Document:

Exhibit 4.2

 

Series E Warrants

 

PETROS PHARMACEUTICALS, INC.

 

WARRANT TO PURCHASE COMMON STOCK

 

Series E Warrant No.: [—]

 

Date of Issuance:                 
 (“Issuance Date”)

 

Petros Pharmaceuticals, Inc., a Delaware
corporation (the “Company”), hereby certifies that, for good and valuable consideration, the receipt and sufficiency
of which are hereby acknowledged, [———], the registered holder hereof or its permitted assigns (the
 “Holder”), is entitled, subject to the terms set forth below, to purchase from the Company, at the Exercise
Price (as defined below) then in effect, upon exercise of this Warrant to Purchase Common Stock (including any Warrants to Purchase
Common Stock issued in exchange, transfer or replacement hereof, the “Warrant”), at any time or times on or
after the Issuance Date but not after 5:00 p.m., New York time, on the Expiration Date (as defined below), [———] (subject
to adjustment as provided herein) fully paid and non-assessable shares of Common Stock (as defined below) (the “Warrant
Shares”). Except as otherwise defined herein, capitalized terms in this Warrant shall have the meanings set forth in
the Securities Purchase Agreement (as defined below). This Warrant is one of the warrants to Purchase Common Stock (the “SPA
Warrants”) issued pursuant to that certain Securities Purchase Agreement, dated as of November 13, 2015, by and among
Neurotrope, Inc. and the investor(s) thereunder (the “Buyer” or “Buyers” as applicable) referred
to therein (the “Securities Purchase Agreement”).

 

    

     

    

 

1.          EXERCISE
OF WARRANT.

 

(a)           Mechanics
of Exercise. Subject to the terms and conditions hereof (including, without limitation, the limitations set forth in Section 1(f)),
this Warrant may be exercised by the Holder on any day on or after the Issuance Date in whole or in part, by delivery (whether
via facsimile or otherwise) of a written notice, in the form attached hereto as Exhibit A (the “Exercise
Notice”), of the Holder’s election to exercise this Warrant. Within two (2) Trading Days following an exercise
of this Warrant as aforesaid, the Holder shall deliver payment to the Company of an amount equal to the Exercise Price in effect
on the date of such exercise multiplied by the number of Warrant Shares as to which this Warrant was so exercised (in respect of
such specific exercise, the “Aggregate Exercise Price”) in cash or via wire transfer of immediately available
funds if the Holder did not notify the Company in such Exercise Notice that such exercise was made pursuant to a Cashless Exercise
(as defined in Section 1(d)). 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. The Holder shall not be required to deliver
the original of this Warrant in order to effect an exercise hereunder. Execution and delivery of an Exercise Notice with respect
to less than all of the Warrant Shares shall have the same effect as cancellation of the original of this Warrant certificate and
issuance of a new Warrant certificate evidencing the right to purchase the remaining number of Warrant Shares. Execution and delivery
of an Exercise Notice for all of the then-remaining Warrant Shares shall have the same effect as cancellation of the original of
this Warrant certificate after delivery of the Warrant Shares in accordance with the terms hereof. On or before the first (1st)
Trading Day following the date on which the Company has received an Exercise Notice, the Company shall transmit by facsimile or
email an acknowledgment of confirmation of receipt of such Exercise Notice, in the form attached hereto as Exhibit B to
the Holder and the Company’s transfer agent (the “Transfer Agent”). On or before the later of (i) three
(3) Trading Days after receipt of the applicable Exercise Notice and (ii) other than in the case of a Cashless Exercise,
one (1) Trading Day following delivery of the Aggregate Exercise Price (such later date, the "Warrant Share Delivery
Deadline”), the Company shall (X) provided that the Transfer Agent is participating in The Depository Trust Company
(“DTC”) Fast Automated Securities Transfer Program (which the Company shall cause the Transfer Agent to do at
Holder’s request) and provided that such shares of Common Stock are unrestricted, upon the request of the Holder, credit
such aggregate number of shares of Common Stock to which the Holder is entitled pursuant to such exercise to the Holder’s
or its designee’s balance account with DTC through its Deposit/Withdrawal at Custodian system, or (Y) if the Transfer
Agent is not participating in the DTC Fast Automated Securities Transfer Program or if such shares of Common Stock are restricted,
issue and deliver to the Holder or, at the Holder’s instruction pursuant to the Exercise Notice, the Holder’s agent
or designee, in each case, sent by reputable overnight courier to the address as specified in the applicable Exercise Notice, a
certificate, registered in the Company’s share register in the name of the Holder or its designee (as indicated in the applicable
Exercise Notice), for the number of shares of Common Stock to which the Holder is entitled pursuant to such exercise. Upon delivery
of an Exercise Notice, so long as the Aggregate Exercise Price is delivered within two (2) Trading Days after delivery of
the Exercise Notice (unless such exercise is pursuant to a valid Cashless 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 such Warrant Shares are credited to the Holder’s DTC account or the date of delivery of the certificates evidencing
such Warrant Shares (as the case may be). If this Warrant is submitted in connection with any exercise pursuant to this Section 1(a) and
the number of Warrant Shares represented by this Warrant submitted for exercise is greater than the number of Warrant Shares being
acquired upon an exercise, then, at the request of the Holder, the Company shall as soon as practicable and in no event later than
three (3) Trading Days after any exercise and at its own expense, issue and deliver to the Holder (or its designee) a new
Warrant (in accordance with Section 8(d)) representing the right to purchase the number of Warrant Shares purchasable immediately
prior to such exercise under this Warrant, less the number of Warrant Shares with respect to which this Warrant is exercised. No
fractional shares of Common Stock are to be issued upon the exercise of this Warrant, but rather the number of shares of Common
Stock to be issued shall be rounded up to the nearest whole number. The Company shall pay any and all taxes and fees which may
be payable with respect to the issuance and delivery of Warrant Shares upon exercise of this Warrant. Notwithstanding any provision
of this Warrant to the contrary, no more than the Maximum Eligibility Number of Warrant Shares shall be exercisable hereunder.

 

(b)           Exercise
Price. For purposes of this Warrant, “Exercise Price” means $25.00 subject to adjustment as provided herein.

 

(c)           Company’s
Failure to Timely Deliver Securities. If the Company shall fail, for any reason or for no reason, to issue (or cause to be
issued) to the Holder on or prior to the Warrant Share Delivery Deadline, the Warrant Shares required to be delivered in accordance
with, and in the manner required by, Section 1(a) above, then, in addition to all other remedies available to the Holder,
the Company shall pay in cash to the Holder on each Trading Day after such third (3rd) Trading Day that the issuance of such shares
of Common Stock is not timely effected an amount equal to either (i) with respect to restricted shares, 1% of the product
of (A) the aggregate number of restricted shares of Common Stock not issued to the Holder on a timely basis and to which the
Holder is entitled and (B) the Closing Sale Price of the Common Stock on the Trading Day immediately preceding the last possible
date on which the Company could have issued such shares of Common Stock to the Holder without violating Section 1(a), or (ii) with
respect to unrestricted securities, 2% of the product of (A) the aggregate number of unrestricted shares of Common Stock not
issued to the Holder on a timely basis and to which the Holder is entitled and (B) the Closing Sale Price of the Common Stock
on the Trading Day immediately preceding the last possible date on which the Company could have issued such shares of Common Stock
to the Holder without violating Section 1(a). If on or prior to the Warrant Share Delivery Deadline, the Company shall fail
to issue and deliver (or cause to be issued and delivered) the Warrant Shares required to be delivered in accordance with, and
in the manner required by, Section 1(a) above, and if on or after such Warrant Share Delivery Deadline the Holder (or
any other Person in respect, or on behalf, of the Holder) purchases (in an open market transaction or otherwise) shares of Common
Stock to deliver in satisfaction of a sale by the Holder of all or any portion of the number of shares of Common Stock, or a sale
of a number of shares of Common Stock equal to all or any portion of the number of shares of Common Stock, issuable upon such exercise
that the Holder so anticipated receiving from the Company, then, in addition to all other remedies available to the Holder, the
Company shall within five (5) Business Days after the Holder’s request and in the Holder’s discretion, either
(i) pay cash to the Holder in an amount equal to the Holder’s total purchase price (including brokerage commissions
and reasonable out-of-pocket expenses, if any) for the shares of Common Stock so purchased (including, without limitation, by any
other Person in respect, or on behalf, of the Holder) (the “Buy-In Price”), at which point the Company’s
obligation to so issue and deliver such certificate or credit the Holder’s balance account with DTC for the number of shares
of Common Stock to which the Holder is entitled upon the Holder’s exercise hereunder (as the case may be) (and to issue such
shares of Common Stock) shall terminate, or (ii) promptly honor its obligation to so issue and deliver to the Holder a certificate
or certificates representing such shares of Common Stock or credit the Holder’s balance account with DTC for the number of
shares of Common Stock to which the Holder is entitled upon the Holder’s exercise hereunder (as the case may be) and pay
cash to the Holder in an amount equal to the excess (if any) of the Buy-In Price less the product of (A) such number of shares
of Common Stock multiplied by (B) ”B” as set out in the formula in Section 1(d).

