<SEC-DOCUMENT>0001558370-17-007548-index.html : 20171026
<SEC-HEADER>0001558370-17-007548.hdr.sgml : 20171026
<ACCEPTANCE-DATETIME>20171025192420
ACCESSION NUMBER:		0001558370-17-007548
CONFORMED SUBMISSION TYPE:	S-3/A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20171026
DATE AS OF CHANGE:		20171025

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:		S-3/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-221011
		FILM NUMBER:		171154187

	BUSINESS ADDRESS:	
		STREET 1:		3301 OLCOTT STREET
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			95054
		BUSINESS PHONE:		408 418 7500

	MAIL ADDRESS:	
		STREET 1:		3301 OLCOTT STREET
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			95054

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MONOLITHIC SYSTEM TECHNOLOGY INC
		DATE OF NAME CHANGE:	19960613
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3/A
<SEQUENCE>1
<FILENAME>s-3a.htm
<DESCRIPTION>S-3/A
<TEXT>
Document 1 - file: s-3a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>ex-5d1.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 2 - file: ex-5d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>ex-23d1.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 3 - file: ex-23d1.htm

</DOCUMENT>
</SEC-DOCUMENT>