FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Capital Z Partners III GP, Ltd.   2. Issuer Name and Ticker or Trading Symbol NewStar Financial, Inc. [NEWS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) __X__ Other (specify below) See Remarks Section (Last) (First) (Middle) 142 WEST 57TH STREET,  3. Date of Earliest Transaction (Month/Day/Year) 09/19/2012 (Street) NEW YORK, NY 10019 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, $0.01 par value               4,000,000 I (1) See Footnote (1) Common Stock, $0.01 par value 09/19/2012   J(3)   6,643 A $ 0 5,536,386 I (2) (3) See Footnotes (2) (3)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Capital Z Partners III GP, Ltd. 142 WEST 57TH STREET NEW YORK, NY 10019				See Remarks Section
Capital Z Partners III, L.P. 230 PARK AVENUE SOUTH 11TH FLOOR NEW YORK, NY 10003				See Remarks Section
Capital Z Partners III GP, L.P. 230 PARK AVENUE SOUTH 11TH FLOOR NEW YORK, NY 10003				See Remarks Section
CAPITAL Z FINANCIAL SERVICES FUND II LP 230 PARK AVENUE SOUTH, 11TH FLOOR NEW YORK, NY 10003		X
CAPITAL Z FINANCIAL SERVICES PRIVATE FUND II, L.P. 230 PARK AVENUE SOUTH, 11TH FLOOR NEW YORK, NY 10003		X
CAPITAL Z PARTNERS LP 230 PARK AVENUE SOUTH, 11TH FLOOR NEW YORK, NY 10003		X
CAPITAL Z PARTNERS LTD 230 PARK AVENUE SOUTH, 11TH FLOOR NEW YORK, NY 10003		X
Capital Z Partners Management, LLC 230 PARK AVENUE 11TH FLOOR NEW YORK, NY 10003		X
Capital Z Management, LLC 230 PARK AVENUE SOUTH, 11TH FLOOR NEW YORK, NY 10003				See Footnote (1)

Signatures

/s/ Craig Fisher, Authorized Signatory for Capital Z Partners III GP, Ltd.		09/21/2012
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Due to the limitation on the amount of characters used, please see Item 1 of Exhibit 99.2 Explanation of Response.
(2)	Due to the limitation on the amount of characters used, please see Item 2 of Exhibit 99.2 Explanation of Response.
(3)	Due to the limitation on the amount of characters used, please see Item 3 of Exhibit 99.2 Explanation of Response.
Remarks: See Exhibit 99.1 Joint Filer Information and 99.2 Explanation of Response

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