EXHIBIT 4.3


 


COMMON STOCK PURCHASE WARRANT


 


NEUROMETRIX,
INC.


 


	Warrant Shares: ______	Initial Exercise Date: ____ __, 2015


 


THIS 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 the date hereof (the “Initial Exercise Date”) and on or prior to the close of business on the seven
year anniversary of the Initial Exercise Date (the “Termination Date”) but not thereafter, to subscribe for
and purchase from NeuroMetrix, 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).


 


Section 1.          Definitions.


 


“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.


 


“Common Stock
Equivalents” means any securities of the Company 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.


 


“Notice of
Exercise” means the form set forth in Exhibit A-1 for Warrants held through The Depository Trust Company
or on the form set forth in Exhibit A-2 for Warrants not held through The Depository Trust Company.


 


“Securities
Act” means the Securities Act of 1933, as amended.


 


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


 


“Trading Market”
means the trading market on which the Common Stock is primarily listed on and quoted for trading, which, as of the date of this
Warrant shall be the Nasdaq Capital Market.


 


“Transfer
Agent” means American Stock Transfer & Trust Company, LLC, the Company’s transfer agent for the Common Stock
and Warrants.


 




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Section 2.          Exercise.


 


a)        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 the Transfer Agent (or such other office or agency
that the Company may designate by notice in writing to the registered Holder at the address of the Holder appearing on the books
of the Company), as applicable, of (i) a duly executed facsimile copy of the Notice of Exercise and (ii) within three (3) Trading
Days of the date said Notice of Exercise is received by the Transfer Agent, the Company shall have received payment of the aggregate
Exercise Price of the shares thereby purchased by wire transfer or cashier’s check drawn on a United States bank or, if available,
pursuant to the cashless exercise procedure specified in Section 2(c) below. If this Warrant is held in book-entry form, 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 form 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 Transfer Agent for cancellation within three (3)
Trading Days of the date the final Notice of Exercise is received by the Transfer Agent. 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 Transfer Agent shall maintain records showing the number of Warrant Shares purchased and the date of such purchases. The
Company or the Transfer Agent shall deliver any objection to any Notice of Exercise Form within one (1) Business Day of receipt
of such notice. Any reference in this Warrant to the issuance of a certificate or the certificates representing the Warrant Shares
shall also be deemed a reference to the book-entry issuance of such Warrant Shares. 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. In no event will the Company be required to net cash settle the Warrant.


 


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


 


c)        Cashless
Exercise. If (i) there is no effective registration statement registering, or current prospectus available for, the resale
of the Warrant Shares by the Holder and (ii) there is not an exemption from registration under the Securities Act available for
the issuance of the Warrant Shares, then this Warrant may only be exercised, in whole or in part, at such time by means of a “cashless
exercise” in which the Holder shall be entitled to receive a number of Warrant Shares equal to the quotient obtained by dividing
[(A-B) (X)] by (A), where:


 




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		(A) =	the VWAP on the Trading Day immediately preceding the
date on which Holder elects to exercise this Warrant by means of a “cashless exercise,” as set forth in the applicable
Notice of Exercise;



 


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



 


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



 


In no event
shall the Company be required to net cash settle the Warrant exercise.


 


d)            Mechanics
of Exercise.


 


i.            Delivery
of Warrant Shares Upon Exercise. Warrant Shares purchased hereunder shall be transmitted by the Transfer Agent to the Holder
by crediting the account of the Holder’s prime broker 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) the shares are eligible for resale by the Holder without volume or manner-of-sale limitations pursuant to Rule 144, and
otherwise by physical delivery to the address specified by the Holder in the Notice of Exercise by the end of the day on the date
that is three (3) Trading Days after the latest of (A) the receipt by the Company of the Notice of Exercise and (B) surrender of
this Warrant (if required) (such date, the “Warrant Share Delivery Date”). The Warrant Shares shall be deemed
to have been issued, and Holder or any other person so designated to be named therein shall be deemed to have become a holder of
record of such shares for all purposes, as of the date of delivery of the Notice of Exercise in accordance with this Section 2,
with payment to the Company of the Exercise Price (or by cashless exercise, if permitted) and all taxes required to be paid by
the Holder, if any, pursuant to Section 2(d)(v) prior to the issuance of such shares, having been paid; provided, however,
that if the date of such submission, payment and submission is a date upon which the Common Stock transfer books of the Company
are closed, such person shall be deemed to have become the record holder of such shares on, and such certificate shall be dated,
the next succeeding day on which the Common Stock transfer books of the Company are open. 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 (increasing to $20
per Trading Day on the fifth Trading Day after such liquidated damages begin to accrue) for each Trading Day after such Warrant
Share Delivery Date until such Warrant Shares are delivered or Holder rescinds such exercise.


