QUANTUM CORP /DE/ — Director's Dealing 2011

Apr 5, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: QUANTUM CORP /DE/ (QTM)
CIK: 0000709283
Period of Report: 2011-04-01

Reporting Person: GACEK JON W (Chief Executive Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-04-01	Common Stock	A	300000	—	Acquired	969101	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-04-01	Non-Qualified Stock Options	$2.52	A	1300000	Acquired	2018-04-01	Common Stock (1300000)	Direct

Footnotes

F1: Restricted Stock Units will vest as follows: 100,000 will vest on each of April 1, 2012, April 1, 2013 and April 1, 2014.

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

F3: Stock options will vest over four years as follows: 25% will vest on April 1, 2012, and the remainder will vest monthly thereafter at the rate of 1/48th of the original grant amount over the following three years.