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


                                  SCHEDULE 13G

                   UNDER THE SECURITIES EXCHANGE ACT OF 1934
                               (AMENDMENT NO. 1)*

                             Rush Enterprises, Inc.
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                 Class A Common Stock, $.01 Par Value Per Share
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   781846209
                                 --------------
                                 (CUSIP Number)

                               December 31, 2004
                      ------------------------------------
                      (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 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 ("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 14


- -------------------------                                -----------------------
   CUSIP No. 781846209                13G                  Page  2 of 14 Pages
- -------------------------                                -----------------------

- ---------- ---------------------------------------------------------------------
        1  NAME OF REPORTING PERSON
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

           S.A.C. Capital Advisors, LLC
- ---------- ---------------------------------------------------------------------
        2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
- ---------- ---------------------------------------------------------------------
        3  SEC USE ONLY


- ---------- ---------------------------------------------------------------------
        4  CITIZENSHIP OR PLACE OF ORGANIZATION

           Delaware
- --------------------- ----- ----------------------------------------------------
      NUMBER OF          5  SOLE VOTING POWER
        SHARES
     BENEFICIALLY           0
        OWNED         ----- ----------------------------------------------------
          BY             6  SHARED VOTING POWER
         EACH
      REPORTING             707,400 (see Item 4)
        PERSON        ----- ----------------------------------------------------
         WITH            7  SOLE DISPOSITIVE POWER

                            0
                      ----- ----------------------------------------------------
                         8  SHARED DISPOSITIVE POWER

                            707,400 (see Item 4)
- ---------- ---------------------------------------------------------------------
        9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           707,400 (see Item 4)
- ---------- ---------------------------------------------------------------------
       10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

           |_|
- ---------- ---------------------------------------------------------------------
       11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

           4.2% (see Item 4)
- ---------- ---------------------------------------------------------------------
       12  TYPE OF REPORTING PERSON*

           00
- ---------- ---------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT

                                  Page 2 of 14


- -------------------------                                -----------------------
   CUSIP No. 781846209                13G                  Page  3 of 14 Pages
- -------------------------                                -----------------------

- ---------- ---------------------------------------------------------------------
        1  NAME OF REPORTING PERSON
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

           S.A.C. Capital Management, LLC
- ---------- ---------------------------------------------------------------------
        2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
- ---------- ---------------------------------------------------------------------
        3  SEC USE ONLY


- ---------- ---------------------------------------------------------------------
        4  CITIZENSHIP OR PLACE OF ORGANIZATION

           Delaware
- -------------------- ------ ----------------------------------------------------
      NUMBER OF          5  SOLE VOTING POWER
       SHARES
    BENEFICIALLY            0
        OWNED        ------ ----------------------------------------------------
         BY              6  SHARED VOTING POWER
        EACH
      REPORTING             707,400 (see Item 4)
       PERSON        ------ ----------------------------------------------------
        WITH             7  SOLE DISPOSITIVE POWER

                            0
                     ------ ----------------------------------------------------
                         8  SHARED DISPOSITIVE POWER

                            707,400 (see Item 4)
- ---------- ---------------------------------------------------------------------
        9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           707,400 (see Item 4)
- ---------- ---------------------------------------------------------------------
       10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

           |_|
- ---------- ---------------------------------------------------------------------
       11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

           4.2% (see Item 4)
- ---------- ---------------------------------------------------------------------
       12  TYPE OF REPORTING PERSON*

           00
- ---------- ---------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT

                                  Page 3 of 14


- -------------------------                                -----------------------
   CUSIP No. 781846209                13G                  Page  4 of 14 Pages
- -------------------------                                -----------------------

- ---------- ---------------------------------------------------------------------
        1  NAME OF REPORTING PERSON
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

           S.A.C. Capital Associates, LLC
- ---------- ---------------------------------------------------------------------
        2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
- ---------- ---------------------------------------------------------------------
        3  SEC USE ONLY


- ---------- ---------------------------------------------------------------------
        4  CITIZENSHIP OR PLACE OF ORGANIZATION

