificate of
the Corporation or of the Corporation's Auditor and any other document filed by the Corporation pursuant to this Article 4 for
all purposes. The Corporation shall file such certificate of adjustment on a Form 6-K with the SEC on the same date it is submitted
to the Warrant Agent.

 

		Section 4.7	Notice of Special Matters.

 

The Corporation covenants
with the Warrant Agent that, so long as any Warrant remains outstanding, it will give notice to the Warrant Agent and to the Registered
Warrantholders of its intention to fix a record date that is prior to the Expiry Date for any matter for which an adjustment may
be required pursuant to Section 4.1. Such notice shall specify the particulars of such event and the record date for such
event, provided that the Corporation shall only be required to specify in the notice such particulars of the event as shall have
been fixed and determined on the date on which the notice is given. The notice shall be given in each case not less than 14 days
prior to such applicable record date. If notice has been given and the adjustment is not then determinable, the Corporation shall
promptly, after the adjustment is determinable, file with the Warrant Agent a computation of the adjustment and give notice to
the Registered Warrantholders of such adjustment computation.

 

		Section 4.8	No Action after Notice.

 

The Corporation covenants
with the Warrant Agent that it will not close its transfer books or take any other corporate action which might deprive the Registered
Warrantholder of the opportunity to exercise its right of acquisition pursuant thereto during the period of 14 days after the giving
of the certificate or notices set forth in Section 4.6 and Section 4.7.

 

     

    	 	 -32-	 

    

  

		Section 4.9	Other Action.

 

If the Corporation, after
the date hereof, shall take any action affecting the Common Shares other than action described in Section 4.1, which in the
reasonable opinion of the directors of the Corporation would materially affect the rights of Registered Warrantholders, the Exercise
Price and/or the Exchange Rate, the number of Common Shares which may be acquired upon exercise of the Warrants shall be adjusted
in such manner and at such time, by action of the directors, acting reasonably, in their sole discretion as they may determine
to be equitable to the Registered Warrantholders in the circumstances, provided that no such adjustment will be made unless any
requisite prior approval of any stock exchange on which the Common Shares are listed for trading has been obtained.

 

		Section 4.10	Protection of Warrant Agent.

 

The Warrant Agent shall
not:

 

		(a)	at any time be under any duty or responsibility to any Registered Warrantholder to determine whether
any facts exist which may require any adjustment contemplated by Section 4.1, or with respect to the nature or extent of any
such adjustment when made, or with respect to the method employed in making the same;

 

		(b)	be accountable with respect to the validity or value (or the kind or amount) of any Common Shares
or of any other securities or property which may at any time be issued or delivered upon the exercise of the rights attaching to
any Warrant;

 

		(c)	be responsible for any failure of the Corporation to issue, transfer or deliver Common Shares or
certificates for the same upon the surrender of any Warrants for the purpose of the exercise of such rights or to comply with any
of the covenants contained in this Article 4; and

 

		(d)	incur any liability or be in any way responsible for the consequences of any breach on the part
of the Corporation of any of the representations, warranties or covenants herein contained or of any acts of the directors, officers,
employees, agents or servants of the Corporation.

 

		Section 4.11	Participation by Warrantholder.

 

No adjustments shall be
made pursuant to this Article 4 if the Registered Warrantholders are entitled to participate in any event described in this Article
4 on the same terms, mutatis mutandis, as if the Registered Warrantholders had exercised their Warrants prior to, or on
the effective date or record date of, such event.

 

 

     

    	 	 -33-	 

    

 

Article 5

 

RIGHTS
OF THE CORPORATION AND COVENANTS

 

		Section
                           5.1	Optional Purchases
                                         by the Corporation.

 

Subject
to compliance with Applicable Securities Laws and approval of applicable Regulatory Authorities, the Corporation may from time
to time purchase by private contract or otherwise any of the Warrants. Any such purchase shall be made at the lowest price or
prices at which, in the opinion of the directors, such Warrants are then obtainable, plus reasonable costs of purchase, and may
be made in such manner, from such persons and on such other terms as the Corporation, in its sole discretion, may determine. In
the case of Certificated Warrants, Warrant Certificates representing the Warrants purchased pursuant to this Section 5.1
shall forthwith be delivered to and cancelled by the Warrant Agent. In the case of Uncertificated Warrants, the Warrants purchased
pursuant to this Section 5.1 shall be reflected accordingly in accordance with procedures prescribed by the Depository under
the book entry registration system. No Warrants shall be issued in replacement thereof.

 

		Section
                           5.2	General
                                         Covenants.

 

The
Corporation covenants with the Warrant Agent for the benefit of the Warrant Agent and the Warrantholders that so long as any Warrants
remain outstanding:

 

		(a)	it will reserve and keep available a sufficient number of Common Shares for the purpose of enabling
it to satisfy its obligations to issue Common Shares upon the exercise of the Warrants;

 

		(b)	it will cause the Common Shares from time to time acquired pursuant to the exercise of the Warrants
to be duly issued and delivered in accordance with the Warrants and the terms hereof;

 

		(c)	all Common Shares which shall be issued upon exercise of the right to acquire provided for herein
will be fully paid and non-assessable;

 

		(d)	it will use reasonable commercial efforts to maintain its existence and carry on its business in
the ordinary course;

 

		(e)	it will use reasonable commercial efforts to ensure that all Common Shares outstanding or issuable
from time to time (including without limitation the Common Shares issuable on the exercise of the Warrants) (or, if the Corporation
enters into an amalgamation, arrangement or merger of the Corporation with or into any other corporation or other entity which
effects a change of the Common Shares into other shares or an exchange of the Common Shares for other securities (including securities
of another entity), such securities) continue to be or are listed and posted for trading on the Toronto Stock Exchange (or such
other Canadian stock exchange acceptable to the Corporation) and the NYSE MKT;

 

		(f)	it will make all requisite filings under applicable Canadian and US securities legislation including
those necessary to remain a reporting issuer not in

 

     

    	 	 -34-	 

    

  

			default
                                         in each of the provinces and other jurisdictions where it is or becomes a reporting issuer;

 

		(g)	generally,
                                         it will well and truly perform and carry out all of the acts or things to be done by
                                         it as provided in this Indenture;

 

		(h)	if at any time no Registration Statement is effective under the U.S. Securities Act, or if the
prospectus contained therein is not available, it will give notice to the Warrant Agent forthwith; and

 

		(i)	it
will use reasonable commercial efforts to maintain the Registration Statement continuously
effective under the U.S. Securities Act, and ensure that the prospectus contained therein is available, until the Expiry Time or
exercise of all Warrants (provided, however, that nothing shall prevent the Corporation's amalgamation, arrangement, merger or
sale, including any take-over bid, and any associated delisting or deregistration or ceasing to be a reporting issuer, provided
that, so long as the Warrants are still outstanding and represent a right to acquire securities of the acquiring company, the acquiring
company shall assume the Corporation's obligations under the Warrant Indenture).

 

		Section 5.3	Warrant Agent's Remuneration and Expenses.

 

The Corporation covenants
that it will pay to the Warrant Agent from time to time reasonable remuneration for its services hereunder and will pay or reimburse
the Warrant Agent upon its request for all reasonable expenses, disbursements and advances incurred or made by the Warrant Agent
in the administration or execution of the trusts hereby created (including the reasonable compensation and the disbursements of
its Counsel and all other advisers and assistants not regularly in its employ) both before any default hereunder and thereafter
until all duties of the Warrant Agent hereunder shall be finally and fully performed. Any amount owing hereunder and remaining
unpaid after 30 days from the invoice date will bear interest at the then current rate charged by the Warrant Agent against unpaid
invoices and shall be payable upon demand. This Section shall survive the resignation of the Warrant Agent and/or the termination
of this Indenture.

 

		Section 5.4	Performance of Covenants by Warrant Agent.

 

If the Corporation shall
fail to perform any of its covenants contained in this Indenture, the Warrant Agent may notify the Registered Warrantholders of
such failure on the part of the Corporation or may itself perform any of the covenants capable of being performed by it but, subject
to Section 9.2, shall be under no obligation to perform said covenants or to notify the Registered Warrantholders of such performance
by it. All sums expended or advanced by the Warrant Agent in so doing shall be repayable as provided in Section 5.3. No such
performance, expenditure or advance by the Warrant Agent shall relieve the Corporation of any default hereunder or of its continuing
obligations under the covenants herein contained.

 

     

    	 	 -35-	 

    

  

		Section 5.5	Enforceability of Warrants.

 

The Corporation covenants
and agrees that it is duly authorized to create and issue the Warrants to be issued hereunder and that the Warrants, when issued
and Authenticated as herein provided, will be valid and enforceable against the Corporation in accordance with the provisions hereof
and the terms hereof and that, subject to the provisions of this Indenture, the Corporation will cause the Common Shares from time
to time acquired upon exercise of Warrants issued under this Indenture to be duly issued and delivered in accordance with the terms
of this Indenture.

 

Article 6

 

ENFORCEMENT

 

		Section 6.1	Suits by Registered Warrantholders.

 

All or any of the rights
conferred upon any Registered Warrantholder by any of the terms of this Indenture may be enforced by the Registered Warrantholder
by appropriate proceedings but without prejudice to the right which is hereby conferred upon the Warrant Agent to proceed in its
own name to enforce each and all of the provisions herein contained for the benefit of the Registered Warrantholders.

 

		Section 6.2	Suits by the Corporation.

 

The Corporation shall have
the right to enforce full payment of the Exercise Price of all Common Shares issued by the Warrant Agent to a Registered Warrantholder
hereunder and shall be entitled to demand such payment from the Registered Warrantholder or alternatively to instruct the Warrant
Agent to cancel the share certificates and amend the securities register accordingly.

 

		Section 6.3	Immunity of Shareholders, etc.

 

The Warrant Agent and the
Warrantholders hereby waive and release any right, cause of action or remedy now or hereafter existing in any jurisdiction against
any incorporator or any past, present or future shareholder, trustee, employee or agent of the Corporation or any successor Corporation
on any covenant, agreement, representation or warranty by the Corporation herein.

 

		Section 6.4	Waiver of Default.

 

Upon the happening of any
default hereunder:

 

		(a)	the Registered Warrantholders of not less than 66 2/3% of the Warrants then outstanding shall have
power (in addition to the powers exercisable by Extraordinary Resolution) by requisition in writing to instruct the Warrant Agent
to waive any default hereunder and the Warrant Agent shall thereupon waive the default upon such terms and conditions as shall
be prescribed in such requisition; or

 

		(b)	the Warrant Agent shall have power to waive any default hereunder upon such terms and conditions
as the Warrant Agent may deem advisable, on the advice of Counsel, if, in the Warrant Agent's opinion, based on the advice of

 

     

    	 	 -36-	 

    

  

			Counsel,
                                         the same shall have been cured or adequate provision made therefor;

 

provided
that no delay or omission of the Warrant Agent or of the Registered Warrantholders to exercise any right or power accruing upon
any default shall impair any such right or power or shall be construed to be a waiver of any such default or acquiescence therein
and provided further that no act or omission either of the Warrant Agent or of the Registered Warrantholders in the premises shall
extend to or be taken in any manner whatsoever to affect any subsequent default hereunder of the rights resulting therefrom.

 

Article 7

 

MEETINGS
OF REGISTERED WARRANTHOLDERS

 

		Section 7.1	Right to Convene Meetings.

 

The Warrant Agent may at
any time and from time to time, and shall on receipt of a written request of the Corporation or of a Warrantholders' Request and
upon being indemnified and funded to its reasonable satisfaction by the Corporation or by the Registered Warrantholders signing
such Warrantholders' Request against the costs which may be incurred in connection with the calling and holding of such meeting,
convene a meeting of the Registered Warrantholders. If the Warrant Agent fails to so call a meeting within seven days after receipt
of such written request of the Corporation or such Warrantholders' Request and the indemnity and funding given as aforesaid, the
Corporation or such Registered Warrantholders, as the case may be, may convene such meeting. Every such meeting shall be held in
the City of Vancouver, British Columbia or at such other place as may be approved or determined by the Warrant Agent.

