Exhibit 4.2


 


UNDERWRITER COMMON SHARES PURCHASE WARRANT


 


VISTA GOLD CORP.


 


	Warrant Shares: ______	 	Initial Exercise Date: July 12, 2021


 


THIS
UNDERWRITER COMMON SHARES PURCHASE WARRANT (the “Warrant”) certifies that, for value received, _______ or its assigns
(the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter
set forth, at any time on or after the date hereof (the “Initial Exercise Date”) and on or prior to 5:00 p.m. (New
York City time) on July 12, 2024 (the “Termination Date”) but not thereafter, to subscribe for and purchase from
Vista Gold Corp., a company incorporated under the laws of the Province of British Columbia, Canada (the “Company”),
up to _________ Common Shares (as subject to adjustment hereunder, the “Warrant Shares”). The purchase price of one
Common Share under this Warrant shall be equal to the Exercise Price, as defined in Section 2(b). This Warrant is issued pursuant
to the Underwriting Agreement.


 


Section 1.     Definitions.
In addition to the terms defined elsewhere in this Warrant, the following terms have the meanings indicated in this Section 1:


 


“Affiliate”
means any Person that, directly or indirectly through one or more intermediaries, controls or is controlled by or is under common control
with a Person, as such terms are used in and construed under Rule 405 under the Securities Act.


 


“Bid Price”
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 bid price of the Common Shares for the time in question (or the nearest preceding date) on the Trading
Market in the United States on which the Common Shares are then listed or quoted as reported by Bloomberg L.P. (based on a Trading Day
from 9:30 a.m. (New York City time) to 4:02 p.m. (New York City time)), (b)  if OTCQB or OTCQX is not a Trading Market,
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 on the Pink Open Market (or a similar organization or agency succeeding to its functions of reporting prices), the most recent
bid price per Common Share so reported, or (d) in all other cases, the fair market value of a Common Share 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 Company, the fees and expenses of which shall be paid by the Company.


 


“Board
of Directors” means the board of directors of the Company.


 






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“Business
Day” means any day other than Saturday, Sunday or other day on which commercial banks in The City of New York are authorized
or required by law to remain closed; provided, however, for clarification, commercial banks shall not be deemed to be authorized
or required by law to remain closed due to “stay at home”, “shelter-in-place”, “non-essential employee” 
or any other similar orders or restrictions or the closure of any physical branch locations at the direction of any governmental authority
so long as the electronic funds transfer systems (including for wire transfers) of commercial banks in The City of New York generally
are open for use by customers on such day.


 


“Commission”
means the United States Securities and Exchange Commission.


 


“Common
Shares” means the common shares of the Company, no par value, and any other class of securities into which such securities may
hereafter be reclassified or changed.


 


“Common
Share Equivalents” means any securities of the Company or the Subsidiaries which would entitle the holder thereof to acquire
at any time Common Shares, including, without limitation, any debt, preferred stock, right, option, warrant or other instrument that is
at any time convertible into or exercisable or exchangeable for, or otherwise entitles the holder thereof to receive, Common Shares.


 


“Exchange
Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder.


 


“Person”
means an individual or corporation, partnership, trust, incorporated or unincorporated association, joint venture, limited liability company,
joint stock company, government (or an agency or subdivision thereof) or other entity of any kind.


 


“Registration
Statement” means the Company’s registration statement on Form S-3 (File No. 333-239139) and any Rule 462(b) Registration
Statement.


 


“Rule 462(b) Registration
Statement” means any registration statement prepared by the Company registering additional securities of the Company, which
was filed with the Commission on or prior to the date of the Underwriting Agreement and became automatically effective pursuant to Rule 462(b) promulgated
by the Commission pursuant to the Securities Act.


 


“Securities
Act” means the Securities Act of 1933, as amended, and the rules and regulations promulgated thereunder.


 


“Subsidiary”
means any subsidiary of the Company and shall, where applicable, also include any direct or indirect subsidiary of the Company formed
or acquired after the date hereof.


 


“Trading
Day” means a day on which the Common Shares are traded on a Trading Market in the United States.


 






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“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 American, the Nasdaq Capital Market, the Nasdaq Global Market, the Nasdaq Global Select Market, the New York Stock
Exchange or the Toronto Stock Exchange (or any successors to any of the foregoing).


 


“Transfer
Agent” means Computershare Investor Services Inc., the current transfer agent of the Company, and any successor transfer agent
of the Company.


 


“Underwriting
Agreement” means the underwriting agreement, dated as of July 7, 2021, among the Company and H.C. Wainwright &
Co., LLC as representative of the underwriters named therein, as amended, modified or supplemented from time to time in accordance with
its terms.


 


“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 primary Trading Market in the United States on which the Common Shares are then listed or quoted as reported by Bloomberg L.P.
(based on a Trading Day from 9:30 a.m. (New York City time) to 4:02 p.m. (New York City time)), (b)  if OTCQB or OTCQX
is not a Trading Market, 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 on the Pink Open Market (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 Common Share 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 Company, the fees and expenses of which shall be paid by the Company.


 


“Warrants”
means this Warrant and other Common Shares purchase warrants issued by the Company pursuant to the Registration Statement.


 


Section 2.          Exercise.


