Company: AHL
Filing Date: 2025-05-08
Form Type: 424B4
Source: 0001628280-25-023859
Chunk: 6

Company: ASPEN INSURANCE HOLDINGS LTD
Filing Date: 2025-05-08
Form: 424B4
Chunk 6
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 to compare sales performance by period.

#### Net written premiums
are gross written premiums less ceded written premiums. Ceded written premiums are the amounts recognized for the purchases of reinsurance or retrocessional coverage, and are accounted for using the same methodology as gross written premiums.

#### Net earned premiums
are the earned portion of an insurance contract. Net written premium is earned/recognized proportionately over the coverage period and associated risk patterns. Premiums written which are not yet recognized as earned are recorded on the balance sheet as unearned premiums.

#### Losses and loss adjustment expenses
represents the amount paid or expected to be paid to claimants, including the cost of investigating, resolving and processing these claims, net of recoveries under the reinsurance and retrocession agreements. This can be broken out into the following categories:

• Current accident year losses, excluding catastrophe losses , represents the losses arising in the current financial period, excluding any prior year reserve development and catastrophe losses; and

•

#### Catastrophe losses
are losses that arise from various unpredictable events, including, but not limited to, weather-related natural catastrophes, pandemic or contagious disease and man-made events such as acts of war and terrorism.

Prior year adverse/(favorable) reserve development - post-LPT years:

Prior year adverse/(favorable) reserve development represents the strengthening/(releases) in net ultimate loss reserves and claim adjustment expense reserves at each reporting date for claims which occurred in previous calendar years/periods.

Aspen entered into a loss portfolio transfer (the “LPT”) with a subsidiary of Enstar Group Limited (“Enstar”). Under the terms of the LPT, Enstar’s subsidiary will reinsure net losses incurred on or prior to December 31, 2019 on all of Aspen’s net loss reserves of $3.12 billion as of September 30, 2021. The LPT provides a limit of $3.57 billion for 2019 and prior accident year loss development.

Prior year reserve development post-LPT years represents the performance of our business for accident years 2020 onwards, reflecting the underlying underwriting performance of the ongoing business.

#### Adjusted losses and loss adjustment expenses
is a non-GAAP financial measure. It is the sum of current accident year losses, catastrophe losses and prior year reserve strengthening/(releases) post-LPT years. Adjusted losses and loss adjustment expenses excludes the change in the deferred gain on retroactive reinsurance contracts

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and represents the performance