 

		Section 7.2	Notice.

 

At least 21 days' prior
written notice of any meeting of Registered Warrantholders shall be given to the Registered Warrantholders in the manner provided
for in Section 10.2 and a copy of such notice shall be sent by mail to the Warrant Agent (unless the meeting has been called by
the Warrant Agent) and to the Corporation (unless the meeting has been called by the Corporation). Such notice shall state the
time when and the place where the meeting is to be held, shall state briefly the general nature of the business to be transacted
thereat and shall contain such information as is reasonably necessary to enable the Registered Warrantholders to make a reasoned
decision on the matter, but it shall not be necessary for any such notice to set out the terms of any resolution to be proposed
or any of the provisions of this Section 7.2.

 

		Section 7.3	Chairman.

 

An individual (who need
not be a Registered Warrantholder) designated in writing by the Warrant Agent shall be chairman of the meeting and if no individual
is so designated, or if the individual so designated is not present within fifteen minutes from the time fixed for the holding
of the meeting, the Registered Warrantholders present in person or by proxy shall choose an individual present to be chairman.

 

     

    	 	 -37-	 

    

  

		Section
                           7.4	Quorum.

 

Subject
to the provisions of Section 7.11, at any meeting of the Registered Warrantholders a quorum shall consist of Registered Warrantholder(s)
present in person or by proxy and entitled to purchase at least 10% of the aggregate number of Common Shares which could be acquired
pursuant to all the then-outstanding Warrants. If a quorum of the Registered Warrantholders shall not be present within thirty
minutes from the time fixed for holding any meeting, the meeting, if summoned by Registered Warrantholders or on a Warrantholders'
Request, shall be dissolved; but in any other case the meeting shall be adjourned to the same day in the next week (unless such
day is not a Business Day, in which case it shall be adjourned to the next following Business Day) at the same time and place
and no notice of the adjournment need be given. Any business may be brought before or dealt with at an adjourned meeting which
might have been dealt with at the original meeting in accordance with the notice calling the same. No business shall be transacted
at any meeting unless a quorum be present at the commencement of business. At the adjourned meeting the Registered Warrantholders
present in person or by proxy shall form a quorum and may transact the business for which the meeting was originally convened,
notwithstanding that they may not be entitled to acquire at least 10% of the aggregate number of Common Shares which may be acquired
pursuant to all then outstanding Warrants.

 

		Section 7.5	Power to Adjourn.

 

The chairman of any meeting
at which a quorum of the Registered Warrantholders is present may adjourn any such meeting, and no notice of such adjournment need
be given except such notice, if any, as the meeting may prescribe.

 

		Section 7.6	Show of Hands.

 

Every question submitted
to a meeting shall be decided in the first place by a majority of the votes given on a show of hands except that votes on an Extraordinary
Resolution shall be given in the manner hereinafter provided. At any such meeting, unless a poll is duly demanded as herein provided,
a declaration by the chairman that a resolution has been carried or carried unanimously or by a particular majority or lost or
not carried by a particular majority shall be conclusive evidence of the fact.

 

		Section 7.7	Poll and Voting.

 

		(1)	On every Extraordinary Resolution, and on any other question submitted to a meeting and after a
vote by show of hands when demanded by the chairman or by one or more of the Registered Warrantholders acting in person or by proxy
and entitled to acquire in the aggregate at least 5% of the aggregate number of Common Shares which could be acquired pursuant
to all the Warrants then outstanding, a poll shall be taken in such manner as the chairman shall direct. Questions other than those
required to be determined by Extraordinary Resolution shall be decided by a majority of the votes cast on the poll.

 

		(2)	On a show of hands, every person who is present and entitled to vote, whether as a Registered Warrantholder
or as proxy for one or more absent Registered Warrantholders, or both, shall have one vote. On a poll, each Registered

 

 

 

     

    	 	 -38-	 

    

  

			Warrantholder
                                         present in person or represented by a proxy duly appointed by instrument in writing shall
                                         be entitled to one vote in respect of each Warrant then held or represented by it. A
                                         proxy need not be a Registered Warrantholder. The chairman of any meeting shall be entitled,
                                         both on a show of hands and on a poll, to vote in respect of the Warrants, if any, held
                                         or represented by the chairman.

 

		Section
                           7.8	Regulations.

 

		(1)	The
                                         Warrant Agent, or the Corporation with the approval of the Warrant Agent, may from time
                                         to time make and from time to time vary such regulations as it shall think fit for:

 

		(a)	the
                                         setting of the record date for a meeting for the purpose of determining Registered Warrantholders
                                         entitled to receive notice of and to vote at the meeting;

 

		(b)	the issue of voting certificates by any bank, trust company or other depository satisfactory to
the Warrant Agent stating that the Warrant Certificates specified therein have been deposited with it by a named person and will
remain on deposit until after the meeting, which voting certificate shall entitle the persons named therein to be present and vote
at any such meeting and at any adjournment thereof or to appoint a proxy or proxies to represent them and vote for them at any
such meeting and at any adjournment thereof in the same manner and with the same effect as though the persons so named in such
voting certificates were the actual bearers of the Warrant Certificates specified therein;

 

		(c)	the deposit of voting certificates and instruments appointing proxies at such place and time as
the Warrant Agent, the Corporation or the Registered Warrantholders convening the meeting, as the case may be, may in the notice
convening the meeting direct;

 

		(d)	the deposit of voting certificates and instruments appointing proxies at some approved place or
places other than the place at which the meeting is to be held and enabling particulars of such instruments appointing proxies
to be mailed or telecopied before the meeting to the Corporation or to the Warrant Agent at the place where the same is to be held
and for the voting of proxies so deposited as though the instruments themselves were produced at the meeting;

 

		(e)	the form of the instrument of proxy; and

 

		(f)	generally for the calling of meetings of Registered Warrantholders and the conduct of business
thereat.

 

		(2)	Any regulations so made shall be binding and effective and the votes given in accordance therewith
shall be valid and shall be counted. Save as such regulations may provide, the only persons who shall be recognized at any meeting
as a Registered Warrantholder, or be entitled to vote or be present at the meeting in

 

     

    	 	 -39-	 

    

  

	 	 	respect thereof (subject to Section
    7.9), shall be Registered Warrantholders or proxies of Registered Warrantholders.

  

		Section
                           7.9	Corporation
                                         and Warrant Agent May be Represented.

 

The
Corporation and the Warrant Agent, by their respective directors, officers agents, and employees and the Counsel for the Corporation
and for the Warrant Agent may attend any meeting of the Registered Warrantholders.

 

		Section
                           7.10	Powers
                                         Exercisable by Extraordinary Resolution.

 

In
addition to all other powers conferred upon them by any other provisions of this Indenture or by law, the Registered Warrantholders
at a meeting shall, subject to the provisions of Section 7.11, have the power exercisable from time to time by Extraordinary
Resolution:

 

		(a)	to agree to any modification, abrogation, alteration, compromise or arrangement of the rights of
Registered Warrantholders or the Warrant Agent in its capacity as warrant agent hereunder (subject to the Warrant Agent's prior
consent, acting reasonably) or on behalf of the Registered Warrantholders against the Corporation whether such rights arise under
this Indenture or otherwise;

 

		(b)	to amend, alter or repeal any Extraordinary Resolution previously passed or sanctioned by the Registered
Warrantholders;

 

		(c)	to direct or to authorize the Warrant Agent, subject to Section 9.2(2) hereof, to enforce any of
the covenants on the part of the Corporation contained in this Indenture or to enforce any of the rights of the Registered Warrantholders
in any manner specified in such Extraordinary Resolution or to refrain from enforcing any such covenant or right;

 

		(d)	to waive, and to direct the Warrant Agent to waive, any default on the part of the Corporation
in complying with any provisions of this Indenture either unconditionally or upon any conditions specified in such Extraordinary
Resolution;

 

		(e)	to restrain any Registered Warrantholder from taking or instituting any suit, action or proceeding
against the Corporation for the enforcement of any of the covenants on the part of the Corporation in this Indenture or to enforce
any of the rights of the Registered Warrantholders;

 

		(f)	to direct any Registered Warrantholder who, as such, has brought any suit, action or proceeding
to stay or to discontinue or otherwise to deal with the same upon payment of the costs, charges and expenses reasonably and properly
incurred by such Registered Warrantholder in connection therewith;

 

 

 

     

    	 	 -40-	 

    

  

		(g)	to
                                         assent to any change in or omission from the provisions contained in this Indenture or
                                         any ancillary or supplemental instrument which may be agreed to by the Corporation, and
                                         to authorize the Warrant Agent to concur in and execute any ancillary or supplemental
                                         indenture embodying the change or omission;

 

		(h)	with
                                         the consent of the Corporation, such consent not to be unreasonably withheld, to remove
                                         the Warrant Agent or its successor in office and to appoint a new warrant agent or warrant
                                         agents to take the place of the Warrant Agent so removed; and

 

		(i)	to
                                         assent to any compromise or arrangement with any creditor or creditors or any class or
                                         classes of creditors, whether secured or otherwise, and with holders of any shares or
                                         other securities of the Corporation.

 

		Section 7.11	Meaning of Extraordinary Resolution.

 

		(1)	The expression "Extraordinary Resolution" when used in this Indenture means, subject
as hereinafter provided in this Section 7.11 and in Section 7.14, a resolution proposed at a meeting of Registered Warrantholders
duly convened for that purpose and held in accordance with the provisions of this Article 7 at which there are present in person
or by proxy Registered Warrantholders holding Warrants to acquire at least 20% of the aggregate number of Common Shares that could
be acquired and passed by the affirmative votes of Registered Warrantholders holding Warrants to acquire not less than 66 2/3%
of the aggregate number of Common Shares that could be acquired at the meeting and voted on the poll upon such resolution.

 

		(2)	If, at the meeting at which an Extraordinary Resolution is to be considered, Registered Warrantholders
holding Warrants to acquire at least 20% of the aggregate number of Common Shares that could be acquired are not present in person
or by proxy within 30 minutes after the time appointed for the meeting, then the meeting, if convened by Registered Warrantholders
or on a Warrantholders' Request, shall be dissolved; but in any other case it shall stand adjourned to such day, being not less
than 15 or more than 60 days later, and to such place and time as may be appointed by the chairman. Not less than 14 days' prior
notice shall be given of the time and place of such adjourned meeting in the manner provided for in Section 10.2. Such notice shall
state that at the adjourned meeting the Registered Warrantholders present in person or by proxy shall form a quorum but it shall
not be necessary to set forth the purposes for which the meeting was originally called or any other particulars. At the adjourned
meeting the Registered Warrantholders present in person or by proxy shall form a quorum and may transact the business for which
the meeting was originally convened and a resolution proposed at such adjourned meeting and passed by the requisite vote as provided
in Section 7.11(1) shall be an Extraordinary Resolution within the meaning of this Indenture notwithstanding that Registered Warrantholders
entitled to acquire at least 20% of the aggregate number of Common Shares which may be acquired pursuant to all the then outstanding
Warrants are not present in person or by proxy at such adjourned meeting.

  

     

    	 	 -41-	 

    

  

		(3)	Subject
                                         to Section 7.14, votes on an Extraordinary Resolution shall always be given on a poll
                                         and no demand for a poll on an Extraordinary Resolution shall be necessary.

 

		Section
                           7.12	Powers
                                         Cumulative.

 

Any
one or more of the powers or any combination of the powers in this Indenture stated to be exercisable by the Registered Warrantholders
by Extraordinary Resolution or otherwise may be exercised from time to time and the exercise of any one or more of such powers
or any combination of powers from time to time shall not be deemed to exhaust the right of the Registered Warrantholders to exercise
such power or powers or combination of powers then or thereafter from time to time.

