Sec Form 3 Filing - Wold Jim @ QUANTUM CORP /DE/ - 2007-03-29

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP 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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1. Name and Address of Reporting Person Wold Jim 2. Issuer Name and Ticker or Trading Symbol QUANTUM CORP /DE/ [ QTM] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) SVP, RSA (Last) (First) (Middle) QUANTUM CORPORATION, 1650 TECHNOLOGY DRIVE, SUITE 700 3. Date of Earliest Transaction (MM/DD/YY) 03/29/2007 (Street) SAN JOSE, CA95110 4. If Amendment, Date Original Filed (MM/DD/YY) 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 Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 23,686 D Common Stock ( 1 ) 10,500 D Common Stock ( 2 ) 21,250 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Non Qualified Stock Option (Right to Buy) $ 2.65 02/01/2006( 3 ) 01/18/2012 Common Stock ( 4 ) 75,000 D Non Qualified Stock Option (Right to Buy) $ 2.76 02/25/2005( 5 ) 01/25/2012 Common Stock ( 4 ) 52,500 D Non Qualified Stock Option (Right to Buy) $ 2.62 07/01/2005( 5 ) 05/31/2012 Common Stock ( 4 ) 400,000 D Non Qualified Stock Option (Right to Buy) $ 2.92 08/01/2005( 5 ) 06/28/2012 Common Stock ( 4 ) 62,500 D Restricted Stock Units ( 6 ) $ 0 08/22/2007( 7 ) ( 7 ) Common Stock ( 6 ) 80,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Wold Jim QUANTUM CORPORATION 1650 TECHNOLOGY DRIVE, SUITE 700 SAN JOSE, CA95110 SVP, RSA Signatures Shawn Hall, attorney-in-fact 04/09/2007 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Restricted Stock Award granted on January 25, 2005 under Rule 16b-3. Restricted stock will vest 25% annually over three years beginning on January 25, 2006. ( 2 )Restricted Stock Award granted on June 28, 2005 under Rule 16b-3. Restricted stock will vest 25% annually over four years beginning on July 1, 2006. ( 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 )Right to buy under Rule 16b-3 plan. ( 5 )Stock option vests monthly in equal installments over 4 years. ( 6 )Restricted Stock Units convert to shares of Common Stock on a 1-for-1 basis. ( 7 )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.

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 4(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).

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