Company: AHL
Filing Date: 2025-03-20
Form Type: F-1/A
Source: 0001628280-25-014149
Chunk: 198

Company: ASPEN INSURANCE HOLDINGS LTD
Filing Date: 2025-03-20
Form: F-1/A
Chunk 198
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    |  28.1 |

For the twelve months ended December 31, 2024 . The analysis of the development by each segment is as follows:

Reinsurance. Net adverse reserve development of $24.4 million in 2024, due to the unfavorable impact of the LPT of $24.6 million, partially offset by favorable development on post-LPT accident years of $0.2 million.

Insurance. Net adverse reserve development of $11.2 million in 2024, due to adverse prior year development on post-LPT accident years of $0.8 million and the unfavorable movement of $10.4 million due to the impact of the LPT.

For the twelve months ended December 31, 2023 . The analysis of the development by each segment is as follows:

Reinsurance. Net reserve releases of $14.5 million in 2023, due to the favorable impact of the LPT of $20.2 million, partially offset by adverse reserve development on post-LPT accident years of $5.7 million.

Insurance. Net adverse reserve development of $75.3 million in 2023, due to adverse prior year development on post-LPT accident years of $26.6 million and the unfavorable movement of $48.7 million due to the impact of the LPT and retroactive accounting by deferring the gains on the contract over the settlement period.

We did not make any significant changes to the methodologies used in our reserving process between 2023 and 2024.

#### Reinsurance Premiums Payable
Reinsurance Premiums Payable. As at December 31, 2024, we had reinsurance premiums payables totaling $901.1 million compared to $1,416.6 million at December 31, 2023, a decrease of $515.5 million, primarily driven by the reduction in the fund withheld balance in regards to the LPT contract with Enstar.

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Table of C ontents

#### Critical Accounting Policies
We believe that the following are critical accounting policies used in the preparation of our consolidated financial statements. A statement of all the significant accounting policies we use to prepare our financial statements is included in the Notes to the consolidated financial statements. If factors such as those described in “Risk Factors” cause actual events to differ from the assumptions used in applying the accounting policies and calculating financial results, there could be a material adverse effect on our operating results, financial condition and liquidity.

#### Written Premium