SEC FORM 3

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Panayides, Andy

(Last)

(First)

(Middle)

C/O QUANTUM CORPORATION

1650 TECHNOLOGY DRIVE, SUITE 700

(Street)

SAN JOSE

95110

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
08/22/2006

3. Issuer Name and Ticker or Trading Symbol
QUANTUM CORP /DE/ [ DSS ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	VP,Corp Development & Strategy

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
DSS Common Stock	43,899	D
DSS Common Stock⁽³⁾	6,966	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Non-Qualified Stock Option	09/01/2000	09/01/2010	DSS Common Stock	30,000	$13.5625	D
Non-Qualified Stock Option	09/01/2000	09/01/2010	DSS Common Stock	13,656	$10.6416	D
Non-Qualified Stock Option	07/31/2001	07/31/2011	DSS Common Stock	42,427	$9.7	D
Non-Qualified Stock Option	07/31/2001	07/31/2011	DSS Common Stock	3,573	$9.7	D
Non-Qualified Stock Option	05/02/2002	05/02/2012	DSS Common Stock	21,300	$6.7	D
Non-Qualified Stock Option	05/02/2002	05/02/2012	DSS Common Stock	10,650	$6.7	D
Non-Qualified Stock Option	07/31/2002	07/31/2012	DSS Common Stock	40,000	$2.08	D
Non-Qualified Stock Option	07/29/2003	07/29/2008	DSS Common Stock	45,000	$2.95	D
Non-Qualified Stock Option	06/07/2004	07/01/2011	DSS Common Stock	28,000	$2.93	D
Non-Qualified Stock Option	06/28/2005	06/28/2012	DSS Common Stock	20,000	$2.92	D
Restricted Stock Units	⁽¹⁾	⁽¹⁾	DSS Common Stock	50,000	⁽²⁾	D

Explanation of Responses:

1. Restricted Stock Units will vest over a period of two (2) years, as follows: the first 50% will vest on September 1, 2007 and the remaining 50% on September 1, 2008.

2. Restricted Stock Units convert to shares of Common Stock on a 1-for-1 basis.

3. Restricted Stock.

	/s/ Zoey Armstrong, by Zoey Armstrong, Attorney in Fact for Andy Panayides	09/05/2006
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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