Document:

AMENDMENT NO. 1 TO

COLFAX CORPORATION

REGISTRATION RIGHTS
AGREEMENT

February 18, 2013

 

This Amendment No.
1 (this “Amendment”), dated as of February 18, 2013 (the “Effective Date”), to that certain
Registration Rights Agreement (the “Agreement”), dated as of May 30, 2003, by and among Colfax Corporation,
a Delaware corporation (the “Company”), and Mitchell P. Rales and Steven M. Rales (together, the “Rales
Holders”) and the other Stockholders party thereto, is made by and among the Company and the Rales Holders. Capitalized
terms used herein without definition shall have the meanings given to such terms in the Agreement.

 

RECITALS:

 

Whereas,
pursuant to Sections 3 and 5 of the Agreement, the Company has granted the Rales Holders certain registration rights (the “Registration
Rights”) with respect to the Registrable Securities during the Registration Rights Period;

 

WHEREAS, the
Registration Rights expire on May 8, 2013 (the “Initial Expiration Date”);

 

Whereas,
the Rales Holders have agreed to refrain from exercising the Registration Rights prior to the Initial Expiration Date in consideration
for the extension by the Company of the Registration Rights Period.

 

Now,
Therefore, in consideration of the mutual promises and covenants set
forth herein and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties
hereby agree as follows:

 

		1.	Amendment to Section 1. The definition of “Registration Rights Period” set forth
in Section 1 of the Agreement is amended and restated in its entirety to read as follows:

 

“Registration
Rights Period” means for purposes of the registration rights granted under Section 3 and Section 5 hereof,
the period commencing on such date that is 180 days from the closing date of a Qualified Public Offering and ending on May 8, 2016.

 

		2.	Amendment to Section 17. The notice provision set forth in Section 17 of the Agreement is
amended and restated in its entirety to read as follows:

 

All notices,
demands, requests, consents or other communications to be given or delivered under or by reason of the provisions of this Agreement
shall be in writing and shall be deemed to have been given when (i) delivered personally to the recipient, (ii) sent by confirmed
facsimile or confirmed electronic mail transmission before 5:00 p.m. New York City time on a Business Day, and otherwise on the
next Business Day, or (iii) one Business Day after being sent to the recipient by reputable overnight courier service (charges
prepaid). Such notices, demands, requests, consents and other communications shall be sent (i) if to the Company, to Colfax Corporation,
8170 Maple Lawn Blvd., Suite 180, Fulton, MD 20759, facsimile number (301) 323-9001, and (ii) if to any Holder, to 2200 Pennsylvania
Avenue, NW, Suite 800W, Washington, DC 20037, or to such Holder at the address then on record with the Company or to such other
address of Holder designated in writing to the Company from time to time.

 

    	 

    	 

    

 

		3.	Waiver of Registration Rights. The Rales Holders agree not to exercise the Registration
Rights prior to the Initial Expiration Date.

 

		4.	Continuing Effect. With the exception of this Amendment, the remaining provisions of the
Agreement remain unchanged.

 

		5.	Interpretation of Amendment. In the event of any conflict, inconsistency or incongruity
between any provision of this Amendment and any provision of the Agreement, the provisions of this Amendment shall govern and control.

 

		6.	Counterparts. This Amendment may be executed in any number of counterparts, each of which
shall be deemed to be an original and all of which together shall be deemed to be one and the same instrument.

 

		7.	Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE
LAWS OF THE STATE OF DELAWARE WITHOUT GIVING EFFECT TO ITS PRINCIPLES OR RULES OF CONFLICT OF LAWS TO THE EXTENT SUCH PRINCIPLES
OR RULES WOULD REQUIRE OR PERMIT THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION.

 

[Signature page follows]

 

    	 

    	 

    

 

IN WITNESS WHEREOF, the parties have executed
this Amendment as of the Effective Date set forth above.

