144 0001410604 XXXXXXXX LIVE 0001046025 HERITAGE FINANCIAL CORPORATION 000-29480 201 Fifth Avenue SW Olympia WA 98501 (360) 943-1500 DONALD HINSON Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

3842 109012.52 41218817 06/09/2026 NASDAQ Common 03/15/2022 Performance Shares Issuer N 497 03/15/2022 Not Applicable Common 03/15/2021 Performance Shares Issuer N 183 03/15/2021 Not Applicable Common 03/15/2021 Performance Shares Issuer N 183 03/15/2021 Not Applicable Common 03/15/2025 Performance Shares Issuer N 308 03/15/2025 Not Applicable Common 03/15/2021 Restricted Stock Issuer N 400 03/15/2021 Not Applicable Common 03/15/2021 Restricted Stock Issuer N 532 03/15/2021 Not Applicable Common 03/15/2021 Restricted Stock Issuer N 383 03/15/2021 Not Applicable Common 03/10/2019 Restricted Stock Issuer N 562 03/10/2019 Not Applicable Common 03/10/2019 Restricted Stock Issuer N 794 03/10/2019 Not Applicable Y 06/09/2026 /s/ Donald J. Hinson