           Anguilla, British West Indies
- -------------------- ------ ----------------------------------------------------
      NUMBER OF          5  SOLE VOTING POWER
       SHARES
    BENEFICIALLY            0
        OWNED        ------ ----------------------------------------------------
         BY              6  SHARED VOTING POWER
        EACH
      REPORTING             700,000 (see Item 4)
       PERSON        ------ ----------------------------------------------------
        WITH             7  SOLE DISPOSITIVE POWER

                            0
                     ------ ----------------------------------------------------
                         8  SHARED DISPOSITIVE POWER

                            700,000 (see Item 4)
- ---------- ---------------------------------------------------------------------
        9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           700,000 (see Item 4)
- ---------- ---------------------------------------------------------------------
       10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

           |_|
- ---------- ---------------------------------------------------------------------
       11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

           4.2% (see Item 4)
- ---------- ---------------------------------------------------------------------
       12  TYPE OF REPORTING PERSON*

           00
- ---------- ---------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT

                                  Page 4 of 14


- -------------------------                                -----------------------
   CUSIP No. 781846209                13G                  Page  5 of 14 Pages
- -------------------------                                -----------------------

- ---------- ---------------------------------------------------------------------
        1  NAME OF REPORTING PERSON
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

           S.A.C. MultiQuant Fund, LLC
- ---------- ---------------------------------------------------------------------
        2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
- ---------- ---------------------------------------------------------------------
        3  SEC USE ONLY


- ---------- ---------------------------------------------------------------------
        4  CITIZENSHIP OR PLACE OF ORGANIZATION

           Anguilla, British West Indies
- -------------------- ------ ----------------------------------------------------
      NUMBER OF          5  SOLE VOTING POWER
       SHARES
    BENEFICIALLY            0
        OWNED        ------ ----------------------------------------------------
         BY              6  SHARED VOTING POWER
        EACH
      REPORTING             7,400 (see Item 4)
       PERSON        ------ ----------------------------------------------------
        WITH             7  SOLE DISPOSITIVE POWER

                            0
                     ------ ----------------------------------------------------
                         8  SHARED DISPOSITIVE POWER

                            7,400 (see Item 4)
- ---------- ---------------------------------------------------------------------
        9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           7,400 (see Item 4)
- ---------- ---------------------------------------------------------------------
       10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

           |_|
- ---------- ---------------------------------------------------------------------
       11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

           Less than 1% (see Item 4)
- ---------- ---------------------------------------------------------------------
       12  TYPE OF REPORTING PERSON*

           00
- ---------- ---------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT

                                  Page 5 of 14


- -------------------------                                -----------------------
   CUSIP No. 781846209                13G                  Page  6 of 14 Pages
- -------------------------                                -----------------------

- ---------- ---------------------------------------------------------------------
        1  NAME OF REPORTING PERSON
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

           Sigma Capital Management, LLC
- ---------- ---------------------------------------------------------------------
        2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
- ---------- ---------------------------------------------------------------------
        3  SEC USE ONLY


- ---------- ---------------------------------------------------------------------
        4  CITIZENSHIP OR PLACE OF ORGANIZATION

           Delaware
- -------------------- ------ ----------------------------------------------------
      NUMBER OF          5  SOLE VOTING POWER
       SHARES
    BENEFICIALLY            0
        OWNED        ------ ----------------------------------------------------
         BY              6  SHARED VOTING POWER
        EACH
      REPORTING             147,500 (see Item 4)
       PERSON        ------ ----------------------------------------------------
        WITH             7  SOLE DISPOSITIVE POWER

                            0
                     ------ ----------------------------------------------------
                         8  SHARED DISPOSITIVE POWER

                            147,500 (see Item 4)
- ---------- ---------------------------------------------------------------------
        9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           147,500 (see Item 4)
- ---------- ---------------------------------------------------------------------
       10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

           |_|
- ---------- ---------------------------------------------------------------------
       11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