 

	 	COLFAX CORPORATION
	 	 
	 	By: /s/ Steven E. Simms
	 	 	 
	 	Name:	Steven E. Simms
	 	Title:	President and Chief Executive Officer

 

    	 

    	 

    

 

[Amendment No. 1 to Registration Rights
Agreement]

	 	RALES HOLDERS
	 	 
	 	/s/ Mitchell P. Rales
	 	Mitchell P. Rales
	 	 
	 	/s/ Steven M. Rales
	 	Steven M. Rales

 

[Amendment No. 1 to Registration Rights
Agreement]Exhibit 4.13

 

COMMON STOCK PURCHASE WARRANT

 

CORMEDIX
INC. 

 

	Warrant Shares: 400,000	Initial Exercise Date: February 19, 2013

  

 

THIS COMMON STOCK PURCHASE
WARRANT (the “Warrant”) certifies that, for value received, [__________________________] and its permitted assigns
(the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter
set forth, at any time on or after February 19, 2013 (the “Initial Exercise Date”) and on or prior to the
close of business on the five year anniversary of the Initial Exercise Date (the “Termination Date”) but not
thereafter, to subscribe for and purchase from CORMEDIX INC., a Delaware corporation (the “Company”), up to
400,000 shares (as subject to adjustment hereunder, the “Warrant Shares”) of Common Stock. The purchase
price of one share of Common Stock under this Warrant shall be equal to the Exercise Price, as defined in Section 2(b).

 

Section 1.Definitions.
Capitalized terms used and not otherwise defined herein shall have the meanings set forth in that certain Securities Purchase Agreement
(the “Purchase Agreement”), dated February 18, 2013, among the Company and the purchaser signatory thereto.

 

Section 2.Exercise.

 

a)Exercise
of the purchase rights represented by this Warrant may be made, in whole or in part, at any time or times on or after the Initial
Exercise Date and on or before the Termination Date by delivery to the Company (or such other office or agency of the Company as
it may designate by notice in writing to the registered Holder at the address of the Holder appearing on the books of the Company)
of a duly executed facsimile copy of the Notice of Exercise Form annexed hereto. Within three (3) Trading Days following the date
of exercise as aforesaid, the Holder shall deliver the aggregate Exercise Price for the shares specified in the applicable Notice
of Exercise by wire transfer or cashier’s check drawn on a United States bank unless the cashless exercise procedure specified
in Section 2(c) below is specified in the applicable Notice of Exercise. Notwithstanding anything herein to the contrary, the Holder
shall not be required to physically surrender this Warrant to the Company until the Holder has purchased all of the Warrant Shares
available hereunder and the Warrant has been exercised in full, in which case the Holder shall surrender this Warrant to the Company
for cancellation within three (3) Trading Days of the date the final Notice of Exercise is delivered to the Company. Partial exercises
of this Warrant resulting in purchases of a portion of the total number of Warrant Shares available hereunder shall have the effect
of lowering the outstanding number of Warrant Shares purchasable hereunder in an amount equal to the applicable number of Warrant
Shares purchased. The Holder and the Company shall maintain records showing the number of Warrant Shares purchased and the date
of such purchases. The Company shall deliver any objection to any Notice of Exercise Form within one (1) Business Day of receipt
of such notice. The Holder and any assignee, by acceptance of this Warrant, acknowledge and agree that, by reason of the provisions
of this paragraph, following the purchase of a portion of the Warrant Shares hereunder, the number of Warrant Shares available
for purchase hereunder at any given time may be less than the amount stated on the face hereof.

    	 

    	 

    

 

b)Exercise
Price. The exercise price per share of the Common Stock under this Warrant shall be $1.50, subject to adjustment hereunder
(the “Exercise Price”).

 

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

 

	 	(A) =	the VWAP on the Trading Day immediately preceding the date on which Holder elects to exercise this Warrant by means of a “cashless exercise,” as set forth in the applicable Notice of Exercise;
	 	 	 
	 	(B) =	the Exercise Price of this Warrant, as adjusted hereunder; and
	 	 	 
	 	(X) =	the number of Warrant Shares that would be issuable upon exercise of this Warrant in accordance with the terms of this Warrant if such exercise were by means of a cash exercise rather than a cashless exercise.