 

    

     

    

 

(d)           Cashless
Exercise. Notwithstanding anything contained herein to the contrary (other than Section 1(f) below), if at any time
after one hundred and twenty (120) calendar days following the Issuance Date, the Warrant Shares to be received upon the cash exercise
of this Warrant are not freely tradable by Holder without restriction of any kind or nature, then the Holder may, in its sole discretion,
exercise this Warrant in whole or in part and, in lieu of making the cash payment otherwise contemplated to be made to the Company
upon such exercise in payment of the Aggregate Exercise Price, elect instead to receive upon such exercise the “Net Number”
of shares of Common Stock determined according to the following formula (a “Cashless Exercise”):

 

Net Number = (A
x B) - (A x C)

 

B

 

For purposes of the
foregoing formula:

 

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

 

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

 

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

 

(e)           Disputes.
In the case of a dispute as to the determination of the Exercise Price or the arithmetic calculation of the number of Warrant Shares
to be issued pursuant to the terms hereof (including, without limitation, the Net Number), the Company shall promptly issue to
the Holder the number of Warrant Shares that are not disputed, provided that following such issuance to Holder such dispute shall
be resolved in accordance with Section 14.

 

    

     

    

 

(f)            Limitations
on Exercises. Notwithstanding anything to the contrary contained in this Warrant, this Warrant shall not be exercisable by
the Holder hereof to the extent (but only to the extent) that the Holder (together with such Holder’s affiliates (as defined
in Rule 405 promulgated under the Securities Act of 1933, as amended) and any other Persons acting as a group together ("Attribution
Parties")) would beneficially own in excess of 9.99% (the “Maximum Percentage”) of the Common Stock
after giving effect to such exercise. To the extent the above limitation applies, the determination of whether this Warrant shall
be exercisable (vis-à-vis other convertible, exercisable or exchangeable securities owned by the Holder or any of its affiliates
or Attribution Parties) and of which such securities shall be exercisable (as among all such securities owned by the Holder and
its Attribution Parties) shall, subject to such Maximum Percentage limitation, be determined on the basis of the first submission
to the Company for conversion, exercise or exchange (as the case may be). No prior inability to exercise this Warrant pursuant
to this paragraph shall have any effect on the applicability of the provisions of this paragraph with respect to any subsequent
determination of exercisability. For the purposes of this paragraph, beneficial ownership and all determinations and calculations
(including, without limitation, with respect to calculations of percentage ownership) shall be determined in accordance with Section 13(d) of
the 1934 Act (as defined in the Securities Purchase Agreement) and the rules and regulations promulgated thereunder. The provisions
of this paragraph shall be implemented in a manner otherwise than in strict conformity with the terms of this paragraph to correct
this paragraph (or any portion hereof) which may be defective or inconsistent with the intended Maximum Percentage beneficial ownership
limitation herein contained or to make changes or supplements necessary or desirable to properly give effect to such Maximum Percentage
limitation. The limitations contained in this paragraph shall apply to a successor Holder (and such Holder's Attribution Parties)
of this Warrant. The holders of Common Stock shall be third party beneficiaries of this paragraph and the Company may not waive
this paragraph without the consent of holders of a majority of its Common Stock. For any reason at any time, upon the written request
of the Holder, the Company shall within one (1) Business Day confirm in writing to the Holder the number of shares of Common
Stock then outstanding, including by virtue of any prior conversion or exercise of convertible or exercisable securities into Common
Stock, including, without limitation, pursuant to this Warrant or securities issued pursuant to the Securities Purchase Agreement.
Upon delivery of a written notice to the Company, the Holder may from time to time increase or decrease the Maximum Percentage
to any other percentage not in excess of 9.99% as specified in such notice; provided that (i) any such increase in the Maximum
Percentage will not be effective until the sixty-first (61st ) day after such notice is delivered to the Company and (ii) any
such increase or decrease will apply only to the Holder (and its Attribution Parties) sending such notice and not to any other
Holder. For purposes of clarity, the shares of Common Stock issuable pursuant to the terms of this Warrant in excess of the Maximum
Percentage shall not be deemed to be beneficially owned by the Holder for any purpose including for purposes of Section 13(d) or
Rule 16a-1(a)(1) of the 1934 Act.

 

(g)           Insufficient
Authorized Shares. The Company shall at all times keep reserved for issuance under this Warrant a number of shares of Common
Stock equal to 150% of the shares of Common Stock as shall be necessary to satisfy the Company’s obligation to issue shares
of Common Stock hereunder (without regard to any limitation otherwise contained herein with respect to the number of shares of
Common Stock that may be acquirable upon exercise of this Warrant). If, notwithstanding the foregoing, and not in limitation thereof,
at any time while any of the SPA Warrants remain outstanding the Company does not have a sufficient number of authorized and unreserved
shares of Common Stock to satisfy its obligation to reserve for issuance upon exercise of the SPA Warrants at least a number of
shares of Common Stock equal to the number of shares of Common Stock as shall from time to time be necessary to effect the exercise
of all of the SPA Warrants then outstanding (the “Required Reserve Amount”) (an “Authorized Share Failure”),
then the Company shall immediately take all action necessary to increase the Company’s authorized shares of Common Stock
to an amount sufficient to allow the Company to reserve the Required Reserve Amount for all the SPA Warrants then outstanding.
Without limiting the generality of the foregoing sentence, to the extent required by law or the rules of the Eligible Market
on which the Common Stock is traded or quoted, as soon as practicable after the date of the occurrence of an Authorized Share Failure,
but in no event later than sixty (60) days after the occurrence of such Authorized Share Failure, the Company shall hold a meeting
of its shareholders for the approval of an increase in the number of authorized shares of Common Stock. In connection with such
meeting, to the extent required by law or the rules of the Eligible Market on which the Common Stock is traded or quoted,
the Company shall provide each shareholder with a proxy statement and shall use its reasonable efforts to solicit its shareholders’
approval of such increase in authorized shares of Common Stock.

 

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

 

(a)            Stock
Dividends and Splits. If the Company, at any time on or after the date of the Securities Purchase Agreement, (i) pays
a stock dividend on one or more classes of its then outstanding shares of Common Stock or otherwise makes a distribution on any
class of capital stock that is payable in shares of Common Stock, (ii) subdivides (by any stock split, stock dividend, recapitalization
or otherwise) one or more classes of its then outstanding shares of Common Stock into a larger number of shares or (iii) combines
(by combination, reverse stock split or otherwise) one or more classes of its then outstanding shares of stock into a smaller number
of shares, then in each such case (a) the Exercise Price shall be multiplied by a fraction of which the numerator shall be
the number of shares of Common Stock outstanding immediately before such event and of which the denominator shall be the number
of shares of Common Stock outstanding immediately after such event and (b) the number of Warrant Shares that may be purchased
upon exercise of this Warrant shall be increased or decreased proportionately, so that after such adjustment the aggregate Exercise
Price payable hereunder for the adjusted number of Warrant Shares shall be the same as the aggregate Exercise Price in effect immediately
prior to such adjustment (without regard to any limitations on exercise contained herein). Any adjustment made pursuant to clause
(i) of this paragraph shall become effective immediately after the record date for the determination of shareholders entitled
to receive such dividend or distribution, and any adjustment pursuant to clause (ii) or (iii) of this paragraph shall
become effective immediately after the effective date of such subdivision or combination. If an event requiring an adjustment of
the Exercise Price under this Section occurs, the Mandatory Notice Trading Price shall be adjusted accordingly.

 

    

     

    

 

(b)           Reserved.

 

(c)           Other
Events. In the event that the Company (or any Subsidiary (as defined in the Securities Purchase Agreement)) shall take any
action to which the provisions hereof are not strictly applicable, or, if applicable, would not operate to protect the Holder from
dilution or if any event occurs of the type contemplated by the provisions of this Section 2 but not expressly provided for
by such provisions (including, without limitation, the granting of stock appreciation rights, phantom stock rights or other rights
with equity features), then the Company’s board of directors shall in good faith determine and implement an appropriate adjustment
in the Exercise Price and the number of Warrant Shares (if applicable) so as to protect the rights of the Holder, provided that
no such adjustment pursuant to this Section 2(c) will increase the Exercise Price or decrease the number of Warrant Shares
as otherwise determined pursuant to this Section 2, provided further that if the Holder does not accept such adjustments as
appropriately protecting its interests hereunder against such dilution, then such dispute shall be settled pursuant to the terms
of Section 13 of this Warrant.

 

(d)           Calculations.
All calculations under this Section 2 shall be made by rounding to the nearest 1/100th of cent and the nearest 1/100th of
a share, as applicable.

 

3.          RIGHTS
UPON DISTRIBUTION OF ASSETS. In addition to any adjustments pursuant to Section 2 above, if the Company shall declare
or make any dividend or other distribution of its assets (or rights to acquire its assets) to holders of shares of Common Stock,
by way of return of capital or otherwise (including, without limitation, any distribution of cash, stock or other securities, property
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 Maximum Percentage) immediately before the date on which a record is taken
for such Distribution, or, if no such record is taken, the date as of which the record holders of shares of Common Stock are to
be determined for the participation in such Distribution (provided, however, to the extent that the Holder’s right to participate
in any such Distributions would result in the Holder exceeding the Maximum Percentage, then the Holder shall not be entitled to
participate in such Distribution to such extent (or the beneficial ownership of any such shares of Common Stock as a result of
such Distribution to such extent) and such Distribution to such extent 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 Maximum Percentage).

