Ownership Submission
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 *
PRESTIA GARY
   2. Issuer Name and Ticker or Trading Symbol
Flagstone Reinsurance Holdings, S.A. [FSR] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
CEO - Flagstone Reps (US) Inc.
(Last)
(First)
(Middle)
FLAGSTONE REINSURANCE HOLDINGS, S.A., 65 AVENUE DE LA GARE		 3. Date of Earliest Transaction (Month/Day/Year)
11/30/2012
(Street)

LUXEMBOURG, N4 L-1611		 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 11/30/2012   D   87,253 D (1) 0 D  
Common Shares 11/30/2012   D   500 D (1) 0 I By wife (2)

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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
Performance Share Units $ 0 (3) 11/30/2012   D     290,250   (4)   (5) Common Shares 290,250 $ 0 (3) 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
PRESTIA GARY
FLAGSTONE REINSURANCE HOLDINGS, S.A.
65 AVENUE DE LA GARE
LUXEMBOURG, N4 L-1611		       CEO - Flagstone Reps (US) Inc.  

Signatures

 /s/ William F. Fawcett, by power of attorney   11/30/2012
**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) Disposed of pursuant to the Agreement and Plan of Merger, dated as of August 30, 2012, by and among the Company, Flagstone Reinsurance Holdings (Bermuda) Limited, Validus Holdings, Ltd. ("Validus") and Validus UPS, Ltd. (the "Merger Agreement"), pursuant to which each common share was converted into the right to receive a cash payment of $2.00 and 0.1935 common shares of Validus (as of November 29, 2012, the closing price of common shares of Validus was $34.87 per share).
(2) The Reporting Person disclaims beneficial ownership of the common shares held by his wife.
(3) Each Performance Share Unit ("PSU") represents the right to receive, without payment to the Company, a number of common shares of the Company (or the cash equivalent, at the election of the Company) equal to the product of the number of PSUs granted multiplied by a factor based on the Company's fully-diluted return on equity during the vesting period, subject to the terms and conditions of the PSU Plan and grant certificate evidencing each grant.
(4) Pursuant to the Merger Agreement, the PSUs were converted into the right to receive, for each PSU (based on attainment of all applicable performance goals at the maximum level for payout), (A) a cash payment of $2.00 plus the amount of cumulative dividends declared by the Company with respect to the common shares underlying such PSUs through the date on which the mergers contemplated by the Merger Agreement were consummated and (B) 0.1935 common shares of Validus (as of November 29, 2012, the closing price of common shares of Validus was $34.87 per share).
(5) The PSUs had no expiry date.

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