Slide Insurance officer plans $275K stock sale

Company officer Matthew Larson files Rule 144 notice covering a planned sale of 11,374 SLDE shares after option exercise.

Rhea-AI Filing Summary

Slide Insurance Holdings, Inc. (SLDE) officer Matthew Larson filed a Rule 144 notice to sell up to 11,374 shares of common stock on September 3, 2026, following an exercise of stock options for cash, through Morgan Stanley Smith Barney LLC.

The notice also reports that 13,750 shares of common stock were sold on June 10, 2026 under a Rule 10b5-1 trading plan for an aggregate amount of $234,707.38.

Key Figures

Shares proposed to be sold: 11,374 shares Proposed aggregate market value: $275,023.32 Shares sold in prior 3 months: 13,750 shares +3 more

6 metrics

Shares proposed to be sold 11,374 shares Common stock covered by the Rule 144 notice for September 3, 2026

Proposed aggregate market value $275,023.32 Aggregate market value of 11,374 common shares to be sold

Shares sold in prior 3 months 13,750 shares Common stock sold on June 10, 2026 under a Rule 10b5-1 plan

Aggregate amount of prior sale $234,707.38 Total proceeds from the June 10, 2026 sale of 13,750 shares

Proposed sale date September 3, 2026 Date associated with the planned Rule 144 sale of 11,374 shares

Prior sale date June 10, 2026 Date of 10b5-1 sale of 13,750 common shares

Key Terms

Rule 144, 10b5-1, Exercise of Stock Options

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

10b5-1 regulatory

"10b5-1 Sales for MATTHEW LARSON 4221 W. Boy Scout Blvd."

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Exercise of Stock Options financial

"Common | 09/03/2026 | Exercise of Stock Options | Issuer"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filing mean for Slide Insurance Holdings (SLDE)?

The Form 144 reports that officer Matthew Larson intends to sell up to 11,374 SLDE common shares on or about September 3, 2026, after exercising stock options for cash, in reliance on Rule 144 resale provisions.

How many Slide Insurance (SLDE) shares are covered by the new Form 144?

The filing covers up to 11,374 shares of SLDE common stock with a stated aggregate market value of $275,023.32, to be sold through Morgan Stanley Smith Barney LLC, associated with an exercise of stock options on September 3, 2026.

Were there recent SLDE share sales by Matthew Larson before this notice?

Yes. The Form 144 states that 13,750 shares of Slide Insurance common stock were sold on June 10, 2026 for an aggregate amount of $234,707.38, identified as 10b5-1 sales for Matthew Larson.

What is the relationship of the seller to Slide Insurance Holdings (SLDE)?

The seller, Matthew Larson, is identified as an officer of Slide Insurance Holdings, Inc. The Form 144 notice relates to sales for his account, including sales aggregated under Rule 144 requirements.

Which broker is handling the planned SLDE share sale in this Form 144?

The planned sale of up to 11,374 SLDE shares is listed as being through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, New York, in connection with the Rule 144 transaction.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/03/2026 - 05:11 PM EDT Accepted by SEC EDGAR 09/03/2026 - 04:35 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002114934
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	SLIDE INSURANCE HOLDINGS INC
SEC File Number	001-42707
Address of Issuer	4221 W. Boy Scout Blvd., Suite 200 Tampa FLORIDA 33607
Phone	8137482030
Name of Person for Whose Account the Securities are To Be Sold	MATTHEW LARSON
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	11374	275023.32	116811719	09/03/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/03/2026	Exercise of Stock Options	Issuer			11374	09/03/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for MATTHEW LARSON 4221 W. Boy Scout Blvd., Suite 200 Tampa FL 33607	Common	06/10/2026	13750	234707.38

144: Remarks and Signature

Remarks
Date of Notice	09/03/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/04/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Matthew Paul Larson
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)