Neptune Insurance director proposes $2.47M share sale

The listed common shares were acquired through previously exercised options, while the notice records three earlier RSU sales.

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

Rhea-AI Filing Summary

Neptune Insurance Holdings Inc. (NP) lists 88,000 common shares to be sold by Matthew Duffy, an officer and director, with an aggregate market value of $2,466,596 and an approximate sale date of November 9, 2026.

The listed shares were acquired from the issuer on August 28, 2025, through previously exercised options, with cash payment. The notice also reports three RSU sales by Duffy: 84,441 shares on October 8, 2026, for gross proceeds of $2,372,374.12; 41,392 shares on October 6, 2026, for $1,123,937.49; and 39,737 shares on October 2, 2026, for $1,099,541.81.

Key Figures

Common shares to be sold: 88,000 shares Aggregate market value: $2,466,596.00 RSUs sold: 84,441 shares +5 more

8 metrics

Common shares to be sold 88,000 shares Approximate sale date November 9, 2026

Aggregate market value $2,466,596.00 Common shares to be sold

RSUs sold 84,441 shares October 8, 2026

Gross proceeds $2,372,374.12 RSU sale on October 8, 2026

RSUs sold 41,392 shares October 6, 2026

Gross proceeds $1,123,937.49 RSU sale on October 6, 2026

RSUs sold 39,737 shares October 2, 2026

Gross proceeds $1,099,541.81 RSU sale on October 2, 2026

Key Terms

Previously Exercised Options, Aggregate Market Value, RSU, Gross Proceeds

4 terms

Previously Exercised Options financial

"Nature of Acquisition Transaction"

Aggregate Market Value financial

"Aggregate Market Value"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

RSU financial

"Title of Securities Sold"

Restricted stock units (RSUs) are a form of company shares given to employees as part of their compensation, usually with certain restrictions or conditions, such as remaining with the company for a set period. When these restrictions lift, employees receive actual shares that they can sell or hold. For investors, RSUs can impact a company's stock supply and reflect the company's commitment to attracting and retaining talent.

Gross Proceeds financial

"Gross Proceeds"

The total amount of cash a company receives from a financing event or sale before any fees, expenses, taxes or deductions are taken out. Investors watch gross proceeds because it shows the raw scale of new capital being raised—think of it as the paycheck amount before withholdings—which helps assess how much funding is available for operations, growth, debt payoff or how much shareholder dilution might occur once costs are removed.

FAQ

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

How many NP shares is Matthew Duffy proposing to sell?

Matthew Duffy, identified as an officer and director, is listed for a sale of 88,000 common shares, with an aggregate market value of $2,466,596 and an approximate sale date of November 9, 2026.

What recent RSU sales did Matthew Duffy report?

The notice lists three RSU sales: 84,441 shares on October 8, 2026, for gross proceeds of $2,372,374.12; 41,392 shares on October 6, 2026, for $1,123,937.49; and 39,737 shares on October 2, 2026, for $1,099,541.81.

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

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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	0002077387
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 Street S St. Petersburg FLORIDA 33701
Phone	727-202-4815
Name of Person for Whose Account the Securities are To Be Sold	MATTHEW DUFFY
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
Relationship to Issuer	Director

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	88000	2466596.00	94736798	11/09/2026	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 *
Common	08/28/2025	Previously Exercised Options	Issuer			88000	08/28/2025	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
Matthew Duffy 400 6th Street S St. Petersburg FL 33701	RSU	10/08/2026	84441	2372374.12
Matthew Duffy 400 6th Street S St. Petersburg FL 33701	RSU	10/06/2026	41392	1123937.49
Matthew Duffy 400 6th Street S St. Petersburg FL 33701	RSU	10/02/2026	39737	1099541.81

144: Remarks and Signature

Remarks
Date of Notice	11/09/2026
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 Duffy
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)