BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

K2 PRINCIPAL FUND, L.P.'s Holding History (CIK: 0001461790)

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

Q2 2017

Shares 3,600 Value ($000) $977 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 4,400 Value ($000) $1,203 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 2,400 Value ($000) $681 Avg Close $296.43 Range $268.00 - $329.83

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2017	3,600	$977	$264.42	$244.28 - $291.90
Q1 2017	4,400	$1,203	$282.75	$260.50 - $301.42
Q4 2016	2,400	$681	$296.43	$268.00 - $329.83