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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(Print or Type Responses)

1. Name and Address of Reporting Person * Kurtzman Kenneth A   2. Issuer Name and Ticker or Trading Symbol PLATINUM UNDERWRITERS HOLDINGS LTD [PTP] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP & CRO - PASI (Last) (First) (Middle) PLATINUM ADMINISTRATIVE SERVICES, INC., 2 STAMFORD PLAZA, SUITE 1504 3. Date of Earliest Transaction (Month/Day/Year) 02/23/2012 (Street) STAMFORD, CT 06901 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ 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 Shares 02/23/2012   M   2,552 A $ 0 62,228 D   Common Shares 02/23/2012   F   846 D $ 35.5 61,382 D   Common Shares 02/23/2012   A   2,117 (1) A $ 0 63,499 D   Common Shares 02/23/2012   F   702 D $ 35.5 62,797 D

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

Share units

(2)

02/23/2012

M

2,552

(3)

(3)

Common Shares (3)

2,552

$ 0

2,552

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Kurtzman Kenneth A PLATINUM ADMINISTRATIVE SERVICES, INC. 2 STAMFORD PLAZA, SUITE 1504 STAMFORD, CT 06901			EVP & CRO - PASI

Signatures

/s/ Christina M. Parker, Attorney-in-Fact		02/24/2012
**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)	These common shares represent the payment of an award granted on February 23, 2009 under the Amended and Restated Executive Incentive Plan of Platinum Underwriters Holdings, Ltd. (the "Company") for the 2009-2011 performance cycle.
(2)	1-for-1
(3)	These share units were awarded on February 23, 2009 under the Company's 2006 Share Incentive Plan (the "Plan"). On February 23, 2012, the third quarter of these share units vested and the Company issued to the reporting person one Common Share for each vested share unit, reduced by the number of Common Shares which are equal in Fair Market Value (as defined in the Plan) on such date to the reporting person's tax withholding obligation. The remaining quarter of the share units will vest on the fourth anniversary of the date of award and on that vesting date the Company will issue to the reporting person one Common Share for each vested share unit.

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