 

    

     

    

 

4.          PURCHASE
RIGHTS; FUNDAMENTAL TRANSACTIONS.

 

(a)            Purchase
Rights. In addition to any adjustments pursuant to Section 2 above, if at any time the Company grants, issues or sells
any Options, Convertible Securities or rights to purchase stock, warrants, securities or other property pro rata to the record
holders of any class of shares of Common Stock or shares of stock convertible into 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 Maximum Percentage) immediately
before the date on which a record is taken for the grant, issuance or sale of such Purchase Rights, or, if no such record is taken,
the date as of which the record holders of shares of Common Stock are to be determined for the grant, 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 Maximum Percentage, 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 Maximum Percentage); further provided that in the event of any Purchase Rights due in relation to a grant,
issue or sale to record holders of shares of stock convertible into Common Stock, the amount of Purchase Rights to be received
by the Holder shall be determined by calculating the Purchase Rights the holders of the record holders of shares of stock Convertible
into Common Stock received per share of Common Stock underlying such class of stock convertible into Common Stock.

 

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

 

    

     

    

 

(c)           Reserved.

 

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

 

5.          NONCIRCUMVENTION.
The Company hereby covenants and agrees that the Company will not, by amendment of its Certificate of Incorporation (as defined
in the Securities Purchase Agreement and including any certificate of designations), Bylaws (as defined in the Securities Purchase
Agreement) or through any reorganization, transfer of assets, consolidation, merger, scheme of arrangement, dissolution, issue
or sale of securities, or any other voluntary action, for the purpose of avoiding or seeking to avoid the observance or performance
of any of the terms of this Warrant, and will at all times in good faith carry out all the provisions of this Warrant and take
all action as may be required to protect the rights of the Holder. Without limiting the generality of the foregoing, the Company
(i) shall not increase the par value of any shares of Common Stock receivable upon the exercise of this Warrant above the
Exercise Price then in effect, (ii) shall take all such actions as may be necessary or appropriate in order that the Company
may validly and legally issue fully paid and non-assessable shares of Common Stock upon the exercise of this Warrant (or such other
securities, cash, assets or other property then deliverable on exercise of this Warrant), and (iii) shall, so long as any
of the SPA Warrants are outstanding, take all action necessary to reserve and keep available out of its authorized and unissued
shares of Common Stock, solely for the purpose of effecting the exercise of the SPA Warrants, 150% of the maximum number of shares
of Common Stock as shall from time to time be necessary to effect the exercise of the SPA Warrants then outstanding (without regard
to any limitations on exercise).

 

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

 

    

     

    

 

7.          REISSUANCE
OF WARRANTS.

 

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

 

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

 

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

 

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

 

8.          NOTICES.
Whenever notice is required to be given under this Warrant, unless otherwise provided herein, such notice shall be given in accordance
with Section 7(f) of the Securities Purchase Agreement. The Company shall provide the Holder with prompt written notice
of all actions taken pursuant to this Warrant, including in reasonable detail a description of such action and the reason therefor.
Without limiting the generality of the foregoing, the Company will give written notice to the Holder (i) as soon as practicable
upon each adjustment of the Exercise Price and the number of Warrant Shares, setting forth in reasonable detail, and certifying,
the calculation of such adjustment(s). If the Company (i) declares a dividend or any other distribution of cash, securities
or other property in respect of its Common Stock (other than a dividend payable solely in shares of Common Stock) or (ii) authorizes
the voluntary dissolution, liquidation or winding up of the affairs of the Company, then the Company shall deliver to the Holder
a notice describing the material terms and conditions of such dividend, distribution or transaction; provided that the Company
shall not be obligated to provide such notice if the required information is filed with the SEC through EDGAR and available to
the public through the EDGAR system. Notwithstanding anything to the contrary in this Section 8, the failure to deliver any
notice under this Section 8 or any defect therein shall not affect the validity of the corporate action required to be described
in such notice. Until the exercise of its, his or her Warrant or any portion of such Warrant, a Holder shall not have nor exercise
any rights by virtue of ownership of a Warrant as a shareholder of the Company (including without limitation the right to notification
of shareholder meetings or the right to receive any notice or other communication concerning the business and affairs of the Company
other than as provided in this Section 8.

 

9.          AMENDMENT
AND WAIVER. Except as otherwise provided herein, the provisions of this Warrant (other than Section 1(f)) may be amended
and the Company may take any action herein prohibited, or omit to perform any act herein required to be performed by it, only with
the prior written consent of the Company and the Holder. The Holder shall be entitled, at its option, to the benefit of any amendment
of any other similar warrant issued under the Securities Purchase Agreement (excluding any warrants delivered to the Placement
Agent or its Affiliates). No waiver shall be effective unless it is in writing and signed by an authorized representative of the
waiving party.

 

    

     

    

 

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

 

11.        GOVERNING
LAW. This Warrant shall be governed by and construed and enforced in accordance with, and all questions concerning the construction,
validity, interpretation and performance of this Warrant shall be governed by, the internal laws of the State of New York. The
Company hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in New York County, New
York, for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed
herein, and hereby irrevocably waives, and agrees not to assert in any suit, action or proceeding, any claim that it is not personally
subject to the jurisdiction of any such court, that such suit, action or proceeding is brought in an inconvenient forum or that
the venue of such suit, action or proceeding is improper. Nothing contained herein shall be deemed to limit in any way any right
to serve process in any manner permitted by law. Nothing contained herein shall be deemed or operate to preclude the Holder from
bringing suit or taking other legal action against the Company in any other jurisdiction to collect on the Company’s obligations
to the Holder or to enforce a judgment or other court ruling in favor of the Holder. EACH PARTY HEREBY IRREVOCABLY WAIVES
ANY RIGHT IT MAY HAVE TO, AND AGREES NOT TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY DISPUTE HEREUNDER OR IN CONNECTION
WITH OR ARISING OUT OF THIS WARRANT OR ANY TRANSACTION CONTEMPLATED HEREBY.

 

12.        CONSTRUCTION;
HEADINGS. This Warrant shall be deemed to be jointly drafted by the Company and the Holder and shall not be construed against
any Person as the drafter hereof. The headings of this Warrant are for convenience of reference and shall not form part of, or
affect the interpretation of, this Warrant.

 

13.        DISPUTE
RESOLUTION. In the case of a dispute as to the determination of the Exercise Price, the Closing Sale Price, the Bid Price or
fair market value or the arithmetic calculation of the Warrant Shares (as the case may be), the Company or the Holder (as the case
may be) may submit the disputed determinations or arithmetic calculations (as the case may be) via facsimile (i) within two
(2) Business Days after receipt of the applicable notice giving rise to such dispute to the Company or the Holder (as the
case may be) or (ii) if no notice gave rise to such dispute, at any time after the Holder or the Company (as the case may
be) learned of the circumstances giving rise to such dispute. If the Holder and the Company are unable to agree upon such determination
or calculation (as the case may be) of the Exercise Price, the Closing Sale Price, the Bid Price or fair market value or the number
of Warrant Shares (as the case may be) within three (3) Business Days of such disputed determination or arithmetic calculation
being submitted to the Company or the Holder (as the case may be), then the Company shall, within two (2) Business Days submit
via facsimile (a) the disputed arithmetic calculation of the Warrant Shares, the disputed determination of the Exercise Price,
the Closing Sale Price, the Bid Price, fair market value or otherwise (as the case may be) to an independent, reputable investment
bank of nationally recognized standing or other independent professional organization of equal reputation and standing selected
jointly by the Holder and the Company (each proposed organization being subject to the consent of the other party, with such consent
not to be unreasonably withheld, conditioned or delayed) or (b) if acceptable to the Holder, the disputed arithmetic calculation
of the Warrant Shares to the Company’s independent, outside accountant. The Company shall request the investment bank, professional
organization or the accountant (as the case may be) to perform at the Company’s expense the determinations or calculations
(as the case may be) and notify the Company and the Holder of the results no later than ten (10) Business Days from the time
it receives such disputed determinations or calculations (as the case may be). Such investment bank’s, professional organization’s
or accountant’s determination or calculation (as the case may be) shall be binding upon all parties absent demonstrable error.
The party whose determination or calculation is furthest from that determined or calculation by the investment bank or accountant
shall pay the costs of such determination or calculation.

 

    

     

    

 

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

 

15.        TRANSFER.
This Warrant may be offered for sale, sold, transferred or assigned without the consent of the Company. The Holder represents
that by accepting this Warrant it understands that this Warrant and any securities obtainable upon exercise of this Warrant have
not been registered for sale under Federal or state securities laws and are being offered and sold to the Holder pursuant to one
or more exemptions from the registration requirements of such securities laws. In the absence of an effective registration of such
securities or an exemption therefrom, any certificates for such securities shall bear the legend set forth on the first page hereof.
The Holder understands that it must bear the economic risk of its investment in this Warrant and any securities obtainable upon
exercise of this Warrant for an indefinite period of time, as this Warrant and such securities have not been registered under Federal
or state securities laws and therefore cannot be sold unless subsequently registered under such laws, unless an exemption from
such registration is available.

 

16.        DTC
Accounts. Notwithstanding anything to the contrary in this Warrant, the Company shall not be obligated herein to credit any
restricted securities, including any Warrant Shares if so restricted, to the Holder’s DTC account, and any obligation hereunder
to credit shares to a Holder’s DTC account shall only apply to unrestricted securities.

