UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ----------------------

                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934

                         Keryx Biopharmaceuticals, Inc.
                                (Name of Issuer)

                         Common Stock, $0.001 par value
                         (Title of Class of Securities)

                                    492515101
                                 (CUSIP Number)

                               September 25, 2009
             (Date of Event Which Requires Filing of this Statement)


     Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
     [ ]  Rule 13d-1(b)
     [X]  Rule 13d-1(c)
     [ ]  Rule 13d-1(d)





----------------
     *The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter the disclosures provided in a prior cover page.

     The information required in the remainder of this cover page shall not be
deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act
of 1934 ("Act") or otherwise subject to the liabilities of that section of the
Act but shall be subject to all other provisions of the Act (however, see the
Notes).









                               Page 1 of 10 Pages





CUSIP No. 492515101                   13G                  Page 2 of 10 Pages
-----------------------------------------------------------------------
     (1) NAMES OF REPORTING PERSONS

            Hartz Capital Investments, LLC
-----------------------------------------------------------------------
     (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
         (see instructions)
                                                               (a) [X]
                                                               (b) [ ]
-----------------------------------------------------------------------
     (3) SEC USE ONLY
-----------------------------------------------------------------------
     (4) CITIZENSHIP OR PLACE OF ORGANIZATION

            New Jersey
-----------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         --------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                    3,917,574 shares of Common Stock
OWNED BY       --------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      --------------------------------------------------------

PERSON WITH:  (8)   SHARED DISPOSITIVE POWER
                    3,917,574 shares of Common Stock
-----------------------------------------------------------------------
     (9)     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
             3,917,574 shares of Common Stock
-----------------------------------------------------------------------
     (10)    CHECK BOX IF THE AGGREGATE AMOUNT
             IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions)
                                                                    [ ]
-----------------------------------------------------------------------
     (11)    PERCENT OF CLASS REPRESENTED
             BY AMOUNT IN ROW (9)
             7.01%
-----------------------------------------------------------------------
     (12)    TYPE OF REPORTING PERSON (see instructions)
             OO
-----------------------------------------------------------------------





CUSIP No. 492515101                   13G                  Page 3 of 10 Pages
-----------------------------------------------------------------------
     (1) NAMES OF REPORTING PERSONS

            Empery Asset Management, LP
-----------------------------------------------------------------------
     (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
         (see instructions)
                                                               (a) [X]
                                                               (b) [ ]
-----------------------------------------------------------------------
     (3) SEC USE ONLY
-----------------------------------------------------------------------
     (4) CITIZENSHIP OR PLACE OF ORGANIZATION

            Delaware
-----------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         --------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                    4,348,769 shares of Common Stock
OWNED BY       --------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      --------------------------------------------------------

PERSON WITH:  (8)   SHARED DISPOSITIVE POWER
                    4,348,769 shares of Common Stock
-----------------------------------------------------------------------
      (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
             4,348,769 shares of Common Stock
-----------------------------------------------------------------------
     (10)    CHECK BOX IF THE AGGREGATE AMOUNT
             IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions)
                                                                    [ ]
-----------------------------------------------------------------------
     (11)    PERCENT OF CLASS REPRESENTED
             BY AMOUNT IN ROW (9)
             7.78%
-----------------------------------------------------------------------
     (12)    TYPE OF REPORTING PERSON (see instructions)
             PN
-----------------------------------------------------------------------





CUSIP No. 492515101                   13G                  Page 4 of 10 Pages
-----------------------------------------------------------------------
     (1) NAMES OF REPORTING PERSONS

            Ryan M. Lane
-----------------------------------------------------------------------
     (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
         (see instructions)
                                                               (a) [X]
                                                               (b) [ ]
-----------------------------------------------------------------------
     (3) SEC USE ONLY
-----------------------------------------------------------------------
     (4) CITIZENSHIP OR PLACE OF ORGANIZATION

            United States
-----------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         --------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                    4,348,769 shares of Common Stock
OWNED BY       -------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      -------------------------------------------------------

PERSON WITH:   (8)  SHARED DISPOSITIVE POWER
                    4,348,769 shares of Common Stock
-----------------------------------------------------------------------
     (9)     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
             4,348,769 shares of Common Stock
----------------------------------------------------------------
     (10)    CHECK BOX IF THE AGGREGATE AMOUNT
             IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions)
                                                                    [ ]
-----------------------------------------------------------------------
     (11)    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
             7.78%
-----------------------------------------------------------------------
     (12)    TYPE OF REPORTING PERSON (see instructions)
             IN
-----------------------------------------------------------------------






CUSIP No. 492515101                   13G                  Page 5 of 10 Pages
-----------------------------------------------------------------------
     (1) NAMES OF REPORTING PERSONS