 


a)            Exercise
of Warrant. Exercise of the purchase rights represented by this Warrant may be made, in whole or in part, at any time or times on
or after the Initial Exercise Date and on or before the Termination Date by delivery to the Company of a duly executed PDF copy submitted
by e-mail (or e-mail attachment) of the Notice of Exercise in the form annexed hereto (the “Notice of Exercise”). Within
the earlier of (i) two (2) Trading Days and (ii) the number of Trading Days comprising the Standard Settlement Period (as
defined in Section 2(d)(i) herein) following the date of exercise as aforesaid, the Holder shall deliver the aggregate Exercise
Price for the shares specified in the applicable Notice of Exercise by wire transfer or cashier’s check drawn on a United States
bank unless the cashless exercise procedure specified in Section 2(c) below is specified in the applicable Notice of Exercise.
No ink-original Notice of Exercise shall be required, nor shall any medallion guarantee (or other type of guarantee or notarization) of
any Notice of Exercise be required. Notwithstanding anything herein to the contrary, the Holder shall not be required to physically surrender
this Warrant to the Company until the Holder has purchased all of the Warrant Shares available hereunder and the Warrant has been exercised
in full, in which case, the Holder shall surrender this Warrant to the Company for cancellation within three (3) Trading Days of
the date on which the final Notice of Exercise is delivered to the Company. Partial exercises of this Warrant resulting in purchases of
a portion of the total number of Warrant Shares available hereunder shall have the effect of lowering the outstanding number of Warrant
Shares purchasable hereunder in an amount equal to the applicable number of Warrant Shares purchased. The Holder and the Company shall
maintain records showing the number of Warrant Shares purchased and the date of such purchases. The Company shall deliver any objection
to any Notice of Exercise within one (1) Business Day of receipt of such notice. The Holder and any assignee, by acceptance of
this Warrant, acknowledge and agree that, by reason of the provisions of this paragraph, following the purchase of a portion of the Warrant
Shares hereunder, the number of Warrant Shares available for purchase hereunder at any given time may be less than the amount stated on
the face hereof.


 






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b)            Exercise
Price. The exercise price per Common Share under this Warrant shall be US$1.25, subject to adjustment hereunder (the “Exercise
Price”).


 


c)            Cashless
Exercise. If at the time of exercise hereof there is no effective registration statement registering, or the prospectus contained
therein is not available for the issuance of the Warrant Shares to the Holder, then this Warrant may also be exercised, in whole or in
part, at such time by means of a “cashless exercise” in which the Holder shall be entitled to receive a number of Warrant
Shares equal to the quotient obtained by dividing [(A-B) (X)] by (A), where:


 


(A) =      as applicable:
(i) the VWAP on the Trading Day immediately preceding the date of the applicable Notice of Exercise if such Notice of Exercise is
(1) both executed and delivered pursuant to Section 2(a) hereof on a day that is not a Trading Day or (2) both executed
and delivered pursuant to Section 2(a) hereof on a Trading Day prior to the opening of “regular trading hours” (as
defined in Rule 600(b)(68) of Regulation NMS promulgated under the federal securities laws) on such Trading Day, (ii) at the
option of the Holder, either (y) the VWAP on the Trading Day immediately preceding the date of the applicable Notice of Exercise
or (z) the Bid Price of the Common Shares on the principal Trading Market as reported by Bloomberg L.P. as of the time of the Holder’s
execution of the applicable Notice of Exercise if such Notice of Exercise is executed during “regular trading hours” on a
Trading Day and is delivered within two (2) hours thereafter (including until two (2) hours after the close of “regular
trading hours” on a Trading Day) pursuant to Section 2(a) hereof or (iii) the VWAP on the date of the applicable
Notice of Exercise if the date of such Notice of Exercise is a Trading Day and such Notice of Exercise is both executed and delivered
pursuant to Section 2(a) hereof after the close of “regular trading hours” on such Trading Day;


 






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


 


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


 


If Warrant Shares
are issued in such a cashless exercise, the parties acknowledge and agree that in accordance with Section 3(a)(9) of the Securities
Act, the Warrant Shares shall take on the registered characteristics of the Warrants being exercised. The Company agrees not to take any
position contrary to this Section 2(c).


 


Notwithstanding
anything herein to the contrary, on the Termination Date, this Warrant shall be automatically exercised via cashless exercise pursuant
to this Section 2(c).


 


		d)	Mechanics of Exercise.



 


		i.	Delivery of Warrant Shares Upon Exercise. The Company shall cause the Warrant Shares purchased
hereunder to be transmitted by the Transfer Agent to the Holder by (a) crediting the account of the Holder’s or its designee’s
balance account with The Depository Trust Company through its Deposit or Withdrawal at Custodian system (“DWAC”) if
the Company is then a participant in such system or (b) if the Holder is a resident of Canada, causing to be delivered to the Holder
an uncertificated position in CDS Clearing and Depository Services Inc. representing such Warrant Shares, and, in the case of (a) or
(b), either (A) there is an effective registration statement permitting the issuance of the Warrant Shares to or resale of the Warrant
Shares by Holder or (B) this Warrant is being exercised via cashless exercise, and otherwise by physical delivery of a certificate,
registered in the Company’s share register in the name of the Holder or its designee, for the number of Warrant Shares to which
the Holder is entitled pursuant to such exercise to the address specified by the Holder in the Notice of Exercise by the date that is
the earliest of (i) two (2) Trading Days after the delivery to the Company of the Notice of Exercise, (ii) one (1) Trading
Day after delivery of the aggregate Exercise Price to the Company and (iii) the number of Trading Days comprising the Standard Settlement
Period after the delivery to the Company of the Notice of Exercise (such date, the “Warrant Share Delivery Date”).
Upon delivery of the Notice of Exercise, the Holder shall be deemed for all corporate purposes to have become the holder of record of
the Warrant Shares with respect to which this Warrant has been exercised, irrespective of the date of delivery of the Warrant Shares,
provided that payment of the aggregate Exercise Price (other than in the case of a cashless exercise) is received within the earlier of
(i) two (2) Trading Days and (ii) the number of Trading Days comprising the Standard Settlement Period following delivery
of the Notice of Exercise. The Company agrees to maintain a transfer agent that is a participant in the FAST program so long as this Warrant
remains outstanding and exercisable. As used herein, “Standard Settlement Period” means the standard settlement period,
expressed in a number of Trading Days, on the Company’s primary Trading Market in the United States with respect to the Common Shares
as in effect on the date of delivery of the Notice of Exercise. Notwithstanding the foregoing, with respect to any Notice(s) of Exercise
delivered on or prior to 12:00 p.m. (New York City time) on the Initial Exercise Date, which may be delivered at any time after the
time of execution of the Underwriting Agreement, the Company agrees to deliver the Warrant Shares subject to such notice(s) by 4:00
p.m. (New York City time) on the Initial Exercise Date and the Initial Exercise Date shall be the Warrant Share Delivery Date for
purposes hereunder, provided that payment of the aggregate Exercise Price (other than in the case of a cashless exercise) is received
by such Warrant Share Delivery Date.



