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 *
Fowler John F
   2. Issuer Name and Ticker or Trading Symbol
SUN MICROSYSTEMS, INC. [JAVA] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
EVP, Systems Group
(Last)
(First)
(Middle)
4150 NETWORK CIRCLE		 3. Date of Earliest Transaction (Month/Day/Year)
07/27/2008
(Street)

SANTA CLARA, CA 95054		 4. If Amendment, Date 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
(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 07/27/2008   A(2)   28,125 A $ 0.0007 62,036 D  
Common Stock 07/27/2008   F(3)   3,352 D $ 10.43 58,684 D  
Common Stock 07/28/2008   F(3)   735 D $ 9.94 57,949 (4) D  
Common Stock               2,458 I Shares held by wife.

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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
Employee Stock Option (Right to Buy) $ 74.32               (1) 04/18/2009 Common Stock 2,000   2,000 D  
Employee Stock Option (Right to Buy) $ 31.64               (1) 09/27/2009 Common Stock 2,500   2,500 D  
Employee Stock Option (Right to Buy) $ 50.36               (1) 11/07/2009 Common Stock 6,250   6,250 D  
Employee Stock Option (Right to Buy) $ 50.36               (1) 11/07/2009 Common Stock 6,250   6,250 D  
Employee Stock Option (Right to Buy) $ 36.56               (1) 03/19/2010 Common Stock 50   50 D  
Employee Stock Option (Right to Buy) $ 36.56               (1) 03/19/2010 Common Stock 1,250   1,250 D  
Employee Stock Option (Right to Buy) $ 14.8               (1) 07/25/2010 Common Stock 2,000   2,000 D  
Employee Stock Option (Right to Buy) $ 14.8               (1) 07/25/2010 Common Stock 6,720   6,720 D  
Employee Stock Option (Right to Buy) $ 16.8               (1) 05/21/2011 Common Stock 7,500   7,500 D  
Employee Stock Option (Right to Buy) $ 16.832               (1) 11/13/2011 Common Stock 6,250   6,250 D  
Employee Stock Option (Right to Buy) $ 15.16               (1) 07/29/2012 Common Stock 75,000   75,000 D  
Employee Stock Option (Right to Buy) $ 15.4               (1) 07/28/2013 Common Stock 75,000   75,000 D  
Employee Stock Option (Right to Buy) $ 17.04               (1) 07/27/2014 Common Stock 125,000   125,000 D  
Employee Stock Option (Right to Buy) $ 20.4               (1) 07/31/2015 Common Stock 106,250   106,250 D  
Employee Stock Option (Right to Buy) $ 74.32               (1) 04/18/2009 Common Stock 375   375 I Options held by wife.
Employee Stock Option (Right to Buy) $ 36.56               (1) 03/19/2010 Common Stock 50   50 I Options held by wife.
Employee Stock Option (Right to Buy) $ 14.8               (1) 07/25/2010 Common Stock 750   750 I Options held by wife.
Employee Stock Option (Right to Buy) $ 15.76               (1) 09/17/2012 Common Stock 750   750 I Options held by wife.

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Fowler John F
4150 NETWORK CIRCLE
SANTA CLARA, CA 95054		       EVP, Systems Group  

Signatures

 /s/ John F. Fowler   07/29/2008
**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) This option vests and becomes exercisable in five equal annual installments beginning on the first anniversary of the date of grant.
(2) This includes performance-based restricted stock units in which the award criteria was satisfied in 2007. Upon satisfaction of the award criteria, 25% of the underlying shares vested immediately and 25% of the underlying shares shall vest on each anniversary of the date of grant thereafter. The reporting person's Form 4 filed in connection with the initial vesting of this performance-based restricted stock unit award did not include the report of the unvested portion, which is now being reported.
(3) This represents the surrender of shares to the issuer upon the vesting of time-based restricted stock units to satisfy tax withholding obligations.
(4) This includes 2,063 shares of unvested restricted stock and 18,750 shares of unvested restricted stock units.

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