           1.0% (see Item 4)
- ---------- ---------------------------------------------------------------------
       12  TYPE OF REPORTING PERSON*

           00
- ---------- ---------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT

                                  Page 6 of 14


- -------------------------                                -----------------------
   CUSIP No. 781846209                13G                  Page  7 of 14 Pages
- -------------------------                                -----------------------

- ---------- ---------------------------------------------------------------------
        1  NAME OF REPORTING PERSON
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

           Sigma Capital Associates, LLC
- ---------- ---------------------------------------------------------------------
        2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
- ---------- ---------------------------------------------------------------------
        3  SEC USE ONLY


- ---------- ---------------------------------------------------------------------
        4  CITIZENSHIP OR PLACE OF ORGANIZATION

           Anguilla, British West Indies
- -------------------- ------ ----------------------------------------------------
      NUMBER OF          5  SOLE VOTING POWER
       SHARES
    BENEFICIALLY            0
        OWNED        ------ ----------------------------------------------------
         BY              6  SHARED VOTING POWER
        EACH
      REPORTING             147,500 (see Item 4)
       PERSON        ------ ----------------------------------------------------
        WITH             7  SOLE DISPOSITIVE POWER

                            0
                     ------ ----------------------------------------------------
                         8  SHARED DISPOSITIVE POWER

                            147,500 (see Item 4)
- ---------- ---------------------------------------------------------------------
        9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           147,500 (see Item 4)
- ---------- ---------------------------------------------------------------------
       10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

           |_|
- ---------- ---------------------------------------------------------------------
       11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

           1.0% (see Item 4)
- ---------- ---------------------------------------------------------------------
       12  TYPE OF REPORTING PERSON*

           00
- ---------- ---------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT

                                  Page 7 of 14


- -------------------------                                -----------------------
   CUSIP No. 781846209                13G                  Page  8 of 14 Pages
- -------------------------                                -----------------------

- ---------- ---------------------------------------------------------------------
        1  NAME OF REPORTING PERSON
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

           Steven A. Cohen
- ---------- ---------------------------------------------------------------------
        2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) |_|
                                                                         (b) |X|
- ---------- ---------------------------------------------------------------------
        3  SEC USE ONLY


- ---------- ---------------------------------------------------------------------
        4  CITIZENSHIP OR PLACE OF ORGANIZATION

           United States
- -------------------- ------ ----------------------------------------------------
      NUMBER OF          5  SOLE VOTING POWER
       SHARES
    BENEFICIALLY            0
        OWNED        ------ ----------------------------------------------------
         BY              6  SHARED VOTING POWER
        EACH
      REPORTING             854,900 (see Item 4)
       PERSON        ------ ----------------------------------------------------
        WITH             7  SOLE DISPOSITIVE POWER

                            0
                     ------ ----------------------------------------------------
                         8  SHARED DISPOSITIVE POWER

                            854,900 (see Item 4)
- ---------- ---------------------------------------------------------------------
        9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           854,900 (see Item 4)
- ---------- ---------------------------------------------------------------------
       10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

           |_|
- ---------- ---------------------------------------------------------------------
       11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

           5.2% (see Item 4)
- ---------- ---------------------------------------------------------------------
       12  TYPE OF REPORTING PERSON*

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

                      *SEE INSTRUCTION BEFORE FILLING OUT

                                  Page 8 of 14


ITEM 1(A)         NAME OF ISSUER:

                  Rush Enterprises, Inc.

ITEM 1(B)         ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

                  555 I.H. 35 South, Suite 500
                  New Braunfels, Texas 78130

ITEMS 2(A)        NAME OF PERSON FILING:

