COMMVAULT SYSTEMS INC — Director's Dealing 2011

Sep 28, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COMMVAULT SYSTEMS INC (CVLT)
CIK: 0001169561
Period of Report: 2010-01-15

Reporting Person: Rose Steven (Vice President, EMEA)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-09-26	Common Stock	S	751	$38.50	Disposed	14618	Direct
2011-09-26	Common Stock	M	1875	$23.54	Acquired	16493	Direct
2011-09-26	Common Stock	M	9205	$11.12	Acquired	25698	Direct
2011-09-26	Common Stock	S	1875	$38.50	Disposed	23823	Direct
2011-09-26	Common Stock	S	9205	$38.50	Disposed	14618	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-01-15	Options to Purchase Common Stock	$23.54	A	5000	Acquired	2020-01-15	Common Stock (5000)	Direct
2011-09-26	Options to Purchase Common Stock	$23.54	M	1875	Disposed	2020-01-15	Common Stock (1875)	Direct
2011-09-26	Options to Purchase Common Stock	$11.12	M	9205	Disposed	2018-12-12	Common Stock (9205)	Direct

Footnotes

F1: 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.

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.

F3: Not applicable.