<SEC-DOCUMENT>0001628280-25-028604-index.html : 20250530
<SEC-HEADER>0001628280-25-028604.hdr.sgml : 20250530
<ACCEPTANCE-DATETIME>20250530162335
ACCESSION NUMBER:		0001628280-25-028604
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		4
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20241231
</ITEM>
<ITEM>
<ITEM-NUMBER>1.02
<ITEM-PERIOD>20241231
</ITEM>
</RULE>
FILED AS OF DATE:		20250530
DATE AS OF CHANGE:		20250530

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ESS Tech, Inc.
		CENTRAL INDEX KEY:			0001819438
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				981550150
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39525
		FILM NUMBER:		251011332

	BUSINESS ADDRESS:	
		STREET 1:		26440 SW PARKWAY AVE.
		STREET 2:		BLDG. 83
		CITY:			WILSONVILLE
		STATE:			OR
		ZIP:			97070
		BUSINESS PHONE:		(855) 423-9920

	MAIL ADDRESS:	
		STREET 1:		26440 SW PARKWAY AVE.
		STREET 2:		BLDG. 83
		CITY:			WILSONVILLE
		STATE:			OR
		ZIP:			97070

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ACON S2 Acquisition Corp.
		DATE OF NAME CHANGE:	20200728
</SEC-HEADER>
<DOCUMENT>
<TYPE>SD
<SEQUENCE>1
<FILENAME>ess2025formsd.htm
<DESCRIPTION>SD
<TEXT>
Document 1 - file: ess2025formsd.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.01
<SEQUENCE>2
<FILENAME>ess2025conflictmineralsrep.htm
<DESCRIPTION>EX-1.01
<TEXT>
Document 2 - file: ess2025conflictmineralsrep.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>image_0.jpg
<TEXT>
Document 3 - file: image_0.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>image_1.jpg
<TEXT>
Document 4 - file: image_1.jpg

</DOCUMENT>
</SEC-DOCUMENT>