<SEC-DOCUMENT>0001085146-22-000068-index.html : 20220110
<SEC-HEADER>0001085146-22-000068.hdr.sgml : 20220110
<ACCEPTANCE-DATETIME>20220110145820
ACCESSION NUMBER:		0001085146-22-000068
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20220110
DATE AS OF CHANGE:		20220110

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:			0701

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-52823
		FILM NUMBER:		22521026

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Conestoga Capital Advisors, LLC
		CENTRAL INDEX KEY:			0001163744
		IRS NUMBER:				233072906
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		550 E. SWEDESFORD ROAD
		STREET 2:		SUITE 120
		CITY:			WAYNE
		STATE:			PA
		ZIP:			19087
		BUSINESS PHONE:		484-654-1380

	MAIL ADDRESS:	
		STREET 1:		550 E. SWEDESFORD ROAD
		STREET 2:		SUITE 120
		CITY:			WAYNE
		STATE:			PA
		ZIP:			19087

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CONESTOGA CAPITAL ADVISORS LLC
		DATE OF NAME CHANGE:	20011217
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>mrcy_11022.htm
<DESCRIPTION>CONESTOGA CAPITAL ADVISORS
<TEXT>
Document 1 - file: mrcy_11022.htm

</DOCUMENT>
</SEC-DOCUMENT>