COMMVAULT SYSTEMS INC — Director's Dealing 2010

Mar 15, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COMMVAULT SYSTEMS INC (CVLT)
CIK: 0001169561
Period of Report: 2010-03-11

Reporting Person: Rose Steven (Vice President, EMEA)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-03-11	Common Stock	M	24500	$11.70	Acquired	50066	Direct
2010-03-11	Common Stock	S	24500	$22.45	Disposed	25566	Direct
2010-03-12	Common Stock	M	25500	$11.70	Acquired	51066	Direct
2010-03-12	Common Stock	S	25500	$22.45	Disposed	25566	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-03-11	Options to Purchase Common Stock	$11.70	M	24500	Disposed	2016-04-20	Common Stock (24500)	Direct
2010-03-12	Options to Purchase Common Stock	$11.70	M	25500	Disposed	2016-04-20	Common Stock (25500)	Direct

Footnotes

F1: All transactions shown on this form have taken place pursuant to a pre-arranged trading plan in compliance with Rule 10b5-1 of the Securities and Exchange Act of 1934.

F2: The options to purchase common stock are subject to a 4-year vesting schedule, as follows: 25% on the first anniversary of the grant with the remaining options vesting in equal quarterly installments thereafter.