BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

ADVENT CAPITAL MANAGEMENT /DE/'s Holding History (CIK: 0001097278)

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

Q4 2017
Shares 3,626 Value ($000) $1,155 Avg Close $320.80 Range $301.81 - $348.84
Q2 2017
Shares 15,500 Value ($000) $4,206 Avg Close $264.42 Range $244.28 - $291.90
Q1 2017
Shares 17,000 Value ($000) $4,648 Avg Close $282.75 Range $260.50 - $301.42
Q4 2016
Shares 17,000 Value ($000) $4,821 Avg Close $296.43 Range $268.00 - $329.83
Q3 2016
Shares 17,000 Value ($000) $5,322 Avg Close $296.18 Range $240.07 - $333.65
Q2 2016
Shares 15,000 Value ($000) $3,627 Avg Close $263.54 Range $223.02 - $292.69
Q1 2016
Shares 15,000 Value ($000) $3,905 Avg Close $264.15 Range $242.07 - $301.02
Q4 2015
Shares 15,000 Value ($000) $4,645 Avg Close $287.35 Range $254.00 - $311.65
Q3 2015
Shares 15,000 Value ($000) $4,377 Avg Close $330.23 Range $265.00 - $412.24