BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

FACTORY MUTUAL INSURANCE CO's Holding History (CIK: 0000887818)

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

Q1 2025

Shares 49,200 Value ($000) $6,733 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 49,200 Value ($000) $7,524 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 49,200 Value ($000) $9,537 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 49,200 Value ($000) $11,406 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 49,200 Value ($000) $10,609 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 49,200 Value ($000) $12,731 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 49,200 Value ($000) $12,645 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 49,200 Value ($000) $14,015 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 42,000 Value ($000) $11,677 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 33,800 Value ($000) $9,360 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 33,800 Value ($000) $9,025 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 33,800 Value ($000) $6,893 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 33,800 Value ($000) $7,118 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 33,800 Value ($000) $7,379 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 38,365 Value ($000) $10,857 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 38,365 Value ($000) $13,285 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 39,160 Value ($000) $10,955 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 40,000 Value ($000) $9,794 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 40,000 Value ($000) $11,347 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 50,700 Value ($000) $13,565 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 50,700 Value ($000) $16,040 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 50,700 Value ($000) $15,045 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 70,100 Value ($000) $16,321 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 70,100 Value ($000) $16,393 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 70,100 Value ($000) $16,964 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 161,700 Value ($000) $48,658 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 201,000 Value ($000) $71,015 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 236,500 Value ($000) $68,643 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 178,200 Value ($000) $48,795 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 181,000 Value ($000) $57,660 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 174,900 Value ($000) $54,764 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 108,700 Value ($000) $29,497 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 80,700 Value ($000) $22,065 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 104,700 Value ($000) $30,419 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 104,700 Value ($000) $32,774 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 104,700 Value ($000) $25,319 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 104,700 Value ($000) $27,256 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 104,700 Value ($000) $32,075 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 108,700 Value ($000) $31,720 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 108,700 Value ($000) $43,908 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 108,700 Value ($000) $45,895 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 111,500 Value ($000) $37,849 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 114,200 Value ($000) $37,779 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 109,400 Value ($000) $34,495 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 60,000 Value ($000) $18,352 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 45,000 Value ($000) $12,581 Avg Close $258.65 Range $221.07 - $298.82

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2025	49,200	$6,733	$142.96	$128.51 - $157.09
Q4 2024	49,200	$7,524	$168.67	$145.07 - $195.00
Q3 2024	49,200	$9,537	$209.21	$188.78 - $238.00
Q2 2024	49,200	$11,406	$217.32	$189.44 - $237.54
Q1 2024	49,200	$10,609	$234.20	$211.02 - $268.30
Q4 2023	49,200	$12,731	$245.62	$220.86 - $269.43
Q3 2023	49,200	$12,645	$267.47	$251.85 - $287.60
Q2 2023	49,200	$14,015	$297.86	$273.39 - $319.76
Q1 2023	42,000	$11,677	$276.70	$254.80 - $295.90
Q4 2022	33,800	$9,360	$282.44	$250.31 - $311.88
Q3 2022	33,800	$9,025	$212.38	$193.65 - $283.44
Q2 2022	33,800	$6,893	$204.43	$187.16 - $225.50
Q1 2022	33,800	$7,118	$217.46	$192.67 - $249.00
Q4 2021	33,800	$7,379	$257.12	$221.72 - $290.76
Q3 2021	38,365	$10,857	$327.75	$282.64 - $372.12
Q2 2021	38,365	$13,285	$302.94	$257.03 - $468.55
Q1 2021	39,160	$10,955	$269.69	$238.40 - $296.38
Q4 2020	40,000	$9,794	$259.08	$223.25 - $363.92
Q3 2020	40,000	$11,347	$278.91	$261.87 - $312.00
Q2 2020	50,700	$13,565	$300.59	$257.60 - $350.24
Q1 2020	50,700	$16,040	$303.47	$262.25 - $374.99
Q4 2019	50,700	$15,045	$277.46	$219.70 - $318.00
Q3 2019	70,100	$16,321	$232.85	$215.78 - $246.99
Q2 2019	70,100	$16,393	$230.90	$219.20 - $245.35
Q1 2019	70,100	$16,964	$314.89	$216.12 - $344.00
Q4 2018	161,700	$48,658	$319.14	$278.46 - $358.41
Q3 2018	201,000	$71,015	$344.30	$288.13 - $388.67
Q2 2018	236,500	$68,643	$281.15	$249.17 - $310.91
Q1 2018	178,200	$48,795	$310.41	$259.76 - $370.57
Q4 2017	181,000	$57,660	$320.80	$301.81 - $348.84
Q3 2017	174,900	$54,764	$296.11	$269.50 - $330.00
Q2 2017	108,700	$29,497	$264.42	$244.28 - $291.90
Q1 2017	80,700	$22,065	$282.75	$260.50 - $301.42
Q4 2016	104,700	$30,419	$296.43	$268.00 - $329.83
Q3 2016	104,700	$32,774	$296.18	$240.07 - $333.65
Q2 2016	104,700	$25,319	$263.54	$223.02 - $292.69
Q1 2016	104,700	$27,256	$264.15	$242.07 - $301.02
Q4 2015	104,700	$32,075	$287.35	$254.00 - $311.65
Q3 2015	108,700	$31,720	$330.23	$265.00 - $412.24
Q2 2015	108,700	$43,908	$401.33	$368.88 - $432.88
Q1 2015	108,700	$45,895	$394.14	$334.40 - $480.18
Q4 2014	111,500	$37,849	$323.51	$290.85 - $361.93
Q3 2014	114,200	$37,779	$329.72	$298.31 - $349.00
Q2 2014	109,400	$34,495	$300.97	$272.02 - $322.25
Q1 2014	60,000	$18,352	$317.43	$270.62 - $358.89
Q4 2013	45,000	$12,581	$258.65	$221.07 - $298.82