QUANTUM CORP /DE/ — Director's Dealing 2012

Jul 3, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: QUANTUM CORP /DE/ (QTM)
CIK: 0000709283
Period of Report: 2012-07-01

Reporting Person: BRITTS WILLIAM C (SVP, Operations & Global Serv.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-07-01	Common Stock	F	21161	$2.03	Disposed	458882	Direct
2012-07-01	Common Stock	A	150000	—	Acquired	608882	Direct

Footnotes

F1: Surrender of shares to satisfy tax withholding obligations upon vesting of restricted stock units granted on 7/1/2010 and on 7/1/2011.

F2: Restricted stock units will vest in equal installments on 07/01/2013, 07/01/2014 and on 07/01/2015.