BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Janney Montgomery Scott LLC's Holding History (CIK: 0001329948)

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

Q4 2025

Shares 11,775 Value ($000) $2 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 18,703 Value ($000) $3 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 19,099 Value ($000) $2 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 17,941 Value ($000) $2 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 12,321 Value ($000) $2 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 13,539 Value ($000) $3 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 14,926 Value ($000) $3 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 15,970 Value ($000) $3 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 16,924 Value ($000) $4 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 18,272 Value ($000) $5 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 30,549 Value ($000) $9 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 18,678 Value ($000) $5 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 18,798 Value ($000) $5 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 24,190 Value ($000) $6,459 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 26,960 Value ($000) $5,481 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 32,258 Value ($000) $6,794 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 27,543 Value ($000) $6,608 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 29,794 Value ($000) $8,431 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 29,693 Value ($000) $10,282 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 32,501 Value ($000) $9,092 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 31,617 Value ($000) $7,742 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 30,690 Value ($000) $8,706 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 31,593 Value ($000) $8,453 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 32,468 Value ($000) $10,272 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 33,596 Value ($000) $9,969 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 36,641 Value ($000) $8,531 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 37,160 Value ($000) $8,691 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 47,738 Value ($000) $11,284 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 48,900 Value ($000) $14,715 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 50,622 Value ($000) $17,885 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 45,191 Value ($000) $13,116 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 36,962 Value ($000) $10,121 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 36,475 Value ($000) $11,620 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 35,750 Value ($000) $11,194 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 36,502 Value ($000) $9,905 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 33,829 Value ($000) $9,250 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 32,771 Value ($000) $9,293 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 28,045 Value ($000) $8,779 Avg Close $296.18 Range $240.07 - $333.65

Q1 2016

Shares 25,422 Value ($000) $6,618 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 14,125 Value ($000) $4,327 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 13,965 Value ($000) $4,075 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 13,073 Value ($000) $5,280,708 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 12,360 Value ($000) $5,219 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 11,668 Value ($000) $3,960,703 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 9,978 Value ($000) $3,300,822 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 9,843 Value ($000) $3,103,596 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 5,145 Value ($000) $1,573,701 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 5,208 Value ($000) $1,456,011 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 4,919 Value ($000) $1,184,298 Avg Close $223.81 Range $203.55 - $248.95

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	11,775	$2	$163.37	$138.00 - $185.17
Q3 2025	18,703	$3	$135.17	$121.05 - $150.28
Q2 2025	19,099	$2	$124.60	$110.04 - $137.32
Q1 2025	17,941	$2	$142.96	$128.51 - $157.09
Q4 2024	12,321	$2	$168.67	$145.07 - $195.00
Q3 2024	13,539	$3	$209.21	$188.78 - $238.00
Q2 2024	14,926	$3	$217.32	$189.44 - $237.54
Q1 2024	15,970	$3	$234.20	$211.02 - $268.30
Q4 2023	16,924	$4	$245.62	$220.86 - $269.43
Q3 2023	18,272	$5	$267.47	$251.85 - $287.60
Q2 2023	30,549	$9	$297.86	$273.39 - $319.76
Q1 2023	18,678	$5	$276.70	$254.80 - $295.90
Q4 2022	18,798	$5	$282.44	$250.31 - $311.88
Q3 2022	24,190	$6,459	$212.38	$193.65 - $283.44
Q2 2022	26,960	$5,481	$204.43	$187.16 - $225.50
Q1 2022	32,258	$6,794	$217.46	$192.67 - $249.00
Q4 2021	27,543	$6,608	$257.12	$221.72 - $290.76
Q3 2021	29,794	$8,431	$327.75	$282.64 - $372.12
Q2 2021	29,693	$10,282	$302.94	$257.03 - $468.55
Q1 2021	32,501	$9,092	$269.69	$238.40 - $296.38
Q4 2020	31,617	$7,742	$259.08	$223.25 - $363.92
Q3 2020	30,690	$8,706	$278.91	$261.87 - $312.00
Q2 2020	31,593	$8,453	$300.59	$257.60 - $350.24
Q1 2020	32,468	$10,272	$303.47	$262.25 - $374.99
Q4 2019	33,596	$9,969	$277.46	$219.70 - $318.00
Q3 2019	36,641	$8,531	$232.85	$215.78 - $246.99
Q2 2019	37,160	$8,691	$230.90	$219.20 - $245.35
Q1 2019	47,738	$11,284	$314.89	$216.12 - $344.00
Q4 2018	48,900	$14,715	$319.14	$278.46 - $358.41
Q3 2018	50,622	$17,885	$344.30	$288.13 - $388.67
Q2 2018	45,191	$13,116	$281.15	$249.17 - $310.91
Q1 2018	36,962	$10,121	$310.41	$259.76 - $370.57
Q4 2017	36,475	$11,620	$320.80	$301.81 - $348.84
Q3 2017	35,750	$11,194	$296.11	$269.50 - $330.00
Q2 2017	36,502	$9,905	$264.42	$244.28 - $291.90
Q1 2017	33,829	$9,250	$282.75	$260.50 - $301.42
Q4 2016	32,771	$9,293	$296.43	$268.00 - $329.83
Q3 2016	28,045	$8,779	$296.18	$240.07 - $333.65
Q1 2016	25,422	$6,618	$264.15	$242.07 - $301.02
Q4 2015	14,125	$4,327	$287.35	$254.00 - $311.65
Q3 2015	13,965	$4,075	$330.23	$265.00 - $412.24
Q2 2015	13,073	$5,280,708	$401.33	$368.88 - $432.88
Q1 2015	12,360	$5,219	$394.14	$334.40 - $480.18
Q4 2014	11,668	$3,960,703	$323.51	$290.85 - $361.93
Q3 2014	9,978	$3,300,822	$329.72	$298.31 - $349.00
Q2 2014	9,843	$3,103,596	$300.97	$272.02 - $322.25
Q1 2014	5,145	$1,573,701	$317.43	$270.62 - $358.89
Q4 2013	5,208	$1,456,011	$258.65	$221.07 - $298.82
Q3 2013	4,919	$1,184,298	$223.81	$203.55 - $248.95