SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Brown Heather (Last) (First) (Middle) 141 FRONT STREET (Street) HAMILTON D0 HM19 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol ASPEN INSURANCE HOLDINGS LTD [ AHL ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Group HR Director
	3. Date of Earliest Transaction (Month/Day/Year) 02/08/2019
	4. If Amendment, Date of 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

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
Ordinary Shares	02/08/2019		A		237	A	(1)	692	D
Ordinary Shares	02/08/2019		F(2)		112	D	$42.56	580	D
Ordinary Shares	02/09/2019		A		1,167	A	(1)	1,747	D
Ordinary Shares	02/09/2019		F(3)		549	D	$42.56	1,198	D
Ordinary Shares	02/10/2019		A		385	A	(1)	1,583	D
Ordinary Shares	02/10/2019		F(4)		181	D	$42.56	1,402	D

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 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: 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
Restricted Share Units (2016 Grant)	(5)	02/08/2019		M			237	(6)	(6)	Ordinary Shares	237	(5)	0	D
Restricted Share Units (2018 Grant)	(5)	02/09/2019		M			1,167	(7)	(7)	Ordinary Shares	1,167	(5)	2,333	D
Restricted Share Units (2017 Grant)	(5)	02/10/2019		M			385	(8)	(8)	Ordinary Shares	385	(5)	385	D

Explanation of Responses:

1. Ordinary shares acquired upon mandatory conversion of previously granted Restricted Share Units.

2. Ordinary shares withheld in order to satisfy tax liability in connection with previously granted 2016 Restricted Share Units.

3. Ordinary shares withheld in order to satisfy tax liability in connection with previously granted 2018 Restricted Share Units.

4. Ordinary shares withheld in order to satisfy tax liability in connection with previously granted 2017 Restricted Share Units.

5. Each Restricted Share Unit represents the right to receive one share of the Issuer's Ordinary Shares.

6. Represents 2016 Restricted Share Units granted on February 8, 2016 under our 2013 Share Incentive Plan, as amended. One-third of the 2016 Restricted Share Units vested annually on the anniversary of the grant date over a three-year period, in each case subject to the Reporting Person's continued service. Upon vesting of the 2016 Restricted Share Units, the Reporting Person shall be entitled to receive a number of Ordinary Shares equal to the number of Restricted Share Units then vesting.

7. Represents 2018 Restricted Share Units granted on February 9, 2018 under our 2013 Share Incentive Plan, as amended. One-third of the 2018 Restricted Share Units vests annually on the anniversary of the grant date over a three-year period, in each case subject to the Reporting Person's continued service. Upon vesting of the 2018 Restricted Share Units, the Reporting Person shall be entitled to receive a number of Ordinary Shares equal to the number of Restricted Share Units then vesting.

8. Represents 2017 Restricted Share Units granted on February 10, 2017 under our 2013 Share Incentive Plan, as amended. One-third of the 2017 Restricted Share Units vests annually on the anniversary of the grant date over a three-year period, in each case subject to the Reporting Person's continued service. Upon vesting of the 2017 Restricted Share Units, the Reporting Person shall be entitled to receive a number of Ordinary Shares equal to the number of Restricted Share Units then vesting.

Remarks:

	/s/Silvia Martinez as Attorney-in-fact for Heather Brown	02/12/2019
	** 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.
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