Exhibit 4.3


 


[SERIES 1] [SERIES 2] COMMON STOCK PURCHASE
WARRANT


 


DEXTERA
SURGICAL INC.


 


	Warrant Shares: _______	Initial Exercise Date: _____, 2017


 


THIS [SERIES 1] [SERIES
2] COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, _____________ or its assigns
(the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter
set forth, at any time on or after _________, 2017 (the “Initial Exercise Date”) and on or prior to the close
of business on the [five (5) year]1 [one (1) year]2 anniversary of the Initial Exercise Date (the “Termination
Date”) but not thereafter, to subscribe for and purchase from Dextera Surgical Inc., a Delaware corporation (the “Company”),
up to ______ shares (as subject to adjustment hereunder, the “Warrant Shares”) of Common Stock. The purchase
price of one share of Common Stock under this Warrant shall be equal to the Exercise Price, as defined in Section 2(b). This Warrant
shall initially be issued and maintained in the form of a security held in book-entry form and the Depository Trust Company or
its nominee (“DTC”) shall initially be the sole registered holder of this Warrant, subject to a Holder’s
right to elect to receive a Warrant in certificated form pursuant to the terms of the Warrant Agency Agreement, in which case this
sentence shall not apply.


 


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


 


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


 


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


 


“Business
Day” means any day except any Saturday, any Sunday, any day which is a federal legal holiday in the United States or
any day on which banking institutions in the State of New York are authorized or required by law or other governmental action to
close.


 


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


 


“Common Stock”
means the common stock of the Company, par value $0.001 per share, and any other class of securities into which such securities
may hereafter be reclassified or changed.


 


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


 


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


 


 






1 Series 1 Warrant


2 Series 2 Warrant


 




    	 	1	 



     


    

 


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


 


“Registration
Statement” means the Company’s registration statement on Form S-1 (File No. 333-216625).


 


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


 


“Trading Day”
means a day on which the principal Trading Market is open for business.


 


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


 


“Transfer
Agent” means Computershare, Inc. and Computershare Trust Company, N.A., the current transfer agent of the Company, with
a mailing address of _______________ and a facsimile number of ______, and any successor transfer agent of the Company.


 


“Warrant Agency
Agreement” means that certain warrant agency agreement, dated on or about the Initial Exercise Date, between the Company
and the Warrant Agent.


 


“Warrant Agent”
means the Computershare, Inc. and Computershare Trust Company, N.A. and any successor warrant agent of the Company pursuant to
the Warrant Agency Agreement.


 


“Warrants”
means this Warrant and other Common Stock Purchase Warrants issued by the Company pursuant to the Registration Statement.


 


Section 2. Exercise.


 


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


 




    	 	2	 



     


    

 


Notwithstanding the
foregoing in this Section 2(a), a holder whose interest in this Warrant is a beneficial interest in certificate(s) representing
this Warrant held in book-entry form through DTC (or another established clearing corporation performing similar functions), shall
effect exercises made pursuant to this Section 2(a) by delivering to DTC (or such other clearing corporation, as applicable) the
appropriate instruction form for exercise, complying with the procedures to effect exercise that are required by DTC (or such other
clearing corporation, as applicable), subject to a Holder’s right to elect to receive a Warrant in certificated form pursuant
to the terms of the Warrant Agency Agreement, in which case this sentence shall not apply.


 


b) Exercise Price.
The exercise price per share of the Common Stock under this Warrant shall be [$_____]3 [$_____]4,
subject to adjustment hereunder (the “Exercise Price”).


 


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


 


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



 


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



 


 






3 Series 1 Warrant


4 Series 2 Warrant


 




    	 	3	 



     


    

 


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



 


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


 


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


 


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


 




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d) Mechanics of
Exercise.