                  This statement is filed by: (i) S.A.C. Capital Advisors, LLC,
                  ("SAC Capital Advisors") with respect to shares of Class A
                  common stock, $.01 par value per share ("Shares") of the
                  Issuer beneficially owned by S.A.C. Capital Associates, LLC
                  ("SAC Capital Associates") and S.A.C. MultiQuant Fund, LLC
                  ("SAC MultiQuant"); (ii) S.A.C. Capital Management, LLC, ("SAC
                  Capital Management") with respect to Shares beneficially owned
                  by SAC Capital Associates; (iii) SAC Capital Associates with
                  respect to Shares beneficially owned by it; (iv) SAC
                  MultiQuant with respect to Shares beneficially owned by it;
                  (v) Sigma Capital Management, LLC ("Sigma Capital Management")
                  with respect to Shares beneficially owned by Sigma Capital
                  Associates, LLC ("Sigma Capital Associates"); (vi) Sigma
                  Capital Associates with respect to Shares beneficially owned
                  by it; and (vii) Steven A. Cohen with respect to Shares
                  beneficially owned by SAC Capital Advisors, SAC Capital
                  Management, SAC Capital Associates, SAC MultiQuant, Sigma
                  Capital Management and Sigma Capital Associates.

ITEM 2(B)         ADDRESS OF PRINCIPAL BUSINESS OFFICE:

                  The address of the principal business office of (i) SAC
                  Capital Advisors and Mr. Cohen is 72 Cummings Point Road,
                  Stamford, Connecticut 06902, (ii) SAC Capital Management and
                  Sigma Capital Management is 540 Madison Avenue, New York, New
                  York 10022, and (iii) SAC Capital Associates, SAC MultiQuant
                  and Sigma Capital Associates is P.O. Box 58, Victoria House,
                  The Valley, Anguilla, British West Indies.

ITEM 2(C)         CITIZENSHIP:

                  SAC Capital Advisors, SAC Capital Management and Sigma Capital
                  Management are Delaware limited liability companies. SAC
                  Capital Associates, SAC MultiQuant and Sigma Capital
                  Associates are Anguillan limited liability companies. Mr.
                  Cohen is a United States citizen.

                                  Page 9 of 14



ITEM 2(D)         TITLE OF CLASS OF SECURITIES:

                  Class A Common Stock, par value $.01 per share

ITEM 2(E)         CUSIP NUMBER:

                  781846209

ITEM 3            Not Applicable

ITEM 4            OWNERSHIP:

                  As of the close of business on December 31, 2004:
                  1. S.A.C. Capital Advisors, LLC
                  (a) Amount beneficially owned: 707,400
                  (b) Percent of class: 4.2%
                  (c)(i) Sole power to vote or direct the vote: -0-
                  (ii) Shared power to vote or direct the vote: 707,400
                  (iii) Sole power to dispose or direct the disposition: -0-
                  (iv) Shared power to dispose or direct the disposition:
                  707,400

                  2. S.A.C. Capital Management, LLC
                  (a) Amount beneficially owned: 707,400
                  (b) Percent of class: 4.2%
                  (c)(i) Sole power to vote or direct the vote: -0-
                  (ii) Shared power to vote or direct the vote: 707,400
                  (iii) Sole power to dispose or direct the disposition: -0-
                  (iv) Shared power to dispose or direct the disposition:
                  707,400

                  3. S.A.C. Capital Associates, LLC
                  (a) Amount beneficially owned: 700,000
                  (b) Percent of class: 4.2%
                  (c)(i) Sole power to vote or direct the vote: -0-
                  (ii) Shared power to vote or direct the vote: 700,000
                  (iii) Sole power to dispose or direct the disposition: -0-
                  (iv) Shared power to dispose or direct the disposition:
                  700,000


                                 Page 10 of 14


                  4. S.A.C. MultiQuant Fund, LLC
                  (a) Amount beneficially owned: 7,400
                  (b) Percent of class: Less than 1%
                  (c)(i) Sole power to vote or direct the vote: -0-
                  (ii) Shared power to vote or direct the vote: 7,400
                  (iii) Sole power to dispose or direct the disposition: -0-
                  (iv) Shared power to dispose or direct the disposition: 7,400

                  5. Sigma Capital Management, LLC
                  (a) Amount beneficially owned: 147,500
                  (b) Percent of class: 1.0%
                  (c)(i) Sole power to vote or direct the vote: -0-
                  (ii) Shared power to vote or direct the vote: 147,500
                  (iii) Sole power to dispose or direct the disposition: -0-
                  (iv) Shared power to dispose or direct the disposition:
                  147,500

