144 0001410554 XXXXXXXX LIVE 0001541119 Sound Financial Bancorp, Inc. 001-35633 2400 3RD AVENUE SUITE 150 SEATTLE WA 98121 206-448-0884 Haddad David S Jr Director Common Charles Schwab & Co.

3000 SCHWAB WAY WESTLAKE TX 76262

1000 36000.00 2601647 05/11/2023 Nasdaq Common 05/31/2021 Stock Awards Issuer N 355 05/31/2021 Compensation Common 02/07/2020 Stock Awards Issuer N 831 02/07/2020 Compensation Y 05/11/2023 David S. Haddad Jr.