 

		Section 7.13	Minutes.

 

Minutes of all resolutions
and proceedings at every meeting of Registered Warrantholders shall be made and duly entered in books to be provided from time
to time for that purpose by the Warrant Agent at the expense of the Corporation, and any such minutes as aforesaid, if signed by
the chairman or the secretary of the meeting at which such resolutions were passed or proceedings had shall be prima facie evidence
of the matters therein stated and, until the contrary is proved, every such meeting in respect of the proceedings of which minutes
shall have been made shall be deemed to have been duly convened and held, and all resolutions passed thereat or proceedings taken
shall be deemed to have been duly passed and taken.

 

		Section 7.14	Instruments in Writing.

 

All actions which may be
taken and all powers that may be exercised by the Registered Warrantholders at a meeting held as provided in this Article 7 may
also be taken and exercised by Registered Warrantholders holding Warrants to acquire at least 66 2/3% of the aggregate number of
Common Shares that could be acquired by an instrument in writing signed in one or more counterparts by such Registered Warrantholders
in person or by attorney duly appointed in writing, and the expression "Extraordinary Resolution" when used in
this Indenture shall include an instrument so signed.

 

		Section 7.15	Binding Effect of Resolutions.

 

Every resolution and every
Extraordinary Resolution passed in accordance with the provisions of this Article 7 at a meeting of Registered Warrantholders shall
be binding upon all the Warrantholders, whether present at or absent from such meeting, and every instrument in writing signed
by Registered Warrantholders in accordance with Section 7.14 shall be binding upon all the Warrantholders, whether signatories
thereto or not, and each and every Warrantholder and the Warrant Agent (subject to the provisions for indemnity herein contained)
shall be bound to give effect accordingly to every such resolution and instrument in writing.

 

		Section 7.16	Holdings by Corporation Disregarded.

 

In determining whether
Registered Warrantholders holding Warrants evidencing the entitlement to acquire the required number of Common Shares are present
at a meeting of Registered Warrantholders for the purpose of determining a quorum or have concurred

 

     

    	 	 -42-	 

    

  

in any consent, waiver, Extraordinary
Resolution, Warrantholders' Request or other action under this Indenture, Warrants owned legally or beneficially by the Corporation
shall be disregarded in accordance with the provisions of Section 10.7.

Article
8

 

SUPPLEMENTAL
INDENTURES

 

		Section 8.1	Provision for Supplemental Indentures for Certain Purposes.

 

From time to time, the
Corporation (when authorized by action of the directors) and the Warrant Agent may, subject to the provisions hereof and they shall,
when so directed in accordance with the provisions hereof, execute and deliver by their proper officers, indentures or instruments
supplemental hereto, which thereafter shall form part hereof, for any one or more or all of the following purposes:

 

		(a)	setting forth any adjustments resulting from the application of the provisions of Article 4;

 

		(b)	adding to the provisions hereof such additional covenants and enforcement provisions as, in the
opinion of Counsel, are necessary or advisable in the premises, provided that the same are not in the opinion of the Warrant Agent,
relying on the advice of Counsel, prejudicial to the interests of the Registered Warrantholders;

 

		(c)	giving effect to any Extraordinary Resolution passed as provided in 7.11;

 

		(d)	making such provisions not inconsistent with this Indenture as may be necessary or desirable with
respect to matters or questions arising hereunder, provided that such provisions are not, in the opinion of the Warrant Agent,
relying on the advice of Counsel, prejudicial to the interests of the Registered Warrantholders;

 

		(e)	adding to or altering the provisions hereof in respect of the transfer of Warrants, making provision
for the exchange of Warrants, and making any modification in the form of the Warrant Certificates which does not affect the substance
thereof;

 

		(f)	modifying any of the provisions of this Indenture, including relieving the Corporation from any
of the obligations, conditions or restrictions herein contained, provided that such modification or relief shall be or become operative
or effective only if, in the opinion of the Warrant Agent, relying on the advice of Counsel, such modification or relief in no
way prejudices any of the rights of the Registered Warrantholders or of the Warrant Agent, and provided further that the Warrant
Agent may in its sole discretion decline to enter into any such supplemental indenture which in its opinion may not afford adequate
protection to the Warrant Agent when the same shall become operative;

 

     

    	 	 -43-	 

    

  

		(g)	providing
                                         for the issuance of additional Warrants hereunder and any consequential amendments hereto
                                         as may be required by the Warrant Agent relying on the advice of counsel; and

 

		(h)	for any other purpose not inconsistent with the terms of this Indenture, including the correction
or rectification of any ambiguities, defective or inconsistent provisions, errors, mistakes or omissions herein, provided that
in the opinion of the Warrant Agent, relying on the advice of Counsel, the rights of the Warrant Agent and of the Registered Warrantholders
are in no way prejudiced thereby.

 

		Section 8.2	Successor Entities.

 

In the case of the consolidation,
amalgamation, arrangement, merger or transfer of the undertaking or assets of the Corporation as an entirety or substantially as
an entirety to or with another entity ("successor entity"), the successor entity resulting from such consolidation,
amalgamation, arrangement, merger or transfer (if not the Corporation) shall expressly assume, by supplemental indenture satisfactory
in form to the Warrant Agent and executed and delivered to the Warrant Agent, the due and punctual performance and observance of
each and every covenant and condition of this Indenture to be performed and observed by the Corporation.

 

Article
9

 

CONCERNING
THE WARRANT Agent

 

		Section 9.1	Trust Indenture Legislation.

 

		(1)	If and to the extent that any provision of this Indenture limits, qualifies or conflicts with a
mandatory requirement of Applicable Legislation, such mandatory requirement shall prevail.

 

		(2)	The Corporation and the Warrant Agent agree that each will, at all times in relation to this Indenture
and any action to be taken hereunder, observe and comply with and be entitled to the benefits of Applicable Legislation.

 

		Section 9.2	Rights and Duties of Warrant Agent.

 

		(1)	In the exercise of the rights and duties prescribed or conferred by the terms of this Indenture,
the Warrant Agent shall exercise that degree of care, diligence and skill that a reasonably prudent warrant agent would exercise
in comparable circumstances. No provision of this Indenture shall be construed to relieve the Warrant Agent from liability for
its own negligent action, wilful misconduct, bad faith or fraud under this Indenture.

 

		(2)	The obligation of the Warrant Agent to commence or continue any act, action or proceeding for the
purpose of enforcing any rights of the Warrant Agent or the Registered Warrantholders hereunder shall be conditional upon the Registered
Warrantholders furnishing, when required by notice by the Warrant Agent, sufficient funds to commence or to continue such act,
action or proceeding and an

 

     

    	 	 -44-	 

    

  

	 	 	indemnity reasonably satisfactory
    to the Warrant Agent to protect and to hold harmless the Warrant Agent and its officers, directors, employees and agents,
    against the costs, charges and expenses and liabilities to be incurred thereby and any loss and damage it may suffer by reason
    thereof. None of the provisions contained in this Indenture shall require the Warrant Agent to expend or to risk its own funds
    or otherwise to incur financial liability in the performance of any of its duties or in the exercise of any of its rights
    or powers unless indemnified and funded as aforesaid.

 

		(3)	The Warrant Agent may, before commencing or at any time during the continuance of any such act,
action or proceeding, require the Registered Warrantholders, at whose instance it is acting to deposit with the Warrant Agent the
Warrants Certificates held by them, for which Warrants the Warrant Agent shall issue receipts.

 

		(4)	Every provision of this Indenture that by its terms relieves the Warrant Agent of liability or
entitles it to rely upon any evidence submitted to it is subject to the provisions of Applicable Legislation.

 

		Section 9.3	Evidence, Experts and Advisers.

 

		(1)	In addition to the reports, certificates, opinions and other evidence required by this Indenture,
the Corporation shall furnish to the Warrant Agent such additional evidence of compliance with any provision hereof, and in such
form, as may be prescribed by Applicable Legislation or as the Warrant Agent may reasonably require by written notice to the Corporation.

 

		(2)	In the exercise of its rights and duties hereunder, the Warrant Agent may, if it is acting in good
faith, rely as to the truth of the statements and the accuracy of the opinions expressed in statutory declarations, opinions, reports,
written requests, consents, or orders of the Corporation, certificates of the Corporation or other evidence furnished to the Warrant
Agent pursuant to a request of the Warrant Agent, provided that such evidence complies with Applicable Legislation and that the
Warrant Agent complies with Applicable Legislation and that the Warrant Agent examines the same and determines that such evidence
complies with the applicable requirements of this Indenture.

 

		(3)	Whenever it is provided in this Indenture or under Applicable Legislation that the Corporation
shall deposit with the Warrant Agent resolutions, certificates, reports, opinions, requests, orders or other documents, it is intended
that the truth, accuracy and good faith on the effective date thereof and the facts and opinions stated in all such documents so
deposited shall, in each and every such case, be conditions precedent to the right of the Corporation to have the Warrant Agent
take the action to be based thereon.

 

		(4)	The Warrant Agent may employ or retain such Counsel, accountants, appraisers or other experts or
advisers as it may reasonably require for the purpose of discharging its duties hereunder and may pay reasonable remuneration for
all services so performed by any of them, without taxation of costs of any Counsel, and shall not be

 

     

    	 	 -45-	 

    

  

	 	 	responsible for any misconduct or
    negligence on the part of any such experts or advisers who have been appointed with due care by the Warrant Agent.

 

		(5)	The Warrant Agent may act and rely and shall be protected in acting and relying in good faith on
the opinion or advice of or information obtained from any Counsel, accountant, appraiser, engineer or other expert or adviser,
whether retained or employed by the Corporation or by the Warrant Agent, in relation to any matter arising in the administration
of the agency hereof.

 

		Section 9.4	Documents, Monies, etc. Held by Warrant Agent.

 

		(1)	Any monies, securities, documents of title or other instruments that
may at any time be held by the Warrant Agent may be placed in the deposit vaults of the Warrant Agent or of any Canadian chartered
bank listed in Schedule I of the Bank Act (Canada), or deposited for safekeeping with any such bank. Any monies held
pending the application or withdrawal thereof under any provisions of this Indenture, shall be held, invested and reinvested amount
in permitted investments as directed in writing by the Corporation. Permitted investments shall be treasury bills guaranteed by
the Government of Canada having a term to maturity not to exceed ninety (90) days, or term deposits or bankers' acceptances of
a Canadian chartered bank having a term to maturity not to exceed ninety (90) days, or such other investments that is in accordance
with the Warrant Agent's standard type of investments. All interest or other income received by the Warrant Agent in respect of
such deposits and investments shall belong to the Corporation. 

 

		(2)	Any written direction for the investment or release of funds received
shall be received by the Warrant Agent by 9:00 a.m. (Pacific time) on the Business Day on which such investment or release is to
be made, failing which such direction will be handled on a commercially reasonable efforts basis and may result in funds being
invested or released on the next Business Day. 

 

		(3)	The Warrant Agent shall have no responsibility or liability for any
diminution of any funds resulting from any investment made in accordance with this Indenture, including any losses on any investment
liquidated prior to maturity in order to make a payment required hereunder.

 

		(4)	In the event that the Warrant Agent does not receive a direction
or only a partial direction, the Warrant Agent may hold cash balances constituting part or all of such monies and may, but need
not, invest same in its deposit department, the deposit department of one of its affiliates, or the deposit department of a Canadian
chartered bank; but the Warrant Agent, its affiliates or a Canadian chartered bank shall not be liable to account for any profit
to any parties to this Indenture or to any other person or entity.

 

		Section 9.5	Actions by Warrant Agent to Protect Interest.

 

The Warrant Agent shall
have power to institute and to maintain such actions and proceedings as it may consider necessary or expedient to preserve, protect
or enforce its interests and the interests of the Registered Warrantholders.

  

     

    	 	 -46-	 

    

  

		Section
                           9.6	Warrant
                                         Agent Not Required to Give Security.

