Company: SLDE
Filing Date: 2025-06-18
Form Type: 424B4
Source: 0001193125-25-142810
Chunk: 158

Company: Slide Insurance Holdings, Inc.
Filing Date: 2025-06-18
Form: 424B4
Chunk 158
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 and estimated reinsurance costs, are used to calculate the most optimal policy selection. Finally, the Company’s risk
management team presents the results to the Underwriting Advisory Council and a decision is made as to which policies to apply for a given renewal period.

The Company currently expects to participate in Citizens depopulation program in the short term consistent with its past practice. However,
the Company continually evaluates its participation in the Citizens depopulation program, and may in the future decrease, or cease its participation in the program entirely, subject to market conditions as well as the underlying quality of the
policies subject to the program. See “Risk Factors—We may pursue opportunities to participate in Citizens’ take-out program and directly assume policies issued by Citizens to policyholders who were otherwise unable to obtain private insurance. Take-out opportunitiesare subject to a number of timing and execution risks, and we may fail to participate in Citizens’ take-out programson terms that are ultimately profitable to us, or at all” for more information.

Slide’s Criteria for Assuming Citizens Policies

The Company evaluates several core criteria during its underwriting process with Citizens. The most important criteria are geographic
distribution, distance to coast, risk characteristics such as construction, occupancy, square footage, year of construction, roof shape, roof age, and claims activity.

A summary of the criteria for the policies assumed in calendar year 2024 is provided below and compared to the Company’s portfolio at year-end 2023. As illustrated in the tabular disclosure in the sub-sections that follow, the risk characteristics of the assumed Citizens policies closely tracks the risk
characteristics of the Company’s

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stand-alone historical portfolio. As a result, the Company expects the financial performance of the Citizens policies it assumes to closely track the financial performance of the balance of the Company’s portfolio of policies. In the tables that follow in each sub-headingin this section, the following terms have the meanings ascribed to them below:

| • |     | PIF: Policies in force |

| • |     | Locations: Number of buildings |

| • |     | TIV: Total Insured Value, including Coverages A (dwelling), B (other structures), C (contents), and D 
 (loss of use)                                                                                         |

| • |     | Average TIV: TIV divided by Locations |

| • |     | Premium: In force premium |

| • |     | Average Premium: Premium divided by Locations |

For the reader’s reference, the “County” heading table in