QUANTUM CORP /DE/ — Director's Dealing 2011

Aug 9, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: QUANTUM CORP /DE/ (QTM)
CIK: 0000709283
Period of Report: 2011-08-09

Reporting Person: GACEK JON W (Chief Executive Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-08-09	Common Stock	P	50000	$1.6998	Acquired	990446	Direct

Footnotes

F1: 1. The purchase price reported in column 4 of Table I represents the weighted average purchase price of the shares purchased ranging from $1.6997
to $1.70 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 purchased at each separate price.