Neptune Insurance grants Duffy 191,896-share stock award

The new time-based award vests in quarterly installments through September 30, 2029, subject to Duffy's continuous service.

Rhea-AI Filing Summary

Neptune Insurance Holdings Inc. reported two September 30, 2026 transactions by Matthew Paul Duffy, identified as President & Chief Risk Officer: a time-based restricted stock unit award covering 191,896 Class A shares and withholding of 98,381 Class A shares for tax obligations related to RSU vesting and settlement. No shares were sold. The reported $27.35 is the closing price that day, not a sale price. The new award vests in four quarterly installments of 47,974 shares from December 31, 2028, through September 30, 2029, subject to continuous service.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Duffy Matthew Paul

Role President & Chief Risk Officer

Type	Security	Shares	Price	Value
Tax Withholding	Class A Common Stock F1, F2	98,381	$27.35	$2.69M
Grant/Award	Class A Common Stock F3, F2, F4	191,896	$0.00	$0.00

Holdings After Transaction: Class A Common Stock — 2,045,368 shares (Direct)

Footnotes (4)

1. F1. Represents shares of Class A Common Stock withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of restricted stock units on September 30, 2026. No shares were sold by the Reporting Person. The price reported in Column 4 is the closing price of the Class A Common Stock on the New York Stock Exchange on September 30, 2026.
2. F2. Includes 527,902 shares of Class A Common Stock underlying an award of time-based restricted stock units, as amended, which remain held directly by the Reporting Person. The restricted stock units vested as to 263,951 shares on September 30, 2026 and vest as to the remaining 527,902 shares in eight quarterly installments of 65,987 or 65,988 shares each on the last day of each calendar quarter thereafter through September 30, 2028, in each case subject to the continuous service of the Reporting Person through the applicable vesting date.
3. F3. Represents shares of Class A Common Stock underlying an award of time-based restricted stock units granted on September 30, 2026. The restricted stock units vest in four quarterly installments of 47,974 shares each on the last day of each calendar quarter from December 31, 2028 through September 30, 2029, in each case subject to the continuous service of the Reporting Person through the applicable vesting date.
4. F4. Includes 191,896 shares of Class A Common Stock underlying the award of time-based restricted stock units reported on this Form 4.

Key Figures

Shares withheld for tax obligations: 98,381 shares Closing price: $27.35 per share New RSU award: 191,896 shares +3 more

6 metrics

Shares withheld for tax obligations 98,381 shares Class A shares withheld on September 30, 2026.

Closing price $27.35 per share Class A Common Stock closing price on September 30, 2026.

New RSU award 191,896 shares Class A shares underlying the time-based award granted September 30, 2026.

New award installment 47,974 shares Each of four quarterly installments in the new award.

Prior award vested 263,951 shares Shares vested on September 30, 2026, under a separate amended award.

Prior award remaining 527,902 shares Shares underlying the separate amended award that remain held directly.

Key Terms

time-based restricted stock units, tax withholding obligations, continuous service, quarterly installments

4 terms

time-based restricted stock units financial

"award of time-based restricted stock units granted on September 30, 2026"

Time-based restricted stock units are a form of employee compensation where individuals are granted company shares that are earned over a set period, often as a reward for staying with the company. These shares typically become fully owned and transferable only after passing specific time milestones, encouraging long-term commitment. For investors, they highlight a company's focus on employee retention and can influence future stock supply and company stability.

tax withholding obligations financial

"to satisfy the Reporting Person's tax withholding obligations"

continuous service financial

"subject to the continuous service of the Reporting Person"

quarterly installments financial

"vest in four quarterly installments of 47,974 shares each"

FAQ

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

What transactions did NP's President & Chief Risk Officer Matthew Paul Duffy report on September 30, 2026?

He received a time-based restricted stock unit award covering 191,896 Class A shares, and 98,381 Class A shares were withheld by the issuer for tax obligations related to RSU vesting and settlement. No shares were sold; $27.35 was the closing price that day. No Rule 10b5-1 plan is reported.

What happened to Matthew Paul Duffy's prior RSU award?

A separate amended time-based RSU award vested as to 263,951 shares on September 30, 2026. The remaining 527,902 shares remain held directly by Duffy and vest in eight quarterly installments of 65,987 or 65,988 shares through September 30, 2028, subject to his continuous service through each applicable vesting date.

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

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Available on EDGAR 10/02/2026 - 04:49 PM Accepted by SEC EDGAR 10/02/2026 - 04:48 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).

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^*

Duffy Matthew Paul

(Last) (First) (Middle)

C/O NEPTUNE INSURANCE HOLDINGS INC.

400 6TH ST S STE 2

(Street)

SAINT PETERSBURG FLORIDA 33701

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Neptune Insurance Holdings Inc. [ NP ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)	X	Other (specify below)
	President & Chief Risk Officer		Positions held at subsidiary

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2026

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
Class A Common Stock	09/30/2026		F		98,381(1)	D	$27.35	1,853,472(2)	D
Class A Common Stock	09/30/2026		A		191,896(3)	A	$0	2,045,368(2)(4)	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. Represents shares of Class A Common Stock withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of restricted stock units on September 30, 2026. No shares were sold by the Reporting Person. The price reported in Column 4 is the closing price of the Class A Common Stock on the New York Stock Exchange on September 30, 2026.

2. Includes 527,902 shares of Class A Common Stock underlying an award of time-based restricted stock units, as amended, which remain held directly by the Reporting Person. The restricted stock units vested as to 263,951 shares on September 30, 2026 and vest as to the remaining 527,902 shares in eight quarterly installments of 65,987 or 65,988 shares each on the last day of each calendar quarter thereafter through September 30, 2028, in each case subject to the continuous service of the Reporting Person through the applicable vesting date.

3. Represents shares of Class A Common Stock underlying an award of time-based restricted stock units granted on September 30, 2026. The restricted stock units vest in four quarterly installments of 47,974 shares each on the last day of each calendar quarter from December 31, 2028 through September 30, 2029, in each case subject to the continuous service of the Reporting Person through the applicable vesting date.

4. Includes 191,896 shares of Class A Common Stock underlying the award of time-based restricted stock units reported on this Form 4.

Remarks:

	/s/ James Steiner, as Attorney-in-Fact	10/02/2026
	** 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)