Company: SLDE
Filing Date: 2025-06-18
Form Type: 424B4
Source: 0001193125-25-142810
Chunk: 202

Company: Slide Insurance Holdings, Inc.
Filing Date: 2025-06-18
Form: 424B4
Chunk 202
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     | each of the directors and named executive officers individually; |

| • |     | all directors and executive officers as a group; |

| • |     | each selling stockholder; and |

| • |     | each person whom we know to own beneficially more than 5% of our common stock. |

In accordance with the rules of the SEC, beneficial ownership includes voting or investment power with respect to securities and includes the shares issuable pursuant to stock options that are exercisable within 60 days of March 31, 2025. Shares issuable pursuant to stock options and restricted stock units are deemed outstanding for computing the percentage of the person holding such options but are not outstanding for computing the percentage of any other person. The number of shares of common stock outstanding after this offering includes 16,666,667 shares of common stock being offered for sale by us in this offering. The percentage of beneficial ownership for the following table is based on 56,893,292 shares of common stock outstanding as of March 31, 2025, and 124,934,085 shares of common stock outstanding after the completion of this offering, and gives effect to the Stock Split and the automatic conversion of 51,374,125 shares of our Series A preferred stock into 51,374,125 shares of common stock, which will occur upon the closing of this offering, as if such Stock Split and automatic conversion occurred as of March 31, 2025. In addition, the following table does not reflect any shares of common stock that may be purchased in this offering pursuant to our directed share program as described under “ Underwriting—Directed Share Program.” Unless otherwise indicated, the address for each listed stockholder is: c/o Slide Insurance Holdings, Inc., 4221 W. Boy Scout Blvd., Suite 200, Tampa, Florida 33607. To our knowledge, except as indicated in the footnotes to this table and pursuant to applicable community property laws, the persons named in the table have sole voting and investment power with respect to all shares of common stock. 146

|                                                                   |     | Shares Beneficially Owned Before the Offering(1) |           |     |             |       |   |     |              |            |     |             |       |   |     | % Total              
 Outstanding          |       |   |     | % Total       
 Voting        
 Power         
 Before        
 this          
 Offering      |       |   |     | Shares of Common Stock 
 Being Offered          |           |