Document:

Exhibit
4.2

 

NEITHER
THE ISSUANCE AND SALE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE
HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT
BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED (I) IN THE ABSENCE OF (A) AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES
UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR (B) AN OPINION OF COUNSEL TO THE HOLDER (IF REQUESTED BY THE COMPANY), IN A FORM
REASONABLY ACCEPTABLE TO THE COMPANY, THAT REGISTRATION IS NOT REQUIRED UNDER SAID ACT OR (II) UNLESS SOLD OR ELIGIBLE TO BE SOLD
PURSUANT TO RULE 144 OR RULE 144A UNDER SAID ACT. NOTWITHSTANDING THE FOREGOING, THE SECURITIES MAY BE PLEDGED IN CONNECTION WITH
A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN OR FINANCING ARRANGEMENT SECURED BY THE SECURITIES. THE NUMBER OF SHARES OF COMMON STOCK
ISSUABLE UPON EXERCISE OF THIS WARRANT MAY BE LESS THAN THE AMOUNTS SET FORTH ON THE FACE HEREOF PURSUANT TO SECTION 1(a)
OF THIS WARRANT.

 

Sigma
Labs, Inc.

 

Form
Of Warrant To Purchase Common Stock

 

Warrant
No.:

 

Date
of Issuance: January 8, 2021 (“Issuance Date”)

 

Sigma
Labs, Inc., a Nevada corporation (the “Company”), hereby certifies that, for good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged, ___________, the
registered holder hereof or its permitted assigns (the “Holder”), is entitled, subject to the terms set forth
below, to purchase from the Company, at the Exercise Price (as defined below) then in effect, upon exercise of this Warrant to
Purchase Common Stock (including any Warrants to Purchase Common Stock issued in exchange, transfer or replacement hereof, the
“Warrant”), at any time or times on or after six month and one day anniversary of the Issuance Date (the “Initial
Exercisability Date”), but not after 11:59 p.m., New York time, on the Expiration Date (as defined below), _________________
(subject to adjustment as provided herein) fully paid and non-assessable shares of Common Stock (as defined below) (the “Warrant
Shares”, and such aggregate number of Warrant Shares issuable hereunder as of any time of determination, the “Warrant
Number”). Except as otherwise defined herein, capitalized terms in this Warrant shall have the meanings set forth in
Section 19. This Warrant is one of the Warrants to Purchase Common Stock (the “Additional Warrants”) issued
pursuant to those certain letter agreements, dated as of January 8, 2021 (the “Waiver Date”), each by and among
the Company and a holder of certain outstanding Warrants to Purchase Common Stock of the Company (the “Holders”).

 

    	 

     

    

 

1.
EXERCISE OF WARRANT.

 

(a)
Mechanics of Exercise. Subject to the terms and conditions hereof (including, without limitation, the limitations set forth
in Section 1(f)), this Warrant may be exercised by the Holder on any day on or after the Initial Exercisability Date (an “Exercise
Date”), in whole or in part, by delivery (whether via facsimile or otherwise) of a written notice, in the form attached
hereto as Exhibit A (the “Exercise Notice”), of the Holder’s election to exercise this
Warrant. Within one (1) Trading Day following an exercise of this Warrant as aforesaid, the Holder shall deliver payment to the
Company of an amount equal to the Exercise Price in effect on the date of such exercise multiplied by the number of Warrant Shares
as to which this Warrant was so exercised (the “Aggregate Exercise Price”) in cash or via wire transfer of
immediately available funds if the Holder did not notify the Company in such Exercise Notice that such exercise was made pursuant
to a Cashless Exercise (as defined in Section 1(d)). The Holder shall not be required to deliver the original of this Warrant
in order to effect an exercise hereunder. Execution and delivery of an Exercise Notice with respect to less than all of the Warrant
Shares shall have the same effect as cancellation of the original of this Warrant and issuance of a new Warrant evidencing the
right to purchase the remaining number of Warrant Shares. Execution and delivery of an Exercise Notice for all of the then-remaining
Warrant Shares shall have the same effect as cancellation of the original of this Warrant after delivery of the Warrant Shares
in accordance with the terms hereof. On or before the first (1st) Trading Day following the date on which the Company
has received an Exercise Notice, the Company shall transmit by facsimile or electronic mail an acknowledgment of confirmation
of receipt of such Exercise Notice, in the form attached hereto as Exhibit B, to the Holder and the Company’s
transfer agent (the “Transfer Agent”), which confirmation shall constitute an instruction to the Transfer Agent
to process such Exercise Notice in accordance with the terms herein. On or before the second (2nd) Trading Day following the date
on which the Company has received such Exercise Notice (or such earlier date as required pursuant to the 1934 Act or other applicable
law, rule or regulation for the settlement of a trade of such Warrant Shares initiated on the applicable Exercise Date), the Company
shall (X) provided that the Transfer Agent is participating in The Depository Trust Company (“DTC”) Fast Automated
Securities Transfer Program and such Warrant Shares are eligible to be resold pursuant to Rule 144 or an effective registration
statement, upon the request of the Holder, credit such aggregate number of shares of Common Stock to which the Holder is entitled
pursuant to such exercise to the Holder’s or its designee’s balance account with DTC through its Deposit/Withdrawal
at Custodian system, or (Y) if the Transfer Agent is not participating in the DTC Fast Automated Securities Transfer Program or
such Warrant Shares are not eligible to be resold pursuant to Rule 144 or an effective registration statement, upon the request
of the Holder, issue and deliver (via reputable overnight courier) to the address as specified in the Exercise Notice, a certificate,
registered in the name of the Holder or its designee, for the number of shares of Common Stock to which the Holder shall be entitled
pursuant to such exercise. Upon delivery of an Exercise Notice, 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
such Warrant Shares are credited to the Holder’s DTC account or the date of delivery of the certificates evidencing such
Warrant Shares (as the case may be). If this Warrant is submitted in connection with any exercise pursuant to this Section 1(a)
and the number of Warrant Shares represented by this Warrant submitted for exercise is greater than the number of Warrant Shares
being acquired upon an exercise and upon surrender of this Warrant to the Company by the Holder, then, at the request of the Holder,
the Company shall as soon as practicable and in no event later than two (2) Business Days after any exercise and at its own expense,
issue and deliver to the Holder (or its designee) a new Warrant (in accordance with Section 7(d)) representing the right to purchase
the number of Warrant Shares purchasable immediately prior to such exercise under this Warrant, less the number of Warrant Shares
with respect to which this Warrant is exercised. No fractional shares of Common Stock are to be issued upon the exercise of this
Warrant, but rather the number of shares of Common Stock to be issued shall be rounded up to the nearest whole number. The Company
shall pay any and all transfer, stamp, issuance and similar taxes, costs and expenses (including, without limitation, fees and
expenses of the Transfer Agent) that may be payable with respect to the issuance and delivery of Warrant Shares upon exercise
of this Warrant. Notwithstanding the foregoing, except in the case where an exercise of this Warrant is validly made pursuant
to a Cashless Exercise, the Company’s failure to deliver Warrant Shares to the Holder on or prior to the later of (i) two
(2) Trading Days after receipt of the applicable Exercise Notice (or such earlier date as required pursuant to the 1934 Act or
other applicable law, rule or regulation for the settlement of a trade of such Warrant Shares initiated on the applicable Exercise
Date) and (ii) one (1) Trading Day after the Company’s receipt of the Aggregate Exercise Price (or valid notice of a Cashless
Exercise) (such later date, the “Share Delivery Date”) shall not be deemed to be a breach of this Warrant.
From the Issuance Date through and including the Expiration Date, the Company shall maintain a transfer agent that participates
in the DTC’s Fast Automated Securities Transfer Program. For the avoidance of doubt, no ink original Exercise Notices, other
notices or medallion guarantees will be required by the Holder to exercise this Warrant or for the Holder take any other action
in connection herewith.

 

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(b)
Exercise Price. For purposes of this Warrant, “Exercise Price” means 115% of the closing price per share
of Common Stock on the Issuance Date, subject to adjustment as provided herein.

 

