BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Douglass Winthrop Advisors, LLC's Holding History (CIK: 0001308527)

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

Q3 2017
Shares 2,550 Value ($000) $798 Avg Close $296.11 Range $269.50 - $330.00
Q2 2017
Shares 2,550 Value ($000) $692 Avg Close $264.42 Range $244.28 - $291.90
Q1 2017
Shares 2,550 Value ($000) $697 Avg Close $282.75 Range $260.50 - $301.42
Q4 2016
Shares 2,550 Value ($000) $723 Avg Close $296.43 Range $268.00 - $329.83
Q3 2016
Shares 2,550 Value ($000) $798 Avg Close $296.18 Range $240.07 - $333.65
Q2 2016
Shares 2,750 Value ($000) $665 Avg Close $263.54 Range $223.02 - $292.69
Q1 2016
Shares 2,850 Value ($000) $742 Avg Close $264.15 Range $242.07 - $301.02
Q3 2014
Shares 2,979 Value ($000) $985 Avg Close $329.72 Range $298.31 - $349.00
Q2 2014
Shares 2,950 Value ($000) $930 Avg Close $300.97 Range $272.02 - $322.25
Q1 2014
Shares 2,950 Value ($000) $902 Avg Close $317.43 Range $270.62 - $358.89
Q4 2013
Shares 2,950 Value ($000) $825 Avg Close $258.65 Range $221.07 - $298.82
Q3 2013
Shares 2,950 Value ($000) $710 Avg Close $223.81 Range $203.55 - $248.95
Q2 2013
Shares 2,950 Value ($000) $635 Avg Close $213.68 Range $191.80 - $242.64