QUANTUM CORP /DE/ — Director's Dealing 2011

Jul 13, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: QUANTUM CORP /DE/ (QTM)
CIK: 0000709283
Period of Report: 2011-07-13

Reporting Person: BELLUZZO RICHARD (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-07-13	Common Stock	M	70899	$2.97	Acquired	882538	Direct
2011-07-13	Common Stock	S	70899	$3.30	Disposed	811639	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-07-13	Non-Qualified Stock Options	$2.97	M	70899	Disposed	2012-09-03	Common Stock (70899)	Direct

Footnotes

F1: Reflects the exercise of the stock options listed in Table II of this Form 4.

F2: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 1, 2011.

F3: The options are fully vested and immediately exercisable.