(c)
Company’s Failure to Timely Deliver Securities. If the Company shall fail, for any reason or for no reason, on or
prior to the Share Delivery Date, either (I) if the Transfer Agent is not participating in the DTC Fast Automated Securities Transfer
Program or such Warrant Shares are not eligible to be resold pursuant to Rule 144 or an effective registration statement, to issue
and deliver to the Holder (or its designee) a certificate for the number of Warrant Shares to which the Holder is entitled and
register such Warrant Shares on the Company’s share register or, if the Transfer Agent is participating in the DTC Fast
Automated Securities Transfer Program and such Warrant Shares are eligible to be resold pursuant to Rule 144 or an effective registration
statement, to credit the balance account of the Holder or the Holder’s designee with DTC for such number of Warrant Shares
to which the Holder is entitled upon the Holder’s exercise of this Warrant (as the case may be) or (II) if a registration
statement (each, a “Registration Statement”) covering the resale of the Warrant Shares that are the subject
of the Exercise Notice (the “Unavailable Warrant Shares”) is not available for the resale of such Unavailable
Warrant Shares (solely to the extent such Unavailable Warrant Shares were ever available pursuant to such Registration Statement)
and the Company fails to promptly (x) so notify the Holder and (y) deliver the Warrant Shares electronically without any restrictive
legend by crediting such aggregate number of Warrant Shares to which the Holder is entitled pursuant to such exercise to the Holder’s
or its designee’s balance account with DTC through its Deposit/Withdrawal At Custodian system (the event described in the
immediately foregoing clause (II) is hereinafter referred as a “Notice Failure” and together with the event
described in clause (I) above, a “Delivery Failure”), then, in addition to all other remedies available to
the Holder, (X) the Company shall pay in cash to the Holder on each day after the Share Delivery Date and during such Delivery
Failure an amount equal to 2% of the product of (A) the sum of the number of shares of Common Stock not issued to the Holder on
or prior to the Share Delivery Date and to which the Holder is entitled, multiplied by (B) any trading price of the Common Stock
selected by the Holder in writing as in effect at any time during the period beginning on the applicable Exercise Date and ending
on the applicable Share Delivery Date, and (Y) the Holder, upon written notice to the Company, may void its Exercise Notice with
respect to, and retain or have returned, as the case may be, any portion of this Warrant that has not been exercised pursuant
to such Exercise Notice; provided that the voiding of an Exercise Notice shall not affect the Company’s obligations to make
any payments which have accrued prior to the date of such notice pursuant to this Section 1(c) or otherwise. In addition to the
foregoing, if on or prior to the Share Delivery Date either (I) the Transfer Agent is not participating in the DTC Fast Automated
Securities Transfer Program or such Warrant Shares are not eligible to be resold pursuant to Rule 144 or an effective registration
statement, the Company shall fail to issue and deliver to the Holder (or its designee) a certificate and register such shares
of Common Stock on the Company’s share register or, if the Transfer Agent is participating in the DTC Fast Automated Securities
Transfer Program and such Warrant Shares are eligible to be resold pursuant to Rule 144 or an effective registration statement,
the Transfer Agent shall fail to credit the balance account of the Holder or the Holder’s designee with DTC for the number
of shares of Common Stock to which the Holder is entitled upon the Holder’s exercise hereunder or pursuant to the Company’s
obligation pursuant to clause (ii) below or (II) a Notice Failure occurs, and if on or after such Share Delivery Date the Holder
purchases (in an open market transaction or otherwise) shares of Common Stock corresponding to all or any portion of the number
of shares of Common Stock issuable upon such exercise that the Holder is entitled to receive from the Company and has not received
from the Company in connection with such Delivery Failure or Notice Failure, as applicable (a “Buy-In”), then,
in addition to all other remedies available to the Holder, the Company shall, within two (2) Business Days after the Holder’s
request and in the Holder’s discretion, either (i) pay cash to the Holder in an amount equal to the Holder’s total
purchase price (including brokerage commissions and other out-of-pocket expenses, if any) for the shares of Common Stock so purchased
(including, without limitation, by any other Person in respect, or on behalf, of the Holder) (the “Buy-In Price”),
at which point the Company’s obligation to so issue and deliver such certificate (and to issue such shares of Common Stock)
or credit the balance account of such Holder or such Holder’s designee, as applicable, with DTC for the number of Warrant
Shares to which the Holder is entitled upon the Holder’s exercise hereunder (as the case may be) (and to issue such Warrant
Shares) shall terminate, or (ii) promptly honor its obligation to so issue and deliver to the Holder a certificate or certificates
representing such Warrant Shares or credit the balance account of such Holder or such Holder’s designee, as applicable,
with DTC for the number of Warrant Shares to which the Holder is entitled upon the Holder’s exercise hereunder (as the case
may be) and pay cash to the Holder in an amount equal to the excess (if any) of the Buy-In Price over the product of (A) such
number of Warrant Shares multiplied by (B) the lowest Closing Sale Price of the Common Stock on any Trading Day during the period
commencing on the date of the applicable Exercise Notice and ending on the date of such issuance and payment under this clause
(ii) (the “Buy-In Payment Amount”). Nothing shall limit the 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 certificates representing shares of Common Stock (or to electronically
deliver such shares of Common Stock) upon the exercise of this Warrant as required pursuant to the terms hereof. While this Warrant
is outstanding, the Company shall cause its transfer agent to participate in the DTC Fast Automated Securities Transfer Program.
In addition to the foregoing rights, (i) if the Company fails to deliver the applicable number of Warrant Shares upon an exercise
pursuant to Section 1 by the applicable Share Delivery Date, then the Holder shall have the right to rescind such exercise in
whole or in part and retain and/or have the Company return, as the case may be, any portion of this Warrant that has not been
exercised pursuant to such Exercise Notice; provided that the rescission of an exercise shall not affect the Company’s obligation
to make any payments that have accrued prior to the date of such notice pursuant to this Section 1(c) or otherwise, and (ii) if
a registration statement covering the issuance or resale of the Warrant Shares that are subject to an Exercise Notice is not available
for the issuance or resale, as applicable, of such Warrant Shares and the Holder has submitted an Exercise Notice prior to receiving
notice of the non-availability of such registration statement and the Company has not already delivered the Warrant Shares underlying
such Exercise Notice electronically without any restrictive legend by crediting such aggregate number of Warrant Shares to which
the Holder is entitled pursuant to such exercise to the Holder’s or its designee’s balance account with DTC through
its Deposit / Withdrawal At Custodian system, the Holder shall have the option, by delivery of notice to the Company, to (x) rescind
such Exercise Notice in whole or in part and retain or have returned, as the case may be, any portion of this Warrant that has
not been exercised pursuant to such Exercise Notice; provided that the rescission of an Exercise Notice shall not affect the Company’s
obligation to make any payments that have accrued prior to the date of such notice pursuant to this Section 1(c) or otherwise,
and/or (y) switch some or all of such Exercise Notice from a cash exercise to a Cashless Exercise.

 

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(d)
Cashless Exercise. Notwithstanding anything contained herein to the contrary (other than Section 1(f) below), if at the
time of exercise hereof a Registration Statement registering the resale of all the Warrant Shares issuable hereunder (without
regard to any limitation on exercise set forth herein) is not effective (or the prospectus contained therein is not available
for use) for the resale by the Holder of all of the Warrant Shares, then the Holder may, in its sole discretion, exercise this
Warrant in whole or in part and, in lieu of making the cash payment otherwise contemplated to be made to the Company upon such
exercise in payment of the Aggregate Exercise Price, elect instead to receive upon such exercise the “Net Number”
of Warrant Shares determined according to the following formula (a “Cashless Exercise”):

 

	 	Net Number = 	(A x B) - (A x C)	 
	 	 	D	 
	 
	For purposes of the foregoing formula:

 

A=
the total number of shares with respect to which this Warrant is then being exercised.

 

B
= the quotient of (x) the sum of the VWAP of the Common Stock of each of the twenty (20) Trading Days ending at the close of business
on the Principal Market immediately prior to the time of exercise as set forth in the applicable Exercise Notice, divided by (y)
twenty (20).

 

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C
= the Exercise Price then in effect for the applicable Warrant Shares at the time of such exercise.

 

D
= as applicable: (i) the Closing Sale Price of the Common Stock on the Trading Day immediately preceding the date of the applicable
Exercise Notice if such Exercise Notice is (1) both executed and delivered pursuant to Section 1(a) hereof on a day that is not
a Trading Day or (2) both executed and delivered pursuant to Section 1(a) hereof on a Trading Day prior to the opening of “regular
trading hours” (as defined in Rule 600(b)(64) of Regulation NMS promulgated under the federal securities laws) on such Trading
Day, (ii) the Bid Price of the Common Stock as of the time of the Holder’s execution of the applicable Exercise Notice if
such Exercise Notice is executed during “regular trading hours” on a Trading Day and is delivered within two (2) hours
thereafter pursuant to Section 1(a) hereof, or (iii) the Closing Sale Price of the Common Stock on the date of the applicable
Exercise Notice if the date of such Exercise Notice is a Trading Day and such Exercise Notice is both executed and delivered pursuant
to Section 1(a) hereof after the close of “regular trading hours” on such Trading Day.

 

If
the Warrant Shares are issued in a Cashless Exercise, the parties acknowledge and agree that in accordance with Section 3(a)(9)
of the 1933 Act, the Warrant Shares take on the registered characteristics of the Warrants being exercised. For purposes of Rule
144(d) promulgated under the 1933 Act, as in effect on the Waiver Date, it is intended that the Warrant Shares issued in a Cashless
Exercise shall be deemed to have been acquired by the Holder, and the holding period for the Warrant Shares shall be deemed to
have commenced, on the date this Warrant was originally issued pursuant to the Letter Agreement.

 

Subject
to Section 1(f), this Warrant shall be automatically exercised in a Cashless Exercise on the Expiration Date if the “Net
Number” calculated in the formula above as of the Expiration Date would result in the issuance to the Holder of any Warrant
Shares; provided, that any such Warrant Shares that, if issued to the Holder in connection with such automatic exercise, would
result in a violation of Section 1(f) would, in lieu of such automatic issuance, be held in abeyance for the benefit of the Holder
and delivered to the Holder, in whole or in part, within two (2) Trading Days of the Company’s receipt of one (or more)
written notices from the Holder specifying that such delivery of such amount of Warrant Shares specified in such notice would
no longer result in a violation of Section 1(f) above.

 

(e)
Disputes. In the case of a dispute as to the determination of the Exercise Price or the arithmetic calculation of the number
of Warrant Shares to be issued pursuant to the terms hereof, the Company shall promptly issue to the Holder the number of Warrant
Shares that are not disputed and resolve such dispute in accordance with Section 15.

 