 






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ii.            Delivery
of New Warrants Upon Exercise. If this Warrant shall have been exercised in part, the Company shall, at the request of a Holder and
upon surrender of this Warrant certificate, at the time of delivery of the Warrant Shares, deliver to the Holder a new Warrant evidencing
the rights of the Holder to purchase the unpurchased Warrant Shares called for by this Warrant, which new Warrant shall in all other respects
be identical with this Warrant.


 


iii.            Rescission
Rights. If the Company fails to cause the Transfer Agent to transmit to the Holder the Warrant Shares pursuant to Section 2(d)(i) by
the Warrant Share Delivery Date, then the Holder will have the right to rescind such exercise.


 


iv.            Compensation
for Buy-In on Failure to Timely Deliver Warrant Shares Upon Exercise. In addition to any other rights available to the Holder, if
the Company fails to cause the Transfer Agent to transmit to the Holder the Warrant Shares in accordance with the provisions of Section 2(d)(i) above
pursuant to an exercise on or before the Warrant Share Delivery Date, and if after such date the Holder is required by its broker to purchase
(in an open market transaction or otherwise) or the Holder’s brokerage firm otherwise purchases, Common Shares to deliver in satisfaction
of a sale by the Holder of the Warrant Shares which the Holder anticipated receiving upon such exercise (a “Buy-In”),
then the Company shall (A) pay in cash to the Holder the amount, if any, by which (x) the Holder’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 Warrant Shares that the Company was required to deliver to the Holder 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 Holder, either reinstate
the portion of the Warrant and equivalent number of Warrant Shares for which such exercise was not honored (in which case such exercise
shall be deemed rescinded) or deliver to the Holder the number of Common Shares that would have been issued had the Company timely complied
with its exercise and delivery obligations hereunder. For example, if the Holder purchases Common Shares having a total purchase price
of US$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 US$10,000, under clause (A) of the immediately preceding sentence the Company shall be required to pay the
Holder US$1,000. The Holder shall provide the Company written notice indicating the amounts payable to the Holder in respect of the Buy-In
and, upon request of the Company, evidence of the amount of such loss. Nothing herein shall limit a Holder’s right to pursue any
other remedies available to it hereunder, at law or in equity including, without limitation, a decree of specific performance and/or injunctive
relief with respect to the Company’s failure to timely deliver Common Shares upon exercise of the Warrant as required pursuant to
the terms hereof.


 






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v.            No
Fractional Shares or Scrip. No fractional shares or scrip representing fractional shares shall be issued upon the exercise of this
Warrant. As to any fraction of a share which the Holder would otherwise be entitled to purchase upon such exercise, the Company shall
round down to the nearest whole share and pay to the Holder a cash adjustment in respect of such final fraction in an amount equal to
such fraction multiplied by the Exercise Price upon request by the Holder.


 


vi.            Charges,
Taxes and Expenses. Issuance of Warrant Shares shall be made without charge to the Holder for any issue or transfer tax or other incidental
expense in respect of the issuance of such Warrant Shares, all of which taxes and expenses shall be paid by the Company, and such Warrant
Shares shall be issued in the name of the Holder or in such name or names as may be directed by the Holder; provided, however,
that, in the event that Warrant Shares are to be issued in a name other than the name of the Holder, this Warrant when surrendered for
exercise shall be accompanied by the Assignment Form attached hereto duly executed by the Holder and the Company may require, as
a condition thereto, the payment of a sum sufficient to reimburse it for any transfer tax incidental thereto. The Company shall pay all
Transfer Agent fees required for same-day processing of any Notice of Exercise and all fees to the Depository Trust Company (or another
established clearing corporation performing similar functions) required for same-day electronic delivery of the Warrant Shares.


 


vii.            Closing
of Books. The Company will not close its shareholder books or records in any manner which prevents the timely exercise of this Warrant,
pursuant to the terms hereof.