 

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

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

 

d)Mechanics
of Exercise.

 

i.Delivery
of Warrant Shares Upon Exercise. The Company shall use best efforts to cause the Warrant Shares purchased hereunder to be transmitted
by the Transfer Agent to the Holder by crediting the account of the Holder’s prime broker with The Depository Trust Company
through its Deposit or Withdrawal at Custodian system (“DWAC”) if the Company is then a participant in such
system and either (A) there is an effective registration statement permitting the issuance of the Warrant Shares to or resale of
the Warrant Shares by Holder or (B) this Warrant is being exercised via cashless exercise, and otherwise by physical delivery to
the address specified by the Holder in the Notice of Exercise by the date that is three (3) Trading Days after the latest of (A)
the delivery to the Company of the Notice of Exercise, (B) surrender of this Warrant (if required) and (C) payment of the aggregate
Exercise Price as set forth above (including by cashless exercise, if permitted) (such date, the “Warrant Share Delivery
Date”). The Warrant Shares shall be deemed to have been issued, and Holder or any other person so designated to be named
therein shall be deemed to have become a holder of record of such shares for all purposes, as of the date the Warrant has been
exercised, with payment to the Company of the Exercise Price (or by cashless exercise, if permitted) and all taxes required to
be paid by the Holder, if any, pursuant to Section 2(d)(vi) prior to the issuance of such shares, having been paid. If the Company
fails for any reason to deliver to the Holder the Warrant Shares subject to a Notice of Exercise by the Warrant Share Delivery
Date, the Company shall pay to the Holder, in cash, as liquidated damages and not as a penalty, for each $1,000 of Warrant Shares
subject to such exercise (based on the VWAP of the Common Stock on the date of the applicable Notice of Exercise), $10 per Trading
Day (increasing to $20 per Trading Day on the fifth Trading Day after such liquidated damages begin to accrue) for each Trading
Day after such Warrant Share Delivery Date until such Warrant Shares are delivered or Holder rescinds such exercise.

 

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

 

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

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

 

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

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

 

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

 

e)Holder’s
Exercise Limitations. The Company shall not effect any exercise of this Warrant, and a Holder shall not have the right to exercise
any portion of this Warrant, pursuant to Section 2 or otherwise, to the extent that after giving effect to such issuance after
exercise as set forth on the applicable Notice of Exercise, the Holder (together with the Holder’s Affiliates, and any other
Persons acting as a group together with the Holder or any of the Holder’s Affiliates), would beneficially own in excess of
the Beneficial Ownership Limitation (as defined below).  For purposes of the foregoing sentence, the number of shares of Common
Stock beneficially owned by the Holder and its Affiliates shall include the number of shares of Common Stock issuable upon exercise
of this Warrant with respect to which such determination is being made, but shall exclude the number of shares of Common Stock
which would be issuable upon (i) exercise of the remaining, nonexercised portion of this Warrant beneficially owned by the Holder
or any of its Affiliates and (ii) exercise or conversion of the unexercised or nonconverted portion of any other securities of
the Company (including, without limitation, any other Common Stock Equivalents) subject to a limitation on conversion or exercise
analogous to the limitation contained herein beneficially owned by the Holder or any of its Affiliates.  Except as set forth
in the preceding sentence, for purposes of this Section 2(e), beneficial ownership shall be calculated in accordance with Section
13(d) of the Exchange Act and the rules and regulations promulgated thereunder, it being acknowledged by the Holder that the Company
is not representing to the Holder that such calculation is in compliance with Section 13(d) of the Exchange Act and the Holder
is solely responsible for any schedules required to be filed in accordance therewith. To the extent that the limitation contained
in this Section 2(e) applies, the determination of whether this Warrant is exercisable (in relation to other securities owned by
the Holder together with any Affiliates) and of which portion of this Warrant is exercisable shall be in the sole discretion of
the Holder, and the submission of a Notice of Exercise shall be deemed to be the Holder’s determination of whether this Warrant
is exercisable (in relation to other securities owned by the Holder together with any Affiliates) and of which portion of this
Warrant is exercisable, in each case subject to the Beneficial Ownership Limitation, and the Company shall have no obligation to
verify or confirm the accuracy of such determination. In addition, a determination as to any group status as contemplated above
shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder.
For purposes of this Section 2(e), in determining the number of outstanding shares of Common Stock, a Holder may rely on the number
of outstanding shares of Common Stock as reflected in (A) the Company’s most recent periodic or annual report filed with
the Commission, as the case may be, (B) a more recent public announcement by the Company or (C) a more recent written notice by
the Company or the Transfer Agent setting forth the number of shares of Common Stock outstanding.  Upon the written or oral
request of a Holder, the Company shall within two Trading Days confirm orally and in writing to the Holder the number of shares
of Common Stock then outstanding.  In any case, the number of outstanding shares of Common Stock shall be determined after
giving effect to the conversion or exercise of securities of the Company, including this Warrant, by the Holder or its Affiliates
since the date as of which such number of outstanding shares of Common Stock was reported. The “Beneficial Ownership Limitation”
shall be 3.99% of the number of shares of the Common Stock outstanding immediately after giving effect to the issuance of shares
of Common Stock issuable upon exercise of this Warrant. The provisions of this paragraph shall be construed and implemented in
a manner otherwise than in strict conformity with the terms of this Section 2(e) to correct this paragraph (or any portion hereof)
which may be defective or inconsistent with the intended Beneficial Ownership Limitation herein contained or to make changes or
supplements necessary or desirable to properly give effect to such limitation. The limitations contained in this paragraph shall
apply to a successor holder of this Warrant.

