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
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

O Kane Christopher 		2. Issuer Name and Ticker or Trading Symbol

ASPEN INSURANCE HOLDINGS LTD [ AHL ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
CEO
(Last)          (First)          (Middle)

ASPEN INSURANCE HOLDINGS LIMITED, 141 FRONT STREET 		3. Date of Earliest Transaction (MM/DD/YYYY)

2/26/2013
(Street)

HAMILTON, D0 HM19
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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
Ordinary Shares   2/26/2013     A (1)    53592   A (1)   (2) 178482   D    
Ordinary Shares   2/27/2013     F    200   D $35.60   178282   D    
Ordinary Shares   2/27/2013     F    300   D $35.61   177982   D    
Ordinary Shares   2/27/2013     F    500   D $35.612   177482   D    
Ordinary Shares   2/27/2013     F    600   D $35.6167   176882   D    
Ordinary Shares   2/27/2013     F    300   D $35.62   176582   D    
Ordinary Shares   2/27/2013     F    300   D $35.63   176282   D    
Ordinary Shares   2/27/2013     F    1400   D $35.64   174882   D    
Ordinary Shares   2/27/2013     F    500   D $35.65   174382   D    
Ordinary Shares   2/27/2013     F    1700   D $35.66   172682   D    
Ordinary Shares   2/27/2013     F    500   D $35.67   172182   D    
Ordinary Shares   2/27/2013     F    600   D $35.68   171582   D    
Ordinary Shares   2/27/2013     F    200   D $35.685   171382   D    
Ordinary Shares   2/27/2013     F    1500   D $35.69   169882   D    
Ordinary Shares   2/27/2013     F    800   D $35.70   169082   D    
Ordinary Shares   2/27/2013     F    500   D $35.702   168582   D    
Ordinary Shares   2/27/2013     F    200   D $35.71   168382   D    
Ordinary Shares   2/27/2013     F    500   D $35.72   167882   D    
Ordinary Shares   2/27/2013     F    500   D $35.74   167382   D    
Ordinary Shares   2/27/2013     F    900   D $35.75   166482   D    
Ordinary Shares   2/27/2013     F    1599   D $35.76   164883   D    
Ordinary Shares   2/27/2013     F    810   D $35.77   164073   D    
Ordinary Shares   2/27/2013     F    400   D $35.7725   163673   D    
Ordinary Shares   2/27/2013     F    990   D $35.78   162683   D    
Ordinary Shares   2/27/2013     F    1300   D $35.79   161383   D    
Ordinary Shares   2/27/2013     F    2200   D $35.80   159183   D    

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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
2010 Performance Shares     (2) 2/26/2013     M   (3)       53592      (3)   (3) Ordinary Shares   53592     (2) 0   D    
2010 Performance Shares     (2) 2/26/2013     A      22928         (4)   (4) Ordinary Shares   22928     (2) 53592   D    
2011 Performance Shares     (2) 2/26/2013     A      27759         (5)   (5) Ordinary Shares   27759     (2) 27759   D    
2012 Performance Shares     (2) 2/26/2013     A      13596         (6)   (6) Ordinary Shares   13596     (2) 13596   D    

Explanation of Responses:
( 1)  Ordinary shares acquired upon mandatory conversion of Performance Shares in accordance with the performance conditions having been met.
( 2)  Each Performance Share represents the right to receive one share of the Issuer's Ordinary Shares
( 3)  Represents mandatory conversion into Issuer's Ordinary Shares of all 2010 Performance Shares eligible for vesting following the achievement of certain financial targets by the Issuer and filing of the annual report on Form 10-K for the year ended December 31, 2012.
( 4)  Represents 2010 Performance Shares eligible for vesting following the achievement of certain financial targets by the Issuer. One third of the 2010 Performance Share award is tested annually over a three-year period. All vested 2010 Performance Shares are issued following the filing of the annual report on Form 10-K for the year ended December 31, 2012.
( 5)  Represents 2011 Performance Shares eligible for vesting following the achievement of certain financial targets by the Issuer. One third of the 2011 Performance Share award is tested annually over a three-year period. All vested 2011 Performance Shares are issued following the filing of the annual report on Form 10-K for the year ended December 31, 2013.
( 6)  Represents 2012 Performance Shares eligible for vesting following the achievement of certain financial targets by the Issuer. One third of the 2012 Performance Share award is tested annually over a three-year period. All vested 2012 Performance Shares are issued following the filing of the annual report on Form 10-K for the year ended December 31, 2014.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
O Kane Christopher
ASPEN INSURANCE HOLDINGS LIMITED
141 FRONT STREET
HAMILTON, D0 HM19 		X
CEO

Signatures
/s/ Patricia Roufca as Attorney-in-fact for Christopher O'Kane 2/28/2013
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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