UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 28, 2005 ASPEN INSURANCE HOLDINGS LIMITED (Exact name of registrant as specified in its charter) BERMUDA 001-31909 NOT APPLICABLE (State or other jurisdiction (Commission (I.R.S. Employer of incorporation) File Number) Identification No.) VICTORIA HALL 11 VICTORIA STREET HAMILTON HM 11 BERMUDA (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (441) 295-8201 NOT APPLICABLE (Former name or former address, if changed since last report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) [GRAPHIC OMITTED] SECTION 2 - FINANCIAL INFORMATION ITEM 2.02 RESULTS OF OPERATIONS AND FINANCIAL CONDITION On April 28, 2005, Aspen Insurance Holdings Limited issued a press release announcing results for the first quarter ended March 31, 2005, which has been attached as Exhibit 99.1. In addition, a copy of the Aspen Insurance Holdings Limited Earnings Release Supplement for the quarter ended March 31, 2005 is attached hereto as Exhibit 99.2. SECTION 7 - REGULATION FD ITEM 7.01 REGULATION FD DISCLOSURE On April 28, 2005, Aspen Insurance Holdings Limited issued a press release announcing results for the first quarter ended March 31, 2005, which has been attached as Exhibit 99.1. In addition, a copy of the Aspen Insurance Holdings Limited Earnings Release Supplement for the quarter ended March 31, 2005 is attached hereto as Exhibit 99.2. SECTION 9. FINANCIAL STATEMENTS AND EXHIBITS ITEM 9.01- FINANCIAL STATEMENTS AND EXHIBITS (c) The following exhibits are furnished under Items 7.01 and 2.02 as part of this report: 99.1 Press Release of the Registrant, dated April 28, 2005. 99.2 Earnings Release Supplement for the quarter ended March 31, 2005. The information furnished under Item 7.01 "Regulation FD Disclosure" and Item 2.02 "Results of Operations and Financial Condition" shall not be deemed "filed" for purpose of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ASPEN INSURANCE HOLDINGS LIMITED (Registrant) Dated: April 28, 2005 By: /s/ Julian Cusack ---------------------------- Name: Julian Cusack Title: Chief Financial Officer 3 INDEX TO EXHIBITS EXHIBIT NO. DESCRIPTION ----------- ------------------------------------------------------------------ 99.1 Press Release of the Registrant dated April 28, 2005 . 99.2 Earnings Release Supplement for the quarter ended March 31, 2005. 4