 


i.
Delivery of Warrant Shares Upon Exercise. The Company shall cause the Warrant Shares purchased hereunder to be transmitted
by the Transfer Agent to the Holder by crediting the account of the Holder’s or its designee’s balance account with
The Depository Trust Company through its Deposit or Withdrawal at Custodian system (“DWAC”) if the Company is
then a participant in such system and either (A) there is an effective registration statement permitting the issuance of the Warrant
Shares to or resale of the Warrant Shares by the Holder or (B) this Warrant is being exercised via cashless exercise, and otherwise
by physical delivery of a certificate, registered in the Company’s share register in the name of the Holder or its designee,
for the number of Warrant Shares to which the Holder is entitled pursuant to such exercise to the address specified by the Holder
in the Notice of Exercise by the date that is the earlier of (i) the earlier of (A) three (3) Trading Days after the delivery to
the Company of the Notice of Exercise and (B) one (1) Trading Day after delivery of the aggregate Exercise Price to the Company
and (ii) the number of Trading Days comprising the Standard Settlement Period after the delivery to the Company of the Notice of
Exercise (such date, the “Warrant Share Delivery Date”). Upon delivery of the Notice of Exercise, the Holder
shall be deemed for all corporate purposes to have become the holder of record of the Warrant Shares with respect to which this
Warrant has been exercised, irrespective of the date of delivery of the Warrant Shares; provided that payment of the aggregate
Exercise Price (other than in the case of a cashless exercise) is received by the earlier of (i) three (3) Trading Days and (ii)
the number of Trading Days comprising the Standard Settlement Period after delivery of the Notice of Exercise. If the Company fails
for any reason to deliver to the Holder the Warrant Shares subject to a Notice of Exercise by the Warrant Share Delivery Date,
the Company shall pay to the Holder, in cash, as liquidated damages and not as a penalty, for each $1,000 of Warrant Shares subject
to such exercise (based on the VWAP of the Common Stock on the date of the applicable Notice of Exercise), $10 per Trading Day
for each Trading Day after such Warrant Share Delivery Date until such Warrant Shares are delivered or Holder rescinds such exercise.
The Company agrees to maintain a transfer agent that is a participant in the FAST program so long as this Warrant remains outstanding
and exercisable. As used herein, “Standard
Settlement Period” means the standard settlement period, expressed in a number of Trading Days, on the Company’s
primary Trading Market with respect to the Common Stock as in effect on the date of delivery of the Notice of Exercise.


 


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


 


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


 


iv. Compensation
for Buy-In on Failure to Timely Deliver Warrant Shares Upon Exercise. In addition to any other rights available to the Holder,
if the Company fails to cause the Transfer Agent to transmit to the Holder the Warrant Shares in accordance with the provisions
of Section 2(d)(i) above pursuant to an exercise on or before the Warrant Share Delivery Date, and if after such date the Holder
is required by its broker to purchase (in an open market transaction or otherwise) or the Holder’s brokerage firm otherwise
purchases, shares of Common Stock to deliver in satisfaction of a sale by the Holder of the Warrant Shares which the Holder anticipated
receiving upon such exercise (a “Buy-In”), then the Company shall (A) pay in cash to the Holder the amount,
if any, by which (x) the Holder’s total purchase price (including brokerage commissions, if any) for the shares of Common
Stock so purchased exceeds (y) the amount obtained by multiplying (1) the number of Warrant Shares that the Company was required
to deliver to the Holder in connection with the exercise at issue times (2) the price at which the sell order giving rise to such
purchase obligation was executed, and (B) at the option of the Holder, either reinstate the portion of the Warrant and equivalent
number of Warrant Shares for which such exercise was not honored (in which case such exercise shall be deemed rescinded) or deliver
to the Holder the number of shares of Common Stock that would have been issued had the Company timely complied with its exercise
and delivery obligations hereunder. For example, if the Holder purchases Common Stock having a total purchase price of $11,000
to cover a Buy-In with respect to an attempted exercise of shares of Common Stock with an aggregate sale price giving rise to such
purchase obligation of $10,000, under clause (A) of the immediately preceding sentence the Company shall be required to pay the
Holder $1,000. The Holder shall provide the Company written notice indicating the amounts payable to the Holder in respect of the
Buy-In and, upon request of the Company, evidence of the amount of such loss. Nothing herein shall limit a Holder’s right
to pursue any other remedies available to it hereunder, at law or in equity including, without limitation, a decree of specific
performance and/or injunctive relief with respect to the Company’s failure to timely deliver shares of Common Stock upon
exercise of the Warrant as required pursuant to the terms hereof.


