CASTLE SVETLANA (Chief Financial Officer) exercised options at AMERICAN COASTAL INSURANCE CORP

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 1 exercise

CASTLE SVETLANA

Filed: 4/7/2026ACC: 0002009629-26-000004

InsiderCASTLE SVETLANACIK 2009629

→

IssuerAMERICAN COASTAL INSURANCE CORPCIK 1401521

Officer· Chief Financial Officer

Since Jan 2024

-1.48K

Net shares

Net seller

$43.2K

Total sold

Open market trades

0B · 0S

Total transactions

9.83K acquired · 11.30K disposed

Non-Derivative Transactions2

Common Stock

Direct

M · Option Exercise

+9.83K

Price / share

—

Trade value

—

% of position

189.0%

4/3/2026

5.20K→15.03K

Common Stock

Direct

F · Tax Withholding

−3.93K

Price / share

$10.97

Trade value

$43.16K

% of position

26.2%

4/3/2026

15.03K→11.10K

Total

Net shares

+5.89K

Net value

-$43.16K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	4/3/2026	M · Option Exercise	+9.83K	—	—	189.0%	5.20K	15.03K
Common Stock Direct	4/3/2026	F · Tax Withholding	−3.93K	$10.97	$43.16K	26.2%	15.03K	11.10K
Total			+5.89K		-$43.16K

Derivative Transactions6

Performance Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

4.42K shares

−4.42K

Strike price

Held after

16.83K

Exercisable

—

4/3/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

2.21K shares

−2.21K

Strike price

Held after

8.42K

Exercisable

—

4/3/2026

Dividend Equivalent Units

Direct

M · Option Exercise

Converts to

Common Stock

153.00 shares

−153.00

Strike price

Held after

564.00

Exercisable

—

4/3/2026

Dividend Equivalent Units

Direct

M · Option Exercise

Converts to

Common Stock

94.00 shares

−94.00

Strike price

Held after

92.00

Exercisable

—

4/3/2026

Dividend Equivalent Units

Direct

M · Option Exercise

Converts to

Common Stock

306.00 shares

−306.00

Strike price

Held after

1.13K

Exercisable

—

4/3/2026

Dividend Equivalent Units

Direct

M · Option Exercise

Converts to

Common Stock

187.00 shares

−187.00

Strike price

Held after

185.00

Exercisable

—

4/3/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Performance Stock Units Direct	Common Stock4.42K shares	4/3/2026	M · Option Exercise	−4.42K	—	16.83K
Restricted Stock Units Direct	Common Stock2.21K shares	4/3/2026	M · Option Exercise	−2.21K	—	8.42K
Dividend Equivalent Units Direct	Common Stock153.00 shares	4/3/2026	M · Option Exercise	−153.00	—	564.00
Dividend Equivalent Units Direct	Common Stock94.00 shares	4/3/2026	M · Option Exercise	−94.00	—	92.00
Dividend Equivalent Units Direct	Common Stock306.00 shares	4/3/2026	M · Option Exercise	−306.00	—	1.13K
Dividend Equivalent Units Direct	Common Stock187.00 shares	4/3/2026	M · Option Exercise	−187.00	—	185.00