BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

KINGDON CAPITAL MANAGEMENT, L.L.C.'s Holding History (CIK: 0001000097)

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

Q1 2018

Shares 10,076 Value ($000) $2,759 Avg Close $310.41 Range $259.76 - $370.57

Q1 2015

Shares 5,100 Value ($000) $2,153 Avg Close $394.14 Range $334.40 - $480.18

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	10,076	$2,759	$310.41	$259.76 - $370.57
Q1 2015	5,100	$2,153	$394.14	$334.40 - $480.18