 

The
Warrant Agent shall not be required to give any bond or security in respect of the execution of the agency and powers of this
Indenture or otherwise in respect of the premises.

 

		Section 9.7	Protection of Warrant Agent.

 

By way of supplement to
the provisions of any law for the time being relating to the Warrant Agent it is expressly declared and agreed as follows:

 

		(a)	the Warrant Agent shall not be liable for or by reason of any statements of fact or recitals in
this Indenture or in the Warrant Certificates (except the representation contained in Section 9.9 or in the certificate of the
Warrant Agent on the Warrant Certificates) or be required to verify the same, but all such statements or recitals are and shall
be deemed to be made by the Corporation;

 

		(b)	nothing herein contained shall impose any obligation on the Warrant Agent to see to or to require
evidence of the registration or filing (or renewal thereof) of this Indenture or any instrument ancillary or supplemental hereto;

 

		(c)	the Warrant Agent shall not be bound to give notice to any person or persons of the execution hereof;

 

		(d)	the Warrant Agent shall not incur any liability or responsibility whatever or be in any way responsible
for the consequence of any breach on the part of the Corporation of any of its covenants herein contained or of any acts of any
directors, officers, employees, agents or servants of the Corporation;

 

		(e)	the Corporation hereby indemnifies and agrees to hold harmless the Warrant Agent, its affiliates,
their current and former officers, directors, employees , agents, successors and assigns from and against any and all liabilities,
losses, damages, penalties, claims, actions, suits, costs, expenses and disbursements, including legal fees and disbursements of
whatever kind and nature which may at any time be imposed on or incurred by or asserted against the Warrant Agent, whether groundless
or otherwise, arising from or out of any act, omission or error of the Warrant Agent, provided that the Corporation shall not be
required to indemnify the Warrant Agent in the event of the negligence or wilful misconduct of the Warrant Agent, and this provision
shall survive the resignation or removal of the Warrant Agent or the termination or discharge of this Indenture; and

 

		(f)	notwithstanding the foregoing or any other provision of this Indenture, any liability of the Warrant
Agent shall be limited, in the aggregate, to the amount of annual retainer fees paid by the Corporation to the Warrant Agent under
this Indenture in the twelve (12) months immediately prior to the Warrant Agent receiving the first notice of the claim. Notwithstanding
any other provision of this Indenture, and whether such losses or damages are

 

     

    	 	 -47-	 

    

  

	 	 	foreseeable or unforeseeable, the
    Warrant Agent shall not be liable under any circumstances whatsoever for any: (a) breach by any other party of securities
    law or other rule of any securities regulatory authority; (b) lost profits; or (c) special, indirect, incidental, consequential,
    exemplary, aggravated or punitive losses or damages.

 

		Section 9.8	Replacement of Warrant Agent; Successor by Merger.

 

		(1)	The Warrant Agent may resign its agency and be discharged
from all further duties and liabilities hereunder, subject to this Section 9.8, by giving to the Corporation not less than 60
days' prior notice in writing or such shorter prior notice as the Corporation may accept as sufficient. The Registered Warrantholders
by Extraordinary Resolution and with the consent of the Corporation (such consent not be unreasonably withheld) shall have power
at any time to remove the existing Warrant Agent and to appoint a new Warrant Agent. In the event of the Warrant Agent resigning
or being removed as aforesaid or being dissolved, becoming bankrupt, going into liquidation or otherwise becoming incapable of
acting hereunder, the Corporation shall forthwith appoint a new Warrant Agent unless a new Warrant Agent has already been appointed
by the Registered Warrantholders; failing such appointment by the Corporation, the retiring Warrant Agent or any Registered Warrantholder
may apply to a judge of the Supreme Court of the Province of British Columbia on such notice as such judge may direct, for the
appointment of a new Warrant Agent; but any new Warrant Agent so appointed by the Corporation or by the Court shall be subject
to removal as aforesaid by the Registered Warrantholders. Any new Warrant Agent appointed under any provision of this Section
9.8 shall be an entity authorized to carry on the business of a trust company in the Province of British Columbia and, if
required by the Applicable Legislation for any other provinces, in such other provinces. On any such appointment the new warrant
agent shall be vested with the same powers, rights, duties and responsibilities as if it had been originally named herein as Warrant
Agent hereunder.

 

		(2)	Upon the appointment of a successor Warrant Agent, the Corporation shall promptly notify the Registered
Warrantholders thereof in the manner provided for in Section 10.2.

 

		(3)	Any Warrant Certificates Authenticated but not delivered by a predecessor Warrant Agent may be
Authenticated by the successor Warrant Agent in the name of the predecessor or successor Warrant Agent.

 

		(4)	Any corporation in to which the Warrant Agent may be merged or consolidated or amalgamated, or
any corporation resulting therefrom to which the Warrant Agent shall be a party, or any corporation succeeding to substantially
the corporate trust business of the Warrant Agent shall be the successor to the Warrant Agent hereunder without any
further act on its part or any of the parties hereto, provided that such corporation would be eligible for appointment as successor
Warrant Agent under Section 9.8(1).

 

     

    	 	 -48-	 

    

  

		Section 9.9	Conflict of Interest.

 

		(1)	The Warrant Agent represents to the Corporation that at the time of execution and delivery of this
Indenture no material conflict of interest exists between its role as a Warrant Agent hereunder and its role in any other
capacity and agrees that in the event of a material conflict of interest arising hereafter it will, within 30 days after ascertaining
that it has such material conflict of interest, either eliminate the same or assign its agency hereunder to a successor Warrant
Agent approved by the Corporation and meeting the requirements set forth in Section 9.8(1). Notwithstanding the foregoing provisions
of this Section 9.9(1), if any such material conflict of interest exists or hereafter shall exist, the validity and enforceability
of this Indenture and the Warrant Certificate shall not be affected in any manner whatsoever by reason thereof.

 

		(2)	Subject to Section 9.9(1), the Warrant Agent, in its personal or any other capacity, may buy, lend
upon and deal in securities of the Corporation and generally may contract and enter into financial transactions with the Corporation
without being liable to account for any profit made thereby.

 

		Section 9.10	Acceptance of Agency.

 

The Warrant Agent hereby
accepts the agency in this Indenture declared and provided for and agrees to perform the same upon the terms and conditions herein
set forth.

 

		Section 9.11	Warrant Agent Not to be Appointed Receiver.

 

The Warrant Agent and any
person related to the Warrant Agent shall not be appointed a receiver, a receiver and manager or liquidator of all or any part
of the assets or undertaking of the Corporation.

 

		Section 9.12	Warrant Agent Not Required to Give Notice of Default.

 

The Warrant Agent shall
not be bound to give any notice or do or take any act, action or proceeding by virtue of the powers conferred on it hereby unless
and until it shall have been required so to do under the terms hereof; nor shall the Warrant Agent be required to take notice of
any default hereunder, unless and until notified in writing of such default, which notice shall distinctly specify the default
desired to be brought to the attention of the Warrant Agent and the Warrant Agent shall promptly provide the Warrantholders with
any such notice and in the absence of any such notice the Warrant Agent may for all purposes of this Indenture conclusively assume
that no default has been made in the observance or performance of any of the representations, warranties, covenants, agreements
or conditions contained herein. Any such notice shall in no way limit any discretion herein given to the Warrant Agent to determine
whether or not the Warrant Agent shall take action with respect to any default.

 

		Section 9.13	Anti-Money Laundering.

 

		(1)	Each party to this Agreement other than the Warrant Agent hereby represents to the Warrant Agent
that any account to be opened by, or interest to be held by the Warrant Agent in connection with this Agreement, for or to the
credit of such party, either (i) is not

 

     

    	 	 -49-	 

    

  

	 	 	intended to be used by or on behalf
    of any third party; or (ii) is intended to be used by or on behalf of a third party, in which case such party hereto agrees
    to complete and execute forthwith a declaration in the Warrant Agent's prescribed form as to the particulars of such third
    party.

 

		(2)	The Warrant Agent shall retain the right not to act and shall not be liable for refusing to act
if, due to a lack of information or for any other reason whatsoever, the Warrant Agent, in its sole judgment, determines that such
act might cause it to be in non-compliance with any applicable anti-money laundering or anti-terrorist legislation, regulation
or guideline. Further, should the Warrant Agent, in its sole judgment, determine at any time that its acting under this Indenture
has resulted in its being in non-compliance with any applicable anti-money laundering or anti-terrorist legislation, regulation
or guideline, then it shall have the right to resign on 10 days written notice to the other parties to this Indenture, provided
(i) that the Warrant Agent's written notice shall describe the circumstances of such non-compliance; (ii) that if such circumstances
are rectified to the Warrant Agent's satisfaction within such 10 day period, then such resignation shall not be effective.

 

		Section 9.14	Compliance with Privacy Code.

 

The Corporation acknowledges
that the Warrant Agent may, in the course of providing services hereunder, collect or receive financial and other personal information
about such parties and/or their representatives, as individuals, or about other individuals related to the subject matter hereof,
and use such information for the following purposes:

 

		(a)	to provide the services required under this Indenture and other services that may be requested
from time to time;

 

		(b)	to help the Warrant Agent manage its servicing relationships with such individuals;

 

		(c)	to meet the Warrant Agent's legal and regulatory requirements; and

 

		(d)	if Social Insurance Numbers are collected by the Warrant Agent, to perform tax reporting and to
assist in verification of an individual's identity for security purposes.

 

The Corporation acknowledges
and agrees that the Warrant Agent may receive, collect, use and disclose personal information provided to it or acquired by it
in the course of its acting as agent hereunder for the purposes described above and, generally, in the manner and on the terms
described in its Privacy Code, which the Warrant Agent shall make available on its website or upon request, including revisions
thereto. Further, the Corporation agrees that it shall not provide or cause to be provided to the Warrant Agent any personal information
relating to an individual who is not a party to this Indenture unless the Corporation has assured itself that such individual understands
and has consented to the aforementioned uses and disclosures.

 

     

    	 	 -50-	 

    

  

		Section
                           9.15	Securities
                                         Exchange Commission Certification.

 

The
Corporation confirms that it has either (i) a class of securities registered pursuant to Section 12 of the US Exchange Act or
(ii) a reporting obligation pursuant to Section 15(d) of the U.S. Exchange Act, and has provided the Warrant Agent with an Officers’
Certificate (in a form provided by the Warrant Agent certifying such reporting obligation and other information as requested by
the Warrant Agent. The Corporation covenants that in the event that any such registration or reporting obligation shall be terminated
by the Corporation in accordance with the Warrant Agent, the Corporation shall promptly notify the Warrant Agent of such termination
and such other information as the Warrant Agent may require at the time.  The Corporation acknowledges that the Warrant Agent
is relying upon the foregoing representation and covenants in order to meet certain SEC obligations with respect to those
clients who are filing with the SEC.

 

Article
10

GENERAL

 

		Section 10.1	Notice to the Corporation and the Warrant Agent.

 

		(1)	Unless herein otherwise expressly provided, any notice to be given hereunder to the Corporation
or the Warrant Agent shall be deemed to be validly given if delivered, sent by registered letter, postage prepaid or facsimile:

 

		(a)	If to the Corporation:

 

Vista Gold Corp.

Suite 5, 7961 Shaffer Parkway

Littleton, CO 80127, USA

 

Attention: Chief
Financial Officer

 

Facsimile: (720)
981-1186

		(b)	If to the Warrant Agent:

 

Computershare Trust Company of Canada

3rd Floor, 510 Burrard Street

Vancouver, BC, V6C 2B9

 

Attention: General
Manager, Corporate Trust

 

Facsimilie: (604)
661-9403

 

and any such notice delivered in
accordance with the foregoing shall be deemed to have been received and given on the date of delivery or, if mailed, on the fifth
Business Day following the date of mailing such notice or, if facsimiled, on the next Business Day following the date of transmission.

