Neptune Insurance director plans $1.58M stock sale

A Neptune Insurance Holdings Inc. corporate development executive filed a Rule 144 notice to potentially sell 50,000 Class A shares acquired from stock option compensation.

Rhea-AI Filing Summary

Neptune Insurance Holdings Inc. (NP) is the issuer of Class A common stock that Jonathan Winant Carlon, Director of Corporate Development, has notified for potential resale under Rule 144. The notice covers 50,000 shares of Class A common stock to be sold through J.P. Morgan Securities LLC on the NYSE. The planned sale date is listed as September 14, 2026, and the shares were acquired on August 9, 2025 via a stock option exercise as compensation. Neptune Insurance Holdings Inc. reports 93,798,090 Class A shares outstanding as context for this planned transaction.

Key Figures

Shares to be sold: 50,000 shares of Class A common stock Aggregate market value of shares: $1,580,000 Shares outstanding: 93,798,090 shares +2 more

5 metrics

Shares to be sold 50,000 shares of Class A common stock Number of shares covered by the Rule 144 notice

Aggregate market value of shares $1,580,000 Market value associated with the 50,000 shares covered by the notice

Shares outstanding 93,798,090 shares Class A common shares outstanding referenced in the notice

Planned sale date September 14, 2026 Date listed for potential Rule 144 sale on the NYSE

Acquisition date of shares August 9, 2025 Date the 50,000 shares were acquired via stock option exercise as compensation

Key Terms

Rule 144, Stock Option Exercise, attorney-in-fact

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.

Stock Option Exercise financial

"Class A common stock | 08/09/2025 | Stock Option Exercise | Issuer"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

attorney-in-fact regulatory

"J.P. Morgan Securities LLC as agent and attorney-in-fact for Jonathan"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

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

What Rule 144 sale was filed involving Neptune Insurance Holdings Inc. (NP)?

The notice covers a potential sale of 50,000 shares of Neptune Insurance Holdings Inc. Class A common stock under Rule 144, to be sold through J.P. Morgan Securities LLC on the NYSE.

Who is the insider in the Neptune Insurance (NP) Rule 144 filing and what is their role?

The securities are for the account of Jonathan Winant Carlon, who is identified as Director of Corporate Development at Neptune Insurance Holdings Inc.

When were the Neptune Insurance (NP) shares to be sold under Rule 144 acquired?

The 50,000 Class A common shares were acquired on August 9, 2025 through a stock option exercise received as compensation from the issuer.

What is the size of Neptune Insurance’s (NP) Class A share base mentioned in the Rule 144 notice?

The notice states that there are 93,798,090 shares of Neptune Insurance Holdings Inc. Class A common stock outstanding, providing context for the planned 50,000-share sale.

Who is the broker for the planned Neptune Insurance (NP) Rule 144 sale?

The planned Rule 144 sale designates J.P. Morgan Securities LLC as the broker, acting as agent and attorney-in-fact for Jonathan Winant Carlon, with execution on the NYSE.

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

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Available on EDGAR 09/14/2026 - 05:12 PM Accepted by SEC EDGAR 09/14/2026 - 05:11 PM 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	0002085255
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	Neptune Insurance Holdings Inc.
SEC File Number	001-42878
Address of Issuer	400 6th St S, Suite 2 St. Petersburg, FLORIDA 33701
Phone	727-202-4815
Name of Person for Whose Account the Securities are To Be Sold	Jonathan Winant Carlon
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	Director of Corporate Development

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
Class A common stock	J.P. Morgan Securities LLC 270 Park Avenue - 10th Floor New York NY 10017	50000	1580000	93798090	09/14/2026	NYSE

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 *
Class A common stock	08/09/2025	Stock Option Exercise	Issuer			50000	08/09/2025	Compensation

* 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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	09/14/2026
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/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Jonathan Winant Carlon
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)