<SEC-DOCUMENT>0001753926-21-000389-index.html : 20210820
<SEC-HEADER>0001753926-21-000389.hdr.sgml : 20210820
<ACCEPTANCE-DATETIME>20210819213435
ACCESSION NUMBER:		0001753926-21-000389
CONFORMED SUBMISSION TYPE:	424B4
PUBLIC DOCUMENT COUNT:		7
FILED AS OF DATE:		20210820
DATE AS OF CHANGE:		20210819

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MECHANICAL TECHNOLOGY INC
		CENTRAL INDEX KEY:			0000064463
		STANDARD INDUSTRIAL CLASSIFICATION:	MEASURING & CONTROLLING DEVICES, NEC [3829]
		IRS NUMBER:				141462255
		STATE OF INCORPORATION:			NV
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		424B4
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-257300
		FILM NUMBER:		211191599

	BUSINESS ADDRESS:	
		STREET 1:		325 WASHINGTON AVENUE EXTENSION
		CITY:			ALBANY
		STATE:			NY
		ZIP:			12205
		BUSINESS PHONE:		518-218-2500

	MAIL ADDRESS:	
		STREET 1:		325 WASHINGTON AVENUE EXTENSION
		CITY:			ALBANY
		STATE:			NY
		ZIP:			12205
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B4
<SEQUENCE>1
<FILENAME>g082317_424b4.htm
<DESCRIPTION>424B4
<TEXT>
Document 1 - file: g082317_424b4.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>img001_v1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: img001_v1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>img002_v1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: img002_v1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>img003_v1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: img003_v1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>img004_v1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: img004_v1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>img005_v1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: img005_v1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>img006_v1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: img006_v1.jpg

</DOCUMENT>
</SEC-DOCUMENT>