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(f)
Limitations on Exercises. The Company shall not effect the exercise of any portion of this Warrant, and the Holder shall
not have the right to exercise any portion of this Warrant, pursuant to the terms and conditions of this Warrant and any such
exercise shall be null and void and treated as if never made, to the extent that after giving effect to such exercise, the Holder
together with the other Attribution Parties collectively would beneficially own in excess of 4.99% (the “Maximum Percentage”)
of the shares of Common Stock outstanding immediately after giving effect to such exercise. For purposes of the foregoing sentence,
the aggregate number of shares of Common Stock beneficially owned by the Holder and the other Attribution Parties shall include
the number of shares of Common Stock held by the Holder and all other Attribution Parties plus the number of shares of Common
Stock issuable upon exercise of this Warrant with respect to which the determination of such sentence is being made, but shall
exclude shares of Common Stock which would be issuable upon (A) exercise of the remaining, unexercised portion of this Warrant
beneficially owned by the Holder or any of the other Attribution Parties and (B) exercise or conversion of the unexercised or
unconverted portion of any other securities of the Company (including, without limitation, any convertible notes or convertible
preferred stock or warrants, including other Additional Warrants) beneficially owned by the Holder or any other Attribution Party
subject to a limitation on conversion or exercise analogous to the limitation contained in this Section 1(f). For purposes of
this Section 1(f), beneficial ownership shall be calculated in accordance with Section 13(d) of the 1934 Act. For purposes of
determining the number of outstanding shares of Common Stock the Holder may acquire upon the exercise of this Warrant without
exceeding the Maximum Percentage, the Holder may rely on the number of outstanding shares of Common Stock as reflected in (x)
the Company’s most recent Annual Report on Form 10-K, Quarterly Report on Form 10-Q, Current Report on Form 8-K or other
public filing with the SEC, as the case may be, (y) a more recent public announcement by the Company or (z) any other written
notice by the Company or the Transfer Agent, if any, setting forth the number of shares of Common Stock outstanding (the “Reported
Outstanding Share Number”). If the Company receives an Exercise Notice from the Holder at a time when the actual number
of outstanding shares of Common Stock is less than the Reported Outstanding Share Number, the Company shall (i) notify the Holder
in writing of the number of shares of Common Stock then outstanding and, to the extent that such Exercise Notice would otherwise
cause the Holder’s beneficial ownership, as determined pursuant to this Section 1(f), to exceed the Maximum Percentage,
the Holder must notify the Company of a reduced number of Warrant Shares to be acquired pursuant to such Exercise Notice (the
number of shares by which such purchase is reduced, the “Reduction Shares”) and (ii) as soon as reasonably
practicable, the Company shall return to the Holder any exercise price paid by the Holder for the Reduction Shares. For any reason
at any time, upon the written or oral request of the Holder, the Company shall within one (1) Business Day confirm orally and
in writing or by electronic mail to the Holder the number of shares of Common Stock then outstanding. In any case, the number
of outstanding shares of Common Stock shall be determined after giving effect to the conversion or exercise of securities of the
Company, including this Warrant, by the Holder and any other Attribution Party since the date as of which the Reported Outstanding
Share Number was reported. In the event that the issuance of shares of Common Stock to the Holder upon exercise of this Warrant
results in the Holder and the other Attribution Parties being deemed to beneficially own, in the aggregate, more than the Maximum
Percentage of the number of outstanding shares of Common Stock (as determined under Section 13(d) of the 1934 Act), the number
of shares so issued by which the Holder’s and the other Attribution Parties’ aggregate beneficial ownership exceeds
the Maximum Percentage (the “Excess Shares”) shall be deemed null and void and shall be cancelled ab initio,
and the Holder shall not have the power to vote or to transfer the Excess Shares. As soon as reasonably practicable after the
issuance of the Excess Shares has been deemed null and void, the Company shall return to the Holder the exercise price paid by
the Holder for the Excess Shares. Upon delivery of a written notice to the Company, the Holder may from time to time increase
(with such increase not effective until the sixty-first (61st) day after delivery of such notice) or decrease the Maximum
Percentage to any other percentage not in excess of 9.99% as specified in such notice; provided that (i) any such increase in
the Maximum Percentage will not be effective until the sixty-first (61st) day after such notice is delivered to the
Company and (ii) any such increase or decrease will apply only to the Holder and the other Attribution Parties and not to any
other holder of Additional Warrants that is not an Attribution Party of the Holder. For purposes of clarity, the shares of Common
Stock issuable pursuant to the terms of this Warrant in excess of the Maximum Percentage shall not be deemed to be beneficially
owned by the Holder for any purpose including for purposes of Section 13(d) or Rule 16a-1(a)(1) of the 1934 Act. No prior inability
to exercise this Warrant pursuant to this paragraph shall have any effect on the applicability of the provisions of this paragraph
with respect to any subsequent determination of exercisability. The provisions of this paragraph shall be construed and implemented
in a manner otherwise than in strict conformity with the terms of this Section 1(f) to the extent necessary to correct this paragraph
or any portion of this paragraph which may be defective or inconsistent with the intended beneficial ownership limitation contained
in this Section 1(f) or to make changes or supplements necessary or desirable to properly give effect to such limitation. The
limitation contained in this paragraph may not be waived and shall apply to a successor holder of this Warrant.

 

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(g)
Reservation of Shares.

 

(i)
Required Reserve Amount. So long as this Warrant remains outstanding, the Company shall at all times keep reserved for
issuance under this Warrant a number of shares of Common Stock at least equal to 100 of the maximum number of shares of Common
Stock as shall be necessary to satisfy the Company’s obligation to issue shares of Common Stock under the Additional Warrants
then outstanding (without regard to any limitations on exercise) (the “Required Reserve Amount”); provided
that at no time shall the number of shares of Common Stock reserved pursuant to this Section 1(g)(i) be reduced other than proportionally
in connection with any exercise or redemption of Additional Warrants or such other event covered by Section 2(a) below. The Required
Reserve Amount (including, without limitation, each increase in the number of shares so reserved) shall be allocated pro rata
among the holders of the Additional Warrants based on number of shares of Common Stock issuable upon exercise of Additional Warrants
held by each holder on the Waiver Date (without regard to any limitations on exercise) or increase in the number of reserved shares,
as the case may be (the “Authorized Share Allocation”). In the event that a holder shall sell or otherwise
transfer any of such holder’s Additional Warrants, each transferee shall be allocated a pro rata portion of such holder’s
Authorized Share Allocation. Any shares of Common Stock reserved and allocated to any Person which ceases to hold any Additional
Warrants shall be allocated to the remaining holders of Additional Warrants, pro rata based on the number of shares of Common
Stock issuable upon exercise of the Additional Warrants then held by such holders (without regard to any limitations on exercise).

 

(ii)
Insufficient Authorized Shares. If, notwithstanding Section 1(g)(i) above, and not in limitation thereof, at any time while
any of the Additional Warrants remain outstanding, the Company does not have a sufficient number of authorized and unreserved
shares of Common Stock to satisfy its obligation to reserve the Required Reserve Amount (an “Authorized Share Failure”),
then the Company shall immediately take all action necessary to increase the Company’s authorized shares of Common Stock
to an amount sufficient to allow the Company to reserve the Required Reserve Amount for all the Additional Warrants then outstanding.
Without limiting the generality of the foregoing sentence, as soon as practicable after the date of the occurrence of an Authorized
Share Failure, but in no event later than sixty (60) days after the occurrence of such Authorized Share Failure, the Company shall
hold a meeting of its shareholders for the approval of an increase in the number of authorized shares of Common Stock. In connection
with such meeting, the Company shall provide each shareholder with a proxy statement and shall use its best efforts to solicit
its shareholders’ approval of such increase in authorized shares of Common Stock and to cause its board of directors to
recommend to the shareholders that they approve such proposal. In the event that the Company is prohibited from issuing shares
of Common Stock upon an exercise of this Warrant due to the failure by the Company to have sufficient shares of Common Stock available
out of the authorized but unissued shares of Common Stock (such unavailable number of shares of Common Stock, the “Authorization
Failure Shares”), in lieu of delivering such Authorization Failure Shares to the Holder, the Company shall pay cash
in exchange for the cancellation of such portion of this Warrant exercisable into such Authorization Failure Shares at a price
equal to the sum of (i) the product of (x) such number of Authorization Failure Shares and (y) the greatest Closing Sale Price
of the Common Stock on any Trading Day during the period commencing on the date the Holder delivers the applicable Exercise Notice
with respect to such Authorization Failure Shares to the Company and ending on the date of such issuance and payment under this
Section 1(f); and (ii) to the extent the Holder purchases (in an open market transaction or otherwise) shares of Common Stock
to deliver in satisfaction of a sale by the Holder of Authorization Failure Shares, any Buy-In Payment Amount, brokerage commissions
and other out-of-pocket expenses, if any, of the Holder incurred in connection therewith. Nothing contained in this Section 1(g)
shall limit any obligations of the Company under any provision of the Letter Agreement.

 

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2.
ADJUSTMENT OF EXERCISE PRICE AND NUMBER OF
WARRANT SHARES. The Exercise Price and number of Warrant Shares issuable upon exercise of this Warrant are subject
to adjustment from time to time as set forth in this Section 2.

 

(a)
Stock Dividends and Splits. Without limiting any provision of Section 3 or Section 4, if the Company, at any time on or
after the Waiver Date, (i) pays a stock dividend on one or more classes of its then outstanding shares of Common Stock or otherwise
makes a distribution on any class of capital stock that is payable in shares of Common Stock, (ii) subdivides (by any stock split,
stock dividend, recapitalization or otherwise) one or more classes of its then outstanding shares of Common Stock into a larger
number of shares or (iii) combines (by combination, reverse stock split or otherwise) one or more classes of its then outstanding
shares of Common Stock into a smaller number of shares, then in each such case the Exercise Price shall be multiplied by a fraction
of which the numerator shall be the number of shares of Common Stock outstanding immediately before such event and of which the
denominator shall be the number of shares of Common Stock outstanding immediately after such event. Any adjustment made pursuant
to clause (i) of this paragraph shall become effective immediately after the record date for the determination of shareholders
entitled to receive such dividend or distribution, and any adjustment pursuant to clause (ii) or (iii) of this paragraph shall
become effective immediately after the effective date of such subdivision or combination. If any event requiring an adjustment
under this paragraph occurs during the period that an Exercise Price is calculated hereunder, then the calculation of such Exercise
Price shall be adjusted appropriately to reflect such event.

 

(b)
[Intentionally Omitted]

 

(c)
Number of Warrant Shares. Simultaneously with any adjustment to the Exercise Price pursuant to Section 2(a) above, the
number of Warrant Shares that may be purchased upon exercise of this Warrant shall be increased or decreased proportionately,
so that after such adjustment the aggregate Exercise Price payable hereunder for the adjusted number of Warrant Shares shall be
the same as the aggregate Exercise Price in effect immediately prior to such adjustment (without regard to any limitations on
exercise contained herein).

 

(d)
Calculations. All calculations under this Section 2 shall be made by rounding to the nearest cent or the nearest 1/100th
of a share, as applicable. The number of shares of Common Stock outstanding at any given time shall not include shares owned
or held by or for the account of the Company, and the disposition of any such shares shall be considered an issuance or sale of
Common Stock.

 

(e)
Voluntary Adjustment By Company. Subject to the rules and regulations of the Principal Market, the Company may at any time
during the term of this Warrant, with 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.

 

3.
RIGHTS UPON DISTRIBUTION OF ASSETS. In
addition to any adjustments pursuant to Section 2 above, if the Company shall declare or make any dividend or other distribution
of its assets (or rights to acquire its assets) to holders of shares of Common Stock, by way of return of capital or otherwise
(including, without limitation, any distribution of cash, stock or other securities, property, options, evidence of indebtedness
or any other assets 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 shares of Common Stock acquirable upon complete exercise of this Warrant (without
regard to any limitations or restrictions on exercise of this Warrant, including without limitation, the Maximum Percentage) immediately
before the date on which a record is taken for such Distribution, or, if no such record is taken, the date as of which the record
holders of shares of Common Stock 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 and the other Attribution
Parties exceeding the Maximum Percentage, then the Holder shall not be entitled to participate in such Distribution to the extent
of the Maximum Percentage (and shall not be entitled to beneficial ownership of such shares of Common Stock as a result of such
Distribution (and beneficial ownership) to the extent of any such excess) and the portion of such Distribution shall be held in
abeyance for the benefit of the Holder until such time or times, if ever, as its right thereto would not result in the Holder
and the other Attribution Parties exceeding the Maximum Percentage, at which time or times the Holder shall be granted such Distribution
(and any Distributions declared or made on such initial Distribution or on any subsequent Distribution held similarly in abeyance)
to the same extent as if there had been no such limitation).