 






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e)            Holder’s
Exercise Limitations. The Company shall not effect any exercise of this Warrant, and a Holder shall not have the right to exercise
any portion of this Warrant, pursuant to Section 2 or otherwise, to the extent that after giving effect to such issuance after exercise
as set forth on the applicable Notice of Exercise, the Holder (together with the Holder’s Affiliates, and any other Persons acting
as a group together with the Holder or any of the Holder’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 Holder and its Affiliates and Attribution Parties shall include the number of Common
Shares issuable upon exercise of this Warrant with respect to which such determination is being made, but shall exclude the number of
Common Shares which would be issuable upon (i) exercise of the remaining, nonexercised portion of this Warrant beneficially owned
by the Holder or any of its Affiliates or Attribution Parties and (ii) exercise or conversion of the unexercised or nonconverted
portion of any other securities of the Company (including, without limitation, any other Common Share Equivalents) subject to a limitation
on conversion or exercise analogous to the limitation contained herein beneficially owned by the Holder or any of its Affiliates or Attribution
Parties.  Except as set forth in the preceding sentence, for purposes of this Section 2(e), beneficial ownership shall be calculated
in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder, it being acknowledged
by the Holder that the Company is not representing to the Holder that such calculation is in compliance with Section 13(d) of
the Exchange Act and the Holder is solely responsible for any schedules required to be filed in accordance therewith. To the extent that
the limitation contained in this Section 2(e) applies, the determination of whether this Warrant is exercisable (in relation
to other securities owned by the Holder together with any Affiliates and Attribution Parties) and of which portion of this Warrant is
exercisable shall be in the sole discretion of the Holder, and the submission of a Notice of Exercise shall be deemed to be the Holder’s
determination of whether this Warrant is exercisable (in relation to other securities owned by the Holder together with any Affiliates
and Attribution Parties) and of which portion of this Warrant is exercisable, in each case subject to the Beneficial Ownership Limitation,
and the Company shall have no 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 Exchange Act and the rules and
regulations promulgated thereunder. For purposes of this Section 2(e), in determining the number of outstanding Common Shares, a
Holder may rely on the number of outstanding Common Shares as reflected in (A) the Company’s most recent periodic or annual
report filed with the Commission, as the case may be, (B) a more recent public announcement by the Company or (C) a more recent
written notice by the Company or the Transfer Agent setting forth the number of Common Shares outstanding.  Upon the written or oral
request of a Holder, the Company shall within one Trading Day confirm orally and in writing to the Holder 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 Company, including this Warrant, by the Holder 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 Common Shares issuable upon exercise of
this Warrant. The Holder, upon notice to the Company, may increase or decrease the Beneficial Ownership Limitation provisions of this
Section 2(e), 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 Common Shares upon exercise of this Warrant held by the Holder and the provisions of
this Section 2(e) shall continue to apply. Any increase in the Beneficial Ownership Limitation will not be effective until the
61st day after such notice is delivered to the Company. The provisions of this paragraph shall be construed and implemented
in a manner otherwise than in strict conformity with the terms of this Section 2(e) to correct this paragraph (or any portion
hereof) which 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 paragraph shall apply
to a successor holder of this Warrant.


 






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Section 3.          Certain
Adjustments.


 


a)            Share
Dividends and Splits. If the Company, at any time while this Warrant is outstanding: (i) pays a share dividend or otherwise makes
a distribution or distributions on its Common Shares or any other equity or equity equivalent securities payable in Common Shares (which,
for avoidance of doubt, shall not include any Common Shares issued by the Company upon exercise of this Warrant), (ii) subdivides
outstanding Common Shares into a larger number of shares, (iii) combines (including by way of reverse share split) outstanding Common
Shares into a smaller number of shares, or (iv) issues by reclassification of the Common Shares any shares of capital shares of the
Company, then in each case the Exercise Price shall be multiplied by a fraction of which the numerator shall be the number of Common Shares
(excluding treasury shares, if any) outstanding immediately before such event and of which the denominator shall be the number of Common
Shares outstanding immediately after such event, and the number of shares issuable upon exercise of this Warrant shall be proportionately
adjusted such that the aggregate Exercise Price of this Warrant shall remain unchanged. Any adjustment made pursuant to this Section 3(a) shall
become effective immediately after the record date for the determination of shareholders entitled to receive such dividend or distribution
and shall become effective immediately after the effective date in the case of a subdivision, combination or re-classification.


 


b)            Subsequent
Rights Offerings. In addition to any adjustments pursuant to Section 3(a) above, if at any time the Company grants, issues
or sells any Common Share Equivalents or rights to purchase shares, warrants, securities or other property pro rata to the record holders
of any class of Common Shares (the “Purchase Rights”), then the Holder will be entitled to acquire, upon the terms
applicable to such Purchase Rights, the aggregate Purchase Rights which the Holder could have acquired if the Holder had held the number
of Common Shares acquirable upon complete exercise of this Warrant (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 Purchase Rights, 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 Purchase Rights (provided, however, that, to the extent that the Holder’s right to participate
in any such Purchase Right would result in the Holder exceeding the Beneficial Ownership Limitation, then the Holder shall not be entitled
to participate in such Purchase Right to such extent (or beneficial ownership of such Common Shares as a result of such Purchase Right
to such extent) and such Purchase Right to such extent shall be held in abeyance for the Holder until such time, if ever, as its right
thereto would not result in the Holder exceeding the Beneficial Ownership Limitation).