 




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


 


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


 


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


 


e) Holder’s
Exercise Limitations. The Company shall not effect any exercise of this Warrant, and a Holder shall not have the right to exercise
any portion of this Warrant, pursuant to Section 2 or otherwise, to the extent that after giving effect to such issuance after
exercise as set forth on the applicable Notice of Exercise, the Holder (together with the Holder’s Affiliates, and any other
Persons acting as a group together with the Holder or any of the Holder’s Affiliates (such Persons, “Attribution
Parties”)), would beneficially own in excess of the Beneficial Ownership Limitation (as defined below). For purposes
of the foregoing sentence, the number of shares of Common Stock beneficially owned by the Holder and its Affiliates and Attribution
Parties shall include the number of shares of Common Stock issuable upon exercise of this Warrant with respect to which such determination
is being made, but shall exclude the number of shares of Common Stock which would be issuable upon (i) exercise of the remaining,
nonexercised portion of this Warrant beneficially owned by the Holder or any of its Affiliates or Attribution Parties and (ii)
exercise or conversion of the unexercised or nonconverted portion of any other securities of the Company (including, without limitation,
any other Common Stock Equivalents) subject to a limitation on conversion or exercise analogous to the limitation contained herein
beneficially owned by the Holder or any of its Affiliates or Attribution Parties. Except as set forth in the preceding sentence,
for purposes of this Section 2(e), beneficial ownership shall be calculated in accordance with Section 13(d) of the Exchange Act
and the rules and regulations promulgated thereunder, it being acknowledged by the Holder that the Company is not representing
to the Holder that such calculation is in compliance with Section 13(d) of the Exchange Act and the Holder is solely responsible
for any schedules required to be filed in accordance therewith. To the extent that the limitation contained in this Section 2(e)
applies, the determination of whether this Warrant is exercisable (in relation to other securities owned by the Holder together
with any Affiliates and Attribution Parties) and of which portion of this Warrant is exercisable shall be in the sole discretion
of the Holder, and the submission of a Notice of Exercise shall be deemed to be the Holder’s determination of whether this
Warrant is exercisable (in relation to other securities owned by the Holder together with any Affiliates and Attribution Parties)
and of which portion of this Warrant is exercisable, in each case subject to the Beneficial Ownership Limitation, and the Company
shall have no obligation to verify or confirm the accuracy of such determination. In addition, a determination as to any group
status as contemplated above shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations
promulgated thereunder. For purposes of this Section 2(e), in determining the number of outstanding shares of Common Stock, a Holder
may rely on the number of outstanding shares of Common Stock as reflected in (A) the Company’s most recent periodic or annual
report filed with the Commission, as the case may be, (B) a more recent public announcement by the Company or (C) a more recent
written notice by the Company or the Transfer Agent setting forth the number of shares of Common Stock outstanding. Upon the written
or oral request of a Holder, the Company shall within two Trading Days confirm orally and in writing 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 or its Affiliates
or Attribution Parties since the date as of which such number of outstanding shares of Common Stock was reported. The “Beneficial
Ownership Limitation” shall be 4.99% (or, upon election by a Holder prior to the issuance of any Warrants, 9.99%) of
the number of shares of the Common Stock outstanding immediately after giving effect to the issuance of shares of Common Stock
issuable upon exercise of this Warrant. The Holder, upon notice to the Company, may increase or decrease the Beneficial Ownership
Limitation provisions of this Section 2(e), provided that the Beneficial Ownership Limitation in no event exceeds 9.99% of the
number of shares of the Common Stock outstanding immediately after giving effect to the issuance of shares of Common Stock upon
exercise of this Warrant held by the Holder and the provisions of this Section 2(e) shall continue to apply. Any increase in the
Beneficial Ownership Limitation will not be effective until the 61st day after such notice is delivered to the Company.
The provisions of this paragraph shall be construed and implemented in a manner otherwise than in strict conformity with the terms
of this Section 2(e) to correct this paragraph (or any portion hereof) which may be defective or inconsistent with the intended
Beneficial Ownership Limitation herein contained or to make changes or supplements necessary or desirable to properly give effect
to such limitation. The limitations contained in this paragraph shall apply to a successor holder of this Warrant.