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Section 3.Certain
Adjustments.

 

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

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b)[RESERVED].

 

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

 

d)Cash
Distributions. If at any time the Company declares a distribution to all holders of Common Stock in cash (a “Cash
Distribution”) (excluding any distribution in connection with a Fundamental Transaction, as defined in Section 3(e),
or the liquidation, dissolution or winding up of the Company, whether voluntary or involuntary), then the number of shares issuable
upon exercise of this Warrant shall be increased by multiplying such number by a fraction, the numerator of which shall be the
aggregate VWAP on the Trading Day immediately preceding such record date of all Common Stock outstanding at the close of business
on such record date, and the denominator of which shall be (i) the aggregate VWAP on the Trading Day immediately preceding such
record date of all Common Stock outstanding at the close of business on such record date minus (ii) the amount of cash to be distributed.

 

In the event
that any distribution of the type described in this Clause 3(d) is declared but not so paid or made, the number of shares issuable
upon exercise of this Warrant shall again be adjusted to be the number of shares issuable upon exercise of this Warrant that would
then be in effect if such distribution had not been declared.

 

If the amount
of cash to be distributed under this Clause 3(d) is equal to or greater than the aggregate VWAP on the Trading Day immediately
preceding such record date of all Common Stock on such record date, in lieu of the foregoing adjustment, an amount (the “Aggregate
Warrant Exercise Cash Distribution Amount”) equal to (x) the total amount of the Cash Distribution multiplied by (y)
(A) the maximum number of shares of Common Stock that could be issued if this Warrant were exercised in accordance with this Agreement,
and divided by (B) the sum of (I) the maximum number of shares of Common Stock that could be issued if this Warrant were exercised
plus (II) the number of shares of Common Stock outstanding at the close of business on such record date, shall not be distributed,
but instead shall be placed in a segregated account and paid to the Holder upon exercise of this Warrant after such record date.

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

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

 

g)Notice
to Holder.

 

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

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

 

Section 4.Transfer
of Warrant.

 

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

    	10

    	 

    
 

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

 

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

 

Section 5.Miscellaneous.

 

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

 

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

 

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

    	11

    	 

    
 

d)Authorized
Shares.

