Ownership Submission
FORM 4
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 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 *
Weili Dai & Sehat Sutardja
   2. Issuer Name and Ticker or Trading Symbol
MARVELL TECHNOLOGY GROUP LTD [MRVL] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director __X__ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Executive Vice President & CEO
(Last)
(First)
(Middle)
700 FIRST AVENUE		 3. Date of Earliest Transaction (Month/Day/Year)
07/20/2005
(Street)

SUNNYVALE, CA 94089		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 07/20/2005   S   100,000 D $ 42.261 10,426,667 I By Sutardja Family Partners (1)
Common Stock 07/22/2005   S   200,000 D $ 43.209 10,226,667 I By Sutardja Family Partners (1)
Common Stock 07/22/2005   S   200,000 D $ 43.034 26,236,158 (2) D  

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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 (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 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
(Month/Day/Year)		 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
Stock Option (Right to Buy) $ 12.005               (3) 06/06/2012 Common Stock 200,000 (3)   200,000 (3) D  
Stock Option (Right to Buy) $ 12.005               (4) 06/06/2012 Common Stock 400,000 (4)   400,000 (4) D  
Stock Option (Right to Buy) $ 18.25               (5) 12/26/2013 Common Stock 2,000,000 (5)   2,000,000 (5) D  
Stock Option (Right to Buy) $ 18.25               (6) 12/26/2013 Common Stock 3,000,000 (6)   3,000,000 (6) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Weili Dai & Sehat Sutardja
700 FIRST AVENUE
SUNNYVALE, CA 94089		   X   X   Executive Vice President & CEO  
Sehat Sutardja & Weili Dai
700 FIRST AVENUE
SUNNYVALE, CA 94089		   X   X   CEO / Executive Vice President  

Signatures

 Weili Dai & Dr. Sehat Sutardja   07/22/2005
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Ms. Weili Dai and Dr. Sehat Sutardja are the general partners of The Sutardja Family Partners, a California family limited partnership.
(2) These securities are jointly owned by Ms. Weili Dai and Dr. Sehat Sutardja who are members of a "Group" for purposes Section 13(d) of the Exchange Act.
(3) This Stock Option (Right to Buy) of 200,000 shares which vests as follows: 25% on 06/06/03, and 4,166.66 shares per month from 07/06/03 - 06/06/06. Options become exerciseable as they vest. This Stock Option (Right to Buy) is owned directly by Ms. Weili Dai and indirectly by her spouse, Dr. Sehat Sutardja.
(4) This Stock Option (Right to Buy) of 400,000 shares which vests as follows: 25% on 06/06/03, and 8,333.32 shares per month from 07/06/03 - 06/06/06. Options become exerciseable as they vest. This Stock Option (Right to Buy) is owned directly by Dr. Sehat Sutardja and indirectly by his spouse, Ms. Weili Dai.
(5) This Stock Option (Right to Buy) of 2,000,000 which vests as follows: 25% on 12/26/04, and 41,666 per month from 01/26/05 - 12/26/07. Options become exerciseable as they vest. This Stock Option (Right to Buy) is owned directly by Ms. Weili Dai and indirectly by her spouse, Dr. Sehat Sutardja.
(6) This Stock Option (Right to Buy) of 3,000,000 shares which vests as follows: 25 % on 12/26/04, and 62,500 shares per month from 01/26/05 - 12/26/07. Options become exerciseable as they vest. This Stock Option (Right to Buy) is owned directly by Dr. Sehat Sutardja and indirectly by his spouse, Ms. Weili Dai.

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