Company: AHL
Filing Date: 2025-05-08
Form Type: 424B4
Source: 0001628280-25-023859
Chunk: 204

Company: ASPEN INSURANCE HOLDINGS LTD
Filing Date: 2025-05-08
Form: 424B4
Chunk 204
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31, 2024 was $3,950.6 million. The following tables show the effect on estimated net reserves for losses and loss expenses as at December 31, 2024 of a change in two of the most critical assumptions in establishing reserves: (i) loss emergence patterns, accelerated or decelerated by three and six months; and (ii) expected loss ratios varied by plus or minus five and ten percent. Accelerated loss emergence patterns indicates a higher development percentage of losses, therefore requiring lower IBNR than previously expected and hence resulting in a lower ultimate.

Management believes that these scenarios present a reasonable range of variability around the booked reserves using standard actuarial techniques. Loss reserves may vary beyond these scenarios in periods of heightened or reduced claim activity. The reserves resulting from the changes in the assumptions are not additive and should be considered separately. The following tables vary the assumptions employed therein independently. In addition, the tables below do not adjust any parameters other than the ones described above.

Net reserve for losses and loss adjustment expenses as at December 31, 2024 — Sensitivity to loss emergence patterns

| Change in assumption     |     | Reserve for losses and loss expenses 
 ($ in millions)                      |         |
|:-------------------------|:----|:-------------------------------------|--------:|
| Six month acceleration   |     | $                                    | 3,712.6 |
| Three month acceleration |     | $                                    | 3,822.6 |
| No change (selected)     |     | $                                    | 3,950.6 |
| Three month deceleration |     | $                                    | 4,110.5 |
| Six month deceleration   |     | $                                    | 4,304.6 |

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Net reserve for losses and loss adjustment expenses as at December 31, 2024 — Sensitivity to expected loss ratios

| Change in assumption |     | Reserve for losses and loss expenses 
 ($ in millions)                      |         |
|:---------------------|:----|:-------------------------------------|--------:|
| 10% favorable        |     | $                                    | 3,575.2 |
| 5% favorable         |     | $                                    | 3,762.9 |
| No change (selected) |     | $                                    | 3,950.6 |
| 5% unfavorable       |     | $                                    | 4,138.3 |
| 10% unfavorable      |