 

    	8

     

    

 

4.
PURCHASE RIGHTS; FUNDAMENTAL TRANSACTIONS.

 

(a)
Purchase Rights. In addition to any adjustments pursuant to Section 2 above, if at any time the Company grants, issues
or sells any Options, Convertible Securities or rights to purchase stock, warrants, securities or other property pro rata to the
record holders of any class of Common Stock (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 shares of Common Stock acquirable upon complete exercise of this Warrant (without regard to any limitations
or restrictions on exercise of this Warrant, including without limitation, the Maximum Percentage) 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 shares of Common Stock are to be determined for the grant, issuance 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 and the other Attribution Parties exceeding the Maximum Percentage, then the Holder shall not be entitled
to participate in such Purchase Right to the extent of the Maximum Percentage (and shall not be entitled to beneficial ownership
of such shares of Common Stock as a result of such Purchase Right (and beneficial ownership) to the extent of any such excess)
and such Purchase Right to such extent shall be held in abeyance for the benefit of the Holder until such time or times, if ever,
as its right thereto would not result in the Holder and the other Attribution Parties exceeding the Maximum Percentage, at which
time or times the Holder shall be granted such right (and any Purchase Right granted, issued or sold on such initial Purchase
Right or on any subsequent Purchase Right held similarly in abeyance) to the same extent as if there had been no such limitation).

 

(b)
Fundamental Transactions. The Company shall not enter into or be party to a Fundamental Transaction unless (i) the Successor
Entity assumes in writing all of the obligations of the Company under this Warrant and the Letter Agreement in accordance with
the provisions of this Section 4(b) pursuant to written agreements in form and substance satisfactory to the Holder and approved
by the Holder prior to such Fundamental Transaction, including agreements to 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,
including, without limitation, which is exercisable for a corresponding number of shares of capital stock equivalent to the shares
of Common Stock 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 shares of capital stock (but taking into account the relative value of the shares of Common Stock pursuant to such Fundamental
Transaction and the value of such shares of capital stock, such adjustments to the number of shares of capital stock 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 (ii) the Successor Entity (including its Parent Entity) is a publicly traded corporation whose
common stock is quoted on or listed for trading on an Eligible Market. Upon the consummation of each Fundamental Transaction,
the Successor Entity shall succeed to, and be substituted for (so that from and after the date of the applicable Fundamental Transaction,
the provisions of this Warrant and the other Transaction Documents 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 and the other Transaction Documents with the same effect as if such Successor Entity had been named
as the Company herein. Upon consummation of each Fundamental Transaction, the Successor Entity shall deliver to the Holder confirmation
that there shall be issued upon exercise of this Warrant at any time after the consummation of the applicable Fundamental Transaction,
in lieu of the shares of Common Stock (or other securities, cash, assets or other property (except such items still issuable under
Sections 3 and 4(a) above, which shall continue to be receivable thereafter)) issuable upon the exercise of this Warrant prior
to the applicable Fundamental Transaction, such shares of publicly traded common stock (or its equivalent) of the Successor Entity
(including its Parent Entity) which the Holder would have been entitled to receive upon the happening of the applicable Fundamental
Transaction had this Warrant been exercised immediately prior to the applicable Fundamental Transaction (without regard to any
limitations on the exercise of this Warrant), as adjusted in accordance with the provisions of this Warrant. Notwithstanding the
foregoing, and without limiting Section 1(f) hereof, the Holder may elect, at its sole option, by delivery of written notice to
the Company to waive this Section 4(b) to permit the Fundamental Transaction without the assumption of this Warrant. In addition
to and not in substitution for any other rights hereunder, prior to the consummation of each Fundamental Transaction pursuant
to which holders of shares of Common Stock are entitled to receive securities or other assets with respect to or in exchange for
shares of Common Stock (a “Corporate Event”), the Company shall make appropriate provision to insure that the
Holder will thereafter have the right to receive upon an exercise of this Warrant at any time after the consummation of the applicable
Fundamental Transaction but prior to the Expiration Date, in lieu of the shares of the Common Stock (or other securities, cash,
assets or other property (except such items still issuable under Sections 3 and 4(a) above, which shall continue to be receivable
thereafter)) issuable upon the exercise of the Warrant prior to such Fundamental Transaction, such shares of stock, securities,
cash, assets or any other property whatsoever (including warrants or other purchase or subscription rights) which the Holder would
have been entitled to receive upon the happening of the applicable Fundamental Transaction had this Warrant been exercised immediately
prior to the applicable Fundamental Transaction (without regard to any limitations on the exercise of this Warrant). Provision
made pursuant to the preceding sentence shall be in a form and substance reasonably satisfactory to the Holder.

 

    	9

     

    

 

(c)
Application. The provisions of this Section 4 shall apply similarly and equally to successive Fundamental Transactions
and Corporate Events and shall be applied as if this Warrant (and any such subsequent warrants) were fully exercisable and without
regard to any limitations on the exercise of this Warrant (provided that the Holder shall continue to be entitled to the benefit
of the Maximum Percentage, applied however with respect to shares of capital stock registered under the 1934 Act and thereafter
receivable upon exercise of this Warrant (or any such other warrant)).

 

5.
NONCIRCUMVENTION. The Company hereby covenants
and agrees that the Company will not, by amendment of its articles of incorporation of the Company, the bylaws of the Company
or through any reorganization, transfer of assets, consolidation, merger, scheme of arrangement, dissolution, issuance 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, and will at all times in good faith carry out all the provisions of this Warrant and take all action as may be required
to protect the rights of the Holder. Without limiting the generality of the foregoing, the Company (a) shall not increase the
par value of any shares of Common Stock receivable upon the exercise of this Warrant above the Exercise Price then in effect,
and (b) shall take all such actions as may be necessary or appropriate in order that the Company may validly and legally issue
fully paid and non-assessable shares of Common Stock upon the exercise of this Warrant. Notwithstanding anything herein to the
contrary, if after the eight (8) month anniversary of the Issuance Date, the Holder is not permitted to exercise this Warrant
in full for any reason (other than pursuant to restrictions set forth in Section 1(f) hereof), the Company shall use its best
efforts to promptly remedy such failure, including, without limitation, obtaining such consents or approvals as necessary to permit
such exercise into shares of Common Stock.

 

6.
WARRANT HOLDER NOT DEEMED A SHAREHOLDER.
Except as otherwise specifically provided herein, the Holder, solely in its capacity as a holder of this Warrant, shall not be
entitled to vote or receive dividends or be deemed the holder of share capital of the Company for any purpose, nor shall anything
contained in this Warrant be construed to confer upon the Holder, solely in its capacity as the Holder of this Warrant, any of
the rights of a shareholder of the Company or any right to vote, give or withhold consent to any corporate action (whether any
reorganization, issue of stock, reclassification of stock, consolidation, merger, conveyance or otherwise), receive notice of
meetings, receive dividends or subscription rights, or otherwise, prior to the issuance to the Holder of the Warrant Shares which
it is then entitled to receive upon the due exercise of this Warrant. In addition, nothing contained in this Warrant shall be
construed as imposing any liabilities on the Holder to purchase any securities (upon exercise of this Warrant or otherwise) or
as a shareholder of the Company, whether such liabilities are asserted by the Company or by creditors of the Company. Notwithstanding
this Section 6, the Company shall provide the Holder with copies of the same notices and other information given to the shareholders
of the Company generally, contemporaneously with the giving thereof to the shareholders.

 

7.
REISSUANCE OF WARRANTS.

 

(a)
Transfer of Warrant. If this Warrant is to be transferred, the Holder shall surrender this Warrant to the Company, whereupon
the Company will forthwith issue and deliver upon the order of the Holder a new Warrant (in accordance with Section 7(d)), registered
as the Holder may request, representing the right to purchase the number of Warrant Shares being transferred by the Holder and,
if less than the total number of Warrant Shares then underlying this Warrant is being transferred, a new Warrant (in accordance
with Section 7(d)) to the Holder representing the right to purchase the number of Warrant Shares not being transferred.

 

    	10

     

    

 

(b)
Lost, Stolen or Mutilated Warrant. Upon receipt by the Company of evidence reasonably satisfactory to the Company of the
loss, theft, destruction or mutilation of this Warrant (as to which a written certification and the indemnification contemplated
below shall suffice as such evidence), and, in the case of loss, theft or destruction, of any indemnification undertaking by the
Holder to the Company in customary and reasonable form and, in the case of mutilation, upon surrender and cancellation of this
Warrant, the Company shall execute and deliver to the Holder a new Warrant (in accordance with Section 7(d)) representing the
right to purchase the Warrant Shares then underlying this Warrant.

 

(c)
Exchangeable for Multiple Warrants. This Warrant is exchangeable, upon the surrender hereof by the Holder at the principal
office of the Company, for a new Warrant or Warrants (in accordance with Section 7(d)) representing in the aggregate the right
to purchase the number of Warrant Shares then underlying this Warrant, and each such new Warrant will represent the right to purchase
such portion of such Warrant Shares as is designated by the Holder at the time of such surrender; provided, however, no warrants
for fractional shares of Common Stock shall be given.

 

(d)
Issuance of New Warrants. Whenever the Company is required to issue a new Warrant pursuant to the terms of this Warrant,
such new Warrant (i) shall be of like tenor with this Warrant, (ii) shall represent, as indicated on the face of such new Warrant,
the right to purchase the Warrant Shares then underlying this Warrant (or in the case of a new Warrant being issued pursuant to
Section 7(a) or Section 7(c), the Warrant Shares designated by the Holder which, when added to the number of shares of Common
Stock underlying the other new Warrants issued in connection with such issuance, does not exceed the number of Warrant Shares
then underlying this Warrant), (iii) shall have an issuance date, as indicated on the face of such new Warrant which is the same
as the Issuance Date, and (iv) shall have the same rights and conditions as this Warrant.