 




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f) [Call Provision.
Subject to the provisions of Section 2(e) and this Section 2(f), if, after the two (2) year anniversary of Initial Exercise Date,
(i) the VWAP for each of 30 consecutive Trading Days (the “Measurement Period,” which 30 consecutive Trading
Day period shall not have commenced until after the Initial Exercise Date) exceeds $____5 (subject to adjustment for
forward and reverse stock splits, recapitalizations, stock dividends and the like after the Initial Exercise Date), (ii) the average
daily volume for such Measurement Period exceeds $350,000 per Trading Day and (iii) the Holder is not in possession of any information
that constitutes, or might constitute, material non-public information which was provided by the Company, any of its Subsidiaries
or any of their officers, directors, employees, agents or Affiliates, then the Company may, within 1 Trading Day of the end of
such Measurement Period, call for cancellation of all or any portion of this Warrant for which a Notice of Exercise has not yet
been delivered (such right, a “Call”) for consideration equal to $.001 per Warrant Share. To exercise this right,
the Company must deliver to the Holder an irrevocable written notice (a “Call Notice”), indicating therein the
portion of unexercised portion of this Warrant to which such notice applies. If the conditions set forth below for such Call are
satisfied from the period from the date of the Call Notice through and including the Call Date (as defined below), then any portion
of this Warrant subject to such Call Notice for which a Notice of Exercise shall not have been received by the Call Date will be
cancelled at 6:30 p.m. (New York City time) on the tenth Trading Day after the date the Call Notice is received by the Holder (such
date and time, the “Call Date”). Any unexercised portion of this Warrant to which the Call Notice does not pertain
will be unaffected by such Call Notice. In furtherance thereof, the Company covenants and agrees that it will honor all Notices
of Exercise with respect to Warrant Shares subject to a Call Notice that are tendered through 6:30 p.m. (New York City time) on
the Call Date. The parties agree that any Notice of Exercise delivered following a Call Notice which calls less than all of the
Warrants shall first reduce to zero the number of Warrant Shares subject to such Call Notice prior to reducing the remaining Warrant
Shares available for purchase under this Warrant. For example, if (A) this Warrant then permits the Holder to acquire 100 Warrant
Shares, (B) a Call Notice pertains to 75 Warrant Shares, and (C) prior to 6:30 p.m. (New York City time) on the Call Date the Holder
tenders a Notice of Exercise in respect of 50 Warrant Shares, then (x) on the Call Date the right under this Warrant to acquire
25 Warrant Shares will be automatically cancelled, (y) the Company, in the time and manner required under this Warrant, will have
issued and delivered to the Holder 50 Warrant Shares in respect of the exercises following receipt of the Call Notice, and (z)
the Holder may, until the Termination Date, exercise this Warrant for 25 Warrant Shares (subject to adjustment as herein provided
and subject to subsequent Call Notices). Subject again to the provisions of this Section 2(f), the Company may deliver subsequent
Call Notices for any portion of this Warrant for which the Holder shall not have delivered a Notice of Exercise. Notwithstanding
anything to the contrary set forth in this Warrant, the Company may not deliver a Call Notice or require the cancellation of this
Warrant (and any such Call Notice shall be void), unless, from the beginning of the Measurement Period through the Call Date, (1)
the Company shall have honored in accordance with the terms of this Warrant all Notices of Exercise delivered by 6:30 p.m. (New
York City time) on the Call Date, and (2) the Registration Statement shall be effective as to all Warrant Shares and the prospectus
thereunder available for use by the Company for the sale of all such Warrant Shares to the Holder, and (3) the Common Stock shall
be listed or quoted for trading on the Trading Market, and (4) there is a sufficient number of authorized shares of Common Stock
for issuance of all Warrant Shares, and (5) the issuance of the shares shall not cause a breach of any provision of Section 2(e)
herein. The Company’s right to call the Warrants under this Section 2(f) shall be exercised ratably among the Holders based
on each Holder’s initial purchase of Warrants.]6


 


Section 3. Certain
Adjustments.