 






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c)            Pro
Rata Distributions. During such time as this Warrant is outstanding, if the Company shall declare or make any dividend or other distribution
of its assets (or rights to acquire its assets) to holders of Common Shares, by way of return of capital or otherwise, other than cash
(including, without limitation, any distribution of shares or other securities, property or options by way of a dividend, spin off, reclassification,
corporate rearrangement, scheme of arrangement or other similar transaction) (a “Distribution”), at any time after
the issuance of this Warrant, then, in each such case, the Holder shall be entitled to participate in such Distribution to the same extent
that the Holder would have participated therein if the Holder had held the number of Common Shares acquirable upon complete exercise of
this Warrant (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 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 Distribution (provided, however, that,
to the extent that the Holder's right to participate in any such Distribution would result in the Holder exceeding the Beneficial Ownership
Limitation, then the Holder shall not be entitled to participate in such Distribution to such extent (or in the beneficial ownership of
any Common Shares as a result of such Distribution to such extent) and the portion of such Distribution shall be held in abeyance for
the benefit of the Holder until such time, if ever, as its right thereto would not result in the Holder exceeding the Beneficial Ownership
Limitation).


 






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d)            Fundamental
Transaction. If, at any time while this Warrant is outstanding, (i) the Company, directly or indirectly, in one or more related
transactions effects any merger or consolidation of the Company with or into another Person, (ii) the Company or any Subsidiary,
directly or indirectly, effects any sale, lease, license, assignment, transfer, conveyance or other disposition of all or substantially
all of its assets in one or a series of related transactions, (iii) any, direct or indirect, purchase offer, tender offer or exchange
offer (whether by the Company or another Person) is completed pursuant to which holders of Common Shares are permitted to sell, tender
or exchange their shares for other securities, cash or property and has been accepted by the holders of 50% or more of the outstanding
Common Shares, (iv) the Company, directly or indirectly, in one or more related transactions effects any reclassification, reorganization
or recapitalization of the Common Shares or any compulsory share exchange pursuant to which the Common Shares are effectively converted
into or exchanged for other securities, cash or property, or (v) the Company, directly or indirectly, in one or more related transactions
consummates a stock or share purchase agreement or other business combination (including, without limitation, a reorganization, recapitalization,
spin-off, merger or scheme of arrangement) with another Person or group of Persons whereby such other Person or group acquires more than
50% of the outstanding Common Shares (not including any Common Shares held by the other Person or other Persons making or party to, or
associated or affiliated with the other Persons making or party to, such stock or share purchase agreement or other business combination)
(each a “Fundamental Transaction”), then, upon any subsequent exercise of this Warrant, the Holder shall have the right
to receive, for each Warrant Share that would have been issuable upon such exercise immediately prior to the occurrence of such Fundamental
Transaction, at the option of the Holder (without regard to any limitation in Section 2(e) on the exercise of this Warrant),
the number of Common Shares of the successor or acquiring corporation or of the Company, if it is the surviving corporation, and any additional
consideration (the “Alternate Consideration”) receivable as a result of such Fundamental Transaction by a holder of
the number of Common Shares for which this Warrant is exercisable immediately prior to such Fundamental Transaction (without regard to
any limitation in Section 2(e) on the exercise of this Warrant). For purposes of any such exercise, the determination of the
Exercise Price shall be appropriately adjusted to apply to such Alternate Consideration based on the amount of Alternate Consideration
issuable in respect of one Common Share in such Fundamental Transaction, and the Company shall apportion the Exercise Price among the
Alternate Consideration in a reasonable manner reflecting the relative value of any different components of the Alternate Consideration.
If holders of Common Shares are given any choice as to the securities, cash or property to be received in a Fundamental Transaction, then
the Holder shall be given the same choice as to the Alternate Consideration it receives upon any exercise of this Warrant following such
Fundamental Transaction. The Company shall cause any successor entity in a Fundamental Transaction in which the Company is not the survivor
(the “Successor Entity”) to assume in writing all of the obligations of the Company under this Warrant in accordance
with the provisions of this Section 3(d) pursuant to written agreements in form and substance reasonably satisfactory to the
Holder and approved by the Holder (without unreasonable delay) prior to such Fundamental Transaction and shall, at the option of the Holder,
deliver to the Holder in exchange for this Warrant a security of the Successor Entity evidenced by a written instrument substantially
similar in form and substance to this Warrant which is exercisable for a corresponding number of shares of capital shares of such Successor
Entity (or its parent entity) equivalent to the Common Shares acquirable and receivable upon exercise of this Warrant (without regard
to any limitations on the exercise of this Warrant) prior to such Fundamental Transaction, and with an exercise price which applies the
exercise price hereunder to such capital shares (but taking into account the relative value of the Common Shares pursuant to such Fundamental
Transaction and the value of such capital shares, such number of capital shares and such exercise price being for the purpose of protecting
the economic value of this Warrant immediately prior to the consummation of such Fundamental Transaction), and which is reasonably satisfactory
in form and substance to the Holder. Upon the occurrence of any such Fundamental Transaction, the Successor Entity shall succeed to, and
be substituted for (so that from and after the date of such Fundamental Transaction, the provisions of this Warrant referring to the “Company”
shall refer instead to the Successor Entity), and may exercise every right and power of the Company and shall assume all of the obligations
of the Company under this Warrant with the same effect as if such Successor Entity had been named as the Company herein.


 






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e)            Calculations.
All calculations under this Section 3 shall be made to the nearest cent or the nearest 1/100th of a share, as the case may be. For
purposes of this Section 3, the number of Common Shares deemed to be issued and outstanding as of a given date shall be the sum of
the number of Common Shares (excluding treasury shares, if any) issued and outstanding.


 


f)            Notice
to Holder.