 

8.
NOTICES. Whenever notice is required
to be given under this Warrant, unless otherwise provided herein, such notice shall be given in accordance with Section 9(f) of
the Securities Purchase Agreement (as defined in the Letter Agreement). The Company shall provide the Holder with prompt written
notice of all actions taken pursuant to this Warrant (other than the issuance of shares of Common Stock upon exercise in accordance
with the terms hereof), including in reasonable detail a description of such action and the reason therefor. Without limiting
the generality of the foregoing, the Company will give written notice to the Holder (i) immediately upon each adjustment of the
Exercise Price and the number of Warrant Shares, setting forth in reasonable detail, and certifying, the calculation of such adjustment(s),
(ii) at least fifteen (15) days prior to the date on which the Company closes its books or takes a record (A) with respect to
any dividend or distribution upon the shares of Common Stock, (B) with respect to any grants, issuances or sales of any Options,
Convertible Securities or rights to purchase stock, warrants, securities or other property to holders of shares of Common Stock
or (C) for determining rights to vote with respect to any Fundamental Transaction, dissolution or liquidation, provided in each
case that such information shall be made known to the public prior to or in conjunction with such notice being provided to the
Holder, and (iii) at least ten (10) Trading Days prior to the consummation of any Fundamental Transaction. To the extent that
any notice provided hereunder constitutes, or contains, material, non-public information regarding the Company or any of its Subsidiaries
(as defined in the Letter Agreement), the Company shall simultaneously file such notice with the Securities and Exchange Commission
pursuant to a Current Report on Form 8-K. If the Company or any of its Subsidiaries provides material non-public information to
the Holder that is not simultaneously filed in a Current Report on Form 8-K and the Holder has not agreed to receive such material
non-public information, the Company hereby covenants and agrees that the Holder shall not have any duty of confidentiality to
the Company, any of its Subsidiaries or any of their respective officers, directors, employees, affiliates or agents with respect
to, or a duty to any of the foregoing not to trade on the basis of, such material non-public information. It is expressly understood
and agreed that the time of execution specified by the Holder in each Exercise Notice shall be definitive and may not be disputed
or challenged by the Company.

 

    	11

     

    

 

9.
DISCLOSURE. Upon delivery by the Company
to the Holder (or receipt by the Company from the Holder) of any notice in accordance with the terms of this Warrant, unless the
Company has in good faith determined that the matters relating to such notice do not constitute material, non-public information
relating to the Company or any of its Subsidiaries, the Company shall on or prior to 9:00 am, New York city time on the Business
Day immediately following such notice delivery date, publicly disclose such material, non-public information on a Current Report
on Form 8-K or otherwise. In the event that the Company believes that a notice contains material, non-public information relating
to the Company or any of its Subsidiaries, the Company so shall indicate to the Holder explicitly in writing in such notice (or
immediately upon receipt of notice from the Holder, as applicable), and in the absence of any such written indication in such
notice (or notification from the Company immediately upon receipt of notice from the Holder), the Holder shall be entitled to
presume that information contained in the notice does not constitute material, non-public information relating to the Company
or any of its Subsidiaries. Nothing contained in this Section 9 shall limit any obligations of the Company, or any rights of the
Holder, under the Letter Agreement.

 

10.
ABSENCE OF TRADING AND DISCLOSURE RESTRICTIONS. The Company acknowledges and agrees that the Holder is not a fiduciary
or agent of the Company and that the Holder shall have no obligation to (a) maintain the confidentiality of any information provided
by the Company or (b) refrain from trading any securities while in possession of such information in the absence of a written
non-disclosure agreement signed by an officer of the Holder that explicitly provides for such confidentiality and trading restrictions.
In the absence of such an executed, written non-disclosure agreement, the Company acknowledges that the Holder may freely trade
in any securities issued by the Company, may possess and use any information provided by the Company in connection with such trading
activity, and may disclose any such information to any third party.

 

11.
AMENDMENT AND WAIVER. Except as otherwise
provided herein, the provisions of this Warrant (other than Section 1(f)) may be amended and the Company may take any action herein
prohibited, or omit to perform any act herein required to be performed by it, only if the Company has obtained the written consent
of the Holder. No waiver shall be effective unless it is in writing and signed by an authorized representative of the waiving
party.

 

12.
SEVERABILITY. If any provision
of this Warrant is prohibited by law or otherwise determined to be invalid or unenforceable by a court of competent jurisdiction,
the provision that would otherwise be prohibited, invalid or unenforceable shall be deemed amended to apply to the broadest extent
that it would be valid and enforceable, and the invalidity or unenforceability of such provision shall not affect the validity
of the remaining provisions of this Warrant so long as this Warrant as so modified continues to express, without material change,
the original intentions of the parties as to the subject matter hereof and the prohibited nature, invalidity or unenforceability
of the provision(s) in question does not substantially impair the respective expectations or reciprocal obligations of the parties
or the practical realization of the benefits that would otherwise be conferred upon the parties. The parties will endeavor in
good faith negotiations to replace the prohibited, invalid or unenforceable provision(s) with a valid provision(s), the effect
of which comes as close as possible to that of the prohibited, invalid or unenforceable provision(s).

 

    	12

     

    

 

13.
GOVERNING LAW. This Warrant shall
be governed by and construed and enforced in accordance with, and all questions concerning the construction, validity, interpretation
and performance of this Warrant shall be governed by, the internal laws of the State of New York, without giving effect to any
choice of law or conflict of law provision or rule (whether of the State of New York or any other jurisdictions) that would cause
the application of the laws of any jurisdictions other than the State of New York. The Company 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 to the
Company at the address set forth in Section 9(f) of the Securities Purchase Agreement and agrees that such service shall constitute
good and sufficient service of process and notice thereof. The Company 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 brought in an inconvenient forum or that the venue of such suit, action or
proceeding is improper. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner
permitted by law. Nothing contained herein shall be deemed or operate to preclude the Holder from bringing suit or taking other
legal action against the Company in any other jurisdiction to collect on the Company’s obligations to the Holder, to realize
on any collateral or any other security for such obligations, or to enforce a judgment or other court ruling in favor of the Holder.
THE COMPANY HEREBY IRREVOCABLY WAIVES ANY RIGHT IT MAY HAVE TO, AND AGREES NOT TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION
OF ANY DISPUTE HEREUNDER OR IN CONNECTION WITH OR ARISING OUT OF THIS WARRANT OR ANY TRANSACTION CONTEMPLATED HEREBY.

 

14.
CONSTRUCTION; HEADINGS. This Warrant shall
be deemed to be jointly drafted by the Company and the Holder and shall not be construed against any Person as the drafter hereof.
The headings of this Warrant are for convenience of reference and shall not form part of, or affect the interpretation of, this
Warrant. Terms used in this Warrant but defined in the other Transaction Documents shall have the meanings ascribed to such terms
on the Waiver Date in such other Transaction Documents unless otherwise consented to in writing by the Holder.

 

15.
DISPUTE RESOLUTION.

 

(a)
Submission to Dispute Resolution.

 

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(i)
In the case of a dispute relating to the Exercise Price, the Closing Sale Price, the Bid Price or fair market value or the arithmetic
calculation of the number of Warrant Shares (as the case may be) (including, without limitation, a dispute relating to the determination
of any of the foregoing), the Company or the Holder (as the case may be) shall submit the dispute to the other party via facsimile
(A) if by the Company, within two (2) Business Days after the occurrence of the circumstances giving rise to such dispute or (B)
if by the Holder, at any time after the Holder learned of the circumstances giving rise to such dispute. If the Holder and the
Company are unable to promptly resolve such dispute relating to such Exercise Price, such Closing Sale Price, such Bid Price or
such fair market value or such arithmetic calculation of the number of Warrant Shares (as the case may be), at any time after
the second (2nd) Business Day following such initial notice by the Company or the Holder (as the case may be) of such
dispute to the Company or the Holder (as the case may be), then the Holder may, at its sole option, select an independent, reputable
investment bank to resolve such dispute.

 

(ii)
The Holder and the Company shall each deliver to such investment bank (A) a copy of the initial dispute submission so delivered
in accordance with the first sentence of this Section 15 and (B) written documentation supporting its position with respect to
such dispute, in each case, no later than 5:00 p.m. (New York time) by the fifth (5th) Business Day immediately following
the date on which the Holder selected such investment bank (the “Dispute Submission Deadline”) (the documents
referred to in the immediately preceding clauses (A) and (B) are collectively referred to herein as the “Required Dispute
Documentation”) (it being understood and agreed that if either the Holder or the Company fails to so deliver all of
the Required Dispute Documentation by the Dispute Submission Deadline, then the party who fails to so submit all of the Required
Dispute Documentation shall no longer be entitled to (and hereby waives its right to) deliver or submit any written documentation
or other support to such investment bank with respect to such dispute and such investment bank shall resolve such dispute based
solely on the Required Dispute Documentation that was delivered to such investment bank prior to the Dispute Submission Deadline).
Unless otherwise agreed to in writing by both the Company and the Holder or otherwise requested by such investment bank, neither
the Company nor the Holder shall be entitled to deliver or submit any written documentation or other support to such investment
bank in connection with such dispute (other than the Required Dispute Documentation).

 

(iii)
The Company and the Holder shall cause such investment bank to determine the resolution of such dispute and notify the Company
and the Holder of such resolution no later than ten (10) Business Days immediately following the Dispute Submission Deadline.
The fees and expenses of such investment bank shall be borne solely by the Company, and such investment bank’s resolution
of such dispute shall be final and binding upon all parties absent manifest error.

 

    	14

     

    

 

(b)
Miscellaneous. The Company expressly acknowledges and agrees that (i) this Section 13 constitutes an agreement to arbitrate
between the Company and the Holder (and constitutes an arbitration agreement) under the rules then in effect under § 7501,
et seq. of the New York Civil Practice Law and Rules (“CPLR”) and that the Holder is authorized to apply for
an order to compel arbitration pursuant to CPLR § 7503(a) in order to compel compliance with this Section 15, (ii) the terms
of this Warrant and the Letter Agreement shall serve as the basis for the selected investment bank’s resolution of the applicable
dispute, such investment bank shall be entitled (and is hereby expressly authorized) to make all findings, determinations and
the like that such investment bank determines are required to be made by such investment bank in connection with its resolution
of such dispute and in resolving such dispute such investment bank shall apply such findings, determinations and the like to the
terms of this Warrant and the Letter Agreement, (iii) the Holder (and only the Holder), in its sole discretion, shall have the
right to submit any dispute described in this Section 15 to any state or federal court sitting in The City of New York, Borough
of Manhattan in lieu of utilizing the procedures set forth in this Section 15 and (iv) nothing in this Section 15 shall limit
the Holder from obtaining any injunctive relief or other equitable remedies (including, without limitation, with respect to any
matters described in this Section 15).

