Sec Form 3 Filing - Gries Robert JR @ Slide Insurance Holdings, Inc. - 2025-06-17

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Gries Robert JR 2. Issuer Name and Ticker or Trading Symbol Slide Insurance Holdings, Inc. [ SLDE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O SLIDE INSURANCE HOLDINGS, INC.,, 4221 W. BOY SCOUT BLVD., SUITE 200 3. Date of Earliest Transaction (MM/DD/YY) 06/17/2025 (Street) TAMPA, FL33607 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 626,587 ( 1 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Restricted Stock Units ( 2 ) ( 2 ) ( 2 ) Common Stock 10,967 ( 2 ) D Stock Option (right to buy) $ 1.38 ( 4 ) ( 3 ) 07/12/2033 Common Stock 206,250 ( 4 ) D Series A Preferred Stock ( 5 ) ( 5 ) ( 5 ) Common Stock 2,389,722 ( 5 ) I By GRM Family Limited Partnership ( 6 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Gries Robert JR C/O SLIDE INSURANCE HOLDINGS, INC., 4221 W. BOY SCOUT BLVD., SUITE 200 TAMPA, FL33607 X Signatures /s/ Jesse Schalk, Attorney-in-Fact for Robert Gries Jr. 06/17/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The number of shares of common stock reported gives effect to the 5.5-to-1 forward stock split, which will occur upon the closing of the issuer's initial public offering. ( 2 )Each restricted stock unit represents a contingent right to receive one share of the issuer's common stock. These restricted stock units vest in 12 equal monthly installments commencing on January 1, 2025 and ending on December 31, 2025, subject to the reporting person's continued service through each applicable vesting date. The number of underlying shares of common stock reported gives effect to the 5.5-to-1 forward stock split, which will occur upon the closing of the issuer's initial public offering. ( 3 )The option vests on July 14, 2025, subject to the reporting person's continued service through the applicable vesting date. ( 4 )The number of shares of common stock underlying stock options and the applicable exercise price give effect to the 5.5-to-1 forward stock split, which will occur upon the closing of the issuer's initial public offering. ( 5 )The Series A Preferred Stock is convertible into the issuer's common stock on a one-for-one basis and has no expiration date. All Series A Preferred Stock will be automatically converted into shares of common stock upon the closing of the issuer's initial public offering. The number of underlying shares of common stock reported gives effect to the 5.5-to-1 forward stock split, which will occur upon the closing of the issuer's initial public offering. ( 6 )The securities reported herein are held by GRM Family Limited Partnership, which is an entity controlled by the reporting person. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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