 


i.            Adjustment
to Exercise Price. Whenever the Exercise Price is adjusted pursuant to any provision of this Section 3, the Company shall promptly
deliver to the Holder by email a notice setting forth the Exercise Price after such adjustment and any resulting adjustment to the number
of Warrant Shares and setting forth a brief statement of the facts requiring such adjustment.


 


ii.            Notice
to Allow Exercise by Holder. If (A) the Company shall declare a dividend (or any other distribution in whatever form) on the
Common Shares, (B) the Company shall declare a special nonrecurring cash dividend on or a redemption of the Common Shares, (C) the
Company shall authorize the granting to all holders of the Common Shares rights or warrants to subscribe for or purchase any capital shares
of any class or of any rights, (D) the approval of any shareholders of the Company shall be required in connection with any reclassification
of the Common Shares, any consolidation or merger to which the Company (or any of its Subsidiaries) is a party, any sale or transfer of
all or substantially all of its assets, or any compulsory share exchange whereby the Common Shares are converted into other securities,
cash or property, or (E) the Company shall authorize the voluntary or involuntary dissolution, liquidation or winding up of the affairs
of the Company, then, in each case, the Company shall cause to be delivered by email to the Holder at its last email address as it shall
appear upon the Warrant Register of the Company, at least 20 calendar days prior to the applicable record or effective date hereinafter
specified, a notice stating (x) the date on which a record is to be taken for the purpose of such dividend, distribution, redemption,
rights or warrants, or if a record is not to be taken, the date as of which the holders of the Common Shares of record to be entitled
to such dividend, distributions, redemption, rights or warrants are to be determined or (y) the date on which such reclassification,
consolidation, merger, sale, transfer or share exchange is expected to become effective or close, and the date as of which it is expected
that holders of the Common Shares of record shall be entitled to exchange their Common Shares for securities, cash or other property deliverable
upon such reclassification, consolidation, merger, sale, transfer or share exchange; provided that the failure to deliver such notice
or any defect therein or in the delivery thereof shall not affect the validity of the corporate action required to be specified in such
notice. To the extent that any notice provided in this Warrant constitutes, or contains, material, non-public information regarding the
Company or any of the Subsidiaries, the Company shall simultaneously file such notice with the Commission pursuant to a Current Report
on Form 8-K. The Holder shall remain entitled to exercise this Warrant during the period commencing on the date of such notice to
the effective date of the event triggering such notice except as may otherwise be expressly set forth herein.


 






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g)            Voluntary
Adjustment By Company. Subject to the rules and regulations of the Trading Market, the Company may at any time during the term
of this Warrant, subject to the prior written consent of the Holder, reduce the then current Exercise Price to any amount and for any
period of time deemed appropriate by the board of directors of the Company.


 


Section 4.          Transfer
of Warrant.


 


a)            Transferability.
This Warrant and all rights hereunder (including, without limitation, any registration rights) are transferable, in whole or in part,
upon surrender of this Warrant at the principal office of the Company or its designated agent, together with a written assignment of this
Warrant substantially in the form attached hereto duly executed by the Holder or its agent or attorney and funds sufficient to pay any
transfer taxes payable upon the making of such transfer. Upon such surrender and, if required, such payment, the Company shall execute
and deliver a new Warrant or Warrants in the name of the assignee or assignees, as applicable, and in the denomination or denominations
specified in such instrument of assignment, and shall issue to the assignor a new Warrant evidencing the portion of this Warrant not so
assigned, and this Warrant shall promptly be cancelled. Notwithstanding anything herein to the contrary, the Holder shall not be required
to physically surrender this Warrant to the Company unless the Holder has assigned this Warrant in full, in which case, the Holder shall
surrender this Warrant to the Company within three (3) Trading Days of the date on which the Holder delivers an assignment form to
the Company assigning this Warrant in full. The Warrant, if properly assigned in accordance herewith, may be exercised by a new holder
for the purchase of Warrant Shares without having a new Warrant issued.


 


b)            New
Warrants. This Warrant may be divided or combined with other Warrants upon presentation hereof at the aforesaid office of the Company,
together with a written notice specifying the names and denominations in which new Warrants are to be issued, signed by the Holder or
its agent or attorney. Subject to compliance with Section 4(a), as to any transfer which may be involved in such division or combination,
the Company shall execute and deliver a new Warrant or Warrants in exchange for the Warrant or Warrants to be divided or combined in accordance
with such notice. All Warrants issued on transfers or exchanges shall be dated the initial issuance date of this Warrant and shall be
identical with this Warrant except as to the number of Warrant Shares issuable pursuant thereto.


 






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c)            Warrant
Register. The Company shall register this Warrant, upon records to be maintained by the Company for that purpose (the “Warrant
Register”), in the name of the record Holder hereof from time to time. The Company may deem and treat the registered Holder
of this Warrant as the absolute owner hereof for the purpose of any exercise hereof or any distribution to the Holder, and for all other
purposes, absent actual notice to the contrary.


 


Section 5.          Miscellaneous.


 


a)            No
Rights as Shareholder Until Exercise; No Settlement in Cash. This Warrant does not entitle the Holder to any voting rights, dividends
or other rights as a shareholder of the Company prior to the exercise hereof as set forth in Section 2(d)(i), except as expressly
set forth in Section 3. Without limiting any rights of a Holder to receive Warrant Shares on a “cashless exercise” pursuant
to Section 2(c) or to receive cash payments pursuant to Section 2(d)(i) and Section 2(d)(iv) herein, in
no event shall the Company be required to net cash settle an exercise of this Warrant.


