<SEC-DOCUMENT>0000906304-17-000134-index.html : 20170201
<SEC-HEADER>0000906304-17-000134.hdr.sgml : 20170201
<ACCEPTANCE-DATETIME>20170201130213
ACCESSION NUMBER:		0000906304-17-000134
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20170201
DATE AS OF CHANGE:		20170201

SUBJECT COMPANY:	

	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:			0630

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-52823
		FILM NUMBER:		17564030

	BUSINESS ADDRESS:	
		STREET 1:		201 RIVERNECK ROAD
		CITY:			CHELMSFORD
		STATE:			MA
		ZIP:			01824
		BUSINESS PHONE:		9782561300

	MAIL ADDRESS:	
		STREET 1:		201 RIVERNECK ROAD
		CITY:			CHELMSFORD
		STATE:			MA
		ZIP:			01824

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MERCURY COMPUTER SYSTEMS INC
		DATE OF NAME CHANGE:	19971112

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ROYCE & ASSOCIATES LP
		CENTRAL INDEX KEY:			0000906304
		IRS NUMBER:				522343049
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		745 FIFTH AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10151
		BUSINESS PHONE:		212-508-4500

	MAIL ADDRESS:	
		STREET 1:		745 FIFTH AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10151

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ROYCE & ASSOCIATES LLC
		DATE OF NAME CHANGE:	20020507

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ROYCE & ASSOCIATES INC /NY
		DATE OF NAME CHANGE:	19990329

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	QUEST ADVISORY CORP/NY
		DATE OF NAME CHANGE:	19970805
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>mrcy11.txt
<TEXT>
Document 1 - file: mrcy11.txt

</DOCUMENT>
</SEC-DOCUMENT>