BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

OSSIAM's Holding History (CIK: 0001767471)

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

Q4 2025

Shares 62,263 Value ($000) $10,958 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 65,603 Value ($000) $9,190 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 50,487 Value ($000) $6,341 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 52,181 Value ($000) $7,140 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 50,363 Value ($000) $7,702 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 47,710 Value ($000) $9,248 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 40,951 Value ($000) $9,493 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 25,314 Value ($000) $5,458 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 28,620 Value ($000) $7,406 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 33,366 Value ($000) $8,575 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 53,646 Value ($000) $15,281 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 37,956 Value ($000) $10,553 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 37,829 Value ($000) $10,476 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 60,660 Value ($000) $16,196 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 64,462 Value ($000) $13,146 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 59,069 Value ($000) $12,440 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 70,113 Value ($000) $16,822 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 48,815 Value ($000) $13,814 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 40,826 Value ($000) $13,339 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 60,760 Value ($000) $16,998 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 45,504 Value ($000) $11,142 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 57,018 Value ($000) $16,175 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 55,126 Value ($000) $14,749 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 3,563 Value ($000) $1,127 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 288 Value ($000) $85 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 5,207 Value ($000) $1,212 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 127 Value ($000) $30 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 10,333 Value ($000) $2,443 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 8,955 Value ($000) $2,695 Avg Close $319.14 Range $278.46 - $358.41

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	62,263	$10,958	$163.37	$138.00 - $185.17
Q3 2025	65,603	$9,190	$135.17	$121.05 - $150.28
Q2 2025	50,487	$6,341	$124.60	$110.04 - $137.32
Q1 2025	52,181	$7,140	$142.96	$128.51 - $157.09
Q4 2024	50,363	$7,702	$168.67	$145.07 - $195.00
Q3 2024	47,710	$9,248	$209.21	$188.78 - $238.00
Q2 2024	40,951	$9,493	$217.32	$189.44 - $237.54
Q1 2024	25,314	$5,458	$234.20	$211.02 - $268.30
Q4 2023	28,620	$7,406	$245.62	$220.86 - $269.43
Q3 2023	33,366	$8,575	$267.47	$251.85 - $287.60
Q2 2023	53,646	$15,281	$297.86	$273.39 - $319.76
Q1 2023	37,956	$10,553	$276.70	$254.80 - $295.90
Q4 2022	37,829	$10,476	$282.44	$250.31 - $311.88
Q3 2022	60,660	$16,196	$212.38	$193.65 - $283.44
Q2 2022	64,462	$13,146	$204.43	$187.16 - $225.50
Q1 2022	59,069	$12,440	$217.46	$192.67 - $249.00
Q4 2021	70,113	$16,822	$257.12	$221.72 - $290.76
Q3 2021	48,815	$13,814	$327.75	$282.64 - $372.12
Q2 2021	40,826	$13,339	$302.94	$257.03 - $468.55
Q1 2021	60,760	$16,998	$269.69	$238.40 - $296.38
Q4 2020	45,504	$11,142	$259.08	$223.25 - $363.92
Q3 2020	57,018	$16,175	$278.91	$261.87 - $312.00
Q2 2020	55,126	$14,749	$300.59	$257.60 - $350.24
Q1 2020	3,563	$1,127	$303.47	$262.25 - $374.99
Q4 2019	288	$85	$277.46	$219.70 - $318.00
Q3 2019	5,207	$1,212	$232.85	$215.78 - $246.99
Q2 2019	127	$30	$230.90	$219.20 - $245.35
Q1 2019	10,333	$2,443	$314.89	$216.12 - $344.00
Q4 2018	8,955	$2,695	$319.14	$278.46 - $358.41