BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Clean Yield Group's Holding History (CIK: 0001525865)

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

Q3 2022

Shares 69 Value ($000) $18 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 171 Value ($000) $35 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 1,102 Value ($000) $232 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 3,830 Value ($000) $919 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 5,413 Value ($000) $1,532 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 6,603 Value ($000) $2,286 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 13,254 Value ($000) $3,708 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 13,212 Value ($000) $3,235 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 13,476 Value ($000) $3,823 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 12,828 Value ($000) $3,432 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 13,266 Value ($000) $4,197 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 13,240 Value ($000) $3,929 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 13,477 Value ($000) $3,138 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 13,142 Value ($000) $3,074 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 10,313 Value ($000) $2,438 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 7,323 Value ($000) $2,204 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 7,338 Value ($000) $2,593 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 7,709 Value ($000) $2,237 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 4,764 Value ($000) $1,304 Avg Close $310.41 Range $259.76 - $370.57

Q1 2017

Shares 103 Value ($000) $28 Avg Close $282.75 Range $260.50 - $301.42

Q3 2016

Shares 103 Value ($000) $32 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 49 Value ($000) $12 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 59 Value ($000) $16 Avg Close $264.15 Range $242.07 - $301.02

Q1 2015

Shares 70 Value ($000) $30 Avg Close $394.14 Range $334.40 - $480.18

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2022	69	$18	$212.38	$193.65 - $283.44
Q2 2022	171	$35	$204.43	$187.16 - $225.50
Q1 2022	1,102	$232	$217.46	$192.67 - $249.00
Q4 2021	3,830	$919	$257.12	$221.72 - $290.76
Q3 2021	5,413	$1,532	$327.75	$282.64 - $372.12
Q2 2021	6,603	$2,286	$302.94	$257.03 - $468.55
Q1 2021	13,254	$3,708	$269.69	$238.40 - $296.38
Q4 2020	13,212	$3,235	$259.08	$223.25 - $363.92
Q3 2020	13,476	$3,823	$278.91	$261.87 - $312.00
Q2 2020	12,828	$3,432	$300.59	$257.60 - $350.24
Q1 2020	13,266	$4,197	$303.47	$262.25 - $374.99
Q4 2019	13,240	$3,929	$277.46	$219.70 - $318.00
Q3 2019	13,477	$3,138	$232.85	$215.78 - $246.99
Q2 2019	13,142	$3,074	$230.90	$219.20 - $245.35
Q1 2019	10,313	$2,438	$314.89	$216.12 - $344.00
Q4 2018	7,323	$2,204	$319.14	$278.46 - $358.41
Q3 2018	7,338	$2,593	$344.30	$288.13 - $388.67
Q2 2018	7,709	$2,237	$281.15	$249.17 - $310.91
Q1 2018	4,764	$1,304	$310.41	$259.76 - $370.57
Q1 2017	103	$28	$282.75	$260.50 - $301.42
Q3 2016	103	$32	$296.18	$240.07 - $333.65
Q2 2016	49	$12	$263.54	$223.02 - $292.69
Q1 2016	59	$16	$264.15	$242.07 - $301.02
Q1 2015	70	$30	$394.14	$334.40 - $480.18