 

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

 

(a)           “Bid
Price” means, for any security as of the particular time of determination, the bid price for such security on the Principal
Market as reported by Bloomberg as of such time of determination, or, if the Principal Market is not the principal securities exchange
or trading market for such security, the bid price of such security on the principal securities exchange or trading market where
such security is listed or traded as reported by Bloomberg as of such time of determination, or if the foregoing does not apply,
the bid price of such security in the over-the-counter market on the electronic bulletin board for such security as reported by
Bloomberg as of such time of determination, or, if no bid price is reported for such security by Bloomberg as of such time of determination,
the average of the bid prices of all of the market makers for such security as reported in the “pink sheets” by OTC
Markets Group Inc. (formerly Pink Sheets LLC) (the “Pink Sheets”) as of such time of determination. If the Bid
Price cannot be calculated for a security as of the particular time of determination on any of the foregoing bases, the Bid Price
of such security as of such time of determination shall be the fair market value as mutually determined by the Company and the
Holder. If the Company and the Holder are unable to agree upon the fair market value of such security, then such dispute shall
be resolved in accordance with the procedures in Section 13. All such determinations shall be appropriately adjusted for any
stock dividend, stock split, stock combination or other similar transaction during such period.

 

    

     

    

 

(d)           “Bloomberg”
means Bloomberg, L.P.

 

(e)            “Business
Day” means any day other than Saturday, Sunday or other day on which commercial banks in The City of New York are authorized
or required by law to remain closed.

 

(f)            “Closing
Sale Price” means, for any security as of any date, the last closing trade price, for such security on the Principal
Market, as reported by Bloomberg, or, if the Principal Market begins to operate on an extended hours basis and does not designate
the closing trade price (as the case may be) then the last trade price of such security prior to 4:00:00 p.m., New York time, as
reported by Bloomberg, or, if the Principal Market is not the principal securities exchange or trading market for such security,
the last trade price of such security on the principal securities exchange or trading market where such security is listed or traded
as reported by Bloomberg, or if the foregoing do not apply, the last trade price of such security in the over-the-counter market
on the electronic bulletin board for such security as reported by Bloomberg, or, if no last trade price is reported for such security
by Bloomberg, the average of the bid prices, or the ask prices, respectively, of all of the market makers for such security as
reported in the Pink Sheets. If the Closing Sale Price cannot be calculated for a security on a particular date on any of the foregoing
bases, the Closing Sale Price (as the case may be) of such security on such date shall be the fair market value as mutually determined
by the Company and the Holder. If the Company and the Holder are unable to agree upon the fair market value of such security, then
such dispute shall be resolved in accordance with the procedures in Section 13. All such determinations shall be appropriately
adjusted for any stock dividend, stock split, stock combination or other similar transaction during such period.

 

(g)           “Common
Stock” means (i) the Company’s shares of common stock, $0.0001 par value per share, and (ii) any capital
stock into which such common stock shall have been changed or any share capital resulting from a reclassification of such common
stock.

 

    

     

    

 

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

 

(i)             “Effective
Date” shall have the meaning give in Section 5(a).

 

(j)             “Eligible
Market” means the OTCQX marketplace of the OTC Markets Group, Inc., the OTCQB marketplace of the OTC Markets Group, Inc.,
The New York Stock Exchange, Inc., the NYSE Amex Equities, The NASDAQ Global Select Market, The NASDAQ Global Market or The
NASDAQ Capital Market.

 

(k)         “Expiration
Date” means the date that the five year anniversary of the closing of the mergers contemplated by the Merger Agreement
(as defined in the Warrant Amendment Agreement, dated as of September 28, 2020, by and between the Company and the Holder).

 

(l)             “Fundamental
Transaction” means that (i) the Company or any of its Subsidiaries shall, directly or indirectly, in one or more
related transactions, (1) consolidate or merge with or into (whether or not the Company or any of its Subsidiaries is the
surviving corporation) any other Person, or (2) sell, lease, license, assign, transfer, convey or otherwise dispose of all
or substantially all of its respective properties or assets to any other Person, or (3) allow any other Person to make a purchase,
tender or exchange offer that is accepted by the holders of more than 50% of the outstanding shares of Voting Stock of the Company
(not including any shares of Voting Stock of the Company held by the Person or Persons making or party to, or associated or affiliated
with the Persons making or party to, such purchase, tender or exchange offer), or (4) consummate a stock or share purchase
agreement or other business combination (including, without limitation, a reorganization, recapitalization, spin-off or scheme
of arrangement) with any other Person whereby such other Person acquires more than 50% of the outstanding shares of Voting Stock
of the Company (not including any shares of Voting Stock of the Company 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), or (ii) any “person” or “group” (as these terms are used for purposes of Sections 13(d) and
14(d) of the 1934 Act and the rules and regulations promulgated thereunder) becomes the “beneficial owner”
(as defined in Rule 13d-3 under the 1934 Act), directly or indirectly, of 50% of the aggregate ordinary voting power represented
by issued and outstanding Voting Stock of the Company.

 

(m)           “Maximum
Eligibility Number” means initially zero and shall be increased upon each exercise of the Series C Warrant held
by the Holder by such aggregate number of shares of Common Stock equal to 100% of the number of shares of Common Stock issued upon
any such exercise of such Series C Warrant (as adjusted for stock splits, stock distributions, recapitalizations and similar
events).

 

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

 

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

 

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

 

(q)           “Principal
Market” means the Eligible Market that is the principal securities exchange market for the Common Stock.

 

    

     

    

 

(r)            “Registration
Rights Agreement” means that certain Registration Rights Agreement, dated November 13, 2015, by and among Neurotrope, Inc.
and each of the buyers who are a party thereto.

 

(s)            “Series C
Warrant” means the Series C Warrant to Purchase Common Stock issued pursuant to the Securities Purchase Agreement.

 

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

 

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

 

(v)           “Voting
Stock” of a Person means capital stock of such Person of the class or classes pursuant to which the holders thereof have
the general voting power to elect, or the general power to appoint, at least a majority of the board of directors, managers or
trustees of such Person (irrespective of whether or not at the time capital stock of any other class or classes shall have or might
have voting power by reason of the happening of any contingency).

 

(w)           “VWAP”
means, for any security as of any date, the dollar volume-weighted average price for such security on the Principal Market (or,
if the Principal Market is not the principal trading market for such security, then on the principal securities exchange or securities
market on which such security is then traded) during the period beginning at 9:30:01 a.m., New York time, and ending at 4:00:00
p.m., New York time, as reported by Bloomberg through its “Volume at Price” function or, if the foregoing does not
apply, the dollar volume-weighted average price of such security in the over-the-counter market on the electronic bulletin board
for such security during the period beginning at 9:30:01 a.m., New York time, and ending at 4:00:00 p.m., New York time, as reported
by Bloomberg, or, if no dollar volume-weighted average price is reported for such security by Bloomberg for such hours, the average
of the highest closing bid price and the lowest closing ask price of any of the market makers for such security as reported in
the “pink sheets” by OTC Markets Group Inc. (formerly Pink Sheets LLC). If VWAP cannot be calculated for such security
on such date on any of the foregoing bases, the VWAP of such security on such date shall be the fair market value as mutually determined
by the Company and the Holder. If the Company and the Holder are unable to agree upon the fair market value of such security, then
such dispute shall be resolved in accordance with the procedures in Section 13. All such determinations shall be appropriately
adjusted for any stock dividend, stock split, stock combination or other similar transaction during such period.

 

[signature page follows]

 

    

     

    

 

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

 

PETROS PHARMACEUTICALS, INC.

 

	By:	 
	Name:	 
	Title:	 

 

    

     

    

 

EXHIBIT A

 

EXERCISE NOTICE

 

TO BE EXECUTED BY THE REGISTERED HOLDER
TO EXERCISE THIS 

WARRANT TO PURCHASE COMMON STOCK

 

PETROS PHARMACEUTICALS, INC.

 

The undersigned holder
hereby exercises the right to purchase                  
of the shares of Common Stock (“Warrant Shares”) of Petros Pharmaceuticals, Inc., a Delaware corporation
(the “Company”), evidenced by Series E Warrant No.                  
(the “Warrant”). Capitalized terms used herein and not otherwise defined shall have the respective meanings
set forth in the Warrant.

 

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

 

	 	 	 	a “Cash Exercise” with respect to ______________ Warrant
	 	 	 	Shares; and/or

 

	 	 	 	a “Cashless Exercise” with respect to ___________ Warrant
	 	 	 	Shares.

 

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

 

2.             Payment
of Exercise Price. The Holder shall pay the Aggregate Exercise Price in the sum of $              to
the Company in accordance with the terms of the Warrant.

 

3.             Delivery
of Warrant Shares and Net Number of shares of Common Stock. The Company shall deliver to Holder, or its designee or agent as
specified below, shares of Common Stock in respect of the exercise contemplated hereby. Delivery shall be made to Holder, or for
its benefit, to the following address:

 

	 	 
	 	 
	 	 
	 	 
	 	 

 

Date: ___________

 

Name of Registered Holder

 

	By:	 	 
	 	Name:	 
	 	Title:	 

 

	Account	 
	Number:	 
	 	(if shares are delivered by electronic book entry transfer)

 

Transaction Code

 

	Number:	 
	 	(if shares are delivered by electronic book entry transfer)

 

    

     

    

 

EXHIBIT B

 

ACKNOWLEDGMENT

 

The Company hereby
acknowledges this Exercise Notice and hereby directs ______________ to issue the above indicated number of shares of Common Stock
in accordance with the Transfer Agent Instructions dated _________, 20__, from the Company and acknowledged and agreed to by _______________.

