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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1169561	Commvault Systems Inc	CVLT	Services-Prepackaged Software (7372)	000000000

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1374598	R David West	2 Crescent Place Oceanport NJ 07757	Vp, Mkt & Bus. Development	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2011-07-01	6,200	$5.00	35,559	No	4	M	Direct
Common Stock	Disposition	2011-07-01	6,200	$45.00	29,359	No	4	S	Direct
Common Stock	Acquisiton	2011-07-05	6,300	$5.00	35,659	No	4	M	Direct
Common Stock	Disposition	2011-07-05	6,300	$45.00	29,359	No	4	S	Direct
Common Stock	Disposition	2011-07-05	319	$44.27	29,040	No	4	F	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct
No	4	F	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Options to Purchase Common Stock	Disposition	2011-07-01	6,200	$5.00	6,200	$5.00
Common Stock	Options to Purchase Common Stock	Disposition	2011-07-05	6,300	$5.00	6,300	$5.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
6,300		2013-11-07	No	4	M	Direct
0		2013-11-07	No	4	M	Direct

Footnotes

This transaction has taken place pursuant to a pre-arranged trading plan in compliance with Rule 10b5-1 of the Securities and Exchange Act of 1934.
This sale of common stock was made to satisfy certain tax withholding obligations resulting from the vesting of restricted stock units.
Represents average sale price.
The options vested over 4 years from the date of grant, as follows: 25% on the first anniversary of the grant, quarterly thereafter for the remaining three years.