 

16.
REMEDIES, CHARACTERIZATION, OTHER OBLIGATIONS,
BREACHES AND INJUNCTIVE RELIEF. The remedies provided in this Warrant shall be cumulative and in addition to all other remedies
available under this Warrant and the other Transaction Documents, at law or in equity (including a decree of specific performance
and/or other injunctive relief), and nothing herein shall limit the right of the Holder to pursue actual and consequential damages
for any failure by the Company to comply with the terms of this Warrant. The Company covenants to the Holder that there shall
be no characterization concerning this instrument other than as expressly provided herein. Amounts set forth or provided for herein
with respect to payments, exercises and the like (and the computation thereof) shall be the amounts to be received by the Holder
and shall not, except as expressly provided herein, be subject to any other obligation of the Company (or the performance thereof).
The Company acknowledges that a breach by it of its obligations hereunder will cause irreparable harm to the Holder and that the
remedy at law for any such breach may be inadequate. The Company therefore agrees that, in the event of any such breach or threatened
breach, the holder of this Warrant shall be entitled, in addition to all other available remedies, to specific performance and/or
temporary, preliminary and permanent injunctive or other equitable relief from any court of competent jurisdiction in any such
case without the necessity of proving actual damages and without posting a bond or other security. The Company shall provide all
information and documentation to the Holder that is requested by the Holder to enable the Holder to confirm the Company’s
compliance with the terms and conditions of this Warrant (including, without limitation, compliance with Section 2 hereof). The
issuance of shares and certificates for shares as contemplated hereby upon the exercise of this Warrant shall be made without
charge to the Holder or such shares for any issuance tax or other costs in respect thereof, provided that the Company shall not
be required to pay any tax which may be payable in respect of any transfer involved in the issuance and delivery of any certificate
in a name other than the Holder or its agent on its behalf.

 

17.
PAYMENT OF COLLECTION, ENFORCEMENT AND OTHER
COSTS. If (a) this Warrant is placed in the hands of an attorney for collection or enforcement
or is collected or enforced through any legal proceeding or the holder otherwise takes action to collect amounts due under this
Warrant or to enforce the provisions of this Warrant or (b) there occurs any bankruptcy, reorganization, receivership of the company
or other proceedings affecting company creditors’ rights and involving a claim under this Warrant, then the Company shall
pay the costs incurred by the Holder for such collection, enforcement or action or in connection with such bankruptcy, reorganization,
receivership or other proceeding, including, without limitation, attorneys’ fees and disbursements.

 

    	15

     

    

 

18.
TRANSFER. This Warrant may be offered
for sale, sold, transferred or assigned without the consent of the Company, except as may otherwise be required by Section 2(g)
of the Securities Purchase Agreement.

 

19.
CERTAIN DEFINITIONS. For purposes
of this Warrant, the following terms shall have the following meanings:

 

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

 

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

 

(c)
“Adjustment Right” means any right granted with respect to any securities issued in connection with, or with
respect to, any issuance or sale (or deemed issuance or sale in accordance with Section 2) of shares of Common Stock (other than
rights of the type described in Section 3 and 4 hereof) that could result in a decrease in the net consideration received by the
Company in connection with, or with respect to, such securities (including, without limitation, any cash settlement rights, cash
adjustment or other similar rights).

 

(d)
“Affiliate” means, with respect to any Person, any other Person that directly or indirectly controls, is controlled
by, or is under common control with, such Person, it being understood for purposes of this definition that “control”
of a Person means the power directly or indirectly either to vote 10% or more of the stock having ordinary voting power for the
election of directors of such Person or direct or cause the direction of the management and policies of such Person whether by
contract or otherwise.

 

(e)
“Attribution Parties” means, collectively, the following Persons and entities: (i) any investment vehicle,
including, any funds, feeder funds or managed accounts, currently, or from time to time after the Issuance Date, directly or indirectly
managed or advised by the Holder’s investment manager or any of its Affiliates or principals, (ii) any direct or indirect
Affiliates of the Holder or any of the foregoing, (iii) any Person acting or who could be deemed to be acting as a Group together
with the Holder or any of the foregoing and (iv) any other Persons whose beneficial ownership of the Company’s Common Stock
would or could be aggregated with the Holder’s and the other Attribution Parties for purposes of Section 13(d) of the 1934
Act. For clarity, the purpose of the foregoing is to subject collectively the Holder and all other Attribution Parties to the
Maximum Percentage.

 

    	16

     

    

 

(f)
“Bid Price” means, for any security as of the particular time of determination, the bid price for such security
on the Principal Market as reported by Bloomberg as of such time of determination, or, if the Principal Market is not the principal
securities exchange or trading market for such security, the bid price of such security on the principal securities exchange or
trading market where such security is listed or traded as reported by Bloomberg as of such time of determination, or if the foregoing
does not apply, the bid price of such security in the over-the-counter market on the electronic bulletin board for such security
as reported by Bloomberg as of such time of determination, or, if no bid price is reported for such security by Bloomberg as of
such time of determination, the average of the bid prices of any market makers for such security as reported in the “pink
sheets” by OTC Markets Group Inc. (formerly Pink Sheets LLC) as of such time of determination. If the Bid Price cannot be
calculated for a security as of the particular time of determination on any of the foregoing bases, the Bid Price of such security
as of such time of determination shall be the fair market value as mutually determined by the Company and the Holder. If the Company
and the Holder are unable to agree upon the fair market value of such security, then such dispute shall be resolved in accordance
with the procedures in Section 15. All such determinations shall be appropriately adjusted for any stock dividend, stock split,
stock combination or other similar transaction during such period.

 

(g)
“Bloomberg” means Bloomberg, L.P.

 

(h)
“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.

 

(i)
“Closing Sale Price” means, for any security as of any date, the last closing trade price for such security
on the Principal Market, as reported by Bloomberg, or, if the Principal Market begins to operate on an extended hours basis and
does not designate the closing trade price, then the last trade price of such security prior to 4:00:00 p.m., New York time, as
reported by Bloomberg, or, if the Principal Market is not the principal securities exchange or trading market for such security,
the last trade price of such security on the principal securities exchange or trading market where such security is listed or
traded as reported by Bloomberg, or if the foregoing does not apply, the last trade price of such security in the over-the-counter
market on the electronic bulletin board for such security as reported by Bloomberg, or, if no last trade price is reported for
such security by Bloomberg, the average of the ask prices of any market makers for such security as reported in the “pink
sheets” by OTC Markets Group Inc. (formerly Pink Sheets LLC). If the Closing Sale Price cannot be calculated for a security
on a particular date on any of the foregoing bases, the Closing Sale Price of such security on such date shall be the fair market
value as mutually determined by the Company and the Holder. If the Company and the Holder are unable to agree upon the fair market
value of such security, then such dispute shall be resolved in accordance with the procedures in Section 15. All such determinations
shall be appropriately adjusted for any stock dividend, stock split, stock combination or other similar transaction during such
period.

 

(j)
“Common Stock” means (i) the Company’s shares of common stock, $0.001 par value per share, and (ii) any
capital stock into which such common stock shall have been changed or any share capital resulting from a reclassification of such
common stock.

 

    	17

     

    

 

(k)
“Convertible Securities” means any stock or other security (other than Options) that is at any time and under
any circumstances, directly or indirectly, convertible into, exercisable or exchangeable for, or which otherwise entitles the
holder thereof to acquire, any shares of Common Stock.

 

(l)
“Eligible Market” means The New York Stock Exchange, the NYSE American, the Nasdaq Global Select Market, the
Nasdaq Global Market or the Principal Market.

 

(m)
“Expiration Date” means the date that is the fifth (5th) anniversary of the Initial Exercisability
Date or, if such date falls on a day other than a Trading Day or on which trading does not take place on the Principal Market
(a “Holiday”), the next date that is not a Holiday.

 

(n)
“Fundamental Transaction” means (A) that the Company shall, directly or indirectly, including through subsidiaries,
Affiliates or otherwise, in one or more related transactions, (i) consolidate or merge with or into (whether or not the Company
is the surviving corporation) another Subject Entity, or (ii) sell, assign, transfer, convey or otherwise dispose of all or substantially
all of the properties or assets of the Company or any of its “significant subsidiaries” (as defined in Rule 1-02 of
Regulation S-X) to one or more Subject Entities, or (iii) make, or allow one or more Subject Entities to make, or allow the Company
to be subject to or have its Common Stock be subject to or party to one or more Subject Entities making, a purchase, tender or
exchange offer that is accepted by the holders of at least either (x) 50% of the outstanding shares of Common Stock, (y) 50% of
the outstanding shares of Common Stock calculated as if any shares of Common Stock held by all Subject Entities making or party
to, or Affiliated with any Subject Entities making or party to, such purchase, tender or exchange offer were not outstanding;
or (z) such number of shares of Common Stock such that all Subject Entities making or party to, or Affiliated with any Subject
Entity making or party to, such purchase, tender or exchange offer, become collectively the beneficial owners (as defined in Rule
13d-3 under the 1934 Act) of at least 50% of the outstanding shares of Common Stock, or (iv) consummate a stock or share purchase
agreement or other business combination (including, without limitation, a reorganization, recapitalization, spin-off or scheme
of arrangement) with one or more Subject Entities whereby all such Subject Entities, individually or in the aggregate, acquire,
either (x) at least 50% of the outstanding shares of Common Stock, (y) at least 50% of the outstanding shares of Common Stock
calculated as if any shares of Common Stock held by all the Subject Entities making or party to, or Affiliated with any Subject
Entity making or party to, such stock purchase agreement or other business combination were not outstanding; or (z) such number
of shares of Common Stock such that the Subject Entities become collectively the beneficial owners (as defined in Rule 13d-3 under
the 1934 Act) of at least 50% of the outstanding shares of Common Stock, or (v) reorganize, recapitalize or reclassify its Common
Stock, (B) that the Company shall, directly or indirectly, including through subsidiaries, Affiliates or otherwise, in one or
more related transactions, allow any Subject Entity individually or the Subject Entities in the aggregate to be or become the
“beneficial owner” (as defined in Rule 13d-3 under the 1934 Act), directly or indirectly, whether through acquisition,
purchase, assignment, conveyance, tender, tender offer, exchange, reduction in outstanding shares of Common Stock, merger, consolidation,
business combination, reorganization, recapitalization, spin-off, scheme of arrangement, reorganization, recapitalization or reclassification
or otherwise in any manner whatsoever, of either (x) at least 50% of the aggregate ordinary voting power represented by issued
and outstanding Common Stock, (y) at least 50% of the aggregate ordinary voting power represented by issued and outstanding Common
Stock not held by all such Subject Entities as of the date of this Warrant calculated as if any shares of Common Stock held by
all such Subject Entities were not outstanding, or (z) a percentage of the aggregate ordinary voting power represented by issued
and outstanding shares of Common Stock or other equity securities of the Company sufficient to allow such Subject Entities to
effect a statutory short form merger or other transaction requiring other shareholders of the Company to surrender their shares
of Common Stock without approval of the shareholders of the Company or (C) directly or indirectly, including through subsidiaries,
Affiliates or otherwise, in one or more related transactions, the issuance of or the entering into any other instrument or transaction
structured in a manner to circumvent, or that circumvents, the intent of this definition in which case this definition shall be
construed and implemented in a manner otherwise than in strict conformity with the terms of this definition to the extent necessary
to correct this definition or any portion of this definition which may be defective or inconsistent with the intended treatment
of such instrument or transaction.

