<SEC-DOCUMENT>0000921895-20-003013-index.html : 20201116
<SEC-HEADER>0000921895-20-003013.hdr.sgml : 20201116
<ACCEPTANCE-DATETIME>20201116162038
ACCESSION NUMBER:		0000921895-20-003013
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20201116
DATE AS OF CHANGE:		20201116

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COMMVAULT SYSTEMS INC
		CENTRAL INDEX KEY:			0001169561
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-82187
		FILM NUMBER:		201317258

	BUSINESS ADDRESS:	
		STREET 1:		1 COMMVAULT WAY
		CITY:			TINTON FALLS
		STATE:			NJ
		ZIP:			07724
		BUSINESS PHONE:		732-870-4000

	MAIL ADDRESS:	
		STREET 1:		1 COMMVAULT WAY
		CITY:			TINTON FALLS
		STATE:			NJ
		ZIP:			07724

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Starboard Value LP
		CENTRAL INDEX KEY:			0001517137
		IRS NUMBER:				000000000

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	BUSINESS ADDRESS:	
		STREET 1:		777 THIRD AVENUE, 18TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
		BUSINESS PHONE:		(212) 845-7977

	MAIL ADDRESS:	
		STREET 1:		777 THIRD AVENUE, 18TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>sc13da306297167_11162020.htm
<DESCRIPTION>AMENDMENT NO. 3 TO THE SCHEDULE 13D
<TEXT>
Document 1 - file: sc13da306297167_11162020.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>ex991to13da306297167_111620.htm
<DESCRIPTION>JOINT FILING AGREEMENT
<TEXT>
Document 2 - file: ex991to13da306297167_111620.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>3
<FILENAME>ex992to13da306297167_111620.htm
<DESCRIPTION>POWER OF ATTORNEY
<TEXT>
Document 3 - file: ex992to13da306297167_111620.htm

</DOCUMENT>
</SEC-DOCUMENT>