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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
882095	Gilead Sciences Inc	GILD	Biological Products, (No Disgnostic Substances) (2836)	943047598

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1334682	H Gregg Alton	Gilead Sciences, Inc. 333 Lakeside Drive Foster City CA 94404	Evp, Corp & Med Affairs	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2011-04-01	12,000	$16.01	47,481	No	4	M	Direct
Common Stock	Disposition	2011-04-01	13,000	$42.47	34,481	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Non-Qualified Stock Option (right to buy)	Disposition	2011-04-01	12,000	$0.00	12,000	$16.01

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
75,500		2015-01-26	No	4	M	Direct

Footnotes

The options have a 5 year vesting schedule. 20% of the options vested on January 26, 2006, the first anniversary of the date of the grant. The balance vested 5% every three months thereafter until fully vested on January 26, 2010. The options expire on January 26, 2015.
Sale prices reported for the transaction reported here range from $42.27 to $42.58. Full information regarding the number of shares purchased or sold at each price will be provided to the SEC, the issuer or its shareowners upon request.