UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13G

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934

                               (Amendment No. 6)*

                       KRATON PERFORMANCE POLYMERS, INC.
 -------------------------------------------------------------------------------
                                (Name of Issuer)

                          COMMON STOCK, $0.01 Par Value
 -------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   50077C106
 -------------------------------------------------------------------------------
                                 (CUSIP Number)

                               September 30, 2011
 -------------------------------------------------------------------------------
             (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 DISCLOSURES PROVIDED IN A PRIOR COVER PAGE.

     THE INFORMATION REQUIRED ON THE REMAINDER OF THIS COVER PAGE SHALL NOT
BE DEEMED TO BE "FILED" FOR THE PURPOSE OF SECTION 18 OF THE SECURITIES
EXCHANGE ACT OF 1934 (THE "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. 50077C106
          ---------

- --------------------------------------------------------------------------
  1      NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

         Bay Resource Partners, L.P.
- --------------------------------------------------------------------------
  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
- --------------------------------------------------------------------------
                           5    SOLE VOTING POWER

           NUMBER OF                 NONE
            SHARES
          BENEFICIALLY     -------------------------------------------------
           OWNED BY        6    SHARED VOTING POWER
             EACH
           REPORTING                605,200
            PERSON         -------------------------------------------------
             WITH          7    SOLE DISPOSITIVE POWER

                                     NONE
                           -------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                    605,200
- --------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                                    605,200
- --------------------------------------------------------------------------
  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   1.9%

- --------------------------------------------------------------------------
  12    TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
             PN
- --------------------------------------------------------------------------

                                  Page 2 of 10 Pages





CUSIP NO. 50077C106
          ---------

- --------------------------------------------------------------------------
  1      NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

         Bay II Resource Partners, L.P.
- --------------------------------------------------------------------------
  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
- --------------------------------------------------------------------------
                           5    SOLE VOTING POWER

           NUMBER OF                NONE
            SHARES
          BENEFICIALLY     -------------------------------------------------
           OWNED BY        6    SHARED VOTING POWER
             EACH
           REPORTING                 1,148,100
            PERSON         -------------------------------------------------
             WITH          7    SOLE DISPOSITIVE POWER

                                     NONE
                           -------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                     1,148,100
- --------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                                     1,148,100
- --------------------------------------------------------------------------

  10    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
        [ ]  (SEE INSTRUCTIONS)

- --------------------------------------------------------------------------
  11    PERCENTAGE OF CLASS REPRESENTED BY AMOUNT IN ROW 9   3.6%

- --------------------------------------------------------------------------
  12    TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
             PN
- --------------------------------------------------------------------------

                                  Page 3 of 10 Pages




CUSIP NO. 50077C106
          ---------

- --------------------------------------------------------------------------
  1      NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

           Bay Resource Partners Offshore Master Fund, L.P.
- --------------------------------------------------------------------------
  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

          Cayman Islands
- --------------------------------------------------------------------------
                           5    SOLE VOTING POWER

           NUMBER OF                NONE
            SHARES
          BENEFICIALLY     -------------------------------------------------
           OWNED BY        6    SHARED VOTING POWER
             EACH
           REPORTING               2,296,655
            PERSON         -------------------------------------------------
             WITH          7    SOLE DISPOSITIVE POWER

                                    NONE
                           -------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                   2,296,655
- --------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                                   2,296,655
- --------------------------------------------------------------------------
  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    7.2%

- --------------------------------------------------------------------------
  12    TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
             PN
- --------------------------------------------------------------------------

                                  Page 4 of 10 Pages






CUSIP NO. 50077C106
          ---------

- --------------------------------------------------------------------------
  1      NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

         GMT Capital Corp.
- --------------------------------------------------------------------------
  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

          State of Georgia
- --------------------------------------------------------------------------
                           5    SOLE VOTING POWER

           NUMBER OF                NONE
            SHARES
          BENEFICIALLY     -------------------------------------------------
           OWNED BY        6    SHARED VOTING POWER
             EACH
           REPORTING                 4,230,355
            PERSON         -------------------------------------------------
             WITH          7    SOLE DISPOSITIVE POWER

