Company: SLDE
Filing Date: 2025-06-18
Form Type: 424B4
Source: 0001193125-25-142810
Chunk: 293

Company: Slide Insurance Holdings, Inc.
Filing Date: 2025-06-18
Form: 424B4
Chunk 293
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 | 109,903 |   |
| Net balances at December 31   |     |   | 254,436 |   |     |   | 144,475 |   |
| Plus reinsurance recoverables |     |   | 341,051 |   |     |   | 105,092 |   |
| Balances at December 31       |     | $ | 595,487 |   |     | $ | 249,567 |   |

The establishment of loss and LAE reserves is an inherently uncertain process and changes in loss and LAE reserve estimates are expected as these estimates are subject to the outcome of future events. Changes in estimates, or differences between estimates and amounts ultimately paid, are reflected in the operating results of the period during which such adjustments are adjusted. During the year ended December 31, 2024, the Company recognized favorable development of losses related to prior years of approximately $22,968 primarily to reduce non-catastrophe reserves in response to lower than expected payments. During the year ended December 31, 2023, the Company recognized favorable development of losses related to prior years of approximately $4,173 primarily to reduce catastrophe reserves in response to lower than expected payments. F-54

Slide Insurance Holdings, Inc. Notes to Consolidated Financial Statements For the years ended December 31, 2024 and 2023 (Dollar amounts in thousands, except share and per share amounts, unless otherwise stated) The following is supplementary information about incurred and paid losses and LAE development as of December 31, 2024, net of reinsurance, as well as cumulative claim frequency and the total of incurred-but-not-reportedliabilities plus expected development on reported claims included within the net incurred losses and LAE amounts. The information about incurred and paid losses and LAE development for the years ended December 31, 2023 and 2022 is presented as supplementary information and is unaudited. The information about incurred and paid losses and LAE development for the years ended December 31, 2020 to December 31, 2021, is presented for illustration purposes as the Company did not have any premiums or losses in those accident years.

|               |     | Incurred Loss and Loss Adjustment Expenses, 
                          Net of Reinsurance 
                         For the Years Ended 
                                December 31, |   |     |      |   |     |      |         |     |      |         |     |      |         |     | Total