STEWART LAURA LEE (President and CEO) sold 8.3% of their position (900.00 shares) of SOUND FINANCIAL BANCORP, INC. on the open market

Open‑market sale worth $39.7K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

STEWART LAURA LEE

Filed: 3/31/2026ACC: 0001437749-26-010758

InsiderSTEWART LAURA LEECIK 1410558

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IssuerSOUND FINANCIAL BANCORP, INC.CIK 1541119

DirectorOfficer· President and CEO

Since Jan 2019

-900.00

Net shares

Net seller

$39.7K

Total sold

Open market trades

0B · 1S

Total transactions

900.00 disposed

Non-Derivative Transactions1

Common Stock

Indirect

S · Sale

−900.00

Price / share

$44.13

Trade value

$39.72K

% of position

8.3%

3/31/2026

10.80K→9.90K

Total

Net shares

−900.00

Net value

-$39.72K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Indirect	3/31/2026	S · Sale	−900.00	$44.13	$39.72K	8.3%	10.80K	9.90K
Total			−900.00		-$39.72K

Derivative Transactions0

No derivative transactions reported

Non-Derivative Holdings (Post-Transaction)3

Common Stock

Indirect

Shares owned14.41K

Common Stock

Indirect

Shares owned18.91K

Common Stock

Direct

Shares owned49.60K

Total

49.60K direct·33.31K indirect82.92K

Security Title	Shares Owned	Ownership Type
Common Stock	14.41K	Indirect
Common Stock	18.91K	Indirect
Common Stock	49.60K	Direct
Total	82.92K	49.60K direct·33.31K indirect

Derivative Holdings (Post-Transaction)5

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

300.00

Shares owned

300.00

Exercise price

32.4600

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

250.00

Shares owned

250.00

Exercise price

33.5000

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

1.80K

Shares owned

1.80K

Exercise price

40.1300

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

259.00

Shares owned

259.00

Exercise price

39.8900

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

120.00

Shares owned

120.00

Exercise price

36.2600

Expiration

—

Exercise window

—

Total

Underlying

2.73K

Owned

2.73K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Stock Option (Right to Buy) Direct	Common Stock	32.4600	—	—	300.00	300.00
Stock Option (Right to Buy) Direct	Common Stock	33.5000	—	—	250.00	250.00
Stock Option (Right to Buy) Direct	Common Stock	40.1300	—	—	1.80K	1.80K
Stock Option (Right to Buy) Direct	Common Stock	39.8900	—	—	259.00	259.00
Stock Option (Right to Buy) Direct	Common Stock	36.2600	—	—	120.00	120.00
Total					2.73K	2.73K