 


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


 


 






5
300% of Exercise Price


6 Series 1 Warrant only



 




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b) Subsequent Rights
Offerings. In addition to any adjustments pursuant to Section 3(a) above, if at any time the Company grants, issues or sells
any Common Stock Equivalents or rights to purchase stock, warrants, securities or other property pro rata to the record holders
of any class of shares 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
on exercise hereof, including without limitation, the Beneficial Ownership Limitation) immediately before the date on which a record
is taken for the grant, issuance or sale of such Purchase Rights, or, if no such record is taken, the date as of which the record
holders of shares of Common Stock are to be determined for the grant, issue or sale of such Purchase Rights (provided, however,
to the extent that the Holder’s right to participate in any such Purchase Right would result in the Holder exceeding the
Beneficial Ownership Limitation, then the Holder shall not be entitled to participate in such Purchase Right to such extent (or
beneficial ownership of such shares of Common Stock as a result of such Purchase Right to such extent) and such Purchase Right
to such extent shall be held in abeyance for the Holder until such time, if ever, as its right thereto would not result in the
Holder exceeding the Beneficial Ownership Limitation).


 


c) Pro Rata Distributions.
During such time as this Warrant is outstanding, if the Company shall declare or make any dividend or other distribution of its
assets (or rights to acquire its assets) to holders of shares of Common Stock, by way of return of capital or otherwise (including,
without limitation, any distribution of cash, stock or other securities, property or options by way of a dividend, spin off, reclassification,
corporate rearrangement, scheme of arrangement or other similar transaction) (a “Distribution”), at any time
after the issuance of this Warrant, then, in each such case, the Holder shall be entitled to participate in such Distribution to
the same extent that the Holder would have participated therein if the Holder had held the number of shares of Common Stock acquirable
upon complete exercise of this Warrant (without regard to any limitations on exercise hereof, including without limitation, the
Beneficial Ownership Limitation) immediately before the date of which a record is taken for such Distribution, or, if no such record
is taken, the date as of which the record holders of shares of Common Stock are to be determined for the participation in such
Distribution (provided, however, to the extent that the Holder’s right to participate in any such Distribution
would result in the Holder exceeding the Beneficial Ownership Limitation, then the Holder shall not be entitled to participate
in such Distribution to such extent (or in the beneficial ownership of any shares of Common Stock as a result of such Distribution
to such extent) and the portion of such Distribution shall be held in abeyance for the benefit of the Holder until such time, if
ever, as its right thereto would not result in the Holder exceeding the Beneficial Ownership Limitation. To the extent that this
Warrant has not been partially or completely exercised at the time of such Distribution, such portion of the Distribution shall
be held in abeyance for the benefit of the Holder until the Holder has exercised this Warrant.


 




    	 	8	 



     


    

 