 

     

    	 	 -51-	 

    

   

		(2)	The
                                         Corporation or the Warrant Agent, as the case may be, may from time to time notify the
                                         other in the manner provided in Section 10.1(1) of a change of address which, from the
                                         effective date of such notice and until changed by like notice, shall be the address
                                         of the Corporation or the Warrant Agent, as the case may be, for all purposes of this
                                         Indenture.

 

		(3)	If,
                                         by reason of a strike, lockout or other work stoppage, actual or threatened, involving
                                         postal employees, any notice to be given to the Warrant Agent or to the Corporation hereunder
                                         could reasonably be considered unlikely to reach its destination, such notice shall be
                                         valid and effective only if it is delivered to the named officer of the party to which
                                         it is addressed, as provided in Section 10.1(1), or given by facsimilie or other means
                                         of prepaid, transmitted and recorded communication.

 

		Section 10.2	Notice to Registered Warrantholders.

 

		(1)	Unless otherwise provided herein, notice to the Registered Warrantholders under the provisions
of this Indenture shall be valid and effective if delivered or sent by ordinary post addressed to such holders at their post office
addresses appearing on the register hereinbefore mentioned and shall be deemed to have been effectively received and given on the
date of delivery or, if mailed, on the third Business Day following the date of mailing such notice. In the event that Warrants
are held in the name of the Depository, a copy of such notice shall also be sent by electronic communication to the Depository
and shall be deemed received and given on the day it is so sent.

 

		(2)	If, by reason of a strike, lockout or other work stoppage, actual or threatened, involving postal
employees, any notice to be given to the Registered Warrantholders hereunder could reasonably be considered unlikely to reach its
destination, such notice shall be valid and effective only if it is delivered to such Registered Warrantholders to the address
for such Registered Warrantholders contained in the register maintained by the Warrant Agent or such notice may be given, at the
Corporation's expense, by means of publication in the Globe and Mail, National Edition, or any other English language daily newspaper
or newspapers of general circulation in Canada, in each two successive weeks, and any so notice published shall be deemed to have
been received and given on the latest date the publication takes place.

 

		Section 10.3	Ownership of Warrants.

 

The Corporation and the
Warrant Agent may deem and treat the Registered Warrantholders as the absolute owner thereof for all purposes, and the Corporation
and the Warrant Agent shall not be affected by any notice or knowledge to the contrary except where the Corporation or the Warrant
Agent is required to take notice by statute or by order of a court of competent jurisdiction. The receipt of any such Registered
Warrantholder of the Common Shares which may be acquired pursuant thereto shall be a good discharge to the Corporation and the
Warrant Agent for the same and neither the Corporation nor the Warrant Agent shall be bound to inquire into the title of any such
holder except where the 

 

     

    	 	 -52-	 

    

 

Corporation or the Warrant Agent
is required to take notice by statute or by order of a court of competent jurisdiction.

 

		Section 10.4	Counterparts.

 

This Indenture may be executed
in several counterparts, each of which when so executed shall be deemed to be an original and such counterparts together shall
constitute one and the same instrument and notwithstanding their date of execution they shall be deemed to be dated as of the date
hereof.

 

		Section 10.5	Satisfaction and Discharge of Indenture.

 

Upon the earlier of:

 

		(a)	the date by which there shall have been delivered to the Warrant Agent for exercise or cancellation
all Warrants theretofore Authenticated hereunder, in the case of Certificated Warrants, or by way of a Transaction Instruction
(or such other instructions, in a form satisfactory to the Warrant Agent), in the case of Uncertificated Warrants, or by way of
standard processing through the book entry only system in the case of a Depository Global Warrant; and

 

		(b)	the Expiry Time;

 

and if all certificates or other entry on the
register representing Common Shares required to be issued in compliance with the provisions hereof have been issued and delivered
hereunder or to the Warrant Agent in accordance with such provisions, this Indenture shall cease to be of further effect and the
Warrant Agent, on demand of and at the cost and expense of the Corporation and upon delivery to the Warrant Agent of a certificate
of the Corporation stating that all conditions precedent to the satisfaction and discharge of this Indenture have been complied
with, shall execute proper instruments acknowledging satisfaction of and discharging this Indenture. Notwithstanding the foregoing,
the indemnities provided to the Warrant Agent by the Corporation hereunder shall remain in full force and effect and survive the
termination of this Indenture.

 

		Section 10.6	Provisions of Indenture and Warrants for the Sole Benefit
of Parties and Registered Warrantholders.

 

Nothing in this Indenture
or in the Warrants, expressed or implied, shall give or be construed to give to any person other than the parties hereto and the
Registered Warrantholders, as the case may be, any legal or equitable right, remedy or claim under this Indenture, or under any
covenant or provision herein or therein contained, all such covenants and provisions being for the sole benefit of the parties
hereto and the Registered Warrantholders.

 

     

    	 	 -53-	 

    

  

		Section
                           10.7	Common
                                         Shares or Warrants Owned by the Corporation or its Subsidiaries - Certificate to be Provided.

 

For
the purpose of disregarding any Warrants owned legally or beneficially by the Corporation in Section 7.16, the Corporation shall
provide to the Warrant Agent, from time to time, a certificate of the Corporation setting forth as at the date of such certificate:

 

		(a)	the
                                         names (other than the name of the Corporation) of the Registered Warrantholders which,
                                         to the knowledge of the Corporation, are owned by or held for the account of the Corporation;
                                         and

 

		(b)	the
                                         number of Warrants owned legally or beneficially by the Corporation;

 

and the Warrant Agent, in making the computations
in Section 7.16, shall be entitled to rely on such certificate without any additional evidence.

 

		Section 10.8	Severability.

 

If, in any jurisdiction,
any provision of this Indenture or its application to any party or circumstance is restricted, prohibited or unenforceable, such
provision will, as to such jurisdiction, be ineffective only to the extent of such restriction, prohibition or unenforceability
without invalidating the remaining provisions of this Indenture and without affecting the validity or enforceability of such provision
in any other jurisdiction or without affecting its application to other parties or circumstances.

 

		Section 10.9	Force Majeure.

 

No party shall be liable
to the other, or held in breach of this Indenture, if prevented, hindered, or delayed in the performance or observance of any provision
contained herein by reason of act of God, riots, terrorism, acts of war, epidemics, governmental action or judicial order, earthquakes,
or any other similar causes (including, but not limited to, mechanical, electronic or communication interruptions, disruptions
or failures). Performance times under this Indenture shall be extended for a period of time equivalent to the time lost because
of any delay that is excusable under this Section.

 

		Section 10.10	Assignment, Successors and Assigns.

 

Neither of the parties
hereto may assign its rights or interest under this Indenture, except as provided in Section 9.8 in the case of the Warrant Agent,
or as provided in Section 8.2 in the case of the Corporation. Subject thereto, this Indenture shall enure to the benefit of and
be binding upon the parties hereto and their respective successors and permitted assigns.

 

		Section 10.11	Rights of Rescission and Withdrawal for Holders.

 

Should a holder of Warrants
exercise any legal, statutory, contractual or other right of withdrawal or rescission that may be available to it, and the holder's
funds which were paid on exercise have already been released to the Corporation by the Warrant Agent, the Warrant Agent shall not
be responsible for ensuring the exercise is cancelled and a refund is 

 

[Signature page follows]

 

     

    	 	 -54-	 

    

 

paid back to the holder. In such cases, the holder shall
seek a refund directly from the Corporation and subsequently, the Corporation, upon surrender to the Corporation or the Warrant
Agent of any underlying shares that may have been issued, or such other procedure as agreed to by the parties hereto, shall instruct
the Warrant Agent in writing, to cancel the exercise transaction and any such underlying shares on the register, which may have
already been issued upon the Warrant exercise.  In the event that any payment is received from the Corporation by virtue of
the holder being a shareholder for such Warrants that were subsequently rescinded, such payment must be returned by the Corporation
to the holder and the Warrant Agent shall not be under any duty or obligation to take any steps to ensure or enforce that the funds
are returned pursuant to this section, nor shall the Warrant Agent be in any other way responsible in the event that any payment
is not delivered or received pursuant to this section.  Notwithstanding the foregoing, in the event that the Corporation provides
the refund to the Warrant Agent for distribution to the holder, the Warrant Agent shall return such funds to the holder as soon
as reasonably practicable, and in so doing, the Warrant Agent shall incur no liability with respect to the delivery or non-delivery
of any such funds.

 

IN WITNESS WHEREOF
the parties hereto have executed this Indenture under the hands of their proper officers in that behalf as of the date first written
above.

 

	 	 	VISTA GOLD CORP.
	 	 	 
	 	 	By:	(signed) John F. Engele
	 	 	 	John F. Engele
	 	 	 	Chief Financial Officer

 

	 	 	COMPUTERSHARE TRUST COMPANY OF CANADA
	 	 	 	 
	 	 	By:	(signed) Jill Dunn
	 	 	 	Name:   Jill Dunn
	 	 	 	Title:     Corporate Trust Officer
	 	 	 	 
	 	 	By:	(signed) Norm Hamade
	 	 	 	Name:   Norm Hamade
	 	 	 	Title:     Associate Trust Officer

 

     

    	 	 	 

    

 

Schedule
"A"

 

FORM
OF WARRANT

 

WARRANT

 

To acquire Common Shares of

 

VISTA GOLD CORP.

 

(continued pursuant to the laws of British Columbia)

 

	
        Warrant

        Certificate No. ●
	
        Certificate for                                                  
        Warrants, each entitling the holder to acquire one (1) Common Share subject to adjustment in accordance with the terms of the Warrant
        Indenture

         

        CUSIP: 927926154

         

        ISIN: CA 9279261544

 

	THIS IS TO CERTIFY THAT, for value received,
	 
	 

 

(the "Warrantholder") is the
registered holder of the number of common share purchase warrants (the "Warrants") of Vista Gold Corp. (the
"Corporation") specified above, and is entitled, on exercise of these Warrants upon and subject to the terms and
conditions set forth herein and in the Warrant Indenture hereinafter referred to (as defined below), to purchase at any time before
4:30 p.m. (Toronto time) (the "Expiry Time") on August 8, 2019 (the "Expiry Date"), one fully
paid and non-assessable common share without par value in the capital of the Corporation as constituted on the date hereof (a "Common
Share") for each Warrant subject to adjustment in accordance with the terms of the Warrant Indenture.

 

The Warrants evidenced hereby are exercisable
at or before 4:30 p.m. (Toronto time) on August 8, 2019 after which time the warrants evidenced hereby shall be deemed to be void
and of no further force or effect.

 

The right to purchase Common Shares may only
be exercised by the holder within the time set forth above by:

 

(a)          duly completing and executing the exercise
form (the "Exercise Form") attached hereto; and

 

    	 	- 1 -	 

     

    

 

(b)          surrendering this warrant certificate
(the "Warrant Certificate"), with the Exercise Form to the Warrant Agent at the principal office of the Warrant
Agent, in the city of Vancouver, British Columbia, together with a certified cheque, bank draft or money order in the lawful money
of the United States of America payable to or to the order of the Corporation in an amount equal to the purchase price of
the Common Shares so subscribed for or surrendering this the Warrant Certificate, with the Exercise Form to the Warrant Agent at
the principal office of the Warrant Agent, in the city of Vancouver, British Columbia, with a copy of such certificate(s) and the
executed Exercise Form to the Corporation and send a wire transfer to the Corporation in an amount equal to the purchase price
of the Common Shares so subscribed for in accordance with the following wire transfer instructions:

 

Wells Fargo

Account Name: Vista Gold Corp

Routing Number: 121000248

Account Number: 4977297647

Swift Code: WFBIUS6S

 

The surrender of this Warrant Certificate,
the duly completed Exercise Form and payment as provided above will be deemed to have been effected only on personal delivery thereof
to, or if sent by mail or other means of transmission on actual receipt thereof by, the Warrant Agent at its principal office as
set out above.

