Edgar Filing: QUANTUM CORP /DE/

Ownership Submission

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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person ^*

Â PARKER JESSE

2. Date of Event Requiring Statement (Month/Day/Year)
03/29/2007

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

(Last)

(First)

(Middle)

QUANTUM CORPORATION,Â 1650 TECHNOLOGY DRIVE, SUITE 700

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

_____ Director	_____ 10% Owner
__X__ Officer (give title below)	_____ Other (specify below)
SVP, Operations

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

(Street)

SAN JOSE,Â CAÂ 95110

6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

(City)

(State)

(Zip)

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)
Common Stock	57,724	D	Â
Common Stock	30,600 ⁽¹⁾	D	Â
Common Stock	9,800 ⁽²⁾	D	Â

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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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 of Derivative Security: 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		6. Nature of Indirect Beneficial Ownership (Instr. 5)
Non Qualified Stock Option (Right to Buy)	11/01/2003⁽³⁾	11/26/2012	Common Stock ⁽⁵⁾	80,000	$ 3.44	D	Â
Non Qualified Stock Option (Right to Buy)	08/01/2003⁽⁴⁾	07/29/2008	Common Stock ⁽⁵⁾	90,000	$ 2.95	D	Â
Non Qualified Stock Option (Right to Buy)	08/01/2004⁽⁶⁾	07/01/2011	Common Stock ⁽⁵⁾	49,000	$ 2.93	D	Â
Non Qualified Stock Option (Right to Buy)	06/01/2005⁽⁶⁾	06/01/2012	Common Stock ⁽⁵⁾	150,000	$ 2.62	D	Â
Non Qualified Stock Option (Right to Buy)	07/01/2005⁽⁶⁾	07/01/2012	Common Stock ⁽⁵⁾	90,000	$ 2.92	D	Â
Restricted Stock Units ⁽⁷⁾	08/22/2007⁽⁸⁾	Â ⁽⁸⁾	Common Stock ⁽⁷⁾	80,000	$ 0	D	Â
Non Qualified Stock Option (Right to Buy)	02/10/2005⁽⁶⁾	01/10/2012	Common Stock ⁽⁵⁾	25,000	$ 2.59	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
PARKER JESSE QUANTUM CORPORATION 1650 TECHNOLOGY DRIVE, SUITE 700 SAN JOSE,Â CAÂ 95110	Â	Â	Â SVP, Operations	Â

Signatures

Shawn Hall, attorney-in-fact		04/09/2007
^**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Grant of restricted stock under Rule 16b-3 on June 28, 2005. Resricted stock vests in four equal installments annually begininng July 1, 2006.
(2)	Grant of restricted stock under Rule 16b-3 on June 28, 2005. Resricted stock vests in three equal installments annually begininng July 1, 2005.
(3)	Stock option vests 25% on the first anniversary and monthly thereafter at a rate of 1/48th per month for the remaining three years.
(4)	Stock option vests monthly at a rate of 1/24th per month over two years.
(5)	Right to buy under Rule 16b-3 plan.
(6)	Stock option vests monthly in equal installments over 4 years.
(7)	Restricted Stock Units convert to shares of Common Stock on a 1-for-1 basis.
(8)	Restricted Stock Units will vest over a period of two years, as follows: the first 50% will vest on August 22, 2007 and the remaining 50% on August 22, 2008.

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