COMMVAULT SYSTEMS INC — Director's Dealing 2011

Jul 7, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COMMVAULT SYSTEMS INC (CVLT)
CIK: 0001169561
Period of Report: 2011-07-05

Reporting Person: MICELI LOUIS (Vice President and CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-07-05	Common Stock	F	411	$44.27	Disposed	75082	Direct
2011-07-06	Common Stock	M	15000	$16.99	Acquired	90082	Direct
2011-07-06	Common Stock	S	15000	$47.00	Disposed	75082	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-07-06	Options to Purchase Common Stock	$16.99	M	15000	Disposed	2017-05-22	Common Stock (15000)	Direct

Footnotes

F1: This sale of common stock was made to satisfy certain tax withholding obligations resulting from the vesting of restricted stock units.

F2: Represents average sale price.

F3: 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.

F4: 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.