<SEC-DOCUMENT>0001628280-26-048342-index.html : 20260715
<SEC-HEADER>0001628280-26-048342.hdr.sgml : 20260715
<ACCEPTANCE-DATETIME>20260715165459
ACCESSION NUMBER:		0001628280-26-048342
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20260709
FILED AS OF DATE:		20260715
DATE AS OF CHANGE:		20260715

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Song Haiyan
		CENTRAL INDEX KEY:			0001804708
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39291
		FILM NUMBER:		261177910

	MAIL ADDRESS:	
		STREET 1:		TWO ALLEGHENY CENTER
		STREET 2:		NOVA TOWER 2
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15212

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Eos Energy Enterprises, Inc.
		CENTRAL INDEX KEY:			0001805077
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		TWO ALLEGHENY CENTER
		STREET 2:		NOVA TOWER 2
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15212
		BUSINESS PHONE:		(732) 225-8400

	MAIL ADDRESS:	
		STREET 1:		TWO ALLEGHENY CENTER
		STREET 2:		NOVA TOWER 2
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15212

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	B. Riley Principal Merger Corp. II
		DATE OF NAME CHANGE:	20200227
</SEC-HEADER>
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<TYPE>3
<SEQUENCE>1
<FILENAME>wk-form3_1784148896.xml
<DESCRIPTION>FORM 3
<TEXT>
Document 1 - file: wk-form3_1784148896.html

Document 1 - RAW XML: wk-form3_1784148896.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>haiyansongpoa07-09x26.htm
<DESCRIPTION>EX-24
<TEXT>
Document 2 - file: haiyansongpoa07-09x26.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>haiyansongpoa07-09x26001.jpg
<TEXT>
Document 3 - file: haiyansongpoa07-09x26001.jpg

</DOCUMENT>
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