 




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ii.         Delivery
of New Warrants Upon Exercise. If this Warrant shall have been exercised in part, the Company shall, at the request of a Holder
and upon surrender of this Warrant, 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 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 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.


 


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.


 




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e)           Holder’s
Exercise Limitations. The Company shall not effect any exercise of this Warrant, and a Holder shall not have the right to exercise
any portion of this Warrant, pursuant to Section 2 or otherwise, to the extent that after giving effect to such issuance after
exercise as set forth on the applicable Notice of Exercise, the Holder (together with the Holder’s Affiliates, and any other
Persons acting as a group together with the Holder or any of the Holder’s Affiliates), 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 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 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.  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 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 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 and shall have no liability for exercise of the Warrant that are not in compliance
with the Beneficial Ownership Limitation. 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 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 since the date as of which such number of
outstanding shares of Common Stock was reported. The “Beneficial Ownership Limitation” shall be 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 not less than 61 days’ prior 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 such increase or decrease will not be effective until the 61st day after such notice is delivered to the Company.
The provisions of this paragraph shall be construed and implemented in a manner otherwise than in strict conformity with the terms
of this Section 2(e) to correct this paragraph (or any portion hereof) which may be defective or inconsistent with the intended
Beneficial Ownership Limitation herein contained or to make changes or supplements necessary or desirable to properly give effect
to such limitation. The limitations contained in this paragraph shall apply to a successor holder of this Warrant.


 




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Section 3.          Certain
Adjustments.


 


a)        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.


 


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).


 




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c)        Pro
Rata Distributions. During such time as this Warrant is outstanding, if the Company shall declare or make any dividend or other
distribution of its assets (or rights to acquire its assets) to holders of 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 completed 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.


 


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, at the option of the Holder (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 (the “Alternate 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). 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. The Company shall cause any successor entity in a Fundamental Transaction in which the Company is not
the survivor (the “Successor Entity”) to assume in writing all of the obligations of the Company under this
Warrant in accordance with the provisions of this Section 3(d) pursuant to written agreements in form and substance reasonably
satisfactory to the Holder and approved by the Holder (without unreasonable delay) prior to such Fundamental Transaction and shall,
at the option of the Holder, deliver to the Holder in exchange for this Warrant a security of the Successor Entity evidenced by
a written instrument substantially similar in form and substance to this Warrant which is exercisable for a corresponding number
of shares of capital 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 referring to the “Company” shall refer instead to the Successor Entity), and may exercise every right and
power of the Company and shall assume all of the obligations of the Company under this Warrant with the same effect as if such
Successor Entity had been named as the Company herein.


 




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e)        Calculations.
All calculations under this Section 3 shall be made to the nearest cent or the nearest 1/100th of a share, as the case may be.
For purposes of this Section 3, the number of 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.


 


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
mail to the Holder 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.


 




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ii.         Notice
to Allow Exercise by Holder. If the Company shall declare a special nonrecurring cash dividend on or a redemption of the Common
Stock, (A) 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, (B) 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 (C) 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 mailed to the Holder
at its last 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 mail such notice or any defect therein or in the mailing thereof
shall not affect the validity of the corporate action required to be specified in such notice. To the extent that any notice provided
hereunder constitutes, or contains, material, non-public information regarding the Company or any of the Subsidiaries, the Company
shall simultaneously file such notice with the Commission pursuant to a Current Report on Form 8-K. The Holder shall remain entitled
to exercise this Warrant during the period commencing on the date of such notice to the effective date of the event triggering
such notice except as may otherwise be expressly set forth herein.


 




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Section 4.          Transfer
of Warrant.


 


a)        Transferability.
Subject to compliance with any applicable securities laws and the conditions set forth in Section 4(c) hereof, this Warrant and
all rights hereunder (including, without limitation, any registration rights) are transferable, in whole or in part, upon surrender
of this Warrant at the principal office of the Company or its designated agent, together with a written assignment of this Warrant
substantially in the form attached hereto duly executed by the Holder or its agent or attorney and funds sufficient to pay any
transfer taxes payable upon the making of such transfer. Upon such surrender and, if required, such payment, the Company shall
execute and deliver a new Warrant or Warrants in the name of the assignee or assignees, as applicable, and in the denomination
or denominations specified in such instrument of assignment, and shall issue to the assignor a new Warrant evidencing the portion
of this Warrant not so assigned, and this Warrant shall promptly be cancelled. Notwithstanding anything herein to the contrary,
the Holder shall not be required to physically surrender this Warrant to the Company unless the Holder has assigned this Warrant
in full, in which case, the Holder shall surrender this Warrant to the Company within three (3) Trading Days of the date 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.