d) Fundamental Transaction.
If, at any time while this Warrant is outstanding, (i) the Company, directly or indirectly, in one or more related transactions
effects any merger or consolidation of the Company with or into another Person, (ii) the Company, directly or indirectly, effects
any sale, lease, license, assignment, transfer, conveyance or other disposition of all or substantially all of its assets in one
or a series of related transactions, (iii) any, direct or indirect, purchase offer, tender offer or exchange offer (whether by
the Company or another Person) is completed pursuant to which holders of Common Stock are permitted to sell, tender or exchange
their shares for other securities, cash or property and has been accepted by the holders of 50% or more of the outstanding Common
Stock, (iv) the Company, directly or indirectly, in one or more related transactions effects any reclassification, reorganization
or recapitalization of the Common Stock or any compulsory share exchange pursuant to which the Common Stock is effectively converted
into or exchanged for other securities, cash or property, or (v) the Company, directly or indirectly, in one or more related transactions
consummates a stock or share purchase agreement or other business combination (including, without limitation, a reorganization,
recapitalization, spin-off or scheme of arrangement) with another Person or group of Persons whereby such other Person or group
acquires more than 50% of the outstanding shares of Common Stock (not including any shares of Common Stock held by the other Person
or other Persons making or party to, or associated or affiliated with the other Persons making or party to, such stock or share
purchase agreement or other business combination) (each a “Fundamental Transaction”), then, upon any subsequent
exercise of this Warrant, the Holder shall have the right to receive, for each Warrant Share that would have been issuable upon
such exercise immediately prior to the occurrence of such Fundamental Transaction (without regard to any limitation in Section
2(e) on the exercise of this Warrant), the number of shares of Common Stock of the successor or acquiring corporation or of the
Company, if it is the surviving corporation, and any additional consideration receivable as a result of such Fundamental Transaction
by a holder of the number of shares of Common Stock for which this Warrant is exercisable immediately prior to such Fundamental
Transaction (without regard to any limitation in Section 2(e) on the exercise of this Warrant) (collectively, the “Alternate
Consideration”). For purposes of any such exercise, the determination of the Exercise Price shall be appropriately adjusted
to apply to such Alternate Consideration based on the amount of Alternate Consideration issuable in respect of one share of Common
Stock in such Fundamental Transaction, and the Company shall apportion the Exercise Price among the Alternate Consideration in
a reasonable manner reflecting the relative value of any different components of the Alternate Consideration. If holders of Common
Stock are given any choice as to the securities, cash or property to be received in a Fundamental Transaction, then the Holder
shall be given the same choice as to the Alternate Consideration it receives upon any exercise of this Warrant following such Fundamental
Transaction. Notwithstanding anything to the contrary, in the event of a Fundamental Transaction other than one in which a Successor
Entity (as defined below) that is a publicly traded corporation whose stock is quoted or listed on a Trading Market assumes this
Warrant such that the Warrant shall be exercisable for the publicly traded common stock of such Successor Entity and only if such
Fundamental Transaction is within the Company’s control, the Company or any Successor Entity (as defined below) shall, at
the Holder’s option, exercisable at any time concurrently with, or within 30 days after, the consummation of the Fundamental
Transaction (or, if later, the date of the public announcement of the applicable Fundamental Transaction), purchase this Warrant
from the Holder by paying to the Holder an amount of cash equal to the Black Scholes Value of the remaining unexercised portion
of this Warrant on the date of the consummation of such Fundamental Transaction; provided, however, if the
Fundamental Transaction is not within the Company's control, including not approved by the Company's Board of Directors, Holder
shall have the option to require the Company or any Successor Entity to purchase its Warrant for the Black Scholes Value of the
unexercised portion of this Warrant as of the date of consummation of such Fundamental Transaction using the same type or form
of consideration (and in the same proportion) that is being offered and paid to the holders of Common Stock of the Company in connection
with the Fundamental Transaction, whether that consideration be in the form of cash, stock or any combination thereof, or whether
the holders of Common Stock are given the choice to receive from among alternative forms of consideration in connection with the
Fundamental Transaction. Any cash payment will be made by wire transfer of immediately available funds within five Business Days
of the Holder’s election (or, if later, on the effective date of the Fundamental Transaction). The payment of the Black Scholes
Value will be made by wire transfer of immediately available funds within five Business Days of the Holder’s election (or,
if later, on the effective date of the Fundamental Transaction). “Black Scholes Value” means the value of this
Warrant based on the Black and Scholes Option Pricing Model obtained from the “OV” function on Bloomberg, L.P. (“Bloomberg”)
determined as of the day of consummation of the applicable Fundamental Transaction for pricing purposes and reflecting (A) a risk-free
interest rate corresponding to the U.S. Treasury rate for a period equal to the time between the date of the public announcement
of the applicable Fundamental Transaction and the Termination Date, (B) an expected volatility equal to the greater of 100% and
the 100 day volatility obtained from the HVT function on Bloomberg as of the Trading Day immediately following the public announcement
of the applicable Fundamental Transaction, (C) the underlying price per share used in such calculation shall be the sum of the
price per share being offered in cash, if any, plus the value of any non-cash consideration, if any, being offered in such Fundamental
Transaction and (D) a remaining option time equal to the time between the date of the public announcement of the applicable Fundamental
Transaction and the Termination Date. The Company shall cause any successor entity in a Fundamental Transaction in which the Company
is not the survivor (the “Successor Entity”) to assume in writing all of the obligations of the Company under
this Warrant and the other Transaction Documents in accordance with the provisions of this Section 3(e) pursuant to written agreements
prior to such Fundamental Transaction and shall, at the option of the Holder, deliver to the Holder in exchange for this Warrant
a security of the Successor Entity evidenced by a written instrument substantially similar in form and substance to this Warrant
which is exercisable for a corresponding number of shares of capital stock of such Successor Entity (or its parent entity) 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 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 which is reasonably satisfactory in form and substance to the Holder. Upon the occurrence of any such Fundamental Transaction,
the Successor Entity shall succeed to, and be substituted for (so that from and after the date of such Fundamental Transaction,
the provisions of this Warrant 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. For the avoidance of doubt, if, at any time while this Warrant is outstanding, a Fundamental Transaction occurs, pursuant
to the terms of this Section 5(d), the Holder shall not be entitled to receive more than one of (i) the consideration receivable
as a result of such Fundamental Transaction by a holder of the number of shares of Common Stock for which this Warrant is exercisable
immediately prior to such Fundamental Transaction, (ii) an amount of cash equal to the Black Scholes Value of the remaining unconverted
portion of this Warrant on the date of the consummation of such Fundamental Transaction, or (iii) the assumption by the Successor
Entity of all of the obligations of the Company under this Warrant and the other Transaction Documents and the option to receive
a security of the Successor Entity evidenced by a written instrument substantially similar in form and substance to this Warrant.