 

    	18

     

    

 

(o)
“Group” means a “group” as that term is used in Section 13(d) of the 1934 Act and as defined in
Rule 13d-5 thereunder.

 

(p)
“Options” means any rights, warrants or options to subscribe for or purchase shares of Common Stock or Convertible
Securities.

 

(q)
“Parent Entity” of a Person means an entity that, directly or indirectly, controls the applicable Person and
whose common stock or equivalent equity security is quoted or listed on an Eligible Market, or, if there is more than one such
Person or Parent Entity, the Person or Parent Entity with the largest public market capitalization as of the date of consummation
of the Fundamental Transaction.

 

(r)
“Person” means an individual, a limited liability company, a partnership, a joint venture, a corporation, a
trust, an unincorporated organization, any other entity or a government or any department or agency thereof.

 

(s)
“Principal Market” means the Nasdaq Capital Market.

 

(t)
“SEC” means the United States Securities and Exchange Commission or the successor thereto.

 

(u)
“Subject Entity” means any Person, Persons or Group or any Affiliate or associate of any such Person, Persons
or Group.

 

(v)
“Successor Entity” means the Person (or, if so elected by the Holder, the Parent Entity) formed by, resulting
from or surviving any Fundamental Transaction or the Person (or, if so elected by the Holder, the Parent Entity) with which such
Fundamental Transaction shall have been entered into.

 

    	19

     

    

 

(w)
“Trading Day” means, as applicable, (x) with respect to all price or trading volume determinations relating
to the Common Stock, any day on which the Common Stock is traded on the Principal Market, or, if the Principal Market is not the
principal trading market for the Common Stock, then on the principal securities exchange or securities market on which the Common
Stock is then traded, provided that “Trading Day” shall not include any day on which the Common Stock is scheduled
to trade on such exchange or market for less than 4.5 hours or any day that the Common Stock is suspended from trading during
the final hour of trading on such exchange or market (or if such exchange or market does not designate in advance the closing
time of trading on such exchange or market, then during the hour ending at 4:00:00 p.m., New York time) unless such day is otherwise
designated as a Trading Day in writing by the Holder or (y) with respect to all determinations other than price or trading volume
determinations relating to the Common Stock, any day on which The New York Stock Exchange (or any successor thereto) is open for
trading of securities.

 

(x)
“VWAP” means, for any security as of any date, the dollar volume-weighted average price for such security on
the Principal Market (or, if the Principal Market is not the principal trading market for such security, then on the principal
securities exchange or securities market on which such security is then traded), during the period beginning at 9:30 a.m., New
York time, and ending at 4:00 p.m., New York time, as reported by Bloomberg through its “VAP” function (set to 09:30
start time and 16:00 end time) or, if the foregoing does not apply, the dollar volume-weighted average price of such security
in the over-the-counter market on the electronic bulletin board for such security during the period beginning at 9:30 a.m., New
York time, and ending at 4:00 p.m., New York time, as reported by Bloomberg, or, if no dollar volume-weighted average price is
reported for such security by Bloomberg for such hours, the average of the highest closing bid price and the lowest closing ask
price of any of the market makers for such security as reported in the “pink sheets” by OTC Markets Group Inc. (formerly
Pink Sheets LLC). If the VWAP cannot be calculated for such security on such date on any of the foregoing bases, the VWAP of such
security on such date shall be the fair market value as mutually determined by the Company and the Holder. If the Company and
the Holder are unable to agree upon the fair market value of such security, then such dispute shall be resolved in accordance
with the procedures in Section 15. All such determinations shall be appropriately adjusted for any stock dividend, stock split,
stock combination, recapitalization or other similar transaction during such period.

 

[signature
page follows]

 

    	20

     

    

 

IN
WITNESS WHEREOF, the Company has caused this Warrant to Purchase Common Stock to be duly executed as of the Issuance Date
set out above.

 

	 	SIGMA
    LABS, INC.
	 	 	 
	 	By:	 
	 	 	Name:
	 	 	Title:

 

    	 

     

    

 

EXHIBIT
A

 

EXERCISE
NOTICE

 

TO
BE EXECUTED BY THE REGISTERED HOLDER TO EXERCISE THIS

WARRANT TO PURCHASE COMMON STOCK

 

SIGMA
LABS, INC. 

 

The
undersigned holder hereby elects to exercise the Warrant to Purchase Common Stock No. _______ (the “Warrant”)
of Sigma Labs, Inc., a Nevada corporation (the “Company”) as specified below. Capitalized terms used herein
and not otherwise defined shall have the respective meanings set forth in the Warrant.

 

1.
Form of Exercise Price. The Holder intends that payment of the Aggregate Exercise Price shall be made as:

 

	 	[  ]	a
    “Cash Exercise” with respect to _________________ Warrant Shares; and/or
	 	 	 
	 	[  ]	a
    “Cashless Exercise” with respect to _______________ Warrant Shares.

 

In
the event that the Holder has elected a Cashless Exercise with respect to some or all of the Warrant Shares to be issued pursuant
hereto, the Holder hereby represents and warrants that (i) this Exercise Notice was executed by the Holder at __________ [a.m.][p.m.]
on the date set forth below and (ii) if applicable, the Bid Price as of such time of execution of this Exercise Notice was $________.

 

2.
Payment of Exercise Price. In the event that the Holder has elected a Cash Exercise with respect to some or all of the
Warrant Shares to be issued pursuant hereto, the Holder shall pay the Aggregate Exercise Price in the sum of $___________________
to the Company in accordance with the terms of the Warrant.

 

3.
Delivery of Warrant Shares. The Company shall deliver to Holder, or its designee or agent as specified below, __________
shares of Common Stock in accordance with the terms of the Warrant. Delivery shall be made to Holder, or for its benefit, as follows:

 

[  ]
Check here if requesting delivery as a certificate to the following name and to the following address:

 

	 	Issue
    to:	 
	 	 	 
	 	 	 

 

[  ]
Check here if requesting delivery by Deposit/Withdrawal at Custodian as follows:

 

	 	DTC
    Participant:	 
	 	DTC
    Number:	 
	 	Account
    Number:	 

 

Date:
_____________ __, _____

 

__________________________

Name
of Registered Holder

 

	By:	 	 
	 	Name:
    	 
	 	Title:	 

 

	 	Tax
    ID:	 	 
	 	 	 	 
	 	Facsimile:	 	 
	 	 	 	 
	 	E-mail
    Address:	 	 

 

    	 

     

    

 

EXHIBIT
B

 

ACKNOWLEDGMENT

 

The
Company hereby acknowledges this Exercise Notice and hereby directs ______________ to issue the above indicated number of shares
of Common Stock in accordance with the Transfer Agent Instructions dated _________, 202_, from the Company and acknowledged and
agreed to by _______________.

 

	 	Sigma
    Labs, Inc. 
	 	 	 	 
	 	By:	 
	 		Name:	 
	 		Title:Exhibit
10.1

 

January
8, 2021

 

Sigma
Labs, Inc.

3900
Paseo del Sol

Santa
Fe, New Mexico 87507

Attention:
Mark Ruport

(Mark@sigmalabsinc.com)

 

	 	Re:	Form
    of Limited Waiver

 

Reference
is made to the Securities Purchase Agreement, dated as of January 27, 2020 (the “January Securities Purchase Agreement”),
between Sigma Labs, Inc., a Nevada corporation (the “Company”), the undersigned (the “Holder”)
and the other investors signatory thereto (the “Other Holders”, and together with the Holder, the “Investors”).
Reference is also made to the Securities Purchase Agreement, dated as of April 2, 2020 (the “April Securities Purchase
Agreement”), between the Company, the Holder and the Other Holders. All capitalized terms used herein and not otherwise
defined herein shall have the meanings ascribed to such terms in the January Securities Purchase Agreement.

 

Effective
as of January 28, 2020, the Holder hereby waives, in part, the first sentence of Section 2(b)(iv) of the Warrant (as defined in
the January Securities Purchase Agreement) (the “January Warrant”) of the Holder such that, with respect to
any given Subsequent Placement, the deemed aggregate consideration per share of Common Stock in such Subsequent Placement as determined
in accordance with the first sentence of Section 2(b)(iv) of the January Warrant, if applicable, shall not exceed such deemed
aggregate consideration per share of Common Stock as determined as if the following amended and restated the first sentence of
such Section 2(b)(iv):

 

If
any Option and/or Convertible Security and/or Adjustment Right is issued in connection with the issuance or sale or deemed issuance
or sale of any other securities of the Company (as determined by the Holder, the “Primary Security”, and such
Option and/or Convertible Security and/or Adjustment Right, the “Secondary Securities” and together with the
Primary Security, each a “Unit”), together comprising one integrated transaction, the aggregate consideration
per share of Common Stock with respect to such Primary Security shall be deemed to be the lower of (x) the purchase price of such
Unit, (y) if such Primary Security is an Option and/or Convertible Security, the lowest price per share for which one share of
Common Stock is at any time issuable upon the exercise or conversion of the Primary Security in accordance with Sections 2(b)(i)
or 2(b)(ii) above and (z) the lowest VWAP of the shares of Common Stock on any Trading Day during the five (5) Trading Day period
(the “Adjustment Period”) immediately following the public announcement of such Dilutive Issuance (for the
avoidance of doubt, if such public announcement is released prior to the opening of the Principal Market on a Trading Day, such
Trading Day shall be the first Trading Day in such five Trading Day period and if this Common Warrant is exercised, on any given
Exercise Date during any such Adjustment Period, solely with respect to such portion of this Common Warrant converted on such
applicable Exercise Date, such applicable Adjustment Period shall be deemed to have ended on, and included, the Trading Day immediately
prior to such Exercise Date).

