GILEAD SCIENCES INC

Ticker: GILD CUSIP: 375558103 Class: COM

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's Holding History (CIK: 0001644956)

Note: Option positions (PUT/CALL) are excluded.

Q3 2016

Shares 2,937 Value ($000) $232 Avg Close $57.78 Range $54.47 - $63.12

Q2 2016

Shares 869,421 Value ($000) $72,527 Avg Close $62.76 Range $55.35 - $72.83

Q1 2016

Shares 1,360,342 Value ($000) $124,961 Avg Close $63.47 Range $57.57 - $70.78

Q4 2015

Shares 1,458,039 Value ($000) $147,539 Avg Close $72.90 Range $66.06 - $77.78

Q3 2015

Shares 1,497,055 Value ($000) $146,996 Avg Close $77.50 Range $59.97 - $83.93

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2016	2,937	$232	$57.78	$54.47 - $63.12
Q2 2016	869,421	$72,527	$62.76	$55.35 - $72.83
Q1 2016	1,360,342	$124,961	$63.47	$57.57 - $70.78
Q4 2015	1,458,039	$147,539	$72.90	$66.06 - $77.78
Q3 2015	1,497,055	$146,996	$77.50	$59.97 - $83.93