<SEC-DOCUMENT>0001564590-21-057448-index.html : 20211117
<SEC-HEADER>0001564590-21-057448.hdr.sgml : 20211117
<ACCEPTANCE-DATETIME>20211117163906
ACCESSION NUMBER:		0001564590-21-057448
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20211117
DATE AS OF CHANGE:		20211117

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:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-32929
		FILM NUMBER:		211421062

	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>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>mosy-defa14a_20211117.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: mosy-defa14a_20211117.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>gmwxwpejhjui000003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: gmwxwpejhjui000003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>gmwxwpejhjui000002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: gmwxwpejhjui000002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>gmwxwpejhjui000001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: gmwxwpejhjui000001.jpg

</DOCUMENT>
</SEC-DOCUMENT>