BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

CHELSEA COUNSEL CO's Holding History (CIK: 0001276755)

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

Q4 2016
Shares 1,500 Value ($000) $425 Avg Close $296.43 Range $268.00 - $329.83
Q3 2016
Shares 1,500 Value ($000) $470 Avg Close $296.18 Range $240.07 - $333.65
Q2 2016
Shares 3,700 Value ($000) $895 Avg Close $263.54 Range $223.02 - $292.69
Q1 2016
Shares 3,700 Value ($000) $963 Avg Close $264.15 Range $242.07 - $301.02
Q4 2015
Shares 3,700 Value ($000) $1,133 Avg Close $287.35 Range $254.00 - $311.65
Q3 2015
Shares 4,800 Value ($000) $1,401 Avg Close $330.23 Range $265.00 - $412.24
Q2 2015
Shares 2,300 Value ($000) $929 Avg Close $401.33 Range $368.88 - $432.88
Q1 2015
Shares 2,000 Value ($000) $844 Avg Close $394.14 Range $334.40 - $480.18
Q4 2014
Shares 2,023 Value ($000) $687 Avg Close $323.51 Range $290.85 - $361.93
Q3 2014
Shares 1,023 Value ($000) $338 Avg Close $329.72 Range $298.31 - $349.00
Q2 2014
Shares 1,623 Value ($000) $512 Avg Close $300.97 Range $272.02 - $322.25
Q4 2013
Shares 1,023 Value ($000) $286 Avg Close $258.65 Range $221.07 - $298.82
Q3 2013
Shares 1,023 Value ($000) $246 Avg Close $223.81 Range $203.55 - $248.95
Q2 2013
Shares 1,823 Value ($000) $392 Avg Close $213.68 Range $191.80 - $242.64