 


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


 


c)        Transfer
Restrictions. The Company registered the Warrants and the Warrant Shares in the Registration Statement. The Company will use
its reasonable best efforts to maintain the effectiveness of such Registration Statement and the current status of the prospectus
contained in the Registration Statement or to file and maintain the effectiveness of another registration statement and another
current prospectus covering the Warrants and the Warrant Shares at any time that the Warrants are exercisable. However, if, at
the time of the surrender of this Warrant in connection with any transfer of this Warrant, the transfer of this Warrant shall
not be either (i) registered pursuant to an effective registration statement under the Securities Act and under applicable state
securities or blue sky laws or (ii) eligible for resale without volume or manner-of-sale restrictions or current public information
requirements pursuant to Rule 144, the Company may require, as a condition of allowing such transfer, that the Holder provide
to the Company an opinion of counsel selected by the transferor and reasonably acceptable to the Company, the form and substance
of which opinion shall be reasonably satisfactory to the Company, to the effect that such transfer does not require registration
under the Securities Act.


 




    	11



    	 



    

  


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), 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 of 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).


 


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.


 




    	12



    	 



    

  


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)        Jurisdiction.
The validity, interpretation, and performance of this Warrant shall be governed in all respects by the laws of the State of New
York, without giving effect to conflicts of law principles that would result in the application of the substantive laws of another
jurisdiction. The Company hereby agrees that any action, proceeding or claim against it arising out of or relating in any way to
this Warrant shall be brought and enforced in the courts of the State of New York or the United States District Court for the Southern
District of New York, and irrevocably submits to such jurisdiction, which jurisdiction shall be exclusive.


 


f)         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, notwithstanding the fact that all
rights hereunder terminate on the Termination Date. 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.


 


g)       Notices.
Any notice or statement authorized by this Warrant to be given or made by the holder of any Warrant to or on the Company shall
be sufficiently given (i) when so delivered if by hand or overnight delivery, (ii) when sent, if delivered by facsimile (provided
confirmation of transmission is mechanically or electronically generated and kept on file by the sending party) or by electronic
mail, or (iii) if sent by certified mail or private courier service within five (5) days after deposit of such notice, postage
prepaid, addressed, as follows:


 


NeuroMetrix,
Inc.


1000 Winter Street


Waltham, Massachusetts


Attn: Shai Gozani


By Email (which constitutes
notice): shai_gozani@neurometrix.com


 




    	13



    	 



    

 


h)        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.


 


i)         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.


 


j)         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.


 


k)        Amendment.
This Warrant may be modified or amended or the provisions hereof waived with the written consent of the Company and the Holder.


 


l)         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.


 


m)        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.


  


	 	neurometrix, inc.
	 	 	 
	 	By:	 
	 	 	Name:
	 	 	Title:


 




    	15



    	 



    

 


EXHIBIT A-1


 


NOTICE OF EXERCISE


 


FOR HOLDERS


HOLDING WARRANTS THROUGH THE DEPOSITORY
TRUST COMPANY


 


Warrant CUSIP No. [______]


Common Stock CUSIP No. [_______]


 


TO BE COMPLETED BY DIRECT PARTICIPANT


IN THE DEPOSITORY TRUST COMPANY


(To be executed upon exercise of the Warrant(s))


 


 


		To:	neurometrix,
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 undersigned requests that the shares
of Common Stock issuable upon exercise of the Warrant(s) be in registered form in the authorized denominations, registered in such
names and delivered, all as specified in accordance with the instructions set forth below; provided, that if the shares of Common
Stock are evidenced by global securities, the shares of Common Stock shall be registered in the name of the Depository or its nominee.


 


Dated:                         ,
20         


 


THIS EXERCISE NOTICE MUST BE DELIVERED
TO THE WARRANT AGENT (FOR ANY EXERCISE OTHER THAN A CASHLESS EXERCISE) OR THE COMPANY (FOR A CASHLESS EXERCISE), PRIOR TO 5:00
P.M., NEW YORK CITY TIME, ON THE TERMINATION DATE.  ALL CAPITALIZED TERMS USED HEREIN BUT NOT DEFINED HEREIN SHALL HAVE
THE MEANINGS ASSIGNED TO THEM IN THE WARRANT.


