QUANTUM CORP /DE/ — Director's Dealing 2011

Jan 19, 2011

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: QUANTUM CORP /DE/ (QTM)
CIK: 0000709283
Period of Report: 2011-01-10

Reporting Person: Breard Linda Marie (Chief Financial Officer)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	191561	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Non-Qualified Stock Option	$0.98	2016-07-01	Common Stock (187500)		Direct

Footnotes

F1: Includes 112,500 restricted stock units which will vest as follows: 12,500 will vest on 6/1/11, 33,334 will vest on 7/1/11 and 33,333 will vest on each of 7/1/12 and 7/1/13.

F2: Right to buy under Rule 16b (3) Plan.

F3: Stock options will vest as follows: 125,000 will vest on 7/1/11 and 62,500 will vest on 7/1/12.