 


b)            Loss,
Theft, Destruction or Mutilation of Warrant. The Company covenants that upon receipt by the Company of evidence reasonably satisfactory
to it of the loss, theft, destruction or mutilation of this Warrant or any share certificate relating to the Warrant Shares, and in case
of loss, theft or destruction, of indemnity or security reasonably satisfactory to it (which, in the case of the Warrant, shall not include
the posting of any bond), and upon surrender and cancellation of such Warrant or share certificate, if mutilated, the Company will make
and deliver a new Warrant or share certificate of like tenor and dated as of such cancellation, in lieu of such Warrant or share certificate.


 


c)            Saturdays,
Sundays, Holidays, etc. If the last or appointed day for the taking of any action or the expiration of any right required or
granted herein shall not be a Business Day, then such action may be taken or such right may be exercised on the next succeeding Business
Day.


 


d)            Authorized
Shares.


 


The Company covenants
that, during the period the Warrant is outstanding, it will reserve from its authorized and unissued Common Shares a sufficient number
of shares to provide for the issuance of the Warrant Shares upon the exercise of any purchase rights under this Warrant. The Company further
covenants that its issuance of this Warrant shall constitute full authority to its officers who are charged with the duty of issuing the
necessary Warrant Shares upon the exercise of the purchase rights under this Warrant. The Company will take all such reasonable action
as may be necessary to assure that such Warrant Shares may be issued as provided herein without violation of any applicable law or regulation,
or of any requirements of the Trading Market upon which the Common Shares may be listed. The Company covenants that all Warrant Shares
which may be issued upon the exercise of the purchase rights represented by this Warrant will, upon exercise of the purchase rights represented
by this Warrant and payment for such Warrant Shares in accordance herewith, be duly authorized, validly issued, fully paid and nonassessable
and free from all taxes, liens and charges created by the Company in respect of the issue thereof (other than taxes in respect of any
transfer occurring contemporaneously with such issue).


 






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Except and to the
extent as waived or consented to by the Holder, the Company shall not by any action, including, without limitation, amending its certificate
of incorporation or through any reorganization, transfer of assets, consolidation, merger, dissolution, issue or sale of securities or
any other voluntary action, avoid or seek to avoid the observance or performance of any of the terms of this Warrant, but will at all
times in good faith assist in the carrying out of all such terms and in the taking of all such actions as may be necessary or appropriate
to protect the rights of Holder as set forth in this Warrant against impairment. Without limiting the generality of the foregoing, the
Company will (i) not increase the par value of any Warrant Shares above the amount payable therefor upon such exercise immediately
prior to such increase in par value, (ii) take all such action as may be necessary or appropriate in order that the Company may validly
and legally issue fully paid and nonassessable Warrant Shares upon the exercise of this Warrant and (iii) use commercially reasonable
efforts to obtain all such authorizations, exemptions or consents from any public regulatory body having jurisdiction thereof, as may
be, necessary to enable the Company to perform its obligations under this Warrant.


 


Before taking any
action which would result in an adjustment in the number of Warrant Shares for which this Warrant is exercisable or in the Exercise Price,
the Company shall obtain all such authorizations or exemptions thereof, or consents thereto, as may be necessary from any public regulatory
body or bodies having jurisdiction thereof.


 


e)            Governing
Law. All questions concerning the construction, validity, enforcement and interpretation of this Warrant shall be governed by and
construed and enforced in accordance with the internal laws of the State of New York, without regard to the principles of conflicts of
law thereof. Each party agrees that all legal proceedings concerning the interpretations, enforcement and defense of the transactions
contemplated by this Warrant (whether brought against a party hereto or their respective affiliates, directors, officers, shareholders,
partners, members, employees or agents) shall be commenced exclusively in the state and federal courts sitting in the City of New York.
Each party hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in the City of New York, Borough
of Manhattan for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed
herein, and hereby irrevocably waives, and agrees not to assert in any suit, action or proceeding, any claim that it is not personally
subject to the jurisdiction of any such court, that such suit, action or proceeding is improper or is an inconvenient venue for such proceeding.
Each party hereby irrevocably waives personal service of process and consents to process being served in any such suit, action or proceeding
by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence of delivery) to such party at the address
in effect for notices to it under this Warrant and agrees that such service shall constitute good and sufficient service of process and
notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any other manner permitted
by law. If either party shall commence an action, suit or proceeding to enforce any provisions of this Warrant, the prevailing party in
such action, suit or proceeding shall be reimbursed by the other party for their reasonable attorneys’ fees and other costs and
expenses incurred with the investigation, preparation and prosecution of such action or proceeding.


 






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f)            Restrictions.
The Holder acknowledges that the Warrant Shares acquired upon the exercise of this Warrant, if not registered, and the Holder does not
utilize cashless exercise, will have restrictions upon resale imposed by state and federal securities laws.


 


g)            Nonwaiver
and Expenses. No course of dealing or any delay or failure to exercise any right hereunder on the part of Holder shall operate as
a waiver of such right or otherwise prejudice the Holder’s rights, powers or remedies. Without limiting any other provision of this
Warrant, if the Company willfully and knowingly fails to comply with any provision of this Warrant, which results in any material damages
to the Holder, the Company shall pay to the Holder such amounts as shall be sufficient to cover any costs and expenses including, but
not limited to, reasonable attorneys’ fees, including those of appellate proceedings, incurred by the Holder in collecting any amounts
due pursuant hereto or in otherwise enforcing any of its rights, powers or remedies hereunder.


