    <SEC-DOCUMENT>0001046025-21-000071-index.html : 20210319
    <SEC-HEADER>0001046025-21-000071.hdr.sgml : 20210319
    <ACCEPTANCE-DATETIME>20210319112220
    ACCESSION NUMBER:		0001046025-21-000071
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20210319
    DATE AS OF CHANGE:		20210319

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			HERITAGE FINANCIAL CORP /WA/
    		CENTRAL INDEX KEY:			0001046025
    		STANDARD INDUSTRIAL CLASSIFICATION:	SAVINGS INSTITUTIONS, NOT FEDERALLY CHARTERED [6036]
    		IRS NUMBER:				911857900
    		STATE OF INCORPORATION:			WA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-29480
    		FILM NUMBER:		21757003

    	BUSINESS ADDRESS:
    		STREET 1:		201 FIFTH AVENUE S.W.
    		STREET 2:		P O BOX 1578
    		CITY:			OLYMPIA
    		STATE:			WA
    		ZIP:			98501
    		BUSINESS PHONE:		3609431500

    	MAIL ADDRESS:
    		STREET 1:		205 5TH AVE SW
    		STREET 2:		P O BOX 1578
    		CITY:			OLYMPIA
    		STATE:			WA
    		ZIP:			98501
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>a2021def14a-additionalmate.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: a2021def14a-additionalmate.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>a03ezfc_heritagexfinancial.jpg
    <TEXT>
    Document 2 - file: a03ezfc_heritagexfinancial.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>a03ezfc_heritagexfinanciala.jpg
    <TEXT>
    Document 3 - file: a03ezfc_heritagexfinanciala.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>