            Martin D. Hoe
-----------------------------------------------------------------------
     (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
         (see instructions)
                                                               (a) [X]
                                                               (b) [ ]
-----------------------------------------------------------------------
     (3) SEC USE ONLY
-----------------------------------------------------------------------
     (4) CITIZENSHIP OR PLACE OF ORGANIZATION

            United States
-----------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         --------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                    4,348,769 shares of Common Stock
OWNED BY       --------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      --------------------------------------------------------

PERSON WITH:  (8)   SHARED DISPOSITIVE POWER
                    4,348,769 shares of Common Stock
-----------------------------------------------------------------------
     (9)            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                    4,348,769 shares of Common Stock
-----------------------------------------------------------------------
     (10)    CHECK BOX IF THE AGGREGATE AMOUNT
             IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions)
                                                                    [ ]
-----------------------------------------------------------------------
     (11)    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
             7.78%
-----------------------------------------------------------------------
     (12)    TYPE OF REPORTING PERSON (see instructions)
             IN
-----------------------------------------------------------------------





CUSIP No. 492515101                   13G                  Page 6 of 10 Pages

Item 1.

(a)  Name of Issuer

            Keryx Biopharmaceuticals, Inc., a Delaware corporation (the
"Company")

(b)  Address of Issuer's Principal Executive Offices

            750 Lexington Avenue
            New York, New York 10022

Item 2(a).  Name of Person Filing

         This statement is filed by the entities and persons listed below, who
         are collectively referred to herein as "Reporting Persons," with
         respect to the shares of Common Stock (as defined in Item 2(d) below)
         of the Company:

         MANAGED ACCOUNT

         (i)    Hartz Capital Investments, LLC, with respect to the shares of
                Common Stock held by it in an account managed by the Investment
                Manager (as defined below) (the "Managed Account") and with
                respect to the shares of Common Stock held by it in an account
                not managed by the Investment Manager.

         INVESTMENT MANAGER

         (ii)   Empery Asset Management, LP (the "Investment Manager"), with
                respect to the shares of Common Stock held by the Managed
                Account and certain funds to which the Investment Manager serves
                as investment manager (collectively, the "Empery Funds").

         REPORTING INDIVIDUALS

         (iii)  Mr. Ryan M. Lane ("Mr. Lane"), with respect to the shares of
                Common Stock held by the Empery Funds.

         (iv)   Mr. Martin D. Hoe ("Mr. Hoe"), with respect to the shares of
                Common Stock held by the Empery Funds.

         The Investment Manager serves as the investment manager to each of the
         Empery Funds. Each of the Reporting Individuals is a Managing Member of
         Empery AM GP, LLC (the "General Partner"), the general partner of the
         Investment Manager.

Item 2(b).  Address of Principal Business Office or, if none, Residence

         The address of the principal business office of each of the Reporting
Persons is:

         120 Broadway, Suite 1019
         New York, New York 10271

Item 2(c).  Citizenship

         Citizenship is set forth in Row 4 of the cover page for each Reporting
         Person hereto and is incorporated herein by reference for each such
         Reporting Person.



CUSIP No. 492515101                   13G                  Page 7 of 10 Pages

Item 2(d)   Title of Class of Securities

            Common Stock, $0.001 par value (the "Common Stock")

Item 2(e)   CUSIP Number

            492515101

Item 3. If this statement is filed pursuant to ss.ss.240.13d-1(b) or
240.13d-2(b) or (c), check whether the person filing is a:

(a) [ ] Broker or dealer registered under Section 15 of the Act (15 U.S.C.
        78o).

(b) [ ] Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined in Section 3(a)(19) of the Act (15
        U.S.C. 78c).

(d) [ ] Investment company registered under Section 8 of the Investment
        Company Act of 1940 (15 U.S.C. 80a-8).

(e) [ ] An investment adviser in accordance with ss.240.13d-1(b)(1)(ii)(E);

(f) [ ] An employee benefit plan or endowment fund in accordance with
        ss.240.13d-1(b)(1)(ii)(F);

(g) [ ] A parent holding company or control person in accordance with
        ss.240.13d-1(b)(1)(ii)(G);

(h) [ ] A savings association as defined in Section 3(b) of the Federal Deposit
        Insurance Act (12 U.S.C. 1813);

(i) [ ] A church plan that is excluded from the definition of an investment
        company under Section 3(c)(14) of the Investment Company Act of 1940 (15
        U.S.C. 80a-3);

(j) [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J).

Item 4.   Ownership

            Provide the following information regarding the aggregate number and
percentage of the class of securities of the issuer identified in Item 1.

The information as of the filing date required by Items 4(a) - (c) is set forth
in Rows 5 - 11 of the cover page for each Reporting Person hereto and is
incorporated herein by reference for each such Reporting Person. The Company's
Current Report on Form 8-K filed on October 1, 2009 indicates that the total
number of outstanding shares of Common Stock after giving effect to the offering
described therein is 55,881,356. The percentages set forth on Row 11 of the
cover page for each Reporting Person is based on the Company's outstanding
shares of Common Stock.

