COMMVAULT SYSTEMS INC — Director's Dealing 2010

Dec 10, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COMMVAULT SYSTEMS INC (CVLT)
CIK: 0001169561
Period of Report: 2010-11-10

Reporting Person: KURIMSKY ROBERT F (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-12-08	Common Stock	M	13000	$8.00	Acquired	17667	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-12-08	Options to Purchase Common Stock	$8.00	M	13000	Disposed	2011-02-01	Common Stock (13000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	65000	Indirect

Footnotes

F1: These shares were previously reported as directly beneficially owned but were contributed to a grantor retained annuity trust on 11/10/10.

F2: 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.

F3: Not applicable.