                  6. Sigma Capital Associates, LLC
                  (a) Amount beneficially owned: 147,500
                  (b) Percent of class: 1.0%
                  (c)(i) Sole power to vote or direct the vote: -0-
                  (ii) Shared power to vote or direct the vote: 147,500
                  (iii) Sole power to dispose or direct the disposition: -0-
                  (iv) Shared power to dispose or direct the disposition:
                  147,500

                  7. Steven A. Cohen
                  (a) Amount beneficially owned: 854,900
                  (b) Percent of class: 5.2%
                  (c)(i) Sole power to vote or direct the vote: -0-
                  (ii) Shared power to vote or direct the vote: 854,900
                  (iii) Sole power to dispose or direct the disposition: -0-
                  (iv) Shared power to dispose or direct the disposition:
                  854,900

                  SAC Capital Advisors, SAC Capital Management, Sigma Capital
                  Management, and Mr. Cohen own directly no Shares. Pursuant to
                  investment agreements, each of SAC Capital Advisors and SAC
                  Capital Management share all investment and voting power with
                  respect to the securities held by SAC Capital Associates and
                  SAC MultiQuant. Pursuant to an investment management
                  agreement, Sigma Capital Management maintains investment and
                  voting power with respect to the securities held by Sigma
                  Capital Associates. Mr. Cohen controls each of SAC Capital
                  Advisors, SAC Capital Management and Sigma Capital Management.
                  By reason of the provisions of Rule 13d-3 of the Securities
                  Exchange Act of 1934, as amended, each of (i) SAC Capital
                  Advisors, SAC Capital Management and Mr. Cohen may be deemed
                  to own beneficially 707,400 Shares (constituting approximately
                  4.2% of the Shares outstanding) and (ii) Sigma Capital
                  Management and Mr. Cohen may be deemed to own beneficially
                  147,500 Shares (constituting approximately 1.0% of the Shares
                  outstanding). Each of SAC Capital Advisors, SAC Capital
                  Management, Sigma Capital Management and Mr. Cohen disclaim
                  beneficial ownership of any of the securities covered by this
                  statement.


                                 Page 11 of 14


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:

                  Not Applicable

ITEM 9            NOTICE OF DISSOLUTION OF GROUP:

                  Not Applicable

ITEM 10           CERTIFICATION:

         By signing below the signatory certifies that, to the best of his
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.


                                 Page 12 of 14


                                   SIGNATURE

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

Dated:  February 14, 2005


S.A.C. CAPITAL ADVISORS, LLC


By: /s/ Peter Nussbaum
   -----------------------------------------
Name:  Peter Nussbaum
Title:  Authorized Person


S.A.C. CAPITAL MANAGEMENT, LLC


By: /s/ Peter Nussbaum
   -----------------------------------------
Name:  Peter Nussbaum
Title:  Authorized Person


S.A.C. CAPITAL ASSOCIATES, LLC


By: /s/ Peter Nussbaum
   -----------------------------------------
Name:  Peter Nussbaum
Title:  Authorized Person


S.A.C. MULTIQUANT FUND, LLC


By: /s/ Peter Nussbaum
   -----------------------------------------
Name:  Peter Nussbaum
Title:  Authorized Person


SIGMA CAPITAL MANAGEMENT, LLC


By: /s/ Peter Nussbaum
   -----------------------------------------
Name:  Peter Nussbaum
Title:  Authorized Person


                                 Page 13 of 14


SIGMA CAPITAL ASSOCIATES, LLC


By: /s/ Peter Nussbaum
   -----------------------------------------
Name:  Peter Nussbaum
Title:  Authorized Person


STEVEN A. COHEN


By: /s/ Peter Nussbaum
   -----------------------------------------
Name:  Peter Nussbaum
Title:  Authorized Person


                              Page 14 of 14 Pages