UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                  SCHEDULE 13G/A
                                 (Rule 13d-102)
                               (Amendment No. 1)
           INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO
            RULES 13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED
                            PURSUANT TO RULE 13d-2(b)





                             NEWSTAR FINANCIAL, INC.
--------------------------------------------------------------------------------
                                (Name of Issuer)


                          Common Stock, $0.01 par value
--------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    65251F105
--------------------------------------------------------------------------------
                                 (CUSIP Number)


                                December 31, 2008
--------------------------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)


Check the  appropriate box to designate the rule pursuant to which this Schedule
is filed:

     [X]    Rule 13d-1(b)
     [_]    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 ("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).




                                    1 of 10




-----------------------------                        ---------------------------
CUSIP No. 65251F105                  13G/A
-----------------------------                        ---------------------------

--------------------------------------------------------------------------------
     1     NAME OF REPORTING PERSONS
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

           Maverick Capital, Ltd. - 75-2482446
--------------------------------------------------------------------------------
     2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*    (a)  |_|
                                                                (b)  |_|
--------------------------------------------------------------------------------
     3     SEC USE ONLY

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

           Texas
--------------------------------------------------------------------------------
                |   5   |  SOLE VOTING POWER
                |       |  2,735,052
 NUMBER OF      ----------------------------------------------------------------
   SHARES       |   6   |  SHARED VOTING POWER
BENEFICIALLY    |       |  0
  OWNED BY      ----------------------------------------------------------------
    EACH        |   7   |  SOLE DISPOSITIVE POWER
 REPORTING      |       |  2,735,052
PERSON WITH     ----------------------------------------------------------------
                |   8   |  SHARED DISPOSITIVE POWER
                |       |  0
--------------------------------------------------------------------------------
     9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           2,735,052
--------------------------------------------------------------------------------
    10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
           CERTAIN SHARES*
                                                                        |_|
--------------------------------------------------------------------------------
    11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

           5.6%
--------------------------------------------------------------------------------
    12     TYPE OF REPORTING PERSON*

           IA
--------------------------------------------------------------------------------

         *SEE INSTRUCTIONS BEFORE FILLING OUT


                                    2 of 10



-----------------------------                        ---------------------------
CUSIP No. 65251F105                  13G/A
-----------------------------                        ---------------------------

--------------------------------------------------------------------------------
     1     NAME OF REPORTING PERSONS
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

           Maverick Capital Management, LLC - 75-2686461
--------------------------------------------------------------------------------
     2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*    (a)  |_|
                                                                (b)  |_|
--------------------------------------------------------------------------------
     3     SEC USE ONLY

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

           Texas
--------------------------------------------------------------------------------
                |   5   |  SOLE VOTING POWER
                |       |  2,735,052
 NUMBER OF      ----------------------------------------------------------------
   SHARES       |   6   |  SHARED VOTING POWER
BENEFICIALLY    |       |  0
  OWNED BY      ----------------------------------------------------------------
    EACH        |   7   |  SOLE DISPOSITIVE POWER
 REPORTING      |       |  2,735,052
PERSON WITH     ----------------------------------------------------------------
                |   8   |  SHARED DISPOSITIVE POWER
                |       |  0
--------------------------------------------------------------------------------
     9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           2,735,052
--------------------------------------------------------------------------------
    10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
           CERTAIN SHARES*
                                                                        |_|
--------------------------------------------------------------------------------
    11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

           5.6%
--------------------------------------------------------------------------------
    12     TYPE OF REPORTING PERSON*

           HC
--------------------------------------------------------------------------------

         *SEE INSTRUCTIONS BEFORE FILLING OUT


                                    3 of 10



-----------------------------                        ---------------------------
CUSIP No. 65251F105                  13G/A
-----------------------------                        ---------------------------

--------------------------------------------------------------------------------
     1     NAME OF REPORTING PERSONS
           I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

           Lee S. Ainslie III
--------------------------------------------------------------------------------
     2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*    (a)  |_|
                                                                (b)  |_|
--------------------------------------------------------------------------------
     3     SEC USE ONLY

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

           United States
--------------------------------------------------------------------------------
                |   5   |  SOLE VOTING POWER
                |       |  2,735,052
 NUMBER OF      ----------------------------------------------------------------
   SHARES       |   6   |  SHARED VOTING POWER
BENEFICIALLY    |       |  0
  OWNED BY      ----------------------------------------------------------------
    EACH        |   7   |  SOLE DISPOSITIVE POWER
 REPORTING      |       |  2,735,052
PERSON WITH     ----------------------------------------------------------------
                |   8   |  SHARED DISPOSITIVE POWER
                |       |  0
--------------------------------------------------------------------------------
     9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           2,735,052
--------------------------------------------------------------------------------
    10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
           CERTAIN SHARES*
                                                                        |_|
--------------------------------------------------------------------------------
    11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

           5.6%
--------------------------------------------------------------------------------
    12     TYPE OF REPORTING PERSON*

           HC
--------------------------------------------------------------------------------

         *SEE INSTRUCTIONS BEFORE FILLING OUT


                                    4 of 10



Item 1(a)   Name of Issuer.