 

    	 

     

    

 

Effective
as of April 2, 2020, the Holder hereby waives, in part, the first sentence of Section 2(b)(iv) of the Series A Warrant (as defined
in the April Securities Purchase Agreement) (the “April Warrant”) of the Holder such that, with respect to
any given Subsequent Placement, the deemed aggregate consideration per share of Common Stock in such Subsequent Placement as determined
in accordance with the first sentence of Section 2(b)(iv) of the April Warrant, if applicable, shall not exceed such deemed aggregate
consideration per share of Common Stock as determined as if the following amended and restated the first sentence of such Section
2(b)(iv):

 

If
any Option and/or Convertible Security and/or Adjustment Right is issued in connection with the issuance or sale or deemed issuance
or sale of any other securities of the Company (as determined by the Holder, the “Primary Security”, and such Option
and/or Convertible Security and/or Adjustment Right, the “Secondary Securities” and together with the Primary Security,
each a “Unit”), together comprising one integrated transaction, the aggregate consideration per share of Common Stock
with respect to such Primary Security shall be deemed to be the lower of (x) the purchase price of such Unit, (y) if such Primary
Security is an Option and/or Convertible Security, the lowest price per share for which one share of Common Stock is at any time
issuable upon the exercise or conversion of the Primary Security in accordance with Sections 2(b)(i) or 2(b)(ii) above and (z)
the lowest VWAP of the shares of Common Stock on any Trading Day during the five (5) Trading Day period (the “Adjustment
Period”) immediately following the public announcement of such Dilutive Issuance (for the avoidance of doubt, if such public
announcement is released prior to the opening of the Principal Market on a Trading Day, such Trading Day shall be the first Trading
Day in such five Trading Day period and if this Warrant is exercised, on any given Exercise Date during any such Adjustment Period,
solely with respect to such portion of this Warrant converted on such applicable Exercise Date, such applicable Adjustment Period
shall be deemed to have ended on, and included, the Trading Day immediately prior to such Exercise Date).

 

As
consideration for the foregoing waivers, the Company and the holder hereby agree as follows: (i) the Company hereby issues to
the Holder an additional warrant to purchase Common Stock, in the form attached hereto as Exhibit A, to acquire such aggregate
number of shares of Common Stock as set forth on the signature page of the holder attached hereto (the “Additional Warrant”,
as exercised, the “Additional Warrant Shares”) and (iv) as used in Transaction Documents (other than the Registration
Rights Agreement), the definition of (A) “Warrants” (as defined in the Securities Purchase Agreement) shall be deemed
to include the Additional Warrants, (B) “Warrant Shares” (as defined in the Securities Purchase Agreement) shall be
deemed to include the Additional Warrant Shares and (C) “Transaction Documents” (as defined in the Securities Purchase
Agreement) shall be deemed to include this letter agreement. For the avoidance of doubt, the parties hereto acknowledge and agree
that, as of the date hereof, the Exercise Price (as defined in the Warrant and the Series A Warrants, respectively) after giving
effect to this letter agreement and the closing of the Company’s underwritten public offering on January 12, 2021, shall
be $2.50 (subject to adjustment as provided in the terms of the Warrant and the Series A Warrant, as applicable).

 

    	2

     

    

 

Except
as set forth on Schedule 3(a) attached hereto, the Company hereby makes the representations and warranties to the Holder as set
forth in Section 3(a)-(j) and 3(vv) of the January Securities Purchase Agreement (as amended hereby) as if such representations
and warranties were made as of the date hereof and as of the date hereof as set forth in their entirety in this Amendment, mutatis
mutandis. Such representations and warranties to the transactions thereunder and the securities issued pursuant thereto are
hereby deemed for purposes of this letter agreement to be references to the transactions hereunder and the issuance of the securities
pursuant hereto, references therein to “Closing Date” and to “the date hereof” being deemed references
to the date of this letter agreement.

 

The
Company shall, on or before 8:30 a.m., New York City time, on or prior to January 12, 2021, file a Current Report on Form 8-K
describing the terms of the transactions contemplated hereby in the form required by the 1934 Act and attaching this letter agreement
and the form of Additional Warrant, to the extent they are required to be filed under the 1934 Act, that have not previously been
filed with the SEC by the Company (including, without limitation, this letter agreement) as exhibits to such filing (including
all attachments, the “8-K Filing”). From and after the filing of the 8-K Filing, the Company shall have disclosed
all material, non-public information (if any) provided up to such time to the Holder by the Company or any of its Subsidiaries
or any of their respective officers, directors, employees, affiliates or agents, that is not disclosed in the 8-K Filing. The
Company shall not, and shall cause its officers, directors, employees, affiliates and agents, not to, provide the Holder with
any material, nonpublic information regarding the Company from and after the filing of the 8-K Filing without the express written
consent of the Holder. To the extent that the Company delivers any material, non-public information to the Holder without the
Holder’s express prior written consent, the Company hereby covenants and agrees that the Holder shall not have any duty
of confidentiality to the Company, any of its Subsidiaries (as applicable) or any of their respective officers, directors, employees,
affiliates or agent with respect to, or a duty to the to the Company, any of its Subsidiaries (as applicable) or any of their
respective officers, directors, employees, affiliates or agent or not to trade on the basis of, such material, non-public information.
The Company shall not disclose the name of the Holder in any filing, announcement, release or otherwise, unless such disclosure
is required by law or regulation. In addition, effective upon the filing of the 8-K Filing, the Company acknowledges and agrees
that any and all confidentiality or similar obligations under any letter agreement with respect to the transactions contemplated
by this letter agreement or as otherwise disclosed in the 8-K Filing, whether written or oral, between the Company, any of its
Subsidiaries or any of their respective officers, directors, affiliates, employees or agents, on the one hand, and any of the
Holder or any of their affiliates, on the other hand, shall terminate. Neither the Company, its Subsidiaries nor the Holder shall
issue any press releases or any other public statements with respect to the transactions contemplated hereby; provided, however,
the Company shall be entitled, without the prior approval of the Holder, to make a press release or other public disclosure with
respect to such transactions (i) in substantial conformity with the 8-K Filing and contemporaneously therewith or (ii) as is required
by applicable law and regulations (provided that in the case of clause (i) the Holder shall be consulted by the Company in connection
with any such press release or other public disclosure prior to its release). Without the prior written consent of the Holder
(which may be granted or withheld in the Holder’s sole discretion), except as required by applicable law, the Company shall
not (and shall cause each of its Subsidiaries (as applicable) and affiliates to not) disclose the name of the Holder in any filing,
announcement, release or otherwise.

 

    	3

     

    

 

The
Company shall reimburse Kelley Drye & Warren LLP, counsel to the Holder, on demand, a non-accountable amount of $15,000 for
its fees and expenses in connection with the structuring, documentation, negotiation of this letter.

 

For
the sake of clarity, notwithstanding the foregoing consent, each of the Transaction Documents shall remain in full force and effect
and is hereby ratified and confirmed in all respects.

 

The
obligations of the Holder under this limited waiver are several and not joint with the obligations of any Other Holder, and the
Holder shall not be responsible in any way for the performance of the obligations of any Other Holder under any other agreement
(each, an “Other Agreement”). Nothing contained herein or in any Other Agreement, and no action taken by the
Holder pursuant hereto, shall be deemed to constitute the Holder and Other Holders as a partnership, an association, a joint venture
or any other kind of entity, or create a presumption that the Holder and Other Holders are in any way acting in concert or as
a group with respect to such obligations or the transactions contemplated by this limited waiver or any Other Agreement and the
Company acknowledges that, to the best of its knowledge, the Holder and the Other Holders are not acting in concert or as a group
with respect to such obligations or the transactions contemplated by this limited waiver or any Other Agreement. The Company and
the Holder confirm that the Holder has independently participated in the negotiation of the transactions contemplated hereby with
the advice of its own counsel and advisors. The Holder shall be entitled to independently protect and enforce its rights, including,
without limitation, the rights arising out of this limited waiver, and it shall not be necessary for any Other Holder to be joined
as an additional party in any proceeding for such purpose.

 

The
Company hereby represents and warrants as of the date hereof and covenants and agrees from and after the date hereof that none
of the terms offered to any Person with respect to any consent, release, amendment, settlement or waiver relating to the terms,
conditions and transactions contemplated hereby (each a “Settlement Document”), is or will be more favorable to such
Person than those of the Holder and this letter agreement. If, and whenever on or after the date hereof, the Company enters into
a Settlement Document, then (i) the Company shall provide notice thereof to the Holder immediately following the occurrence thereof
and (ii) the terms and conditions of this letter agreement shall be, without any further action by the Holder or the Company,
automatically amended and modified in an economically and legally equivalent manner such that the Holder shall receive the benefit
of the more favorable terms and/or conditions (as the case may be) set forth in such Settlement Document, provided that upon written
notice to the Company at any time the Holder may elect not to accept the benefit of any such amended or modified term or condition,
in which event the term or condition contained in this letter agreement shall apply to the Holder as it was in effect immediately
prior to such amendment or modification as if such amendment or modification never occurred with respect to the Holder. The provisions
of this paragraph shall apply similarly and equally to each Settlement Document.

 

    	4

     

    

 

Section
9 of the Securities Purchase Agreement is hereby incorporated by reference herein, mutatis mutandis.

 

	 	HOLDER: 
	 	 
		 

 

	Aggregate Number of Additional Warrant
	Shares Issuable upon Additional Warrants
	to be Issued (without regards to any limitation on 
	exercise therein):

 

	 	 

 

	COMPANY	 
	 	 	 
	By:	 	 
	 	Mark
    Ruport, CEO	 

 

    	5

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