                                    NONE
                           -------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                     4,230,355
- --------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                                     4,230,355
- --------------------------------------------------------------------------
  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   13.2%

- --------------------------------------------------------------------------
  12    TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
             CO

- --------------------------------------------------------------------------

                                  Page 5 of 10 Pages


CUSIP NO. 50077C106
          ---------

- --------------------------------------------------------------------------
  1      NAMES OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

         Thomas E. Claugus
- --------------------------------------------------------------------------
  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
- --------------------------------------------------------------------------
                           5    SOLE VOTING POWER

           NUMBER OF                 120,200
            SHARES
          BENEFICIALLY     -------------------------------------------------
           OWNED BY        6    SHARED VOTING POWER
             EACH
           REPORTING                 4,230,355
            PERSON         -------------------------------------------------
             WITH          7    SOLE DISPOSITIVE POWER

                                     120,200
                           -------------------------------------------------
                           8    SHARED DISPOSITIVE POWER

                                    4,230,355
- --------------------------------------------------------------------------
  9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                                    4,350,555
- --------------------------------------------------------------------------
  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   13.6%

- --------------------------------------------------------------------------
  12    TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

             IN
- --------------------------------------------------------------------------


                                  Page 6 of 10 Pages




Explanatory Note:

            This Amendment No. 6 amends and supplements Amendment No. 5
            (Amendment No. 5) to Schedule 13G filed with the Securities
            and Exchange Commission (SEC) on August 30, 2011, which amended
            and supplemented Amendment No. 4 (Amendment No. 4) to Schedule
            13G filed with the SEC on July 13, 2011, which amended and
            supplemented Amendment No. 3 (Amendment No. 3) to Schedule 13G
            filed with the SEC on December 15, 2010, which amended and
            supplemented Amendment No. 2 (Amendment No. 2) to Schedule 13G
            filed with the SEC on November 23, 2010, which amended and
            supplemented the Amendment No. 1 to Schedule 13G filed with
            the SEC on October 8, 2010, which amended and supplemented the
            Schedule 13G originally filed with the SEC on August 18, 2010 by
            the Reporting Persons.

ITEM 1(A)   NAME OF ISSUER:
            -----------------
            KRATON PERFORMANCE POLYMERS, INC.

ITEM 1(B)   ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:
            ------------------------------------------------
            15710 John F. Kennedy Blvd.
            Suite 300
            Houston, TX 77032

ITEM 2(a)   NAME OF PERSON FILING:
            -----------------------

             (i) Bay Resource Partners, L.P. (Bay), with respect to
                 shares of Common Stock directly owned by it.

            (ii) Bay II Resource Partners, L.P. (Bay II), with
                 respect to shares of Common Stock directly owned by it.

           (iii) Bay Resource Partners Offshore Master Fund, L.P. (Offshore
                 Fund) with respect to shares of Common Stock directly
                 owned by it, as the successor to Bay Resource Partners
                 Offshore Fund, Ltd.

            (iv) GMT Capital Corp. (GMT Capital) with respect to
                 shares of Common Stock beneficially owned by it.

             (v) Thomas E. Claugus, (Mr. Claugus), with respect to the
                 shares of Common Stock directly owned by him and
                 directly owned by each of Bay, Bay II, and the
                 Offshore Fund and GMT Capital separate account clients.

                 The foregoing persons are hereinafter sometimes
                 collectively referred to as the Reporting Persons. Any
                 disclosures herein with respect to persons other than the
                 Reporting Persons are made on information and believe after
                 making inquiry to the appropriate party.


