ACIC CEO exercises stock units, pays taxes in shares

American Coastal Insurance Corp President & CEO Brad Martz exercised equity awards and settled related taxes using shares.

Rhea-AI Filing Summary

American Coastal Insurance Corp President & CEO Brad Martz exercised equity awards and settled related taxes using shares. On April 3 2026, he acquired 25,903 shares of common stock through the conversion of performance stock units, restricted stock units, and dividend equivalent units.

To cover tax obligations on this vesting, 10,365 common shares were withheld at $10.97 per share in a tax-withholding disposition. After these compensation-related transactions, Martz directly held 381,481 shares of American Coastal common stock. The actions reflect routine equity award vesting rather than open-market buying or selling.

Insider Trade Summary

19,427 shares exercised/converted

Exercise 8 txns

Insider MARTZ BRAD

Role President & CEO

Type	Security	Shares	Price	Value
Exercise	Performance Stock Units	11,654	$0.00	$0.00
Exercise	Restricted Stock Units	5,826	$0.00	$0.00
Exercise	Dividend Equivalent Units	403	$11.31	$5K
Exercise	Dividend Equivalent Units	246	$11.85	$3K
Exercise	Dividend Equivalent Units	806	$11.31	$9K
Exercise	Dividend Equivalent Units	492	$11.85	$6K
Exercise	Common Stock	25,903	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	10,365	$10.97	$114K

Holdings After Transaction: Performance Stock Units — 82,197 contracts (Direct); Restricted Stock Units — 41,101 contracts (Direct); Dividend Equivalent Units — 10,676 contracts (Direct); Common Stock — 381,481 shares (Direct)

Footnotes (6)

1. F1. Each stock unit represents a conditional right to receive one share of the company's common stock.
2. F2. The performance units are subject to vesting over three years with one third, rounded down to the nearest whole share of stock, vesting in each period.
3. F3. The number of shares of common stock that will be delivered for each performance stock unit depends on the achievement of certain performance factors. Depending on actual performance, the number of shares of common stock delivered upon the vesting date (based on the terms outlined in the respective award agreement) can range from 0% to 150% of the number presented above.
4. F4. The restricted stock units are subject to vesting over three years with one third, rounded down to the nearest whole share of stock, vesting in each period.
5. F5. The dividend equivalent units will vest proportionately with the underlying restricted stock units to which they relate.
6. F6. The dividend equivalent units will vest proportionately with the underlying performance stock units to which they relate.

Key Figures

Common shares acquired via award conversion: 25,903 shares Shares withheld for taxes: 10,365 shares Tax-withholding price: $10.97 per share +3 more

6 metrics

Common shares acquired via award conversion 25,903 shares Common stock from exercising performance, restricted and dividend units on April 3 2026

Shares withheld for taxes 10,365 shares Tax-withholding disposition of common stock at $10.97 per share

Tax-withholding price $10.97 per share Price used for 10,365 common shares delivered for tax liability

Common shares held after transactions 381,481 shares Direct ACIC common stock ownership by CEO Brad Martz after April 3 2026

Derivative exercises in filing 19,427 units Total derivative shares exercised (M-code) per transaction summary

Tax-withholding transactions count 1 transaction Number of F-code tax-withholding dispositions reported

Key Terms

Performance Stock Units, Restricted Stock Units, Dividend Equivalent Units, tax-withholding disposition, +1 more

5 terms

Performance Stock Units financial

"security_title: "Performance Stock Units""

Performance stock units are a type of company award that grants employees shares of stock only if certain performance goals are met. They motivate employees to work toward specific company achievements, aligning their interests with those of shareholders. For investors, they can influence a company's future stock supply and reflect management’s confidence in reaching key targets.

Restricted Stock Units financial

"security_title: "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.

