BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

JW Asset Management, LLC's Holding History (CIK: 0001549738)

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

Q2 2015

Shares 4,950 Value ($000) $2,000 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 8,104 Value ($000) $3,422 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 3,869 Value ($000) $1,313 Avg Close $323.51 Range $290.85 - $361.93

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2015	4,950	$2,000	$401.33	$368.88 - $432.88
Q1 2015	8,104	$3,422	$394.14	$334.40 - $480.18
Q4 2014	3,869	$1,313	$323.51	$290.85 - $361.93