COMMVAULT SYSTEMS INC — Director's Dealing 2013

May 23, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COMMVAULT SYSTEMS INC (CVLT)
CIK: 0001169561
Period of Report: 2013-05-21

Reporting Person: BUNTE AL (Director, Executive Vice President & COO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-05-21	Common Stock	M	7304	$4.70	Acquired	367798	Direct
2013-05-21	Common Stock	S	7304	$73.89	Disposed	360494	Direct
2013-05-21	Common Stock	S	3480	$73.89	Disposed	357014	Direct
2013-05-22	Common Stock	M	1196	$4.70	Acquired	358210	Direct
2013-05-22	Common Stock	S	1196	$73.08	Disposed	357014	Direct
2013-05-22	Common Stock	S	512	$73.08	Disposed	356502	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-05-21	Options to Purchase Common Stock	$4.70	M	7304	Disposed	2015-09-19	Common Stock (7304)	Direct
2013-05-22	Options to Purchase Common Stock	$4.70	M	1196	Disposed	2015-09-19	Common Stock (1196)	Direct

Footnotes

F1: Represents average sale price.

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.