<SEC-DOCUMENT>0001628280-23-018451-index.html : 20230516
<SEC-HEADER>0001628280-23-018451.hdr.sgml : 20230516
<ACCEPTANCE-DATETIME>20230516164432
ACCESSION NUMBER:		0001628280-23-018451
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20230516
FILED AS OF DATE:		20230516
DATE AS OF CHANGE:		20230516

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Hossfeld Rich
		CENTRAL INDEX KEY:			0001885330

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39525
		FILM NUMBER:		23928252

	MAIL ADDRESS:	
		STREET 1:		C/O ESS TECH INC
		STREET 2:		26440 SW PARKWAY AVE BLDG. 83
		CITY:			WILSONVILLE
		STATE:			OR
		ZIP:			97070

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ESS Tech, Inc.
		CENTRAL INDEX KEY:			0001819438
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	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>4
<SEQUENCE>1
<FILENAME>wk-form4_1684269855.xml
<DESCRIPTION>FORM 4
<TEXT>
Document 1 - file: wk-form4_1684269855.html

Document 1 - RAW XML: wk-form4_1684269855.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.POA
<SEQUENCE>2
<FILENAME>section16poarhossfeld.htm
<DESCRIPTION>EX-24.POA
<TEXT>
Document 2 - file: section16poarhossfeld.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>section16poarhossfeld001.jpg
<TEXT>
Document 3 - file: section16poarhossfeld001.jpg

</DOCUMENT>
</SEC-DOCUMENT>