ITEM 2(b)   ADDRESS OF PRINCIPAL BUSINESS OFFICE, OR IF NONE, RESIDENCE:
            ------------------------------------------------------------
                 The address of the business office of each of the Reporting
                                  Page 7 of 10 Pages

            Form 10-Q filing for the quarterly period ended June 30, 2011,
            filed with the SEC on August 4, 2011. This Statement is being
            filed with respect to an aggregate of 4,350,555 shares of Common
            Stock, resulting in beneficial ownership of Common Stock as
            follows:

      1. Bay Resource Partners, L.P.,
          (a) Amount Beneficially owned: 605,200
          (b) Percent of Class: 1.9%
          (c) (i)  Sole power to vote or direct the vote: -0-
              (ii) Shared power to vote or direct the vote: 605,200
             (iii) Sole power to dispose or direct the disposition: -0-
              (iv) Shared power to dispose or direct the disposition: 605,200


        2. Bay II Resource Partners, L.P.
           (a) Amount Beneficially owned: 1,148,100
           (b) Percent of Class: 3.6%
           (c) (i) Sole power to vote or direct the vote: -0-
              (ii) Shared power to vote or direct the vote: 1,148,100
             (iii) Sole power to dispose or direct the disposition: -0-
              (iv) Shared power to dispose or direct the disposition: 1,148,100

        3. Bay Resource Partners Offshore Master Fund, L.P.
           (a) Amount Beneficially owned: 2,296,655
           (b) Percent of Class: 7.2%
           (c) (i) Sole power to vote or direct the vote: -0-
              (ii) Shared power to vote or direct the vote: 2,296,655
             (iii) Sole power to dispose or direct the disposition: -0-
              (iv) Shared power to dispose or direct the disposition:
                   2,296,655

        4. GMT Capital Corp.
           (a) Amount Beneficially owned: 4,230,355
           (b) Percent of Class: 13.2%
           (c) (i) Sole power to vote or direct the vote: -0-
              (ii) Shared power to vote or direct the vote: 4,230,355
             (iii) Sole power to dispose or direct the disposition: -0-
              (iv) Shared power to dispose or direct the disposition:
                   4,230,355

        5. Thomas E. Claugus
           (a) Amount Beneficially owned: 4,350,555
           (b) Percent of Class: 13.6%
           (c) (i) Sole power to vote or direct the vote: 120,200
              (ii) Shared power to vote or direct the vote: 4,230,355
             (iii) Sole power to dispose or direct the disposition: 120,200
              (iv) Shared power to dispose or direct the disposition:
                   4,230,355

ITEM 5.     OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.
            ---------------------------------------------
            N/A

ITEM 6.     OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER
            PERSON.
            --------------------------------------------------------

                                  Page 9 of 10 Pages

            GMT Capital, the general partner of Bay and Bay II, has the
            power to direct the affairs of Bay and Bay II, including
            the voting and disposition of shares. As the discretionary
            investment manager of the Offshore Fund and certain other
            accounts, GMT Capital has power to direct the voting and
            disposition of shares held by the Offshore Fund and such
            accounts. Mr. Claugus is the President of GMT Capital and
            in that capacity directs the operations of each of Bay
            and Bay II and the voting and disposition of shares held
            by the Offshore Fund and separate client accounts managed
            by GMT Capital.

ITEM 7.     IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH
            ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT
            HOLDING COMPANY OR CONTROL PERSON.
            ---------------------------------------------------------
            N/A

ITEM 8.     IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.
            ----------------------------------------------------------
            See Item 2.

ITEM 9.     NOTICE OF DISSOLUTION OF GROUP.
            ---------------------------------
            N/A


ITEM 10.    CERTIFICATION.

            By signing below I certify that, to the best of my 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.

                                    SIGNATURE

            After reasonable inquiry and to the best of my knowledge and
belief, I hereby certify that the information set forth in this statement is
true, complete and correct.

October 4, 2011

                                              /s/ Thomas E. Claugus
                                              ----------------------------------
                                              Thomas E. Claugus, for himself
                                              and as President of GMT Capital
                                              Corp., for itself and as the
                                              general partner of (i) Bay
                                              Resource Partners, L.P. and (ii)
                                              Bay II Resource Partners, L.P.,
                                              and as the investment manager
                                              of (iii) Bay Resource Partners
                                              Offshore Master Fund, L.P. and
                                              (iv) certain other accounts.


                                  Page 10 of 10 Pages