 

Subject to adjustment thereof in the events
and in the manner set forth in the Warrant Indenture hereinafter referred to, the exercise price payable for each Common Share
upon the exercise of Warrants shall be US$1.92 per Common Share.

 

Certificates for the Common Shares subscribed
for will be mailed to the persons specified in the Exercise Form at their respective addresses specified therein or, if so specified
in the Exercise Form, delivered to such persons at the office where this Warrant Certificate is surrendered. If fewer Common Shares
are purchased than the number that can be purchased pursuant to this Warrant Certificate, the holder hereof will be entitled to
receive without charge a new Warrant Certificate in respect of the balance of the Common Shares not so purchased. No fractional
Common Shares will be issued upon exercise of any Warrant.

 

This Warrant Certificate evidences Warrants
of the Corporation issued or issuable under the provisions of a warrant indenture (which indenture together with all other instruments
supplemental or ancillary thereto is herein referred to as the "Warrant Indenture") dated as of August 8, 2016
between the Corporation and Computershare Trust Company of Canada, as Warrant Agent, to which Warrant Indenture reference is
hereby made for particulars of the rights of the holders of Warrants, the Corporation and the Warrant Agent in respect thereof
and the terms and conditions on which the Warrants are issued and held, all to the same effect as if the provisions of the Warrant
Indenture were herein set forth, to all of which the holder, by acceptance hereof, assents. The Corporation will furnish to the
holder, on request and without charge, a copy of the Warrant Indenture.

 

    	 	- 2 -	 

     

    

  

Pursuant to Section 3.3 of the Warrant Indenture,
if at any time following the initial effectiveness of the shelf registration statement filed with the United States Securities
Commission under the United States Securities Act of 1933, as amended, registering the Common Shares issuable upon exercise of
the Warrants (the “Registration Statement”) and prior to the Expiry Date, the Corporation determines that such
Registration Statement is not effective, or the prospectus contained therein is not available for, the offer and sale of the Common
Shares issuable upon exercise of the Warrants, the Corporation shall promptly provide written notice of such determination to the
Warrant Agent. Upon receipt of such notice, the Warrant Agent shall provide a copy thereof to each Warrantholder, and confirm in
writing that the then outstanding Warrants may, until the earlier of the Registration Statement becoming effective or the Expiry
Date, only be exercised by means of a “cashless exercise” pursuant to Section 3.3(1) of the Warrant Indenture.

 

On presentation at the principal office of
the Warrant Agent as set out above, subject to the provisions of the Warrant Indenture and on compliance with the reasonable requirements
of the Warrant Agent, one or more Warrant Certificates may be exchanged for one or more Warrant Certificates entitling the holder
thereof to purchase in the aggregate an equal number of Common Shares as are purchasable under the Warrant Certificate(s) so exchanged.

 

The Warrant Indenture contains provisions for
the adjustment of the price payable for each Common Share upon the exercise of Warrants and the number of Common Shares issuable
upon the exercise of Warrants in the events and in the manner set forth therein.

 

The Warrant Indenture also contains provisions
making binding on all holders of Warrants outstanding thereunder resolutions passed at meetings of holders of Warrants held in
accordance with the provisions of the Warrant Indenture and instruments in writing signed by Warrantholders of Warrants entitled
to purchase a specific majority of the Common Shares that can be purchased pursuant to such Warrants.

 

Nothing contained in this Warrant Certificate,
the Warrant Indenture or elsewhere shall be construed as conferring upon the holder hereof any right or interest whatsoever as
a holder of Common Shares or any other right or interest except as herein and in the Warrant Indenture expressly provided. In the
event of any discrepancy between anything contained in this Warrant Certificate and the terms and conditions of the Warrant Indenture,
the terms and conditions of the Warrant Indenture shall govern.

 

Warrants may only be transferred in compliance
with the conditions of the Warrant Indenture on the register to be kept by the Warrant Agent in Vancouver, British Columbia, or
such other registrar as the Corporation, with the approval of the Warrant Agent, may appoint at such other place or places, if
any, as may be designated, upon surrender of this Warrant Certificate to the Warrant Agent or other registrar accompanied by a
written instrument of transfer in form and execution satisfactory to the Warrant Agent or other registrar and upon compliance with
the conditions prescribed in the Warrant Indenture and with such reasonable requirements as the Warrant Agent or other registrar
may prescribe and upon the transfer being duly noted thereon by the Warrant Agent or other registrar. Time is of the essence hereof.

 

This Warrant Certificate will not be valid
for any purpose until it has been countersigned by or on behalf of the Warrant Agent from time to time under the Warrant Indenture.

 

The parties hereto have declared that they
have required that these presents and all other documents related hereto be in the English language. Les parties aux présentes
déclarent qu'elles ont exigé que la présente convention, de même que tous les documents s'y rapportant,
soient rédigés en anglais.

 

    	 	- 3 -	 

     

    

  

IN WITNESS WHEREOF the Corporation has
caused this Warrant Certificate to be duly executed as of ______________, 2016.

 

	 	VISTA GOLD CORP.
	 	 	 
	 	By:	 
	 	 	Authorized Signatory

 

	Countersigned and Registered by:	 
	 	 
	COMPUTERSHARE TRUST COMPANY OF CANADA	 
	 	 	 
	By:	 	 
		Authorized Signatory	 

 

Date: _______________________

 

    	 	- 4 -	 

     

    

 

FORM OF TRANSFER

 

To: Computershare Trust Company of Canada

 

FOR VALUE RECEIVED the undersigned hereby sells,
assigns and transfers to ____________________________________________________________________________________________________________________________________________________________(print
name and address) the Warrants represented by this Warrants Certificate and hereby irrevocable constitutes and appoints ____________________
as its attorney with full power of substitution to transfer the said securities on the appropriate register of the Warrant Agent.

 

THE UNDERSIGNED TRANSFEROR HEREBY CERTIFIES AND
DECLARES that the Warrants are not being offered, sold or transferred unless the Common Shares underlying the Warrants are registered
under the United States Securities Act of 1933, as amended, and any applicable state securities laws or is exempt from such registration
requirements.

 

 ̈If
transfer is to a U.S. Person, check this box.

 

DATED this ____ day of_________________, 20____.

 

	SPACE FOR GUARANTEES OF SIGNATURES (BELOW)	
        )

         

        )

         

        )

         

        )
	
         

         

        __________________________________

         

        Signature of Transferor

         

	 	 	 
	
        _________________________________

         

        Guarantor’s Signature/Stamp
	
        )

         

        )

         

        )
	
        __________________________________

         

        Name of Transferor

 

REASON FOR TRANSFER – For US Residents
only (where the individual(s) or corporation receiving the securities is a US resident). Please select only one (see instructions
below). 

 

	 ̈  Gift	 ̈  Estate	 ̈  Private Sale	 ̈  Other (or no change in ownership)

 

	Date of Event (Date of gift, death or sale):	Value per Warrant on the date of event:

 

    	 	- 5 -	 

     

    

  

	 	 	 ̈ CAD OR   ̈ USD

 

CERTAIN
REQUIREMENTS RELATING TO TRANSFERS – READ CAREFULLY

 

The signature(s) of the transferor(s) must
correspond with the name(s) as written upon the face of this certificate(s), in every particular, without alteration or enlargement,
or any change whatsoever. All securityholders or a legally authorized representative must sign this form. The signature(s) on this
form must be guaranteed in accordance with the transfer agent’s then current guidelines and requirements at the time of transfer.
Notarized or witnessed signatures are not acceptable as guaranteed signatures. As at the time of closing, you may choose one of
the following methods (although subject to change in accordance with industry practice and standards):

 

		·	Canada and the USA: A Medallion Signature Guarantee obtained from a member of an acceptable
Medallion Signature Guarantee Program (STAMP, SEMP, NYSE, MSP). Many commercial banks, savings banks, credit unions, and all broker
dealers participate in a Medallion Signature Guarantee Program. The Guarantor must affix a stamp bearing the actual words “Medallion
Guaranteed”, with the correct prefix covering the face value of the certificate.

 

		·	Canada: A Signature Guarantee obtained from an authorized officer of the Royal Bank of Canada,
Scotia Bank or TD Canada Trust. The Guarantor must affix a stamp bearing the actual words “Signature Guaranteed”, sign
and print their full name and alpha numeric signing number. Signature Guarantees are not accepted from Treasury Branches, Credit
Unions or Caisse Populaires unless they are members of a Medallion Signature Guarantee Program. For corporate holders, corporate
signing resolutions, including certificate of incumbency, are also required to accompany the transfer, unless there is a “Signature
& Authority to Sign Guarantee” Stamp affixed to the transfer (as opposed to a “Signature Guaranteed” Stamp)
obtained from an authorized officer of the Royal Bank of Canada, Scotia Bank or TD Canada Trust or a Medallion Signature Guarantee
with the correct prefix covering the face value of the certificate.

 

		·	Outside North America: For holders located outside North America, present the certificates(s)
and/or document(s) that require a guarantee to a local financial institution that has a corresponding Canadian or American affiliate
which is a member of an acceptable Medallion Signature Guarantee Program. The corresponding affiliate will arrange for the signature
to be over-guaranteed.

 

OR

 

    	 	- 6 -	 

     

    

  

The signature(s) of the transferor(s) must
correspond with the name(s) as written upon the face of this certificate(s), in every particular, without alteration or enlargement,
or any change whatsoever. The signature(s) on this form must be guaranteed by an authorized officer of Royal Bank of Canada, Scotia
Bank or TD Canada Trust whose sample signature(s) are on file with the transfer agent, or by a member of an acceptable Medallion
Signature Guarantee Program (STAMP, SEMP, NYSE, MSP). Notarized or witnessed signatures are not acceptable as guaranteed signatures.
The Guarantor must affix a stamp bearing the actual words: “SIGNATURE GUARANTEED”, “MEDALLION GUARANTEED”
OR “SIGNATURE & AUTHORITY TO SIGN GUARANTEE”, all in accordance with the transfer agent’s then current guidelines
and requirements at the time of transfer. For corporate holders, corporate signing resolutions, including certificate of incumbency,
will also be required to accompany the transfer unless there is a “SIGNATURE & AUTHORITY TO SIGN GUARANTEE” Stamp
affixed to the Form of Transfer obtained from an authorized officer of the Royal Bank of Canada, Scotia Bank or TD Canada Trust
or a “MEDALLION GUARANTEED” Stamp affixed to the Form of Transfer, with the correct prefix covering the face value
of the certificate.

 

REASON FOR TRANSFER – FOR US RESIDENTS
ONLY

 

Consistent with US IRS regulations, Computershare
is required to request cost basis information from US securityholders. Please indicate the reason for requesting the transfer as
well as the date of event relating to the reason. The event date is not the day in which the transfer is finalized, but rather
the date of the event which led to the transfer request (i.e. date of gift, date of death of the securityholder, or the date the
private sale took place).

 

    	 	- 7 -	 

     

    

  

EXERCISE FORM

 

	TO:	Vista Gold Corp.
	 	 
	AND TO:	Computershare Trust Company of Canada
	 	3rd Floor, 510 Burrard Street
	 	Vancouver, BC, V6C 2B9

 

The undersigned holder
of the Warrants evidenced by this Warrant Certificate hereby exercises the right to acquire ____________ (A) Common Shares of Vista
Gold Corp.

 

	 	Exercise Price Payable:	
	 	 	((A) multiplied by US$1.92, subject to adjustment)

 

The undersigned hereby
exercises the right of such holder to be issued, and hereby subscribes for, Common Shares that are issuable pursuant to the exercise
of such Warrants on the terms specified in such Warrant Certificate and in the Warrant Indenture.