 

	 	PETROS PHARMACEUTICALS, INC.
	 	 	 
	 	By:	                                             	 
	 	Name:	 
	 	Title:Exhibit 4.3

 

 

Series F Warrants

 

 

PETROS PHARMACEUTICALS, INC.

 

WARRANT TO PURCHASE COMMON STOCK

 

Series F Warrant No.: [—]

 

Date of Issuance:                  
  (“Issuance Date”)

 

Petros Pharmaceuticals, Inc., a Delaware
corporation (the “Company”), hereby certifies that, for good and valuable consideration, the receipt and sufficiency
of which are hereby acknowledged, [———], the registered holder hereof or its permitted assigns (the
 “Holder”), is entitled, subject to the terms set forth below, to purchase from the Company, at the Exercise
Price (as defined below) then in effect, upon exercise of this Warrant to Purchase Common Stock (including any Warrants to Purchase
Common Stock issued in exchange, transfer or replacement hereof, the “Warrant”), at any time or times on or
after the Issuance Date but not after 5:00 p.m., New York time, on the Expiration Date (as defined below), [———] (subject
to adjustment as provided herein) fully paid and non-assessable shares of Common Stock (as defined below) (the “Warrant
Shares”). Except as otherwise defined herein, capitalized terms in this Warrant shall have the meanings set forth in
the Securities Purchase Agreement (as defined below). This Warrant is one of the warrants to Purchase Common Stock (the “SPA
Warrants”) issued pursuant to that certain Securities Purchase Agreement, dated as of November 17, 2016, by and among
Neurotrope, Inc. and the investor(s) thereunder (the “Buyer” or “Buyers” as applicable) referred
to therein (the “Securities Purchase Agreement”).

 

    	 		 

     

    

 

1.            EXERCISE
OF WARRANT.

 

(a)          Mechanics
of Exercise. Subject to the terms and conditions hereof (including, without limitation, the limitations set forth in Section 1(f)),
this Warrant may be exercised by the Holder on any day on or after the Issuance Date in whole or in part, by delivery (whether
via facsimile, in pdf format or otherwise) of a written notice, in the form attached hereto as Exhibit A (the
 “Exercise Notice”), of the Holder’s election to exercise this Warrant. Within two (2) Trading Days
following an exercise of this Warrant as aforesaid, the Holder shall deliver payment to the Company of an amount equal to the Exercise
Price in effect on the date of such exercise multiplied by the number of Warrant Shares as to which this Warrant was so exercised
(in respect of such specific exercise, the “Aggregate Exercise Price”) in cash or via wire transfer of immediately
available funds if the Holder did not notify the Company in such Exercise Notice that such exercise was made pursuant to a Cashless
Exercise (as defined in Section 1(d)). 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. The Holder shall not be required to deliver
the original of this Warrant in order to effect an exercise hereunder. Execution and delivery of an Exercise Notice with respect
to less than all of the Warrant Shares shall have the same effect as cancellation of the original of this Warrant certificate and
issuance of a new Warrant certificate evidencing the right to purchase the remaining number of Warrant Shares. Execution and delivery
of an Exercise Notice for all of the then-remaining Warrant Shares shall have the same effect as cancellation of the original of
this Warrant certificate after delivery of the Warrant Shares in accordance with the terms hereof. On or before the first (1st)
Trading Day following the date on which the Company has received an Exercise Notice, the Company shall transmit by facsimile or
email an acknowledgment of confirmation of receipt of such Exercise Notice, in the form attached hereto as Exhibit B to
the Holder and the Company’s transfer agent (the “Transfer Agent”). On or before the earlier of: (A) three
(3) Trading Days and (B) the number of Trading Days comprising the Standard Settlement Period (as defined below) after
receipt of the applicable Exercise Notice and (ii) other than in the case of a Cashless Exercise, one (1) Trading Day
following delivery of the Aggregate Exercise Price (such later date, the "Warrant Share Delivery Deadline”),
the Company shall (X) provided that the Transfer Agent is participating in The Depository Trust Company (“DTC”)
Fast Automated Securities Transfer Program (which the Company shall cause the Transfer Agent to do at Holder’s request) and
provided that such shares of Common Stock are unrestricted, upon the request of the Holder, credit such aggregate number of shares
of Common Stock to which the Holder is entitled pursuant to such exercise to the Holder’s or its designee’s balance
account with DTC through its Deposit/Withdrawal at Custodian system, or (Y) if the Transfer Agent is not participating in
the DTC Fast Automated Securities Transfer Program or if such shares of Common Stock are restricted, issue and deliver to the Holder
or, at the Holder’s instruction pursuant to the Exercise Notice, the Holder’s agent or designee, in each case, sent
by reputable overnight courier to the address as specified in the applicable Exercise Notice, a certificate, registered in the
Company’s share register in the name of the Holder or its designee (as indicated in the applicable Exercise Notice), for
the number of shares of Common Stock to which the Holder is entitled pursuant to such exercise. Upon delivery of an Exercise Notice,
so long as the Aggregate Exercise Price is delivered within two (2) Trading Days after delivery of the Exercise Notice (unless
such exercise is pursuant to a valid Cashless 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 such Warrant
Shares are credited to the Holder’s DTC account or the date of delivery of the certificates evidencing such Warrant Shares
(as the case may be). If this Warrant is submitted in connection with any exercise pursuant to this Section 1(a) and
the number of Warrant Shares represented by this Warrant submitted for exercise is greater than the number of Warrant Shares being
acquired upon an exercise, then, at the request of the Holder, the Company shall as soon as practicable and in no event later than
three (3) Trading Days after any exercise and at its own expense, issue and deliver to the Holder (or its designee) a new
Warrant (in accordance with Section 7(d)) representing the right to purchase the number of Warrant Shares purchasable immediately
prior to such exercise under this Warrant, less the number of Warrant Shares with respect to which this Warrant is exercised. No
fractional shares of Common Stock are to be issued upon the exercise of this Warrant, but rather the number of shares of Common
Stock to be issued shall be rounded up to the nearest whole number. The Company shall pay any and all taxes and fees which may
be payable with respect to the issuance and delivery of Warrant Shares upon exercise of this Warrant. The Holder and the Company
shall maintain records showing the number of Warrant Shares purchased and the date of such purchases. 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. 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 or quotation system with
respect to the Common Stock as in effect on the date of delivery of the Exercise Notice.

 

(b)          Exercise
Price. For purposes of this Warrant, “Exercise Price” means $10.25 subject to adjustment as provided herein.
The Company in its sole discretion may lower the Exercise Price at any time prior to the Expiration Date.

 

    	 		 

     

    

 

(c)          Company’s
Failure to Timely Deliver Securities. If the Company shall fail, for any reason or for no reason, to issue (or cause to be
issued) to the Holder on or prior to the Warrant Share Delivery Deadline, the Warrant Shares required to be delivered in accordance
with, and in the manner required by, Section 1(a) above, then, in addition to all other remedies available to the Holder,
the Company shall pay in cash to the Holder on each Trading Day after such third (3rd) Trading Day that the issuance of such shares
of Common Stock is not timely effected an amount equal to either (i) with respect to restricted shares, 1% of the product
of (A) the aggregate number of restricted shares of Common Stock not issued to the Holder on a timely basis and to which the
Holder is entitled and (B) the Closing Sale Price of the Common Stock on the Trading Day immediately preceding the last possible
date on which the Company could have issued such shares of Common Stock to the Holder without violating Section 1(a), or (ii) with
respect to unrestricted securities, 2% of the product of (A) the aggregate number of unrestricted shares of Common Stock not
issued to the Holder on a timely basis and to which the Holder is entitled and (B) the Closing Sale Price of the Common Stock
on the Trading Day immediately preceding the last possible date on which the Company could have issued such shares of Common Stock
to the Holder without violating Section 1(a). If on or prior to the Warrant Share Delivery Deadline, the Company shall fail
to issue and deliver (or cause to be issued and delivered) the Warrant Shares required to be delivered in accordance with, and
in the manner required by, Section 1(a) above, and if on or after such Warrant Share Delivery Deadline the Holder (or
any other Person in respect, or on behalf, of the Holder) purchases (in an open market transaction or otherwise) shares of Common
Stock to deliver in satisfaction of a sale by the Holder of all or any portion of the number of shares of Common Stock, or a sale
of a number of shares of Common Stock equal to all or any portion of the number of shares of Common Stock, issuable upon such exercise
that the Holder so anticipated receiving from the Company, then, in addition to all other remedies available to the Holder, the
Company shall within five (5) Business Days after the Holder’s request and in the Holder’s discretion, either
(i) pay cash to the Holder in an amount equal to the Holder’s total purchase price (including brokerage commissions
and reasonable out-of-pocket expenses, if any) for the shares of Common Stock so purchased (including, without limitation, by any
other Person in respect, or on behalf, of the Holder) (the “Buy-In Price”), at which point the Company’s
obligation to so issue and deliver such certificate or credit the Holder’s balance account with DTC for the number of shares
of Common Stock to which the Holder is entitled upon the Holder’s exercise hereunder (as the case may be) (and to issue such
shares of Common Stock) shall terminate, or (ii) promptly honor its obligation to so issue and deliver to the Holder a certificate
or certificates representing such shares of Common Stock or credit the Holder’s balance account with DTC for the number of
shares of Common Stock to which the Holder is entitled upon the Holder’s exercise hereunder (as the case may be) and pay
cash to the Holder in an amount equal to the excess (if any) of the Buy-In Price less the product of (A) such number of shares
of Common Stock multiplied by (B) ”B” as set out in the formula in Section 1(d).

