Slide Insurance director sells 56,424 SLDE shares

Slide Insurance Holdings director Robert Gries Jr., through GRM Family Limited Partnership, reported open-market sales of a total of 56,424 shares of SLDE common stock over two days.

Rhea-AI Filing Summary

Slide Insurance Holdings director Robert Gries Jr., through GRM Family Limited Partnership, reported open-market sales of a total of 56,424 shares of SLDE common stock over two days. The partnership sold 28,212 shares on March 17 at an average of $18.35 per share and 28,212 shares on March 18 at an average of $17.85 per share. These transactions were executed under a pre-arranged Rule 10b5-1 trading plan adopted on December 12, 2025. After the sales, indirect holdings through the partnership were 1,974,841 shares, and a separate line shows 843,804 shares held directly, indicating he retains a substantial position in the company.

Insider Trade Summary 10b5-1

Net Seller: 56,424 shares

Net Sell 3 txns

Insider Gries Robert JR

Role Director

Sold 56,424 shs ($1.02M)

Type	Security	Shares	Price	Value
Sale	Common Stock	28,212	$17.85	$504K
Sale	Common Stock	28,212	$18.35	$518K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 1,974,841 shares (Indirect, By GRM Family Limited Partnership); Common Stock — 843,804 shares (Direct)

Footnotes (4)

1. F1. Sold pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 12, 2025.
2. F2. Represents the weighted average price of the shares sold. The prices of the shares sold pursuant to the transactions ranges from $18.21 to $18.45 per share. The Reporting Person, upon request, will provide the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price.
3. F3. 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.
4. F4. Represents the weighted average price of the shares sold. The prices of the shares sold pursuant to the transactions ranges from $17.50 to $18.27 per share. The Reporting Person, upon request, will provide the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price.

FAQ

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What insider transactions did SLDE director Robert Gries Jr. report?

He reported selling 56,424 Slide Insurance Holdings (SLDE) common shares in open-market trades. The sales occurred in two equal blocks of 28,212 shares on March 17 and March 18, 2026, at average prices of $18.35 and $17.85 per share, respectively.

Were the recent SLDE insider share sales pre-planned?

Yes. The reported sales were made under a pre-arranged Rule 10b5-1 trading plan. This plan was adopted on December 12, 2025, meaning the timing of the March 2026 trades was scheduled in advance rather than decided opportunistically.

Who actually holds the SLDE shares sold in this Form 4?

The sold Slide Insurance Holdings shares were held by GRM Family Limited Partnership. The partnership is controlled by Robert Gries Jr., who disclaims beneficial ownership beyond his pecuniary interest, so the trades are attributed to this related entity rather than personal direct holdings.

How many SLDE shares does Robert Gries Jr. still hold after these sales?

After the transactions, indirect holdings through GRM Family Limited Partnership totaled 1,974,841 SLDE shares. A separate Form 4 line shows an additional 843,804 shares held directly, indicating that he continues to own a sizable overall stake in Slide Insurance Holdings.

What prices were received in the SLDE insider share sales?

One sale block averaged $18.35 per share, while the other averaged $17.85. Footnotes state these represent weighted average prices, with individual transaction prices ranging between $18.21 and $18.45, and between $17.50 and $18.27, across the reported trades.

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Accepted by SEC EDGAR 03/18/2026 - 08:04 PM Learn about SEC filing dates

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Gries Robert JR

(Last) (First) (Middle)

C/O SLIDE INSURANCE HOLDINGS, INC.

4221 W. BOY SCOUT BLVD., SUITE 200

(Street)

TAMPA FLORIDA 33607

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/17/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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	03/17/2026		S		28,212(1)	D	$18.35(2)	2,003,053	I	By GRM Family Limited Partnership(3)
Common Stock	03/18/2026		S		28,212(1)	D	$17.85(4)	1,974,841	I	By GRM Family Limited Partnership(3)
Common Stock								843,804	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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. Sold pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 12, 2025.

2. Represents the weighted average price of the shares sold. The prices of the shares sold pursuant to the transactions ranges from $18.21 to $18.45 per share. The Reporting Person, upon request, will provide the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price.

3. 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.

4. Represents the weighted average price of the shares sold. The prices of the shares sold pursuant to the transactions ranges from $17.50 to $18.27 per share. The Reporting Person, upon request, will provide the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price.

	/s/ Robert Gries Jr.	03/18/2026
	** Signature of Reporting Person	Date
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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)