SEC Form 4
FORM 4 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
or Section 30(h) of the Investment Company Act of 1940
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 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
CARACCIOLO ANTHONY
(Last) (First) (Middle)
650 CLIFFSIDE DRIVE
(Street)
SAN DIMAS CA 91773
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
GILEAD SCIENCES INC [ GILD ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
SVP
3. Date of Earliest Transaction (Month/Day/Year)
05/10/2005
4. 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 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 05/10/2005 M 9,370 A $8.5391 9,370(2) D
Common Stock 05/10/2005 M 14,630 A $8.5391 24,000 D
Common Stock 05/10/2005 M 29,990 A $7.0782 53,990 D
Common Stock 05/10/2005 M 6,016 A $7.0782 60,006 D
Commn Stock 05/10/2005 M 18,512 A $7.3985 78,518 D
Common Stock 05/10/2005 S 9,370 D $38.61 69,148 D
Common Stock 05/10/2005 S 1,430 D $38.61 67,718 D
Common Stock 05/10/2005 S 2,100 D $38.62 65,618 D
Common Stock 05/10/2005 S 1,200 D $38.63 64,418 D
Common Stock 05/10/2005 S 600 D $38.64 63,818 D
Common Stock 05/10/2005 S 1,300 D $38.65 62,518 D
Common Stock 05/10/2005 S 300 D $38.66 62,218 D
Common Stock 05/10/2005 S 2,400 D $38.68 59,818 D
Common Stock 05/10/2005 S 1,000 D $38.69 58,818 D
Common Stock 05/10/2005 S 300 D $38.7 58,518 D
Common Stock 05/10/2005 S 3,700 D $38.71 54,818 D
Common Stock 05/10/2005 S 1,900 D $38.72 52,918 D
Common Stock 05/10/2005 S 1,056 D $38.73 51,862 D
Common Stock 05/10/2005 S 3,644 D $38.73 48,218 D
Common Stock 05/10/2005 S 1,100 D $38.74 47,118 D
Common Stock 05/10/2005 S 7,960 D $38.75 39,158 D
Common Stock 05/10/2005 S 13,540 D $38.75 25,618 D
Common Stock 05/10/2005 S 1,090 D $38.76 24,528 D
Common Stock 05/10/2005 S 7,610 D $38.76 16,918 D
Common Stock 05/10/2005 S 2,300 D $38.77 14,618 D
Common Stock 05/10/2005 S 4,100 D $38.78 10,518 D
Common Stock 05/10/2005 S 2,500 D $38.79 8,018 D
Common Stock 05/10/2005 S 1,200 D $38.8 6,818 D
Common Stock 05/10/2005 S 802 D $38.81 6,016 D
Common Stock 05/10/2005 S 498 D $38.81 5,518 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 (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 Securities Underlying Derivative Security (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: 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) $8.5391 05/10/2005 M 9,370 (1) 07/29/2009 Common Stock 9,370 $0 0 D
Incentive Stock Option (right to buy) $8.5391 05/10/2005 M 14,630 (1) 07/29/2009 Common Stock 14,630 $0 0 D
Non-Qualified Stock Option (right to buy) $7.0782 05/10/2005 M 29,990 (1) 01/26/2010 Common Stock 29,990 $0 0 D
Incentive Stock Option (right to buy) $7.0782 05/10/2005 M 6,016 (1) 01/26/2010 Common Stock 6,016 $0 0 D
Non-Qualified Stock Option (right to buy) $7.3985 05/10/2005 M 18,512 (1) 01/17/2001 Common Stock 18,512 $0 2,512 D
Explanation of Responses:
1. Options vest over a period of five years beginning on date of grant. Twenty percent (20%) vests on the first anniversary date of the grant, and the remaining balance vests five percent(5%)every three months thereafter.
2. This report on Form 4 is the first of two to report insider transactions that were executed on May 10, 2005.
Remarks:
All shares and dollar amounts reflect a two-for-one split effected on September 3, 2004 benefitting all shareholders of records as of August 12, 2004.
/s/ Anthony Caracciolo 05/12/2005
** 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 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).
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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