 


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


 



    	 	9	 



     


    

 


f) Notice to Holder.


 


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


 


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


 


Section 4. Transfer
of Warrant.


 


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


 




    	 	10	 



     


    

 


b) New Warrants.
If this Warrant is not held in global form through DTC (or any successor depositary), this Warrant may be divided or combined with
other Warrants upon presentation hereof at the aforesaid office of the Company, together with a written notice specifying the names
and denominations in which new Warrants are to be issued, signed by the Holder or its agent or attorney. Subject to compliance
with Section 4(a), as to any transfer which may be involved in such division or combination, the Company shall execute and deliver
a new Warrant or Warrants in exchange for the Warrant or Warrants to be divided or combined in accordance with such notice. All
Warrants issued on transfers or exchanges shall be dated the original Initial Exercise Date and shall be identical with this Warrant
except as to the number of Warrant Shares issuable pursuant thereto.


 


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


 


Section 5. Miscellaneous.


 


a) No Rights as
Stockholder Until Exercise. This Warrant does not entitle the Holder to any voting rights, dividends or other rights as a stockholder
of the Company prior to the exercise hereof as set forth in Section 2(d)(i), except as expressly set forth in Section 3.


 


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


 


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


 


d) Authorized Shares.


 


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


 




    	 	11	 



     


    

 


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


 


