Company: AHL
Filing Date: 2025-04-29
Form Type: 6-K
Source: 0001628280-25-020465
Chunk: 1

Company: ASPEN INSURANCE HOLDINGS LTD
Filing Date: 2025-04-29
Form: 6-K
Chunk 1
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 way, other than to reflect the Exchange.

The following items within the consolidated financial statements and accompanying notes and schedules contained within Part III, Item 18, “Financial Statements” of the 2024 Form 20-F give retroactive effect to the Exchange as reflected in Exhibit 99.1 to this Form 6-K:

• Consolidated Balance Sheets as at December 31, 2024 and December 31, 2023;

• Consolidated Statements of Operations and Other Comprehensive Income (Loss) for the twelve months ended December 31, 2024, 2023 and 2022;

• Consolidated Statements of Changes in Shareholders’ Equity for the twelve months ended December 31, 2024, 2023 and 2022;

• Notes 12, 13, 15 and 26 to the consolidated financial statements; and

• Schedule II to the consolidated financial statements.

The information in this Form 6-K under “Financial Statements” and Exhibit 99.1 hereto do not reflect events (other than the Exchange) occurring after the filing of the 2024 Form 20-F and do not otherwise modify or update the disclosures in such filing, other than to reflect the Exchange. The information in this Form 6-K under “Financial Statements” and Exhibit 99.1 hereto should be read in conjunction with the 2024 Form 20-F.

#### Launch of Initial Public Offering
On April 29, 2025, the Company issued a press release announcing the launch of its initial public offering of its Class A Ordinary Shares. The press release, included as Exhibit 99.4 to this Form 6-K, is incorporated by reference as part of this Form 6-K.

### INCORPORATION BY REFERENCE
This report on Form 6-K and the Exhibits hereto shall be deemed to be filed with the Securities and Exchange Commission and are incorporated by reference into the Company’s registration statement on Form F-3 (File No. 333-272650) and to be a part thereof from the date on which this report is filed, to the extent not superseded by documents or reports subsequently filed.

### EXHIBIT INDEX

#### Exhibit
| 99.1 |     | Revised Consolidated Financial Statements of Aspen Insurance Holdings Limited Originally Included in the 2024 Form 20-F of Aspen Insurance Holdings Limited |
| 99.2 |     | Consent of Independent Registered Public Accounting Firm - Ernst & Young Ltd.                                                                               |
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