 

(d)          Cashless
Exercise. Notwithstanding anything contained herein to the contrary (other than Section 1(f) below), if at any time
after the Issuance Date, the Warrant Shares to be received upon the cash exercise
of this Warrant are not freely tradable by Holder without restriction of any kind or nature, then the Holder may, in its sole discretion,
exercise this Warrant in whole or in part and, in lieu of making the cash payment otherwise contemplated to be made to the Company
upon such exercise in payment of the Aggregate Exercise Price, elect instead to receive upon such exercise the “Net Number”
of shares of Common Stock determined according to the following formula (a “Cashless Exercise”):

 

	Net Number	 = (A x B) - (A x C)
	 	 	   B
	 	 	 

 

            For purposes of the foregoing
formula:

 

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

 

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

 

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

 

(e)          Disputes.
In the case of a dispute as to the determination of the Exercise Price or the arithmetic calculation of the number of Warrant Shares
to be issued pursuant to the terms hereof (including, without limitation, the Net Number), the Company shall promptly issue to
the Holder the number of Warrant Shares that are not disputed, provided that following such issuance to Holder such dispute shall
be resolved in accordance with Section 13.

 

    	 		 

     

    

 

(f)          Limitations
on Exercises. Notwithstanding anything to the contrary contained in this Warrant, this Warrant shall not be exercisable by
the Holder hereof to the extent (but only to the extent) that the Holder (together with such Holder’s affiliates (as defined
in Rule 405 promulgated under the Securities Act of 1933, as amended) and any other Persons acting as a group together ("Attribution
Parties")) would beneficially own in excess of 9.99% (the “Maximum Percentage”) of the Common Stock
after giving effect to such exercise. To the extent the above limitation applies, the determination of whether this Warrant shall
be exercisable (vis-à-vis other convertible, exercisable or exchangeable securities owned by the Holder or any of its affiliates
or Attribution Parties) and of which such securities shall be exercisable (as among all such securities owned by the Holder and
its Attribution Parties) shall, subject to such Maximum Percentage limitation, be determined on the basis of the first submission
to the Company for conversion, exercise or exchange (as the case may be). No prior inability to exercise this Warrant pursuant
to this paragraph shall have any effect on the applicability of the provisions of this paragraph with respect to any subsequent
determination of exercisability. For the purposes of this paragraph, beneficial ownership and all determinations and calculations
(including, without limitation, with respect to calculations of percentage ownership) shall be determined in accordance with Section 13(d) of
the 1934 Act (as defined in the Securities Purchase Agreement) and the rules and regulations promulgated thereunder. The provisions
of this paragraph shall be implemented in a manner otherwise than in strict conformity with the terms of this paragraph to correct
this paragraph (or any portion hereof) which may be defective or inconsistent with the intended Maximum Percentage beneficial ownership
limitation herein contained or to make changes or supplements necessary or desirable to properly give effect to such Maximum Percentage
limitation. The limitations contained in this paragraph shall apply to a successor Holder (and such Holder's Attribution Parties)
of this Warrant. The holders of Common Stock shall be third party beneficiaries of this paragraph and the Company may not waive
this paragraph without the consent of holders of a majority of its Common Stock. For any reason at any time, upon the written request
of the Holder, the Company shall within one (1) Business Day confirm in writing to the Holder the number of shares of Common
Stock then outstanding, including by virtue of any prior conversion or exercise of convertible or exercisable securities into Common
Stock, including, without limitation, pursuant to this Warrant or securities issued pursuant to the Securities Purchase Agreement.
Upon delivery of a written notice to the Company, the Holder may from time to time increase or decrease the Maximum Percentage
to any other percentage not in excess of 9.99% as specified in such notice; provided that (i) any such increase in the Maximum
Percentage will not be effective until the sixty-first (61st ) day after such notice is delivered to the Company and (ii) any
such increase or decrease will apply only to the Holder (and its Attribution Parties) sending such notice and not to any other
Holder. For purposes of clarity, the shares of Common Stock issuable pursuant to the terms of this Warrant in excess of the Maximum
Percentage shall not be deemed to be beneficially owned by the Holder for any purpose including for purposes of Section 13(d) or
Rule 16a-1(a)(1) of the 1934 Act.

 

(g)         Insufficient
Authorized Shares. The Company shall at all times keep reserved for issuance under this Warrant a number of shares of Common
Stock as shall be necessary to satisfy the Company’s obligation to issue shares of Common Stock hereunder (without regard
to any limitation otherwise contained herein with respect to the number of shares of Common Stock that may be acquirable upon exercise
of this Warrant). If, notwithstanding the foregoing, and not in limitation thereof, at any time while any of the SPA Warrants remain
outstanding the Company does not have a sufficient number of authorized and unreserved shares of Common Stock to satisfy its obligation
to reserve for issuance upon exercise of the SPA Warrants at least a number of shares of Common Stock equal to the number of shares
of Common Stock as shall from time to time be necessary to effect the exercise of all of the SPA Warrants then outstanding (the
 “Required Reserve Amount”) (an “Authorized Share Failure”), then the Company shall immediately
take all action necessary to increase the Company’s authorized shares of Common Stock to an amount sufficient to allow the
Company to reserve the Required Reserve Amount for all the SPA Warrants then outstanding. Without limiting the generality of the
foregoing sentence, to the extent required by law or the rules of the Eligible Market on which the Common Stock is traded
or quoted, as soon as practicable after the date of the occurrence of an Authorized Share Failure, but in no event later than sixty
(60) days after the occurrence of such Authorized Share Failure, the Company shall hold a meeting of its shareholders for the approval
of an increase in the number of authorized shares of Common Stock. In connection with such meeting, to the extent required by law
or the rules of the Eligible Market on which the Common Stock is traded or quoted, the Company shall provide each shareholder
with a proxy statement and shall use its reasonable efforts to solicit its shareholders’ approval of such increase in authorized
shares of Common Stock.

 

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

 

    	 		 

     

    

 

 

(a)          Stock
Dividends and Splits. If the Company, at any time on or after the date of the Securities Purchase Agreement, (i) pays
a stock dividend on one or more classes of its then outstanding shares of Common Stock or otherwise makes a distribution on any
class of capital stock that is payable in shares of Common Stock, (ii) subdivides (by any stock split, stock dividend, recapitalization
or otherwise) one or more classes of its then outstanding shares of Common Stock into a larger number of shares or (iii) combines
(by combination, reverse stock split or otherwise) one or more classes of its then outstanding shares of stock into a smaller number
of shares, then in each such case (a) the Exercise Price shall be multiplied by a fraction of which the numerator shall be
the number of shares of Common Stock outstanding immediately before such event and of which the denominator shall be the number
of shares of Common Stock outstanding immediately after such event and (b) the number of Warrant Shares that may be purchased
upon exercise of this Warrant shall be increased or decreased proportionately, so that after such adjustment the aggregate Exercise
Price payable hereunder for the adjusted number of Warrant Shares shall be the same as the aggregate Exercise Price in effect immediately
prior to such adjustment (without regard to any limitations on exercise contained herein). Any adjustment made pursuant to clause
(i) of this paragraph shall become effective immediately after the record date for the determination of shareholders entitled
to receive such dividend or distribution, and any adjustment pursuant to clause (ii) or (iii) of this paragraph shall
become effective immediately after the effective date of such subdivision or combination. If an event requiring an adjustment of
the Exercise Price under this Section occurs, the Mandatory Notice Trading Price shall be adjusted accordingly.

 

(b)          Calculations.
All calculations under this Section 2 shall be made by rounding to the nearest cent and the nearest 1/100th of a share, as
applicable.

 

3.            RIGHTS
UPON DISTRIBUTION OF ASSETS. In addition to any adjustments pursuant to Section 2 above, if the Company shall declare
or make any dividend or other distribution of its assets (or rights to acquire its assets) to holders of shares of Common Stock,
by way of return of capital or otherwise (including, without limitation, any distribution of cash, stock or other securities, property
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 Maximum Percentage) immediately before the date on which a record is taken
for such Distribution, or, if no such record is taken, the date as of which the record holders of shares of Common Stock are to
be determined for the participation in such Distribution (provided, however, to the extent that the Holder’s right to participate
in any such Distributions would result in the Holder exceeding the Maximum Percentage, then the Holder shall not be entitled to
participate in such Distribution to such extent (or the beneficial ownership of any such shares of Common Stock as a result of
such Distribution to such extent) and such Distribution to such extent 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 Maximum Percentage).

 

    	 		 

     

    

 

4.            PURCHASE
RIGHTS; FUNDAMENTAL TRANSACTIONS.

 

(a)          Purchase
Rights. In addition to any adjustments pursuant to Section 2 above, if at any time the Company grants, issues or sells
any Options, Convertible Securities or rights to purchase stock, warrants, securities or other property pro rata to the record
holders of any class of shares of Common Stock or shares of stock convertible into 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 Maximum Percentage) immediately
before the date on which a record is taken for the grant, issuance or sale of such Purchase Rights, or, if no such record is taken,
the date as of which the record holders of shares of Common Stock are to be determined for the grant, 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 Maximum Percentage, 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 Maximum Percentage); further provided that in the event of any Purchase Rights due in relation to a grant,
issue or sale to record holders of shares of stock convertible into Common Stock, the amount of Purchase Rights to be received
by the Holder shall be determined by calculating the Purchase Rights the holders of the record holders of shares of stock Convertible
into Common Stock received per share of Common Stock underlying such class of stock convertible into Common Stock.

