BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Cambridge Investment Research Advisors, Inc.'s Holding History (CIK: 0001419186)

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

Q4 2025

Shares 7,819 Value ($000) $1 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 4,341 Value ($000) $1 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 3,432 Value ($000) $0 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 3,828 Value ($000) $1 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 3,439 Value ($000) $1 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 3,207 Value ($000) $1 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 3,379 Value ($000) $1 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 3,769 Value ($000) $1 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 5,477 Value ($000) $1 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 5,759 Value ($000) $1 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 15,176 Value ($000) $4 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 10,564 Value ($000) $3 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 5,486 Value ($000) $2 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 5,842 Value ($000) $1,560 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 6,073 Value ($000) $1,239 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 5,791 Value ($000) $1,220 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 6,502 Value ($000) $1,560 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 7,152 Value ($000) $2,024 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 6,496 Value ($000) $2,249 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 6,898 Value ($000) $1,930 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 6,188 Value ($000) $1,515 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 7,273 Value ($000) $2,063 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 8,303 Value ($000) $2,221 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 6,674 Value ($000) $2,112 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 6,372 Value ($000) $1,891 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 4,918 Value ($000) $1,145 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 5,683 Value ($000) $1,329 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 6,133 Value ($000) $1,450 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 6,046 Value ($000) $1,819 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 5,842 Value ($000) $2,064 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 5,332 Value ($000) $1,548 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 5,185 Value ($000) $1,420 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 5,785 Value ($000) $1,843 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 5,948 Value ($000) $1,862 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 5,428 Value ($000) $1,473 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 5,460 Value ($000) $1,493 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 5,335 Value ($000) $1,513 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 5,361 Value ($000) $1,678 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 5,356 Value ($000) $1,295 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 4,952 Value ($000) $1,289 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 4,457 Value ($000) $1,365 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 3,871 Value ($000) $1,130 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 3,692 Value ($000) $1,491 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 3,494 Value ($000) $1,475 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 4,759 Value ($000) $1,615 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 3,000 Value ($000) $992 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 2,958 Value ($000) $933 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 2,726 Value ($000) $834 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 2,027 Value ($000) $567 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 2,129 Value ($000) $513 Avg Close $223.81 Range $203.55 - $248.95

Q2 2013

Shares 2,296 Value ($000) $494 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	7,819	$1	$163.37	$138.00 - $185.17
Q3 2025	4,341	$1	$135.17	$121.05 - $150.28
Q2 2025	3,432	$0	$124.60	$110.04 - $137.32
Q1 2025	3,828	$1	$142.96	$128.51 - $157.09
Q4 2024	3,439	$1	$168.67	$145.07 - $195.00
Q3 2024	3,207	$1	$209.21	$188.78 - $238.00
Q2 2024	3,379	$1	$217.32	$189.44 - $237.54
Q1 2024	3,769	$1	$234.20	$211.02 - $268.30
Q4 2023	5,477	$1	$245.62	$220.86 - $269.43
Q3 2023	5,759	$1	$267.47	$251.85 - $287.60
Q2 2023	15,176	$4	$297.86	$273.39 - $319.76
Q1 2023	10,564	$3	$276.70	$254.80 - $295.90
Q4 2022	5,486	$2	$282.44	$250.31 - $311.88
Q3 2022	5,842	$1,560	$212.38	$193.65 - $283.44
Q2 2022	6,073	$1,239	$204.43	$187.16 - $225.50
Q1 2022	5,791	$1,220	$217.46	$192.67 - $249.00
Q4 2021	6,502	$1,560	$257.12	$221.72 - $290.76
Q3 2021	7,152	$2,024	$327.75	$282.64 - $372.12
Q2 2021	6,496	$2,249	$302.94	$257.03 - $468.55
Q1 2021	6,898	$1,930	$269.69	$238.40 - $296.38
Q4 2020	6,188	$1,515	$259.08	$223.25 - $363.92
Q3 2020	7,273	$2,063	$278.91	$261.87 - $312.00
Q2 2020	8,303	$2,221	$300.59	$257.60 - $350.24
Q1 2020	6,674	$2,112	$303.47	$262.25 - $374.99
Q4 2019	6,372	$1,891	$277.46	$219.70 - $318.00
Q3 2019	4,918	$1,145	$232.85	$215.78 - $246.99
Q2 2019	5,683	$1,329	$230.90	$219.20 - $245.35
Q1 2019	6,133	$1,450	$314.89	$216.12 - $344.00
Q4 2018	6,046	$1,819	$319.14	$278.46 - $358.41
Q3 2018	5,842	$2,064	$344.30	$288.13 - $388.67
Q2 2018	5,332	$1,548	$281.15	$249.17 - $310.91
Q1 2018	5,185	$1,420	$310.41	$259.76 - $370.57
Q4 2017	5,785	$1,843	$320.80	$301.81 - $348.84
Q3 2017	5,948	$1,862	$296.11	$269.50 - $330.00
Q2 2017	5,428	$1,473	$264.42	$244.28 - $291.90
Q1 2017	5,460	$1,493	$282.75	$260.50 - $301.42
Q4 2016	5,335	$1,513	$296.43	$268.00 - $329.83
Q3 2016	5,361	$1,678	$296.18	$240.07 - $333.65
Q2 2016	5,356	$1,295	$263.54	$223.02 - $292.69
Q1 2016	4,952	$1,289	$264.15	$242.07 - $301.02
Q4 2015	4,457	$1,365	$287.35	$254.00 - $311.65
Q3 2015	3,871	$1,130	$330.23	$265.00 - $412.24
Q2 2015	3,692	$1,491	$401.33	$368.88 - $432.88
Q1 2015	3,494	$1,475	$394.14	$334.40 - $480.18
Q4 2014	4,759	$1,615	$323.51	$290.85 - $361.93
Q3 2014	3,000	$992	$329.72	$298.31 - $349.00
Q2 2014	2,958	$933	$300.97	$272.02 - $322.25
Q1 2014	2,726	$834	$317.43	$270.62 - $358.89
Q4 2013	2,027	$567	$258.65	$221.07 - $298.82
Q3 2013	2,129	$513	$223.81	$203.55 - $248.95
Q2 2013	2,296	$494	$213.68	$191.80 - $242.64