<SEC-DOCUMENT>0001537435-24-000008-index.html : 20240123
<SEC-HEADER>0001537435-24-000008.hdr.sgml : 20240123
<ACCEPTANCE-DATETIME>20240123174527
ACCESSION NUMBER:		0001537435-24-000008
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20240122
FILED AS OF DATE:		20240123
DATE AS OF CHANGE:		20240123

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HATSOPOULOS JOHN
		CENTRAL INDEX KEY:			0001274775
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36103
		FILM NUMBER:		24553694

	MAIL ADDRESS:	
		STREET 1:		85 FIRST AVENUE
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TECOGEN INC.
		CENTRAL INDEX KEY:			0001537435
		STANDARD INDUSTRIAL CLASSIFICATION:	AIR COND & WARM AIR HEATING EQUIP & COMM & INDL REFRIG EQUIP [3585]
		ORGANIZATION NAME:           	06 Technology
		IRS NUMBER:				043536131
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		45 FIRST AVENUE
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451
		BUSINESS PHONE:		781-466-6400

	MAIL ADDRESS:	
		STREET 1:		45 FIRST AVENUE
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TECOGEN INC
		DATE OF NAME CHANGE:	20111215
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
<FILENAME>wk-form4_1706049917.xml
<DESCRIPTION>FORM 4
<TEXT>
Document 1 - file: wk-form4_1706049917.html

Document 1 - RAW XML: wk-form4_1706049917.xml

</DOCUMENT>
</SEC-DOCUMENT>