 


h)            Notices.
Any and all notices or other communications or deliveries to be provided by the Holders hereunder including, without limitation, any Notice
of Exercise, shall be in writing and delivered personally, by e-mail, or sent by a nationally recognized overnight courier service, addressed
to the Company, at 7961 Shaffer Parkway, Suite 5, Littleton, Colorado 80127, Attention: Douglas L. Tobler, Chief Financial Officer,
email address: notices@vistagold.com, or such other email address or address as the Company may specify for such purposes by notice to
the Holders. Any and all notices or other communications or deliveries to be provided by the Company hereunder shall be in writing and
delivered personally, by e-mail, or sent by a nationally recognized overnight courier service addressed to each Holder at the e-mail address
or address of such Holder appearing on the books of the Company. Any notice or other communication or deliveries hereunder shall be deemed
given and effective on the earliest of (i) the time of transmission, if such notice or communication is delivered via e-mail at the
e-mail address set forth in this Section prior to 5:30 p.m. (New York City time) on any date, (ii) the next Trading Day
after the time of transmission, if such notice or communication is delivered via e-mail at the e-mail address set forth in this Section on
a day that is not a Trading Day or later than 5:30 p.m. (New York City time) on any Trading Day, (iii) the second Trading Day
following the date of mailing, if sent by U.S. nationally recognized overnight courier service, or (iv) upon actual receipt by the
party to whom such notice is required to be given. To the extent that any notice provided hereunder constitutes, or contains, material,
non-public information regarding the Company or any Subsidiaries, the Company shall simultaneously file such notice with the Commission
pursuant to a Current Report on Form 8-K.


 






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i)            Limitation
of Liability. No provision hereof, in the absence of any affirmative action by the Holder to exercise this Warrant to purchase Warrant
Shares, and no enumeration herein of the rights or privileges of the Holder, shall give rise to any liability of the Holder for the purchase
price of any Common Shares or as a shareholder of the Company, whether such liability is asserted by the Company or by creditors of the
Company.


 


j)            Remedies.
The Holder, in addition to being entitled to exercise all rights granted by law, including recovery of damages, will be entitled to specific
performance of its rights under this Warrant. The Company agrees that monetary damages would not be adequate compensation for any loss
incurred by reason of a breach by it of the provisions of this Warrant and hereby agrees to waive and not to assert the defense in any
action for specific performance that a remedy at law would be adequate.


 


k)            Successors
and Assigns. Subject to applicable securities laws, this Warrant and the rights and obligations evidenced hereby shall inure to the
benefit of and be binding upon the successors and permitted assigns of the Company and the successors and permitted assigns of Holder.
The provisions of this Warrant are intended to be for the benefit of any Holder from time to time of this Warrant and shall be enforceable
by the Holder or holder of Warrant Shares.


 


l)            Amendment.
This Warrant may be modified or amended or the provisions hereof waived with the written consent of the Company, on the one hand, and
the Holder, on the other hand.


 


m)            Severability.
Wherever possible, each provision of this Warrant shall be interpreted in such manner as to be effective and valid under applicable law,
but if any provision of this Warrant shall be prohibited by or invalid under applicable law, such provision shall be ineffective to the
extent of such prohibition or invalidity, without invalidating the remainder of such provisions or the remaining provisions of this Warrant.


 


n)            Headings.
The headings used in this Warrant are for the convenience of reference only and shall not, for any purpose, be deemed a part of this Warrant.


 


********************


 


(Signature Page Follows)


 






    17


     


    

 


IN WITNESS WHEREOF, the Company
has caused this Warrant to be executed by its officer thereunto duly authorized as of the date first above indicated.


 


	 	Vista Gold Corp.
	 	 
	 	 
	 	By:	 
	 	 	Name:
	 	 	Title:


 






    18


     


    

 


NOTICE OF EXERCISE


 


To:     Vista
Gold Corp.


 


(1)            The
undersigned hereby elects to purchase ________ Warrant Shares of the Company pursuant to the terms of the attached Warrant (only if exercised
in full), and tenders herewith payment of the exercise price in full, together with all applicable transfer taxes, if any.


 


(2)            Payment
shall take the form of (check applicable box):


 


 ̈  in lawful money of the United States;
or


 


 ̈  if permitted the cancellation of
such number of Warrant Shares as is necessary, in accordance with the formula set forth in subsection 2(c), to exercise this Warrant with
respect to the maximum number of Warrant Shares purchasable pursuant to the cashless exercise procedure set forth in subsection 2(c).


 


(3)            Please
issue said Warrant Shares in the name of the undersigned or in such other name as is specified below:


 


_______________________________


 


The Warrant Shares shall be delivered to the following
DWAC Account Number:


 


_______________________________


 


_______________________________


 


_______________________________


 


[SIGNATURE
OF HOLDER]


 


	Name of Investing Entity: 	 
	Signature of Authorized Signatory of Investing Entity:	 
	Name of Authorized Signatory: 	 
	Title of Authorized Signatory: 	 
	Date:	 


 






    


     


    

 


ASSIGNMENT FORM


 


(To assign the foregoing Warrant, execute this
form and supply required information. Do not use this form to purchase shares.)


 


FOR VALUE RECEIVED, the foregoing Warrant and
all rights evidenced thereby are hereby assigned to


 


	Name:	 	 
	 	(Please Print)	 
	 	 	 
	Address:	 	 
	 	(Please Print)	 
	 	 	 
	Phone Number:	 	 
	 	 	 
	Email Address:	 	 


 


Dated: _______________ __, ______


 


Holder’s Signature: ___________


 


Holder’s Address: ___________