QUANTUM CORP /DE/ — Director's Dealing 2011

Jul 5, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: QUANTUM CORP /DE/ (QTM)
CIK: 0000709283
Period of Report: 2011-07-01

Reporting Person: Breard Linda M. (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-07-01	Common Stock	A	300000	—	Acquired	493254	Direct
2011-07-01	Common Stock	F	8817	$3.37	Disposed	484437	Direct

Footnotes

F1: Surrender of shares to satisfy tax withholding obligations upon vesting of restricted stock units granted on 7/1/2010.

F2: RSUs will vest in equal installments on 07/01/2012, 07/01/2013 and on 07/01/2014.