Dividend Equivalent Units financial

"security_title: "Dividend Equivalent Units""

Dividend equivalent units are bookkeeping credits that mirror cash dividends paid on actual shares, granted to holders of stock-based awards such as restricted stock units or deferred compensation. They matter to investors because they increase a company’s reported employee compensation cost and can lead to issuance of more shares or cash payouts over time, similar to extra pay linked to ownership that affects shareholder dilution and corporate cash flow.

tax-withholding disposition financial

"transaction_action: "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

Exercise or conversion of derivative security financial

"transaction_code_description: "Exercise or conversion of derivative security""

FAQ

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

What insider transactions did ACIC CEO Brad Martz report on this Form 4?

Brad Martz reported exercising performance stock units, restricted stock units, and dividend equivalent units into common stock. He received 25,903 common shares and had 10,365 shares withheld to cover taxes, all as part of routine equity compensation vesting.

How many ACIC common shares does CEO Brad Martz hold after these transactions?

After the April 3 2026 equity award vesting and tax withholding, Brad Martz directly holds 381,481 shares of American Coastal Insurance Corp common stock. This figure reflects his position following the award conversions and the share withholding for tax obligations.

Were Brad Martz’s ACIC transactions open-market purchases or sales?

The transactions were not open-market trades. They involved exercising derivative awards, such as performance stock units and restricted stock units, into common shares, plus a tax-withholding disposition where 10,365 shares were delivered to satisfy tax liabilities tied to the vesting.

What does the tax-withholding disposition on ACIC shares represent?

The tax-withholding disposition reflects 10,365 ACIC common shares withheld at $10.97 per share to pay taxes on vested awards. This is a mechanical settlement of tax obligations, not a discretionary sale in the open market, and is standard for equity compensation.

What equity awards for ACIC’s CEO vested or converted in this Form 4?

Performance stock units, restricted stock units, and associated dividend equivalent units for ACIC’s CEO vested or converted into common stock on April 3 2026. Each unit generally represents a conditional right to receive one ACIC common share once vesting conditions are met.

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

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Accepted by SEC EDGAR 04/07/2026 - 04:04 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^*

MARTZ BRAD

(Last) (First) (Middle)

570 CARILLON PARKWAY, SUITE 100

(Street)

ST. PETERSBURG FLORIDA 33716

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
AMERICAN COASTAL INSURANCE Corp [ ACIC ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President & CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/03/2026

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
Common Stock	04/03/2026		M		25,903	A	$0.00	391,846	D
Common Stock	04/03/2026		F		10,365	D	$10.97	381,481	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
Performance Stock Units	(1)	04/03/2026		M			11,654	(2)	(3)	Common Stock	11,654	$0.00	82,197	D
Restricted Stock Units	(1)	04/03/2026		M			5,826	(4)	(4)	Common Stock	5,826	$0.00	41,101	D
Dividend Equivalent Units	(1)	04/03/2026		M			403	(5)	(5)	Common Stock	403	$11.31	2,778	D
Dividend Equivalent Units	(1)	04/03/2026		M			246	(5)	(5)	Common Stock	246	$11.85	781	D
Dividend Equivalent Units	(1)	04/03/2026		M			806	(6)	(6)	Common Stock	806	$11.31	5,554	D
Dividend Equivalent Units	(1)	04/03/2026		M			492	(6)	(6)	Common Stock	492	$11.85	1,563	D

Explanation of Responses:

1. Each stock unit represents a conditional right to receive one share of the company's common stock.

2. The performance units are subject to vesting over three years with one third, rounded down to the nearest whole share of stock, vesting in each period.

3. The number of shares of common stock that will be delivered for each performance stock unit depends on the achievement of certain performance factors. Depending on actual performance, the number of shares of common stock delivered upon the vesting date (based on the terms outlined in the respective award agreement) can range from 0% to 150% of the number presented above.

4. The restricted stock units are subject to vesting over three years with one third, rounded down to the nearest whole share of stock, vesting in each period.

5. The dividend equivalent units will vest proportionately with the underlying restricted stock units to which they relate.

6. The dividend equivalent units will vest proportionately with the underlying performance stock units to which they relate.

	/s/ Alexander Baty, Attorney-in-Fact for Brad Martz	04/07/2026
	** 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)