QUANTUM CORP /DE/ — Director's Dealing 2010

Jul 1, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: QUANTUM CORP /DE/ (QTM)
CIK: 0000709283
Period of Report: 2010-07-01

Reporting Person: LOPATIN GERALD (Executive VP, Engineering)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-07-01	Common Stock	F	24760	$1.86	Disposed	129567	Direct

Footnotes

F1: Surrender of shares to satisfy tax withholding obligations upon vesting of RSUs granted on 07/01/2008 and on 07/01/2009.