<SEC-DOCUMENT>0001049521-21-000056-index.html : 20211109
<SEC-HEADER>0001049521-21-000056.hdr.sgml : 20211109
<ACCEPTANCE-DATETIME>20211109162622
ACCESSION NUMBER:		0001049521-21-000056
CONFORMED SUBMISSION TYPE:	S-8
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20211109
DATE AS OF CHANGE:		20211109
EFFECTIVENESS DATE:		20211109

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MERCURY SYSTEMS INC
		CENTRAL INDEX KEY:			0001049521
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRONIC COMPONENTS & ACCESSORIES [3670]
		IRS NUMBER:				042741391
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			0703

	FILING VALUES:
		FORM TYPE:		S-8
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-260915
		FILM NUMBER:		211392616

	BUSINESS ADDRESS:	
		STREET 1:		50 MINUTEMAN ROAD
		CITY:			ANDOVER
		STATE:			MA
		ZIP:			01810
		BUSINESS PHONE:		9782561300

	MAIL ADDRESS:	
		STREET 1:		50 MINUTEMAN ROAD
		CITY:			ANDOVER
		STATE:			MA
		ZIP:			01810

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MERCURY COMPUTER SYSTEMS INC
		DATE OF NAME CHANGE:	19971112
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-8
<SEQUENCE>1
<FILENAME>s-82018sipadditionalshares.htm
<DESCRIPTION>S-8
<TEXT>
Document 1 - file: s-82018sipadditionalshares.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>exhibit51opinion.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 2 - file: exhibit51opinion.htm

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

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>exhibit51opinion001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: exhibit51opinion001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>kpmgconsent001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: kpmgconsent001.jpg

</DOCUMENT>
</SEC-DOCUMENT>