BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Legacy Private Trust Co.'s Holding History (CIK: 0001352547)

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

Q4 2020

Shares 1,102 Value ($000) $270 Avg Close $259.08 Range $223.25 - $363.92

Q4 2018

Shares 4,009 Value ($000) $1,206 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 7,014 Value ($000) $2,478 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 6,817 Value ($000) $1,979 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 6,733 Value ($000) $1,844 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 5,202 Value ($000) $1,657 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 2,217 Value ($000) $694 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 1,580 Value ($000) $429 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 3,220 Value ($000) $880 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 4,235 Value ($000) $1,201 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 8,110 Value ($000) $2,539 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 3,630 Value ($000) $878 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 4,100 Value ($000) $1,067 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 3,940 Value ($000) $1,207 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 4,180 Value ($000) $1,220 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 4,530 Value ($000) $1,830 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 6,140 Value ($000) $2,593 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 5,810 Value ($000) $1,972 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 5,890 Value ($000) $1,948 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 6,060 Value ($000) $1,911 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 6,080 Value ($000) $1,860 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 6,370 Value ($000) $1,781 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 5,820 Value ($000) $1,401 Avg Close $223.81 Range $203.55 - $248.95

Q2 2013

Shares 8,220 Value ($000) $1,769 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2020	1,102	$270	$259.08	$223.25 - $363.92
Q4 2018	4,009	$1,206	$319.14	$278.46 - $358.41
Q3 2018	7,014	$2,478	$344.30	$288.13 - $388.67
Q2 2018	6,817	$1,979	$281.15	$249.17 - $310.91
Q1 2018	6,733	$1,844	$310.41	$259.76 - $370.57
Q4 2017	5,202	$1,657	$320.80	$301.81 - $348.84
Q3 2017	2,217	$694	$296.11	$269.50 - $330.00
Q2 2017	1,580	$429	$264.42	$244.28 - $291.90
Q1 2017	3,220	$880	$282.75	$260.50 - $301.42
Q4 2016	4,235	$1,201	$296.43	$268.00 - $329.83
Q3 2016	8,110	$2,539	$296.18	$240.07 - $333.65
Q2 2016	3,630	$878	$263.54	$223.02 - $292.69
Q1 2016	4,100	$1,067	$264.15	$242.07 - $301.02
Q4 2015	3,940	$1,207	$287.35	$254.00 - $311.65
Q3 2015	4,180	$1,220	$330.23	$265.00 - $412.24
Q2 2015	4,530	$1,830	$401.33	$368.88 - $432.88
Q1 2015	6,140	$2,593	$394.14	$334.40 - $480.18
Q4 2014	5,810	$1,972	$323.51	$290.85 - $361.93
Q3 2014	5,890	$1,948	$329.72	$298.31 - $349.00
Q2 2014	6,060	$1,911	$300.97	$272.02 - $322.25
Q1 2014	6,080	$1,860	$317.43	$270.62 - $358.89
Q4 2013	6,370	$1,781	$258.65	$221.07 - $298.82
Q3 2013	5,820	$1,401	$223.81	$203.55 - $248.95
Q2 2013	8,220	$1,769	$213.68	$191.80 - $242.64