<SEC-DOCUMENT>0001753926-21-000342-index.html : 20210812
<SEC-HEADER>0001753926-21-000342.hdr.sgml : 20210812
<ACCEPTANCE-DATETIME>20210812163246
ACCESSION NUMBER:		0001753926-21-000342
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20210812
DATE AS OF CHANGE:		20210812

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:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40261
		FILM NUMBER:		211168131

	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>DEFA14A
<SEQUENCE>1
<FILENAME>g082297a_8k.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: g082297a_8k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-2.1
<SEQUENCE>2
<FILENAME>g082297_ex2-1.htm
<DESCRIPTION>EXHIBIT 2.1
<TEXT>
Document 2 - file: g082297_ex2-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.1
<SEQUENCE>3
<FILENAME>g082297_ex10-1.htm
<DESCRIPTION>EXHIBIT 10.1
<TEXT>
Document 3 - file: g082297_ex10-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>4
<FILENAME>g082297_ex99-1.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
Document 4 - file: g082297_ex99-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>img001_v2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: img001_v2.jpg

</DOCUMENT>
</SEC-DOCUMENT>