 

The Company covenants
that, during the period the Warrant is outstanding, it will reserve from its authorized and unissued Common Stock a sufficient
number of shares to provide for the issuance of the Warrant Shares upon the exercise of any purchase rights under this Warrant.
If at any time the number of authorized but unissued shares of Common Stock shall not be sufficient to effect in full the exercise
of this Warrant, in addition to such other remedies as shall be available to the Holder, the Company will promptly take such corporate
action as may, in the opinion of its counsel, be necessary to increase the number of authorized but unissued shares of Common Stock
to such number of shares as shall be sufficient for such purposes, including without limitation, using its best efforts to obtain
the requisite shareholder approval necessary to increase the number of authorized shares of Common Stock. The Company further covenants
that its issuance of this Warrant shall constitute full authority to its officers who are charged with the duty of executing stock
certificates to execute and issue the necessary Warrant Shares upon the exercise of the purchase rights under this Warrant. The
Company will take all such reasonable action as may be necessary to assure that such Warrant Shares may be issued as provided herein
without violation of any applicable law or regulation, or of any requirements of the Trading Market upon which the Common Stock
may be listed. The Company covenants that all Warrant Shares which may be issued upon the exercise of the purchase rights represented
by this Warrant will, upon exercise of the purchase rights represented by this Warrant and payment for such Warrant Shares in accordance
herewith, be duly authorized, validly issued, fully paid and nonassessable and free from all taxes, liens and charges created by
the Company in respect of the issue thereof (other than taxes in respect of any transfer occurring contemporaneously with such
issue).

 

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

 

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

 

e)Registration
Rights.The Holder is entitled to the benefit of such registration rights in respect of the shares issuable upon exercise
of this Warrant as are set forth in the Purchase Agreement, including the right to assign such rights pursuant to Section 4 hereof.

    	12

    	 

    
 

f)Jurisdiction.
All questions concerning the construction, validity, enforcement and interpretation of this Warrant shall be determined in accordance
with the provisions of the Purchase Agreement.

 

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

 

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

 

i)Notices.
Any notice, request or other document required or permitted to be given or delivered to the Holder by the Company shall be delivered
in accordance with the notice provisions of the Purchase Agreement.

 

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

 

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

 

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

    	13

    	 

    
 

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

 

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

 

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

 

 

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

 

(Signature Page Follows)

    	14

    	 

    
 

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

 

 

	 	CORMEDIX INC. 
	 	 	 
	 	 	 
	 	By:	 
	 	 	Name:
	 	 	Title:

 

    	[Signature Page to Common Stock Purchase Warrant]

    	 

    
 

NOTICE OF EXERCISE

 

To:CORMEDIX
INC. 

 

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

 

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

 

 ̈ in lawful
money of the United States; or

 

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

 

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

 

	 	 	 
	 	 	 

 

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

 

	 	 	 
	 	 	 
	 	 	 
	 	 	 
	 	 	 

 

 

[SIGNATURE
OF HOLDER]

 

Name of Investing Entity:

Signature of Authorized Signatory of Investing
Entity:

Name of Authorized Signatory:

Title of Authorized Signatory:

	Date:	 

 

    	 

    	 

    
 

ASSIGNMENT FORM

 

(To assign the foregoing warrant, execute

this form and supply required information.

Do not use this form to exercise the warrant.)

 

 

 

FOR VALUE RECEIVED, [____]
all of or [_______] shares of the foregoing Warrant and all rights evidenced thereby are hereby assigned to

 

 

	 	 	whose address is

 

	 	.
	 	 
	 	 
	 	 
	 	.

 

Dated: ______________,
_______

 

 

	 	Holder’s Signature:	 	 
	 	 	 	 
	 	Holder’s Address:	 	 
	 	 	 	 
	 	 	 	 

 

 

 

	Signature Guaranteed:	 	 

 

 

NOTE: The signature to this Assignment
Form must correspond with the name as it appears on the face of the Warrant, without alteration or enlargement or any change whatsoever,
and must be guaranteed by a bank or trust company. Officers of corporations and those acting in a fiduciary or other representative
capacity should file proper evidence of authority to assign the foregoing Warrant.

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