<SEC-DOCUMENT>0001193125-21-288128-index.html : 20210930
<SEC-HEADER>0001193125-21-288128.hdr.sgml : 20210930
<ACCEPTANCE-DATETIME>20210930172541
ACCESSION NUMBER:		0001193125-21-288128
CONFORMED SUBMISSION TYPE:	PREM14A
PUBLIC DOCUMENT COUNT:		7
CONFORMED PERIOD OF REPORT:	20211123
FILED AS OF DATE:		20210930
DATE AS OF CHANGE:		20210930

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MoSys, Inc.
		CENTRAL INDEX KEY:			0000890394
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				770291941
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		PREM14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-32929
		FILM NUMBER:		211295940

	BUSINESS ADDRESS:	
		STREET 1:		2309 BERING DRIVE
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95131
		BUSINESS PHONE:		408 418 7500

	MAIL ADDRESS:	
		STREET 1:		2309 BERING DRIVE
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95131

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MONOLITHIC SYSTEM TECHNOLOGY INC
		DATE OF NAME CHANGE:	19960613
</SEC-HEADER>
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<TYPE>PREM14A
<SEQUENCE>1
<FILENAME>d228931dprem14a.htm
<DESCRIPTION>PREM14A
<TEXT>
Document 1 - file: d228931dprem14a.htm

</DOCUMENT>
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<SEQUENCE>2
<FILENAME>g228931g46a01.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g228931g46a01.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g228931g46a02.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g228931g46a02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g228931g47a01.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g228931g47a01.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g228931g47a02.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g228931g47a02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g228931g47a03.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g228931g47a03.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g228931g47a04.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g228931g47a04.jpg

</DOCUMENT>
</SEC-DOCUMENT>