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 *   Alton Gregg H 2. Date of Event Requiring Statement (Month/Day/Year) 07/27/2005 3. Issuer Name and Ticker or Trading Symbol GILEAD SCIENCES INC [GILD] (Last) (First) (Middle) GILEAD SCIENCES, INC., 333 LAKESIDE DRIVE 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) SVP, General Counsel 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) FOSTER CITY, CA 94404 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 19,354 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)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Incentive Stock Option (right to buy)	  (1)	01/18/2011	Common Stock	5,000	$ 7.3985	D	Â
Incentive Stock Option (right to buy)	  (2)	04/05/2010	Common Stock	2,994	$ 7.4063	D	Â
Incentive Stock Option (right to buy)	  (3)	04/18/2011	Common Stock	6,000	$ 9.81	D	Â
Incentive Stock Option (right to buy)	  (4)	07/19/2011	Common Stock	5,476	$ 13.6025	D	Â
Incentive Stock Option (right to buy)	  (5)	01/30/2012	Common Stock	3,000	$ 16.4375	D	Â
Incentive Stock Option (right to buy)	  (6)	10/30/2012	Common Stock	2,992	$ 16.935	D	Â
Incentive Stock Option (right to buy)	  (7)	01/29/2013	Common Stock	3,500	$ 17.885	D	Â
Incentive Stock Option (right to buy)	  (8)	01/28/2014	Common Stock	3,000	$ 30.53	D	Â
Incentive Stock Option (right to buy)	  (9)	01/26/2015	Common Stock	2,500	$ 32.02	D	Â
Incentive Stock Option (right to buy)	  (10)	07/30/2013	Common Stock	1,068	$ 34.995	D	Â
Incentive Stock Option (right to buy)	  (11)	11/02/2014	Common Stock	237	$ 35.35	D	Â
Incentive Stock Option (right to buy)	  (12)	05/09/2015	Common Stock	515	$ 38.72	D	Â
Non-Qualified Stock Option (right to buy)	  (1)	01/18/2011	Common Stock	5,000	$ 7.3985	D	Â
Non-Qualified Stock Option (right to buy)	  (2)	04/05/2010	Common Stock	3,000	$ 7.4063	D	Â
Non-Qualified Stock Option (right to buy)	  (13)	10/21/2009	Common Stock	15,010	$ 8.336	D	Â
Non-Qualified Stock Option (right to buy)	  (3)	04/18/2011	Common Stock	5,000	$ 9.81	D	Â
Non-Qualified Stock Option (right to buy)	  (4)	07/19/2011	Common Stock	74,524	$ 13.6025	D	Â
Non-Qualified Stock Option (right to buy)	  (5)	01/30/2012	Common Stock	57,000	$ 16.4375	D	Â
Non-Qualified Stock Option (right to buy)	  (6)	10/30/2012	Common Stock	21,008	$ 16.935	D	Â
Non-Qualified Stock Option (right to buy)	  (14)	10/25/2011	Common Stock	30,000	$ 17.1625	D	Â
Non-Qualified Stock Option (right to buy)	  (7)	01/29/2013	Common Stock	66,500	$ 17.885	D	Â
Non-Qualified Stock Option (right to buy)	  (8)	01/28/2014	Common Stock	57,000	$ 30.53	D	Â
Non-Qualified Stock Option (right to buy)	  (9)	01/26/2015	Common Stock	47,500	$ 32.02	D	Â
Non-Qualified Stock Option (right to buy)	  (10)	07/30/2013	Common Stock	38,932	$ 34.995	D	Â
Non-Qualified Stock Option (right to buy)	  (11)	11/02/2014	Common Stock	19,763	$ 35.35	D	Â
Non-Qualified Stock Option (right to buy)	  (12)	05/09/2015	Common Stock	29,485	$ 38.72	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Alton Gregg H GILEAD SCIENCES, INC. 333 LAKESIDE DRIVE FOSTER CITY, CA 94404	Â	Â	  SVP, General Counsel	Â

Signatures

/s/Gregg H. Alton		07/29/2005
**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)	Options vest 20% on 1/18/2002, first anniversary date of the grant, and the remaining will vest quarterly over the next four years.
(2)	Options vest 20% on 4/5/2001, first anniversary date of the grant, and the remaining will vest quarterly over the next four years.
(3)	Options vest 20% on 4/18/2002, first anniversary date of the grant, and the remaining will vest quarterly over the next four years.
(4)	Options vest 20% on 7/19/2002, first anniversary date of the grant, and the remaining will vest quarterly over the next four years.
(5)	Options vest 20% on 1/30/2003, first anniversary date of the grant, and the remaining will vest quarterly over the next four years.
(6)	Options vest 20% on 10/30/2003, first anniversary date of the grant, and the remaining will vest quarterly over the next four years.
(7)	Options vest 20% on 1/29/2004, first anniversary date of the grant, and the remaining will vest quarterly over the next four years.
(8)	Options vest 20% on 1/28/2005, first anniversary date of the grant, and the remaining will vest quarterly over the next four years.
(9)	Options vest 20% on 1/26/2006, first anniversary date of the grant, and the remaining will vest quarterly over the next four years.
(10)	Options vest 20% on 7/30/2004, first anniversary date of the grant, and the remaining will vest quarterly over the next four years.
(11)	Options vest 20% on 11/2/2005, first anniversary date of the grant, and the remaining will vest quarterly over the next four years.
(12)	Options vest 20% on 5/9/2006, first anniversary date of the grant, and the remaining will vest quarterly over the next four years.
(13)	Options vest 20% on 10/21/2000, first anniversary date of the grant, and the remaining will vest quarterly over the next four years.
(14)	Options vest 20% on 10/25/2002, first anniversary date of the grant, and the remaining will vest quarterly over the next four years.

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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