 

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

 

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

 

    	 		 

     

    

 

5.            NONCIRCUMVENTION.   
The Company hereby covenants and agrees that the Company will not, by amendment of its Certificate of Incorporation (as defined
in the Securities Purchase Agreement and including any certificate of designations), Bylaws (as defined in the Securities Purchase
Agreement) or through any reorganization, transfer of assets, consolidation, merger, scheme of arrangement, dissolution, issue
or sale of securities, or any other voluntary action, for the purpose of avoiding or seeking to avoid the observance or performance
of any of the terms of this Warrant, and will at all times in good faith carry out all the provisions of this Warrant and take
all action as may be required to protect the rights of the Holder. Without limiting the generality of the foregoing, the Company
(i) shall not increase the par value of any shares of Common Stock receivable upon the exercise of this Warrant above the
Exercise Price then in effect, (ii) shall take all such actions as may be necessary or appropriate in order that the Company
may validly and legally issue fully paid and non-assessable shares of Common Stock upon the exercise of this Warrant (or such other
securities, cash, assets or other property then deliverable on exercise of this Warrant), and (iii) shall, so long as any
of the SPA Warrants are outstanding, take all action necessary to reserve and keep available out of its authorized and unissued
shares of Common Stock, solely for the purpose of effecting the exercise of the SPA Warrants, the maximum number of shares of Common
Stock as shall from time to time be necessary to effect the exercise of the SPA Warrants then outstanding (without regard to any
limitations on exercise).

 

6.            WARRANT
HOLDER NOT DEEMED A SHAREHOLDER.    Except as otherwise specifically provided herein, the Holder, solely in
its capacity as a holder of this Warrant, shall not be entitled to vote or receive dividends or be deemed the holder of share capital
of the Company for any purpose, nor shall anything contained in this Warrant be construed to confer upon the Holder, solely in
its capacity as the Holder of this Warrant, any of the rights of a shareholder of the Company or any right to vote, give or withhold
consent to any corporate action (whether any reorganization, issue of stock, reclassification of stock, consolidation, merger,
conveyance or otherwise), receive notice of meetings, receive dividends or subscription rights, or otherwise, prior to the issuance
to the Holder of the Warrant Shares which it is then entitled to receive upon the due exercise of this Warrant. In addition, nothing
contained in this Warrant shall be construed as imposing any liabilities on the Holder to purchase any securities (upon exercise
of this Warrant or otherwise) or as a shareholder of the Company, whether such liabilities are asserted by the Company or by creditors
of the Company. Notwithstanding this Section 7, the Company shall provide the Holder with copies of the same notices and other
information given to the shareholders of the Company generally, contemporaneously with the giving thereof to the shareholders; provided that
the Company shall not be obligated to provide such information if it is filed with the SEC through EDGAR and available to the public
through the EDGAR system.

 

7.            REISSUANCE
OF WARRANTS.

 

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

 

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

 

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

 

    	 		 

     

    

 

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

 

8.            NOTICES.
Whenever notice is required to be given under this Warrant, unless otherwise provided herein, such notice shall be given in accordance
with Section 8(f) of the Securities Purchase Agreement. The Company shall provide the Holder with prompt written notice
of all actions taken pursuant to this Warrant, including in reasonable detail a description of such action and the reason therefor.
Without limiting the generality of the foregoing, the Company will give written notice to the Holder (i) as soon as practicable
upon each adjustment of the Exercise Price and the number of Warrant Shares, setting forth in reasonable detail, and certifying,
the calculation of such adjustment(s). If the Company (i) declares a dividend or any other distribution of cash, securities
or other property in respect of its Common Stock (other than a dividend payable solely in shares of Common Stock) or (ii) authorizes
the voluntary dissolution, liquidation or winding up of the affairs of the Company, then the Company shall deliver to the Holder
a notice describing the material terms and conditions of such dividend, distribution or transaction; provided that
the Company shall not be obligated to provide such notice if the required information is filed with the SEC through EDGAR and available
to the public through the EDGAR system. Notwithstanding anything to the contrary in this Section 8, the failure to deliver
any notice under this Section 8 or any defect therein shall not affect the validity of the corporate action required to be
described in such notice. Until the exercise of its, his or her Warrant or any portion of such Warrant, a Holder shall not have
nor exercise any rights by virtue of ownership of a Warrant as a shareholder of the Company (including without limitation the right
to notification of shareholder meetings or the right to receive any notice or other communication concerning the business and affairs
of the Company other than as provided in this Section 8.

 

9.            AMENDMENT
AND WAIVER. Except as otherwise provided herein, the provisions of this Warrant (other than Section 1(f)) may be amended
and the Company may take any action herein prohibited, or omit to perform any act herein required to be performed by it, only with
the prior written consent of the Company and the Holder. The Holder shall be entitled, at its option, to the benefit of any amendment
of any other similar warrant issued under the Securities Purchase Agreement (excluding any warrants delivered to the Placement
Agent or its Affiliates). No waiver shall be effective unless it is in writing and signed by an authorized representative of the
waiving party.

 

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

 

    	 		 

     

    

 

11.          GOVERNING
LAW. This Warrant shall be governed by and construed and enforced in accordance with, and all questions concerning the construction,
validity, interpretation and performance of this Warrant shall be governed by, the internal laws of the State of New York. The
Company hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in New York County, New
York, for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed
herein, and hereby irrevocably waives, and agrees not to assert in any suit, action or proceeding, any claim that it is not personally
subject to the jurisdiction of any such court, that such suit, action or proceeding is brought in an inconvenient forum or that
the venue of such suit, action or proceeding is improper. Nothing contained herein shall be deemed to limit in any way any right
to serve process in any manner permitted by law. Nothing contained herein shall be deemed or operate to preclude the Holder from
bringing suit or taking other legal action against the Company in any other jurisdiction to collect on the Company’s obligations
to the Holder or to enforce a judgment or other court ruling in favor of the Holder. EACH PARTY HEREBY IRREVOCABLY WAIVES
ANY RIGHT IT MAY HAVE TO, AND AGREES NOT TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY DISPUTE HEREUNDER OR IN CONNECTION
WITH OR ARISING OUT OF THIS WARRANT OR ANY TRANSACTION CONTEMPLATED HEREBY.

 

12.          CONSTRUCTION;
HEADINGS. This Warrant shall be deemed to be jointly drafted by the Company and the Holder and shall not be construed against
any Person as the drafter hereof. The headings of this Warrant are for convenience of reference and shall not form part of, or
affect the interpretation of, this Warrant.

 

13.          DISPUTE
RESOLUTION. In the case of a dispute as to the determination of the Exercise Price, the Closing Sale Price, the Bid Price or
fair market value or the arithmetic calculation of the Warrant Shares (as the case may be), the Company or the Holder (as the case
may be) may submit the disputed determinations or arithmetic calculations (as the case may be) via facsimile (i) within two
(2) Business Days after receipt of the applicable notice giving rise to such dispute to the Company or the Holder (as the
case may be) or (ii) if no notice gave rise to such dispute, at any time after the Holder or the Company (as the case may
be) learned of the circumstances giving rise to such dispute. If the Holder and the Company are unable to agree upon such determination
or calculation (as the case may be) of the Exercise Price, the Closing Sale Price, the Bid Price or fair market value or the number
of Warrant Shares (as the case may be) within three (3) Business Days of such disputed determination or arithmetic calculation
being submitted to the Company or the Holder (as the case may be), then the Company shall, within two (2) Business Days submit
via facsimile (a) the disputed arithmetic calculation of the Warrant Shares, the disputed determination of the Exercise Price,
the Closing Sale Price, the Bid Price, fair market value or otherwise (as the case may be) to an independent, reputable investment
bank of nationally recognized standing or other independent professional organization of equal reputation and standing selected
jointly by the Holder and the Company (each proposed organization being subject to the consent of the other party, with such consent
not to be unreasonably withheld, conditioned or delayed) or (b) if acceptable to the Holder, the disputed arithmetic calculation
of the Warrant Shares to the Company’s independent, outside accountant. The Company shall request the investment bank, professional
organization or the accountant (as the case may be) to perform at the Company’s expense the determinations or calculations
(as the case may be) and notify the Company and the Holder of the results no later than ten (10) Business Days from the time
it receives such disputed determinations or calculations (as the case may be). Such investment bank’s, professional organization’s
or accountant’s determination or calculation (as the case may be) shall be binding upon all parties absent demonstrable error.
The party whose determination or calculation is furthest from that determined or calculation by the investment bank or accountant
shall pay the costs of such determination or calculation.

 

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

 

    	 		 

     

    

 

15.           TRANSFER.
This Warrant may be offered for sale, sold, transferred or assigned without the consent of the Company. The Holder represents that
by accepting this Warrant it understands that this Warrant and any securities obtainable upon exercise of this Warrant have not
been registered for sale under Federal or state securities laws and are being offered and sold to the Holder pursuant to one or
more exemptions from the registration requirements of such securities laws. In the absence of an effective registration of such
securities or an exemption therefrom, any certificates for such securities shall bear the legend set forth on the first page hereof.
The Holder understands that it must bear the economic risk of its investment in this Warrant and any securities obtainable upon
exercise of this Warrant for an indefinite period of time, as this Warrant and such securities have not been registered under Federal
or state securities laws and therefore cannot be sold unless subsequently registered under such laws, unless an exemption from
such registration is available.