            NewStar Financial, Inc.

Item 1(b)   Address of Issuer's Principal Executive Offices.

            500 Boylston Street
            Suite 1600
            Boston, Massachusetts  02116

Item 2(a)   Name of Person Filing.

            This Schedule 13G (the "Schedule 13G") is being filed on behalf of
            each of the following persons (each, a "Reporting Person"):

            (i)    Maverick Capital, Ltd.;
            (ii)   Maverick Capital Management, LLC; and
            (iii)  Lee S. Ainslie III ("Mr. Ainslie").

            The Schedule 13G relates to Shares (as defined herein) held for the
            accounts of Maverick Capital, Ltd.'s clients.


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

            The address of the principal business office of (i) Maverick
            Capital, Ltd. and Maverick Capital Management, LLC is 300 Crescent
            Court, 18th Floor, Dallas, Texas 75201, and (ii) Mr. Ainslie is 767
            Fifth Avenue, 11th Floor, New York, New York 10153.


Item 2(c)   Citizenship or Place of Organization.

            (i)    Maverick Capital, Ltd. is a Texas limited partnership;
            (ii)   Maverick Capital Management, LLC is a Texas limited liability
                   company; and
            (iii)  Mr. Ainslie is a citizen of the United States.

Item 2(d)   Title of Class of Securities.

            Common Stock, $0.01 par value (the "Shares").

Item 2(e)   CUSIP Number.

            65251F105



                                    5 of 10


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) [X]  An investment advisor 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) [X]  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 ss.240.13d-1(b)(1)(ii)(J).

Item 4      Ownership.

            Ownership as of December 31, 2008 is incorporated by reference to
            items (5) - (9) and (11) of the cover page of the Reporting Person.

            Maverick Capital, Ltd. is an investment adviser registered under
            Section 203 of the Investment Advisers Act of 1940 and, as such, may
            be deemed to have beneficial ownership of the Shares which are the
            subject of this filing through the investment discretion it
            exercises over its clients' accounts. Maverick Capital Management,
            LLC is the General Partner of Maverick Capital, Ltd. Mr. Ainslie is
            the manager of Maverick Capital Management, LLC and is granted sole
            investment discretion pursuant to Maverick Capital Management, LLC's
            Regulations.

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

            Not applicable.

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

            Not applicable.



                                    6 of 10


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 each of the Reporting Persons certifies that, to
            the best of such person's knowledge and belief, the securities
            referred to above were acquired and are held in the ordinary course
            of business and 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
certify that the information set forth in this statement is true, complete and
correct.

Date:  February 17, 2009             MAVERICK CAPITAL, LTD.

                                     By:   Maverick Capital Management, LLC,
                                           Its General Partner

                                           By: Lee S. Ainslie III, Manager

                                               By: /s/ John T. McCafferty
                                                   -----------------------------
                                                   John T. McCafferty
                                                   Under Power of Attorney dated
                                                   February 13, 2003




                                    7 of 10


Date:  February 17, 2009             MAVERICK CAPITAL MANAGEMENT, LLC

                                     By:   Lee S. Ainslie III, Manager

                                           By:  /s/ John T. McCafferty
                                                --------------------------------
                                                John T. McCafferty
                                                Under Power of Attorney dated
                                                February 13, 2003



Date:  February 17, 2009             LEE S. AINSLIE III


                                     By:  /s/ John T. McCafferty
                                          --------------------------------------
                                          John T. McCafferty
                                          Under Power of Attorney dated
                                          February 13, 2003




                                    8 of 10


                                  EXHIBIT INDEX

A.   Joint Filing Agreement, dated February 14, 2008, by and among Maverick
     Capital, Ltd., Maverick Capital Management, LLC, and Lee S. Ainslie III.



                                    9 of 10


                                                                       Exhibit A

                             Joint Filing Agreement

     The undersigned hereby agree that the statement on Schedule 13G with
respect to the Common Stock, $0.01 par value of NewStar Financial, Inc., dated
as of February 14, 2008, is, and any amendments thereto (including amendments on
Schedule 13D) signed by each of the undersigned shall be, filed on behalf of
each of us pursuant to and in accordance with the provisions of Rule 13d-1(k)
under the Securities Exchange Act of 1934.

Date: February 14, 2008


                              MAVERICK CAPITAL, LTD.

                              By: Maverick Capital Management, LLC
                                  Its General Partner

                                  By: Lee S. Ainslie III, Manager



                                      By: /s/John T. McCafferty
                                          --------------------------------------
                                          John T. McCafferty
                                          Under Power of Attorney dated
                                          February 13, 2003


                              MAVERICK CAPITAL MANAGEMENT, LLC

                              By: Lee S. Ainslie III, Manager



                                  By: /s/John T. McCafferty
                                      ------------------------------------------
                                      John T. McCafferty
                                      Under Power of Attorney dated
                                      February 13, 2003


                              LEE S. AINSLIE III



                              By: /s/John T. McCafferty
                                  ----------------------------------------------
                                  John T. McCafferty
                                  Under Power of Attorney dated
                                  February 13, 2003