<SEC-DOCUMENT>0001564590-18-030523-index.html : 20181206
<SEC-HEADER>0001564590-18-030523.hdr.sgml : 20181206
<ACCEPTANCE-DATETIME>20181206060307
ACCESSION NUMBER:		0001564590-18-030523
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20181227
FILED AS OF DATE:		20181206
DATE AS OF CHANGE:		20181206
EFFECTIVENESS DATE:		20181206

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:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-32929
		FILM NUMBER:		181218618

	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>DEF 14A
<SEQUENCE>1
<FILENAME>mosy-def14a_20181227.htm
<DESCRIPTION>DEF 14A
<TEXT>
Document 1 - file: mosy-def14a_20181227.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>gczylxdu0rlb000003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: gczylxdu0rlb000003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>gczylxdu0rlb000002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: gczylxdu0rlb000002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>gczylxdu0rlb000001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: gczylxdu0rlb000001.jpg

</DOCUMENT>
</SEC-DOCUMENT>