 

16.          DTC
Accounts. Notwithstanding anything to the contrary in this Warrant, the Company shall not be obligated herein to credit any
restricted securities, including any Warrant Shares if so restricted, to the Holder’s DTC account, and any obligation hereunder
to credit shares to a Holder’s DTC account shall only apply to unrestricted securities.

 

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

 

(a)          “Bid
Price” means, for any security as of the particular time of determination, the bid price for such security on the Principal
Market as reported by Bloomberg as of such time of determination, or, if the Principal Market is not the principal securities exchange
or trading market for such security, the bid price of such security on the principal securities exchange or trading market where
such security is listed or traded as reported by Bloomberg as of such time of determination, or if the foregoing does not apply,
the bid price of such security in the over-the-counter market on the electronic bulletin board for such security as reported by
Bloomberg as of such time of determination, or, if no bid price is reported for such security by Bloomberg as of such time of determination,
the average of the bid prices of all of the market makers for such security as reported in the “pink sheets” by OTC
Markets Group Inc. (formerly Pink Sheets LLC) (the “Pink Sheets”) as of such time of determination. If the Bid
Price cannot be calculated for a security as of the particular time of determination on any of the foregoing bases, the Bid Price
of such security as of such time of determination shall be the fair market value as mutually determined by the Company and the
Holder. If the Company and the Holder are unable to agree upon the fair market value of such security, then such dispute shall
be resolved in accordance with the procedures in Section 13. All such determinations shall be appropriately adjusted for any
stock dividend, stock split, stock combination or other similar transaction during such

 

(b)         “Bloomberg”
means Bloomberg, L.P.

 

(c)          “Business
Day” means any day other than Saturday, Sunday or other day on which commercial banks in The City of New York are authorized
or required by law to remain closed.

 

(d)        
 “Closing Sale Price” means, for any security as of any date, the last closing trade price, for such security
on the Principal Market, as reported by Bloomberg, or, if the Principal Market begins to operate on an extended hours basis and
does not designate the closing trade price (as the case may be) then the last trade price of such security prior to 4:00:00 p.m.,
New York time, as reported by Bloomberg, or, if the Principal Market is not the principal securities exchange or trading market
for such security, the last trade price of such security on the principal securities exchange or trading market where such security
is listed or traded as reported by Bloomberg, or if the foregoing do not apply, the last trade price of such security in the over-the-counter
market on the electronic bulletin board for such security as reported by Bloomberg, or, if no last trade price is reported for
such security by Bloomberg, the average of the bid prices, or the ask prices, respectively, of all of the market makers for such
security as reported in the Pink Sheets. If the Closing Sale Price cannot be calculated for a security on a particular date on
any of the foregoing bases, the Closing Sale Price (as the case may be) of such security on such date shall be the fair market
value as mutually determined by the Company and the Holder. If the Company and the Holder are unable to agree upon the fair market
value of such security, then such dispute shall be resolved in accordance with the procedures in Section 13. All such determinations
shall be appropriately adjusted for any stock dividend, stock split, stock combination or other similar transaction during such
period.

 

    	 		 

     

    

 

(e)          “Common
Stock” means (i) the Company’s shares of common stock, $0.0001 par value per share, and (ii) any capital
stock into which such common stock shall have been changed or any share capital resulting from a reclassification of such common
stock.

 

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

 

(g)        
 “Eligible Market” means the OTCQX marketplace of the OTC Markets Group, Inc., the OTCQB marketplace of
the OTC Markets Group, Inc., The New York Stock Exchange, Inc., the NYSE Amex Equities, The NASDAQ Global Select Market,
The NASDAQ Global Market or The NASDAQ Capital Market.

 

(h)          “Expiration
Date” means the date that is the five year anniversary of the closing of the mergers contemplated by the Merger Agreement
(as defined in the Warrant Amendment Agreement, dated as of September 28, 2020, by and between the Company and the Holder).

  

(i)           “Fundamental
Transaction” means that (i) the Company or any of its Subsidiaries shall, directly or indirectly, in one or more
related transactions, (1) consolidate or merge with or into (whether or not the Company or any of its Subsidiaries is the
surviving corporation) any other Person, or (2) sell, lease, license, assign, transfer, convey or otherwise dispose of all
or substantially all of its respective properties or assets to any other Person, or (3) allow any other Person to make a purchase,
tender or exchange offer that is accepted by the holders of more than 50% of the outstanding shares of Voting Stock of the Company
(not including any shares of Voting Stock of the Company held by the Person or Persons making or party to, or associated or affiliated
with the Persons making or party to, such purchase, tender or exchange offer), or (4) consummate a stock or share purchase
agreement or other business combination (including, without limitation, a reorganization, recapitalization, spin-off or scheme
of arrangement) with any other Person whereby such other Person acquires more than 50% of the outstanding shares of Voting Stock
of the Company (not including any shares of Voting Stock of the Company 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), or (ii) any “person” or “group” (as these terms are used for purposes of Sections 13(d) and
14(d) of the 1934 Act and the rules and regulations promulgated thereunder) becomes the “beneficial owner”
(as defined in Rule 13d-3 under the 1934 Act), directly or indirectly, of 50% of the aggregate ordinary voting power represented
by issued and outstanding Voting Stock of the Company.

 

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

 

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

 

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

 

(m)         “Principal
Market” means the Eligible Market that is the principal securities exchange market for the Common Stock.

 

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

 

(o)         “Trading
Day” means any day on which the Common Stock is traded on the Principal Market.

 

    	 		 

     

    

 

(p)         “Voting
Stock” of a Person means capital stock of such Person of the class or classes pursuant to which the holders thereof have
the general voting power to elect, or the general power to appoint, at least a majority of the board of directors, managers or
trustees of such Person (irrespective of whether or not at the time capital stock of any other class or classes shall have or might
have voting power by reason of the happening of any contingency).

 

(q)         “VWAP”
means, for any security as of any date, the dollar volume-weighted average price for such security on the Principal Market (or,
if the Principal Market is not the principal trading market for such security, then on the principal securities exchange or securities
market on which such security is then traded) during the period beginning at 9:30:01 a.m., New York time, and ending at 4:00:00
p.m., New York time, as reported by Bloomberg through its “Volume at Price” function or, if the foregoing does not
apply, the dollar volume-weighted average price of such security in the over-the-counter market on the electronic bulletin board
for such security during the period beginning at 9:30:01 a.m., New York time, and ending at 4:00:00 p.m., New York time, as reported
by Bloomberg, or, if no dollar volume-weighted average price is reported for such security by Bloomberg for such hours, the average
of the highest closing bid price and the lowest closing ask price of any of the market makers for such security as reported in
the “pink sheets” by OTC Markets Group Inc. (formerly Pink Sheets LLC). If VWAP cannot be calculated for such security
on such date on any of the foregoing bases, the VWAP of such security on such date shall be the fair market value as mutually determined
by the Company and the Holder. If the Company and the Holder are unable to agree upon the fair market value of such security, then
such dispute shall be resolved in accordance with the procedures in Section 13. All such determinations shall be appropriately
adjusted for any stock dividend, stock split, stock combination or other similar transaction during such period.

 

[signature page follows]

 

    	 		 

     

    

 

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

 

PETROS PHARMACEUTICALS, INC.

 

	By:	 	 
	Name: 	 	 
	Title:	 	 

 

    	 		 

     

    

 

EXHIBIT A

 

EXERCISE NOTICE

 

TO BE EXECUTED BY THE REGISTERED HOLDER
TO EXERCISE THIS 

WARRANT TO PURCHASE COMMON STOCK

 

PETROS PHARMACEUTICALS, INC.

 

The undersigned holder
hereby exercises the right to purchase of the shares of Common Stock (“Warrant Shares”) of Petros Pharmaceuticals, Inc.,
a Delaware corporation (the “Company”), evidenced by Series F Warrant No.           
(the “Warrant”). Capitalized terms used herein and not otherwise defined shall have the respective meanings
set forth in the Warrant.

 

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

 

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

 

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

 

2.           Payment
of Exercise Price. The Holder shall pay the Aggregate Exercise Price in the sum of $ to the Company in accordance with the
terms of the Warrant.

 

3.           Delivery
of Warrant Shares and Net Number of shares of Common Stock. The Company shall deliver to Holder, or its designee or agent as
specified below, shares of Common Stock in respect of the exercise contemplated hereby. Delivery shall be made to Holder, or for
its benefit, to the following address:

 

Date: ___________

 

 

 

Name of Registered Holder

 

	By:	 	 
	 	Name:	 
	 	Title:	 

 

	Account	 
	Number:	 
	 	 (if shares are delivered by electronic book entry transfer)

 

	Transaction Code
	Number:	 
	 	 (if shares are delivered by electronic book entry transfer)

 

    	 		 

     

    

 

EXHIBIT B

 

ACKNOWLEDGMENT

 

The Company hereby
acknowledges this Exercise Notice and hereby directs ______________ to issue the above indicated number of shares of Common Stock
in accordance with the Transfer Agent Instructions dated _________, 20__, from the Company and acknowledged and agreed to by _______________.

 

	 	PETROS PHARMACEUTICALS, INC.
	 	 
	 	By: 	                     
	 	Name: 
	 	Title:

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