In addition to the reported shares of Common Stock, the Managed Account holds
warrants to purchase 1,470,000 shares of Common Stock and a certain fund managed
by the Investment Manager holds warrants to purchase 196,000 shares of Common
Stock. However, pursuant to the terms of the reported warrants, the Reporting
Persons cannot exercise any of these warrants until such time as the Reporting




CUSIP No. 492515101                   13G                  Page 8 of 10 Pages

Persons would not beneficially own, after any such exercise, more than 4.9% of
the outstanding shares of Common Stock.

The Investment Manager, which serves as the investment manager to the Empery
Funds, may be deemed to be the beneficial owner of all shares of Common Stock
owned by the Empery Funds. Each of the Reporting Individuals, as Managing
Members of the General Partner of the Investment Manager with the power to
exercise investment discretion, may be deemed to be the beneficial owner of all
shares of Common Stock owned by the Empery Funds. Each of the Investment Manager
and the Reporting Individuals hereby disclaims any beneficial ownership of any
such shares of Common Stock, except for their pecuniary interest therein.

Item 5.  Ownership of Five Percent or Less of a Class

            If this statement is being filed to report the fact that as of the
date hereof the reporting person has ceased to be the beneficial owner of more
than five percent of the class of securities, check the following: [ ]

Item 6.  Ownership of More than Five Percent on Behalf of Another Person

            Not applicable.

Item  7.   Identification and Classification of the Subsidiary Which Acquired
           the Security Being Reported on by the Parent Holding Company

            Not applicable.

Item 8.  Identification and Classification of Members of the Group

         See Exhibit I.

Item 9.  Notice of Dissolution of Group

            Not applicable.

Item 10. Certification

            By signing below each of the undersigned certifies that, to the best
of its knowledge and belief, the securities referred to above were not acquired
and are not held for the purpose of or with the effect of changing or
influencing the control of the issuer of the securities and were not acquired
and are not held in connection with or as a participant in any transaction
having that purpose or effect.

Exhibits:

Exhibit I: Joint Filing Agreement, dated as of October 1, 2009, by and among
Hartz Capital Investments, LLC, Empery Asset Management, LP, Ryan M. Lane and
Martin D. Hoe.



CUSIP No. 492515101                   13G                  Page 9 of 10 Pages

                                   SIGNATURES

         After reasonable inquiry and to the best of its knowledge and belief,
each of the undersigned certifies that the information with respect to it set
forth in this statement is true, complete, and correct.

Dated: October 1, 2009

EMPERY ASSET MANAGEMENT, LP                 HARTZ CAPITAL INVESTMENTS LLC

By: EMPERY AM GP, LLC, its General          By: EMPERY ASSET MANAGEMENT, LP
    Partner                                     its Authorized Agent

                                            By: EMPERY AM GP, LLC, its General
                                                Partner
By: /s/ Ryan M. Lane
    ------------------------------
Name:  Ryan M. Lane
Title: Managing Member                      By: /s/ Ryan M. Lane
                                                -------------------------------
                                            Name:  Ryan M. Lane
                                            Title: Managing Member



/s/ Martin D. Hoe                           /s/ Ryan M. Lane
---------------------------------           -----------------------------------
MARTIN D. HOE                               RYAN M. LANE












CUSIP No. 492515101                   13G                  Page 10 of 10 Pages


                                    EXHIBIT I

                             JOINT FILING AGREEMENT

This will confirm the agreement by and among the undersigned that the Schedule
13G filed with the Securities and Exchange Commission on or about the date
hereof with respect to the beneficial ownership by the undersigned of the common
stock, par value $0.001 per share of Keryx Biopharmaceuticals, Inc. is being
filed, and all amendments thereto will be filed, on behalf of each of the
persons and entities named below in accordance with Rule 13d-1(k) under the
Securities Exchange Act of 1934, as amended. This Agreement may be executed in
two or more counterparts, each of which shall be deemed an original, but all of
which together shall constitute one and the same instrument.

Dated as of October 1, 2009

EMPERY ASSET MANAGEMENT, LP           Hartz Capital Investments LLC

By: EMPERY AM GP, LLC, its General    By: EMPERY ASSET MANAGEMENT, LP
    Partner                               its Authorized Agent

                                      By: EMPERY AM GP, LLC, its
                                          General Partner
By: /s/ Ryan M. Lane
    ------------------------------
Name:  Ryan M. Lane
Title: Managing Member                By: /s/ Ryan M. Lane
                                          ----------------------------
                                      Name:  Ryan M. Lane
                                      Title: Managing Member



/s/ Martin D. Hoe                     /s/ Ryan M. Lane
----------------------------          ----------------------------
MARTIN D. HOE                         RYAN M. LANE