BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Private Advisor Group, LLC's Holding History (CIK: 0001567755)

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

Q4 2025

Shares 6,113 Value ($000) $1,076 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 4,467 Value ($000) $626 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 4,238 Value ($000) $532 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 4,556 Value ($000) $623 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 5,897 Value ($000) $902 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 9,645 Value ($000) $1,870 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 8,721 Value ($000) $2,022 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 4,833 Value ($000) $1,042 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 4,609 Value ($000) $1,193 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 4,629 Value ($000) $1,190 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 4,532 Value ($000) $1,263 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 4,521 Value ($000) $1,257 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 6,045 Value ($000) $751 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 4,258 Value ($000) $1,137 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 6,496 Value ($000) $1,325 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 5,707 Value ($000) $1,202 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 6,147 Value ($000) $1,475 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 42,461 Value ($000) $12,017 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 7,785 Value ($000) $2,696 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 7,681 Value ($000) $2,149 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 6,317 Value ($000) $1,547 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 6,608 Value ($000) $1,832 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 7,325 Value ($000) $1,960 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 6,305 Value ($000) $1,995 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 5,933 Value ($000) $1,761 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 10,167 Value ($000) $2,640 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 5,259 Value ($000) $1,230 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 5,106 Value ($000) $1,212 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 5,003 Value ($000) $1,503 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 7,236 Value ($000) $2,557 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 22,426 Value ($000) $6,528 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 2,333 Value ($000) $642 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 5,116 Value ($000) $1,677 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 6,827 Value ($000) $2,234 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 5,459 Value ($000) $1,493 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 6,029 Value ($000) $1,632 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 5,809 Value ($000) $1,666 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 5,270 Value ($000) $1,642 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 5,402 Value ($000) $1,337 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 3,840 Value ($000) $802 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 3,271 Value ($000) $1,002 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 2,668 Value ($000) $779 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 2,495 Value ($000) $1,008 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 2,352 Value ($000) $993 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 2,267 Value ($000) $770 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 1,715 Value ($000) $567 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 1,319 Value ($000) $416 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 1,250 Value ($000) $382 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 924 Value ($000) $258 Avg Close $258.65 Range $221.07 - $298.82

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	6,113	$1,076	$163.37	$138.00 - $185.17
Q3 2025	4,467	$626	$135.17	$121.05 - $150.28
Q2 2025	4,238	$532	$124.60	$110.04 - $137.32
Q1 2025	4,556	$623	$142.96	$128.51 - $157.09
Q4 2024	5,897	$902	$168.67	$145.07 - $195.00
Q3 2024	9,645	$1,870	$209.21	$188.78 - $238.00
Q2 2024	8,721	$2,022	$217.32	$189.44 - $237.54
Q1 2024	4,833	$1,042	$234.20	$211.02 - $268.30
Q4 2023	4,609	$1,193	$245.62	$220.86 - $269.43
Q3 2023	4,629	$1,190	$267.47	$251.85 - $287.60
Q2 2023	4,532	$1,263	$297.86	$273.39 - $319.76
Q1 2023	4,521	$1,257	$276.70	$254.80 - $295.90
Q4 2022	6,045	$751	$282.44	$250.31 - $311.88
Q3 2022	4,258	$1,137	$212.38	$193.65 - $283.44
Q2 2022	6,496	$1,325	$204.43	$187.16 - $225.50
Q1 2022	5,707	$1,202	$217.46	$192.67 - $249.00
Q4 2021	6,147	$1,475	$257.12	$221.72 - $290.76
Q3 2021	42,461	$12,017	$327.75	$282.64 - $372.12
Q2 2021	7,785	$2,696	$302.94	$257.03 - $468.55
Q1 2021	7,681	$2,149	$269.69	$238.40 - $296.38
Q4 2020	6,317	$1,547	$259.08	$223.25 - $363.92
Q3 2020	6,608	$1,832	$278.91	$261.87 - $312.00
Q2 2020	7,325	$1,960	$300.59	$257.60 - $350.24
Q1 2020	6,305	$1,995	$303.47	$262.25 - $374.99
Q4 2019	5,933	$1,761	$277.46	$219.70 - $318.00
Q3 2019	10,167	$2,640	$232.85	$215.78 - $246.99
Q2 2019	5,259	$1,230	$230.90	$219.20 - $245.35
Q1 2019	5,106	$1,212	$314.89	$216.12 - $344.00
Q4 2018	5,003	$1,503	$319.14	$278.46 - $358.41
Q3 2018	7,236	$2,557	$344.30	$288.13 - $388.67
Q2 2018	22,426	$6,528	$281.15	$249.17 - $310.91
Q1 2018	2,333	$642	$310.41	$259.76 - $370.57
Q4 2017	5,116	$1,677	$320.80	$301.81 - $348.84
Q3 2017	6,827	$2,234	$296.11	$269.50 - $330.00
Q2 2017	5,459	$1,493	$264.42	$244.28 - $291.90
Q1 2017	6,029	$1,632	$282.75	$260.50 - $301.42
Q4 2016	5,809	$1,666	$296.43	$268.00 - $329.83
Q3 2016	5,270	$1,642	$296.18	$240.07 - $333.65
Q2 2016	5,402	$1,337	$263.54	$223.02 - $292.69
Q1 2016	3,840	$802	$264.15	$242.07 - $301.02
Q4 2015	3,271	$1,002	$287.35	$254.00 - $311.65
Q3 2015	2,668	$779	$330.23	$265.00 - $412.24
Q2 2015	2,495	$1,008	$401.33	$368.88 - $432.88
Q1 2015	2,352	$993	$394.14	$334.40 - $480.18
Q4 2014	2,267	$770	$323.51	$290.85 - $361.93
Q3 2014	1,715	$567	$329.72	$298.31 - $349.00
Q2 2014	1,319	$416	$300.97	$272.02 - $322.25
Q1 2014	1,250	$382	$317.43	$270.62 - $358.89
Q4 2013	924	$258	$258.65	$221.07 - $298.82