 

The undersigned hereby
irrevocably directs that the said Common Shares be issued, registered and delivered as follows:

 

	
         

        Name(s) in Full and

 Social Insurance

 Number(s)

        (if applicable)
	 	Address(es)	 	Number of

 Common Shares
	 	 	 	 	 
	 	 	 	 	 
	 	 	 	 	 
	 	 	 	 	 
	 	 	 	 	 

 

Please print full name
in which certificates representing the Common Shares are to be issued. If any Common Shares are to be issued to a person or persons
other than the registered holder, the registered holder must pay to the Warrant Agent all eligible transfer taxes or other government
charges, if any, and the Form of Transfer must be duly executed.

 

Once completed and executed,
this Exercise Form must be mailed or delivered to Computershare Trust Company of Canada, c/o General Manager, Corporate Trust,
3rd Floor, 510 Burrard Street, Vancouver BC, V6C 3B9.

 

The undersigned hereby
acknowledges and agrees that if that offer and sale of the Common Shares underlying the Warrants is not registered under the United
States Securities Act of 1933, the undersigned elects to exercise the above referenced Warrants by cashless exercise pursuant to
Section 3.3 of the Warrant Indenture.

 

    	 	- 8 -	 

     

    

  

It is understood that the
Corporation and Computershare Trust Company of Canada may require evidence to verify the foregoing representation.

 

DATED this ____day of _____, 20__.

 

	
         

         
	
        )

        )

        )

        )

        )

        )

        )
	 
	  	 
	Witness	
        (Signature of Warrantholder, to be the same as

        appears on the face of this Warrant Certificate)

	 	 
	 	 
	 	 	Name of Registered Warrantholder

 

 ̈         Please
check if the certificates representing the Common Shares are to be delivered at the office where this Warrant Certificate is surrendered,
failing which such certificates will be mailed to the address set out above. Certificates will be delivered or mailed as soon as
practicable after the surrender of this Warrant Certificate to the Warrant Agent.

 

    	 	- 9 -	 

     

    

 

Schedule
"B"

 

CONFIRMATION OF EXERCISE PRICE TO WARRANT
AGENT

 

	TO:	Computershare Trust Company of Canada
	 	3rd Floor, 510 Burrard Street
	 	Vancouver, BC, V6C 2B9

 

The undersigned confirms
the receipt of US$_________________________ in connection with the exercise of Warrant Certificate# _________________________ by
Registered Warrant holder:______________________________ to acquire __________________ Common Shares of Vista Gold Corp.

 

Once completed and executed,
this Confirmation Form must be mailed or delivered to Computershare Trust Company of Canada, c/o General Manager, Corporate
Trust.

 

DATED this ____day of _____, 20__.

 

	 	 
	 	Vista Gold Corp.
	 	 
	 	By:	 

 

    	 	- 10 -	 

     

    

 

Schedule
"C"

 

FORM OF WARRANT AGREEMENT

 

WARRANT

 

To acquire Common Shares of

 

VISTA GOLD CORP.

 

(continued pursuant to the laws of British Columbia)

 

	
        Warrant

        Certificate No. 2016 WA - ●
	Certificate for                                                                Warrants, each entitling the holder to acquire one (1) Common Share subject to adjustment in accordance with the terms of the Warrant Indenture

 

	THIS IS TO CERTIFY THAT, for value received,
	 
	 

 

(the "Warrantholder") is the
registered holder of the number of common share purchase warrants (the "Warrants") of Vista Gold Corp. (the
"Corporation") specified above, and is entitled, on exercise of these Warrants upon and subject to the terms and
conditions set forth herein, to purchase at any time before 4:30 p.m. (Toronto time) (the "Expiry Time") on August
8, 2019 (the "Expiry Date"), one fully paid and non-assessable common share without par value in the capital of
the Corporation as constituted on the date hereof (a "Common Share") for each Warrant, subject to adjustment in
accordance with the terms of the Warrant Indenture dated August 8, 2016, by and between the Corporation and Computershare Trust
Company of Canada (the “Warrant Indenture”). This Warrant Agreement was entered into by and between the Corporation
and the Warrantholder in consideration of the withdrawal of Warrants from the Warrant Indenture and Warrant Agency pursuant to
Section 2.13 of the Warrant Indenture. Certain undefined terms used herein have the meanings set forth in the Warrant Indenture.

 

The Warrants represented by this Warrant Agreement
shall be subject to the terms set forth in Sections 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 2.0, 2.3, 2.4, 2.10, 2.11, 2.12, 3.1,3.2(6),
3.2(7), 3.2(9), 3.2(10), 3.2(11), 3.3, 3.4, 3.6, 3.7, 3.8, 3.10, 3.11(1), 4.1, 4.2, 4.3, 4.4, 4.5. 4.6, 4.7, 4.8, 4.9, 4.11, 5.1,
5.2, 5.5, 10.1, 10.2, 10.3, 10.8, 10.9 and 10.11 of the Warrant Indenture, as of the date of this Warrant Agreement, as applied
to Certificated Warrants and such terms are hereby incorporated by reference, except that any reference to the Warrant Agent shall
refer to the Corporation as the context may required. The Corporation will furnish to the holder, on request and without charge,
a copy of the Warrant Indenture. This Warrant Agreement is not subject to the Warrant Agency under the Warrant Indenture. For purposes
of this Warrant Agreement, references in the Warrant Indenture to a “Registered Warrantholder” shall be deemed
to include the Warrantholder and any references to the “Warrant Agent” shall be deemed to refer to the Corporation.

 

    	 	- 11 -	 

     

    

  

The Corporation covenants and agrees that it
shall not fix a record date for the issuance of rights, options or warrants to all or substantially all the holders of its outstanding
Common Shares without obtaining both the approval of the Toronto Stock Exchange to permit the Warrantholder to fully participate
in such issuance and the prior consent of a majority of the Registered Warrantholders together with holders of Warrants governed
by Warrant Agreements is given.

 

The Warrants evidenced hereby are exercisable
at or before 4:30 p.m. (Toronto time) on August 8, 2019 after which time the warrants evidenced hereby shall be deemed to be void
and of no further force or effect.

 

Exercise of the purchase rights represented
by this Warrant Agreement may be made, in whole or in part, by delivery to the Corporation of the exercise form in the form annexed
hereto (the “Exercise Form”), duly completed and executed by the Warrantholder or his, her or its executors,
administrators (or other legal representatives or his, her or its attorney duly appointed by an instrument in writing in form and
manner satisfactory to the Corporation, acting reasonably), either (i) by personal delivery, mail or courier to Vista Gold Corp.,
Suite 5, 7961 Shaffer Parkway, Littleton, Colorado, 80127, USA, Attention: Chief Financial Officer (or such other office or agency
of the Corporation as it may designate by notice in writing to the Warrantholder at the address of the Warrantholder appearing
on the books of the Company) by delivery of a facsimile copy to 720 981 1186, Attention: Chief Financial Officer, and within one
(1) Trading Day of the date said Exercise Form is delivered to the Corporation, payment of the aggregate Exercise Price of the
Common Shares thereby purchased by wire transfer to:

 

Wells Fargo

Account Name: Vista Gold Corp

Routing Number: 121000248

Account Number: 4977297647

Swift Code: WFBIUS6S

 

or by delivery to the Corporation at the address
specified in (i) above of a certified cheque, bank draft or money order in the lawful money of the United States of America
payable to or to the order of the Corporation or, if available, pursuant to the cashless exercise procedure specified in Section
3.3 of the Warrant Indenture.

 

No ink original Exercise Form shall be required,
nor shall any medallion guarantee (or other type of guarantee or notarization) of any Exercise Form be required. Notwithstanding
anything herein to the contrary, the Warrantholder shall not be required to physically surrender this Warrant to the Corporation
until the Warrantholder has purchased all of the Common Shares available hereunder and the Warrant has been exercised in full,
in which case, the Warrantholder shall surrender this Warrant to the Corporation for cancellation within three (3) Trading Days
of the date the final Exercise Form is delivered to the Corporation. Partial exercises of this Warrant resulting in purchases of
a portion of the total number of Common Shares available hereunder shall have the effect of lowering the outstanding number of
Common Shares purchasable hereunder in an amount equal to the applicable number of Common Shares purchased. The Warrantholder and
the Corporation shall maintain records showing the number of Common Shares purchased and the date of such purchases. The Company
shall deliver any objection to any Exercise within one (1) Business Day of receipt of such notice. The Warrantholder and any
assignee, by acceptance of this Warrant Agreement, acknowledge and agree that, by reason of the provisions of this paragraph, following
the purchase of a portion of the Common Shares hereunder, the number of Common Shares available for purchase hereunder at any given
time may be less than the amount stated on the face hereof.

 

    	 	- 12 -	 

     

    

 

Within three (3) Trading Days after the Exercise
Date with respect to a Warrant (the “Common Share Delivery Date”), the Corporation shall cause to be delivered
or mailed to the Person or Persons in whose name or names the Warrant is registered or, if so specified in writing by the holder,
cause to be delivered to such Person or Persons at the offices of the Corporation specified above where the Warrant Certificate
was surrendered, a certificate or certificates for the appropriate number of Common Shares subscribed for, or any other appropriate
evidence of the issuance of Common Shares to such Person or Persons in respect of Common Shares issued under the book entry registration
system.

 

Subject to adjustment thereof in the events
and in the manner set forth in the Warrant Indenture, the exercise price payable for each Common Share upon the exercise of Warrants
shall be US$1.92 per Common Share.

 

Certificates for the Common Shares subscribed
for will be mailed to the persons specified in the Exercise Form at their respective addresses specified therein or, if so specified
in the Exercise Form, delivered to such persons at the office where this Warrant Certificate is surrendered. If fewer Common Shares
are purchased than the number that can be purchased pursuant to this Warrant Certificate, the holder hereof will be entitled to
receive without charge a new Warrant Certificate in respect of the balance of the Common Shares not so purchased. No fractional
Common Shares will be issued upon exercise of any Warrant.

 

Pursuant to the terms set forth in Section
3.3 of the Warrant Indenture, if at any time following the initial effectiveness of the shelf registration statement filed with
the United States Securities Commission under the United States Securities Act of 1933, as amended, registering the Common Shares
issuable upon exercise of the Warrants (the “Registration Statement”) and prior to the Expiry Date, the Corporation
determines that such Registration Statement is not effective, or the prospectus contained therein is not available for, the offer
and sale of the Common Shares issuable upon exercise of the Warrants, the Corporation shall promptly provide written notice of
such determination to the Warrantholder, and confirm in writing that the then outstanding Warrants may, until the earlier of the
Registration Statement becoming effective or the Expiry Date, only be exercised by means of a “cashless exercise” pursuant
to the terms set forth in Section 3.3(1) of the Warrant Indenture.

 

On presentation at the principal office of
the Corporation as set out above, subject to the applicable provisions of the Warrant Indenture incorporated herein by reference
and on compliance with the reasonable requirements of the Corporation, one or more Warrant Agreements may be exchanged for one
or more Warrant Agreements entitling the holder thereof to purchase in the aggregate an equal number of Common Shares as are purchasable
under the Warrant Agreement(s) so exchanged.

 

    	 	- 13 -	 

     

    

  

Terms adopted and incorporated into this Warrant
Agreement from the Warrant Indenture provide for the adjustment of the price payable for each Common Share upon the exercise of
Warrants and the number of Common Shares issuable upon the exercise of Warrants in the events and in the manner set forth therein.

 

Terms adopted and incorporated into this Warrant
Agreement from the Warrant Indenture also provide for making binding on all holders of Warrants outstanding thereunder resolutions
passed at meetings of holders of Warrants held in accordance with the provisions of the Warrant Indenture and instruments in writing
signed by Warrantholders of Warrants entitled to purchase a specific majority of the Common Shares that can be purchased pursuant
to such Warrants. Such resolutions shall be binding on the Warrantholder under this Warrant Agreement.

