Neptune Insurance withholds 64,777 CFO shares for taxes

The new restricted-stock-unit award vests in quarterly installments through September 2029, subject to continuous service through each vesting date.

Rhea-AI Filing Summary

Neptune Insurance Holdings Inc. Chief Financial Officer James Steiner had 64,777 Class A common shares withheld by the issuer on September 30, 2026, to satisfy tax withholding obligations tied to vesting and settlement of restricted stock units. The reported $27.35 per-share figure was the stock’s closing price that day; the footnote says no shares were sold.

Steiner also received an award covering 75,288 shares underlying time-based restricted stock units, scheduled to vest in four quarterly installments of 18,822 shares from December 31, 2028, through September 30, 2029, subject to continuous service through each vesting date. Reported holdings include 95,500 stock options with a $19.00 exercise price, expiring September 18, 2035, and 3,749,050 Class A shares held indirectly as trustee of the Living Trust of James Edward Steiner dated July 7, 2016.

Insider Trade Summary

4 transactions reported

Mixed 4 txns

Insider Steiner James

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Tax Withholding	Class A Common Stock F1, F2	64,777	$27.35	$1.77M
Grant/Award	Class A Common Stock F3, F2, F4	75,288	$0.00	$0.00
holding	Stock Option (right to buy) F5, F6	--	--	--
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 546,176 shares (Direct); Stock Option (right to buy) — 95,500 contracts (Direct); Class A Common Stock — 3,749,050 shares (Indirect, By Self as Trustee of the Living Trust of James Edward Steiner dated July 7, 2016)

Footnotes (6)

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 357,110 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 178,555 shares on September 30, 2026 and vest as to the remaining 357,110 shares in eight quarterly installments of 44,638 or 44,639 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 18,822 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 75,288 shares of Class A Common Stock underlying the award of time-based restricted stock units reported on this Form 4.
5. F5. The stock option fully vested upon the closing of (and became exercisable in connection with) the Issuer's initial public offering on October 2, 2025.
6. F6. The Reporting Person's Form 4 filed on October 3, 2025 inadvertently reported 95,000 stock options beneficially owned following the reported transactions in Column 9 of Table II. The correct amount was 95,500, as reported in Column 5 of Table II of that Form 4.

Key Figures

Shares withheld: 64,777 shares Closing share price: $27.35 per share RSU award: 75,288 shares +5 more

8 metrics

Shares withheld 64,777 shares September 30, 2026; tax withholding for restricted stock unit vesting and settlement

Closing share price $27.35 per share Class A common stock closing price on September 30, 2026

RSU award 75,288 shares Awarded September 30, 2026

RSU vesting installment 18,822 shares Each of four quarterly installments

Stock options 95,500 options Directly held; underlying Class A common stock

Option exercise price $19.00 per share Reported stock options

Trust-held Class A shares 3,749,050 shares Held indirectly as trustee of the Living Trust of James Edward Steiner dated July 7, 2016

Option expiration September 18, 2035 Reported stock options

Key Terms

restricted stock units, tax withholding obligations, Stock Option (right to buy), continuous service

4 terms

restricted stock units financial

"vesting and settlement of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"satisfy the Reporting Person's tax withholding obligations"

Stock Option (right to buy) financial

"Stock Option (right to buy)"

continuous service financial

"subject to the continuous service of the Reporting Person"

FAQ

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

How many NP shares did Chief Financial Officer James Steiner have withheld?

The issuer withheld 64,777 Class A common shares on September 30, 2026, to satisfy tax withholding obligations related to restricted stock unit vesting and settlement. The reported $27.35 per-share figure was the closing price that day, and the footnote says no shares were sold.

What RSU award did NP Chief Financial Officer James Steiner receive?

Steiner received an award covering 75,288 shares underlying time-based restricted stock units. The units vest in four quarterly installments of 18,822 shares from December 31, 2028, through September 30, 2029, subject to his continuous service through each vesting date.

What stock options did James Steiner report for NP?

The reported position includes 95,500 stock options to buy Class A common stock at an exercise price of $19.00 per share, expiring September 18, 2035. The option fully vested and became exercisable upon the issuer’s initial public offering closing on October 2, 2025.

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

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Available on EDGAR 10/02/2026 - 04:50 PM Accepted by SEC EDGAR 10/02/2026 - 04:49 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^*

Steiner James

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

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		64,777(1)	D	$27.35	470,888(2)	D
Class A Common Stock	09/30/2026		A		75,288(3)	A	$0	546,176(2)(4)	D
Class A Common Stock								3,749,050	I	By Self as Trustee of the Living Trust of James Edward Steiner dated July 7, 2016

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
Stock Option (right to buy)	$19							10/02/2025(5)	09/18/2035	Class A Common Stock	95,500		95,500(6)	D

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 357,110 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 178,555 shares on September 30, 2026 and vest as to the remaining 357,110 shares in eight quarterly installments of 44,638 or 44,639 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 18,822 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 75,288 shares of Class A Common Stock underlying the award of time-based restricted stock units reported on this Form 4.

5. The stock option fully vested upon the closing of (and became exercisable in connection with) the Issuer's initial public offering on October 2, 2025.

6. The Reporting Person's Form 4 filed on October 3, 2025 inadvertently reported 95,000 stock options beneficially owned following the reported transactions in Column 9 of Table II. The correct amount was 95,500, as reported in Column 5 of Table II of that Form 4.

Remarks:

	/s/ James Steiner	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)