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


 


e)
Governing Law. All questions concerning the construction, validity, enforcement and interpretation of this Warrant shall
be governed by and construed and enforced in accordance with the internal laws of the State of New York, without regard to the
principles of conflict of laws thereof. Each party agrees that all legal proceedings concerning the interpretation, enforcement
and defense of this Warrant shall be commenced exclusively in the state and federal courts sitting in the City of New York, Borough
of Manhattan (the “New York Courts”). Each party hereto hereby irrevocably submits to the exclusive jurisdiction
of the New York Courts 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 such New York Courts, or such New York Courts are improper or inconvenient
venue for such proceeding. Each party hereby irrevocably waives personal service of process and consents to process being served
in any such suit, action or proceeding by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence
of delivery) to such party at the address in effect for notices to it under this Agreement and agrees that such service shall constitute
good and sufficient service of process and notice thereof. Each
party hereto hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in
any legal proceeding arising out of or relating to this Warrant. If any party shall commence an action or proceeding to enforce
any provisions of this Warrant, then the prevailing party in such action or proceeding shall be reimbursed by the other party for
its attorneys’ fees and other costs and expenses incurred in the investigation, preparation and prosecution of such action
or proceeding.


 




    	 	12	 



     


    

 


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


 


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


 


h) Notices.
Any and all notices or other communications or deliveries to be provided by the Holders hereunder including, without limitation,
any Notice of Exercise, shall be in writing and delivered personally, by facsimile or e-mail, or sent by a nationally recognized
overnight courier service, addressed to the Company, at 900 Saginaw Drive, Redwood City, California 94063, Attention: ________,
facsimile number: _________, email address: _______________, or such other facsimile number, email address or address as the Company
may specify for such purposes by notice to the Holders. Any and all notices or other communications or deliveries to be provided
by the Company hereunder shall be in writing and delivered personally, by facsimile or e-mail, or sent by a nationally recognized
overnight courier service addressed to each Holder at the facsimile number, e-mail address or address of such Holder appearing
on the books of the Company, or if no such facsimile number, e-mail address or address appears on the books of the Company. Any
notice or other communication or deliveries hereunder shall be deemed given and effective on the earliest of (i) the date of transmission,
if such notice or communication is delivered via facsimile at the facsimile number or via e-mail at the e-mail address set forth
in this Section prior to 5:30 p.m. (New York City time) on any date, (ii) the next Trading Day after the date of transmission,
if such notice or communication is delivered via facsimile at the facsimile number or via e-mail at the e-mail address set forth
in this Section on a day that is not a Trading Day or later than 5:30 p.m. (New York City time) on any Trading Day, (iii) the second
Trading Day following the date of mailing, if sent by U.S. nationally recognized overnight courier service, or (iv) upon actual
receipt by the party to whom such notice is required to be given.


 


i) Warrant Agency
Agreement. If this Warrant is held in global form through DTC (or any successor depositary), this Warrant is issued subject
to the Warrant Agency Agreement. To the extent any provision of this Warrant conflicts with the express provisions of the Warrant
Agency Agreement, the provisions of this Warrant shall govern and be controlling.


 


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


 


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


 




    	 	13	 



     


    

 


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


 


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


 


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


 


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


 


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


 


(Signature Page Follows)


 




    	 	14	 



     


    

 


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


 


	 	DEXTERA SURGICAL INC.
	 	 	 
	 	By:	
	 	Name:	
	 	Title:	 


 




    	 	15	 



     


    

 


NOTICE OF EXERCISE


 


To:
Dextera Surgical Inc.


 


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


 


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


 


 ̈
in lawful money of the United States; or


 


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




 


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


 


	 	 	 


 


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


 


	 	 	 
	 	 	 
	 	 	 
	 	 	 
	 	 	 


 


[SIGNATURE
OF HOLDER]


 


	Name of 

Investing

 Entity:	 


 


	Signature of Authorized

 Signatory of Investing 

Entity:	 


 


	Name of 

Authorized

 Signatory:	 


 


	Title of 

Authorized

Signatory:	 


 


	Date:	 


 




    	 	16	 



     


    

 


EXHIBIT B


 


ASSIGNMENT FORM


 


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


 


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


 


	Name:	 	 
	 	 	(Please Print)
	 	 	 
	Address:	 	 
	 	 	(Please Print)
	 	 	 
	Phone Number:	 	 
	 	 	 
	Email Address:	 	 
	 	 	 
	Dated: _______________ __, ______	 	 
	 	 	 	 
	Holder’s Signature:	 	 	 
	 	 	 	 
	Holder’s Address:	 	 	 


 




    	 	17