-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 U6vDamvKcoou/7l7i5Jk5HkWWcINnEf7CBVfRVQXdY6RkpwIpc2qJsvAZQskkaNI
 88hJ4pIgJDkSHlg8PNf1Pw==

<SEC-DOCUMENT>0001209191-06-051167.txt : 20060921
<SEC-HEADER>0001209191-06-051167.hdr.sgml : 20060921
<ACCEPTANCE-DATETIME>20060921172626
ACCESSION NUMBER:		0001209191-06-051167
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060921
FILED AS OF DATE:		20060921
DATE AS OF CHANGE:		20060921

ISSUER:		

	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

	BUSINESS ADDRESS:	
		STREET 1:		2 CRESCENT PLACE
		CITY:			OCEANPORT
		STATE:			NJ
		ZIP:			07757-0900
		BUSINESS PHONE:		7328704000

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SMITH GARY B
		CENTRAL INDEX KEY:			0001032553

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33026
		FILM NUMBER:		061102797

	BUSINESS ADDRESS:	
		STREET 1:		1201 WINTERSON ROAD
		CITY:			LINTHICUM
		STATE:			MD
		ZIP:			21090
		BUSINESS PHONE:		4108658500

	MAIL ADDRESS:	
		STREET 1:		C/O CIENA CORPORATION
		STREET 2:		1201 WINTERSON ROAD
		CITY:			LINTHICUM
		STATE:			MD
		ZIP:			21090
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>y25266_gbs.xml
<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
</DOCUMENT>
</SUBMISSION>