BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

IRIDIAN ASSET MANAGEMENT LLC/CT's Holding History (CIK: 0001033427)

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

Q3 2020
Shares 4,772 Value ($000) $1,354 Avg Close $278.91 Range $261.87 - $312.00
Q1 2017
Shares 5,000 Value ($000) $1,367 Avg Close $282.75 Range $260.50 - $301.42
Q4 2016
Shares 10,000 Value ($000) $2,836 Avg Close $296.43 Range $268.00 - $329.83
Q3 2016
Shares 16,000 Value ($000) $5,008 Avg Close $296.18 Range $240.07 - $333.65
Q2 2016
Shares 16,000 Value ($000) $3,869 Avg Close $263.54 Range $223.02 - $292.69
Q1 2016
Shares 16,000 Value ($000) $4,165 Avg Close $264.15 Range $242.07 - $301.02
Q4 2015
Shares 14,000 Value ($000) $4,289 Avg Close $287.35 Range $254.00 - $311.65
Q3 2015
Shares 10,000 Value ($000) $2,918 Avg Close $330.23 Range $265.00 - $412.24
Q2 2015
Shares 7,000 Value ($000) $2,828 Avg Close $401.33 Range $368.88 - $432.88