BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

AMICA MUTUAL INSURANCE CO's Holding History (CIK: 0000857508)

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

Q1 2020

Shares 5,787 Value ($000) $1,831 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 5,787 Value ($000) $1,717 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 5,787 Value ($000) $1,347 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 5,787 Value ($000) $1,353 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 7,027 Value ($000) $1,661 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 7,027 Value ($000) $2,115 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 7,027 Value ($000) $2,483 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 7,027 Value ($000) $2,040 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 7,027 Value ($000) $1,924 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 8,530 Value ($000) $2,717 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 11,334 Value ($000) $3,549 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 11,334 Value ($000) $3,076 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 11,334 Value ($000) $3,099 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 11,334 Value ($000) $3,214 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 14,479 Value ($000) $4,532 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 14,479 Value ($000) $3,501 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 14,479 Value ($000) $3,769 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 14,479 Value ($000) $4,436 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 14,479 Value ($000) $4,225 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 14,479 Value ($000) $5,849 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 15,909 Value ($000) $6,717 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 15,909 Value ($000) $5,400 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 15,909 Value ($000) $5,263 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 15,909 Value ($000) $5,016 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 15,909 Value ($000) $4,866 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 18,577 Value ($000) $5,194 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 18,577 Value ($000) $4,473 Avg Close $223.81 Range $203.55 - $248.95

Q2 2013

Shares 18,577 Value ($000) $3,998 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2020	5,787	$1,831	$303.47	$262.25 - $374.99
Q4 2019	5,787	$1,717	$277.46	$219.70 - $318.00
Q3 2019	5,787	$1,347	$232.85	$215.78 - $246.99
Q2 2019	5,787	$1,353	$230.90	$219.20 - $245.35
Q1 2019	7,027	$1,661	$314.89	$216.12 - $344.00
Q4 2018	7,027	$2,115	$319.14	$278.46 - $358.41
Q3 2018	7,027	$2,483	$344.30	$288.13 - $388.67
Q2 2018	7,027	$2,040	$281.15	$249.17 - $310.91
Q1 2018	7,027	$1,924	$310.41	$259.76 - $370.57
Q4 2017	8,530	$2,717	$320.80	$301.81 - $348.84
Q3 2017	11,334	$3,549	$296.11	$269.50 - $330.00
Q2 2017	11,334	$3,076	$264.42	$244.28 - $291.90
Q1 2017	11,334	$3,099	$282.75	$260.50 - $301.42
Q4 2016	11,334	$3,214	$296.43	$268.00 - $329.83
Q3 2016	14,479	$4,532	$296.18	$240.07 - $333.65
Q2 2016	14,479	$3,501	$263.54	$223.02 - $292.69
Q1 2016	14,479	$3,769	$264.15	$242.07 - $301.02
Q4 2015	14,479	$4,436	$287.35	$254.00 - $311.65
Q3 2015	14,479	$4,225	$330.23	$265.00 - $412.24
Q2 2015	14,479	$5,849	$401.33	$368.88 - $432.88
Q1 2015	15,909	$6,717	$394.14	$334.40 - $480.18
Q4 2014	15,909	$5,400	$323.51	$290.85 - $361.93
Q3 2014	15,909	$5,263	$329.72	$298.31 - $349.00
Q2 2014	15,909	$5,016	$300.97	$272.02 - $322.25
Q1 2014	15,909	$4,866	$317.43	$270.62 - $358.89
Q4 2013	18,577	$5,194	$258.65	$221.07 - $298.82
Q3 2013	18,577	$4,473	$223.81	$203.55 - $248.95
Q2 2013	18,577	$3,998	$213.68	$191.80 - $242.64