COMMVAULT SYSTEMS INC — Director's Dealing 2016

May 13, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COMMVAULT SYSTEMS INC (CVLT)
CIK: 0001169561
Period of Report: 2016-05-11

Reporting Person: CAROLAN BRIAN (VP Finance and CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-05-11	Common Stock	M	4000	$12.74	Acquired	81504	Direct
2016-05-11	Common Stock	S	4000	$43.80	Disposed	77504	Direct
2016-05-13	Common Stock	A	17216	—	Acquired	94720	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-05-11	Options to Purchase Common Stock	$12.74	M	4000	Disposed	2016-07-27	Common Stock (4000)	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 common stock is being granted as restricted stock units and is subject to a 3-year vesting schedule, as follows: 1/3 on the first anniversary of the grant with the remaining portion vesting in equal quarterly installments thereafter.

F3: Not applicable.

F4: 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.