SEC FORM 4

SEC FORM 4SEC 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

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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^*

Castle Svetlana

(Last)

(First)

(Middle)

570 CARILLON PARKWAY, SUITE 100

(Street)

SAINT 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)
	Chief Financial Officer

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	04/03/2026		M		9,829	A	$0.00	15,030	D
Common Stock	04/03/2026		F		3,934	D	$10.97	11,096	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Performance Stock Units	⁽¹⁾	04/03/2026		M			4,421	⁽²⁾	⁽³⁾	Common Stock	4,421	$0.00	16,833	D
Restricted Stock Units	⁽¹⁾	04/03/2026		M			2,210	⁽⁴⁾	⁽⁴⁾	Common Stock	2,210	$0.00	8,418	D
Dividend Equivalent Units	⁽¹⁾	04/03/2026		M			153	⁽⁵⁾	⁽⁵⁾	Common Stock	153	$11.31	564	D
Dividend Equivalent Units	⁽¹⁾	04/03/2026		M			94	⁽⁵⁾	⁽⁵⁾	Common Stock	94	$11.85	92	D
Dividend Equivalent Units	⁽¹⁾	04/03/2026		M			306	⁽⁶⁾	⁽⁶⁾	Common Stock	306	$11.31	1,128	D
Dividend Equivalent Units	⁽¹⁾	04/03/2026		M			187	⁽⁶⁾	⁽⁶⁾	Common Stock	187	$11.85	185	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 Svetlana Castle	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)

SEC Form 4 filed by Castle Svetlana