QUANTUM CORP /DE/ — Director's Dealing 2011

Jun 2, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: QUANTUM CORP /DE/ (QTM)
CIK: 0000709283
Period of Report: 2011-06-02

Reporting Person: FETTER ELIZABETH A (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-06-02	Common Stock	M	2500	$1.77	Acquired	90892	Direct
2011-06-02	Common Stock	M	5000	$1.16	Acquired	95892	Direct
2011-06-02	Common Stock	S	7500	$3.0590	Disposed	88392	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-06-02	Non-Qualified Stock Options	$1.77	M	2500	Disposed	2015-09-01	Common Stock (2500)	Direct
2011-06-02	Non-Qualified Stock Options	$1.16	M	5000	Disposed	2016-09-01	Common Stock (5000)	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.

F4: The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $3.05 to $3.08 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the reporting person will provide full information regarding the number of shares sold at each separate price.