 


Name of any person who solicited exercise
of the Warrant(s): ____________________________


 




    	 



    	 



    

  


NAME OF DIRECT PARTICIPANT IN THE DEPOSITORY:


 


	Account Name:	 	 
	 	(Please Print)	 
	 	 	 
	Address:	 	 
	 	 	 
	 	 	 
	Contact Name:	 	 
	Telephone:	 	 
	Email:	 	 
	Fax:	 	 
	Soc. Security No./ID No.	 	 


 


Account from which Warrant(s) are Being
Delivered:                                                                                                         


 


Depository Account Number:                                                                                                              
                                


 


Account to which the Shares of
Common Stock are to be
Credited:                                                                                 


 


Depository Account Number:                                                                                                                                    


 


	
        FILL IN FOR WARRANT HOLDER DELIVERING
        WARRANT(S), IF OTHER THAN THE DIRECT PARTICIPANT:

         
	FILL IN FOR DELIVERY OF THE COMMON STOCK, IF OTHER THAN TO THE PERSON DELIVERING THIS WARRANT EXERCISE NOTICE:


 


	Acct. Name:	 	 	Acct. Name:	 	 
	 	 	 	 	 	 
	Contact Name:	 	 	Contact Name:	 	 
	Address:	 	 	Address:	 	 
	 	 	 	 	 	 
	Telephone:	 	 	Telephone:	 	 
	Email:	 	 	Email:	 	 
	Fax:	 	 	Fax:	 	 
	Soc Security No/ID No.	 	 	Soc. Security No./ID No.	 	 


 


[SIGNATURE
OF HOLDER]


 


Name of Investing Entity: ________________________________________________________________________


Signature of Authorized Signatory of
Investing Entity: _________________________________________________


Name of Authorized Signatory: ___________________________________________________________________


Title of Authorized Signatory: ____________________________________________________________________


Date: ________________________________________________________________________________________




    	 



    	 



    

 


EXHIBIT A-2


 


NOTICE OF EXERCISE


 


FOR HOLDERS


HOLDING BOOK-ENTRY WARRANTS


OTHER THAN THROUGH THE DEPOSITORY
TRUST COMPANY


 


Warrant CUSIP No. [_________]


Common Stock CUSIP No. [________]


(To be executed upon exercise of the Warrant(s))


 


		To:	neurometrix,
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 undersigned requests
that a statement representing the shares of Common Stock issued upon exercise of the Warrant(s) be delivered in accordance with
the instructions set forth below.


 


Dated:  ____________ __, 20___


 


THIS EXERCISE NOTICE MUST BE DELIVERED
TO THE WARRANT AGENT (FOR ANY EXERCISE OTHER THAN A CASHLESS EXERCISE) OR THE COMPANY (FOR A CASHLESS EXERCISE), PRIOR TO 5:00
P.M., NEW YORK CITY TIME, ON THE TERMINATION DATE.  ALL CAPITALIZED TERMS USED HEREIN BUT NOT DEFINED HEREIN SHALL HAVE
THE MEANINGS AS SIGNED TO THEM IN THE WARRANT.


  


Name of any person who solicited exercise
of the Warrant(s): ____________________________


  


THE UNDERSIGNED REQUESTS THAT A STATEMENT
REPRESENTING THE SHARES OF COMMON STOCK BE DELIVERED AS FOLLOWS:


 


	Name:	 	 
	 	(Please Print)	 
	 	 	 
	Address:	 	 
	 	 	 
	 	 	 
	Telephone:	 	 
	 	 	 
	Fax:	 	 


 




    	 



    	 



    

  


Social Security Number or Other Taxpayer Identification
Number (if applicable): __________________________


 


IF SAID NUMBER OF SHARES SHALL NOT
BE ALL THE SHARES PURCHASABLE UNDER THE WARRANT(S), THE UNDERSIGNED REQUESTS THAT NEW BOOK-ENTRY WARRANT(S) REPRESENTING THE
BALANCE OF SUCH WARRANT(S) SHALL BE REGISTERED AS FOLLOWS:


 


	Name:	 	 
	 	(Please Print)	 
	 	 	 
	Address:	 	 
	 	 	 
	 	 	 
	Telephone:	 	 
	 	 	 
	Fax:	 	 


 


Social Security
Number or Other Taxpayer Identification Number (if applicable): _________________________


 




    	 



    	 



    

 


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)
	Dated: _______________ __, ______	 
	 	 
	Holder’s Signature:____________________	 
	 	 
	Holder’s Address:____________________