 

Nothing contained in this Warrant Agreement
or elsewhere shall be construed as conferring upon the holder hereof any right or interest whatsoever as a holder of Common Shares
or any other right or interest except as herein expressly provided. In the event of any discrepancy between anything contained
in this Warrant Agreement and the terms and conditions of the Warrant Indenture, the terms and conditions of adopted and incorporated
into this Warrant Agreement from the Warrant Indenture shall govern.

 

Warrants may only be transferred in compliance
with the conditions adopted and incorporated into this Warrant Agreement from the Warrant Indenture on the register to be kept
by the Corporation in its principal office, or such other registrar as the Corporation may appoint at such other place or places,
if any, as may be designated, upon surrender of this Warrant Agreement to the Corporation or other registrar as the Corporation
may appoint accompanied by a written instrument of transfer in form and execution satisfactory to the Corporation and upon compliance
with the conditions adopted and incorporated into this Warrant Agreement from the Warrant Indenture and with such reasonable requirements
as the may prescribe and upon the transfer being duly noted thereon by the Corporation or other registrar as the Corporation may
appoint. A transferee will be bound by the terms and conditions set forth in the Warrant Agreement. Time is of the essence hereof.

 

This Warrant Agreement will not be valid for
any purpose until it has been countersigned by the Corporation.

 

The parties hereto have declared that they
have required that these presents and all other documents related hereto be in the English language. Les parties aux présentes
déclarent qu'elles ont exigé que la présente convention, de même que tous les documents s'y rapportant,
soient rédigés en anglais.

 

IN WITNESS WHEREOF the Corporation has
caused this Warrant Agreement to be duly executed as of ______________, 20___.

 

    	 	- 14 -	 

     

    

  

	 	VISTA GOLD CORP.
	 	 
	 	By:	 
	 	Authorized Signatory

 

    	 	- 15 -	 

     

    

 

FORM OF TRANSFER

 

To: Vista Gold Corp.

 

FOR VALUE RECEIVED the undersigned hereby sells,
assigns and transfers to ____________________________________________________________________________________________________________________________________________________________(print
name and address) the Warrants represented by this Warrants Agreement and hereby irrevocable constitutes and appoints ____________________
as its attorney with full power of substitution to transfer the said securities on the appropriate register of the Corporation.

 

THE UNDERSIGNED TRANSFEROR HEREBY CERTIFIES AND
DECLARES that the Warrants are not being offered, sold or transferred unless the Common Shares underlying the Warrants are registered
under the United States Securities Act of 1933, as amended, and any applicable state securities laws or is exempt from such registration
requirements. By acceptance of the Warrant Agreement issued under this Form of Transfer, the transferee will be bound by the terms
and conditions set forth in the Warrant Agreement.

 

 ̈          If
transfer is to a U.S. Person, check this box.

 

DATED this ____ day of_________________, 20____.

 

	SPACE FOR GUARANTEES OF SIGNATURES (BELOW)	
        )

         

        )

         

        )

         

        )
	
         

         

        __________________________________

         

        Signature of Transferor

         

	 	 	 
	
        _________________________________

         

        Guarantor’s Signature/Stamp
	
        )

         

        )

         

        )
	
        __________________________________

         

        Name of Transferor

 

REASON FOR TRANSFER – For US Residents
only (where the individual(s) or corporation receiving the securities is a US resident). Please select only one (see instructions
below). 

 

	 ̈
    Gift 	 ̈
    Estate	 ̈
    Private Sale 	 ̈
     Other (or no change in ownership)

 

	Date of Event (Date of gift, death or sale):	Value per Warrant on the date of event:

 

    	 	- 16 -	 

     

    

 

			 ̈ CAD OR   ̈ USD

 

CERTAIN REQUIREMENTS RELATING TO TRANSFERS
– READ CAREFULLY

 

The signature(s) of the transferor(s) must
correspond with the name(s) as written upon the face of this certificate(s), in every particular, without alteration or enlargement,
or any change whatsoever. All securityholders or a legally authorized representative must sign this form. The signature(s) on this
form must be guaranteed in accordance with the transfer agent’s then current guidelines and requirements at the time of transfer.
Notarized or witnessed signatures are not acceptable as guaranteed signatures. As at the time of closing, you may choose one of
the following methods (although subject to change in accordance with industry practice and standards):

 

		·	Canada and the USA: A Medallion Signature Guarantee obtained from a member of an acceptable
Medallion Signature Guarantee Program (STAMP, SEMP, NYSE, MSP). Many commercial banks, savings banks, credit unions, and all broker
dealers participate in a Medallion Signature Guarantee Program. The Guarantor must affix a stamp bearing the actual words “Medallion
Guaranteed”, with the correct prefix covering the face value of the certificate.

 

		·	Canada: A Signature Guarantee obtained from an authorized officer of the Royal Bank of Canada,
Scotia Bank or TD Canada Trust. The Guarantor must affix a stamp bearing the actual words “Signature Guaranteed”, sign
and print their full name and alpha numeric signing number. Signature Guarantees are not accepted from Treasury Branches, Credit
Unions or Caisse Populaires unless they are members of a Medallion Signature Guarantee Program. For corporate holders, corporate
signing resolutions, including certificate of incumbency, are also required to accompany the transfer, unless there is a “Signature
& Authority to Sign Guarantee” Stamp affixed to the transfer (as opposed to a “Signature Guaranteed” Stamp)
obtained from an authorized officer of the Royal Bank of Canada, Scotia Bank or TD Canada Trust or a Medallion Signature Guarantee
with the correct prefix covering the face value of the certificate.

 

		·	Outside North America: For holders located outside North America, present the certificates(s)
and/or document(s) that require a guarantee to a local financial institution that has a corresponding Canadian or American affiliate
which is a member of an acceptable Medallion Signature Guarantee Program. The corresponding affiliate will arrange for the signature
to be over-guaranteed.

 

OR

    	 	- 17 -	 

     

    

  

The signature(s) of the transferor(s) must
correspond with the name(s) as written upon the face of this certificate(s), in every particular, without alteration or enlargement,
or any change whatsoever. The signature(s) on this form must be guaranteed by an authorized officer of Royal Bank of Canada, Scotia
Bank or TD Canada Trust whose sample signature(s) are on file with the transfer agent, or by a member of an acceptable Medallion
Signature Guarantee Program (STAMP, SEMP, NYSE, MSP). Notarized or witnessed signatures are not acceptable as guaranteed signatures.
The Guarantor must affix a stamp bearing the actual words: “SIGNATURE GUARANTEED”, “MEDALLION GUARANTEED”
OR “SIGNATURE & AUTHORITY TO SIGN GUARANTEE”, all in accordance with the transfer agent’s then current guidelines
and requirements at the time of transfer. For corporate holders, corporate signing resolutions, including certificate of incumbency,
will also be required to accompany the transfer unless there is a “SIGNATURE & AUTHORITY TO SIGN GUARANTEE” Stamp
affixed to the Form of Transfer obtained from an authorized officer of the Royal Bank of Canada, Scotia Bank or TD Canada Trust
or a “MEDALLION GUARANTEED” Stamp affixed to the Form of Transfer, with the correct prefix covering the face value
of the certificate.

 

REASON FOR TRANSFER – FOR US RESIDENTS
ONLY

 

Consistent with US IRS regulations, the Corporation
is required to request cost basis information from US securityholders. Please indicate the reason for requesting the transfer as
well as the date of event relating to the reason. The event date is not the day in which the transfer is finalized, but rather
the date of the event which led to the transfer request (i.e. date of gift, date of death of the securityholder, or the date the
private sale took place).

 

    	 	- 18 -	 

     

    

 

EXERCISE FORM

 

		TO:	Vista Gold Corp.

 

The undersigned holder
of the Warrants evidenced by this Warrant Agreement hereby exercises the right to acquire ____________ (A) Common Shares of Vista
Gold Corp.

 

	 	Exercise Price Payable:	__________________________________________________
	 	 	((A) multiplied by US$1.92, subject to adjustment)

 

The undersigned hereby
exercises the right of such holder to be issued, and hereby subscribes for, Common Shares that are issuable pursuant to the exercise
of such Warrants on the terms specified in such Warrant Agreement and in the Warrant Indenture.

 

The undersigned hereby
irrevocably directs that the said Common Shares be issued, registered and delivered as follows:

 

	Name(s) in Full and

Social Insurance

Number(s)

(if applicable)	 	Address(es)	 	Number of

Common Shares
	 	 	 	 	 
	 	 	 	 	 
	 	 	 	 	 
	 	 	 	 	 
	 	 	 	 	 

 

Please print full name
in which certificates representing the Common Shares are to be issued. If any Common Shares are to be issued to a person or persons
other than the registered holder, the registered holder must pay to the Corporation all eligible transfer taxes or other government
charges, if any, and the Form of Transfer must be duly executed.

 

Once completed and executed,
this Exercise Form must be: (i) mailed or delivered to Vista Gold Corp., Suite 5, 7961 Shaffer Parkway, Littleton, Colorado,
80127, USA, Attention: Chief Financial Officer or (ii) faxed to 720 981 1186, Attention: Chief Financial Officer (with confirmation
of receipt by the Corporation).

 

The undersigned hereby
acknowledges and agrees that if that offer and sale of the Common Shares underlying the Warrants is not registered under the United
States Securities Act of 1933, the undersigned elects to exercise the above referenced Warrants by cashless exercise pursuant to
Section 3.3 of the Warrant Indenture.

 

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

 

    	 	- 19 -	 

     

    

  

DATED this ____day of _____, 20__.

 

	
         

         
	
        )

        )

        )

        )

        )

        )

        )
	 
	 	 
	Witness	
        (Signature of Warrantholder, to be the same
        as

        appears on the face of this Warrant Agreement)

	 	 
	 	 
	 	 	Name of Registered Warrantholder

 

 ̈         Please
check if the certificates representing the Common Shares are to be delivered at the office where this Warrant Agreement is surrendered,
failing which such certificates will be mailed to the address set out above.

 

    	 	- 20 -	 

     

    

 

Schedule D - Withdrawal Notice

 

WITHDRAWAL NOTICE AND RETURN TO TREASURY

 

Date:    [•]

 

	To:	Computershare Trust Company of Canada. (“Computershare”)
	 	510 Burrard Street, 3rd floor
	 	Vancouver BC
	 	V6C 3B9
	 	 
	And to:	Vista Gold Corp. 
	 	Suite 5, 7961 Shaffer Parkway
	 	Littleton, CO 80127, USA
	 	Attention: Chief Financial Officer

 

______________________________________________________(the
"Warrantholder") is the registered holder of the number of common share purchase warrants (the "Warrants")
of Vista Gold Corp. (the "Corporation") specified below:

 

	Name and Address	 	Registration Particulars	 	Number of

Warrants: 	 	Certificate #
	 	 	 	 	 	 	 
	 	 	Total Warrants:	 	 	 	 

 

You are hereby authorized and directed
to cancel and return to treasury the certificates set out above for warrants issued pursuant to a warrant indenture dated
August 8, 2016 between the Corporation and Computershare (the “Warrant Indenture”).

 

The warrants are being cancelled
pursuant to section 2.13 of the Warrant Indenture by the Warrantholder and are to be surrendered to treasury for cancellation.

 

The Warrantholder hereby releases,
indemnifies, and agrees to save harmless Computershare from all costs, charges, claims, demands, losses and expenses resulting
from Computershare's compliance in good faith with regards to the above instructions.

 

[Signature page follows]

 

    	 	- 21 -	 

     

    

 

THE
UNDERSIGNED WARRANTHOLDER, with all requisite legal power and authority to execute and deliver this Withdrawal Notice and
Return to Treasury, by acceptance of the Warrant Agreement, agrees to be bound by the terms and conditions set forth in the Warrant
Agreement.

 

DATED this ____day of _____, 20__.

 

	 	 	 
	Witness	 	(Signature of Warrantholder, to be the same as appears on the face of this Warrant Certificate)
	 	 	 
	 	 	 
	 	 	Name of Registered Warrantholder

   

    	 	- 22 -

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