AMGEN INC

Ticker: AMGN CUSIP: 031162100 Class: COM

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

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

Q1 2014

Shares 234,431 Value ($000) $28,915 Avg Close $86.89 Range $80.81 - $92.60

Q4 2013

Shares 1,044,358 Value ($000) $119,140 Avg Close $81.11 Range $75.24 - $85.16

Q3 2013

Shares 1,202,551 Value ($000) $134,596 Avg Close $76.98 Range $67.33 - $83.88

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2014	234,431	$28,915	$86.89	$80.81 - $92.60
Q4 2013	1,044,358	$119,140	$81.11	$75.24 - $85.16
Q3 2013	1,202,551	$134,596	$76.98	$67.33 - $83.88