BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

SECTOR GAMMA AS's Holding History (CIK: 0001475373)

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

Q4 2025

Shares 85,475 Value ($000) $15,043 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 75,475 Value ($000) $10,573 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 50,639 Value ($000) $6,360 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 18,639 Value ($000) $2,551 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 29,000 Value ($000) $4,435 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 35,166 Value ($000) $6,817 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 43,985 Value ($000) $10,197 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 59,698 Value ($000) $12,873 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 102,234 Value ($000) $26,455 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 104,286 Value ($000) $26,803 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 95,757 Value ($000) $27,276 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 87,836 Value ($000) $24,421 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 70,039 Value ($000) $19,395 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 110,230 Value ($000) $29,431 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 92,497 Value ($000) $18,864 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 81,945 Value ($000) $17,258 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 66,599 Value ($000) $15,978 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 83,319 Value ($000) $23,578 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 73,043 Value ($000) $25,293 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 49,260 Value ($000) $13,780 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 65,585 Value ($000) $16,059 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 67,343 Value ($000) $19,104 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 64,220 Value ($000) $17,182 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 75,120 Value ($000) $23,766 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 102,219 Value ($000) $30,331 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 52,426 Value ($000) $12,206 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 115,126 Value ($000) $26,925 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 150,200 Value ($000) $35,504 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 33,100 Value ($000) $9,960 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 36,000 Value ($000) $12,719 Avg Close $344.30 Range $288.13 - $388.67

Q4 2017

Shares 65,800 Value ($000) $20,962 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 84,000 Value ($000) $26,302 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 57,800 Value ($000) $15,685 Avg Close $264.42 Range $244.28 - $291.90

Q3 2016

Shares 71,400 Value ($000) $21,107 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 96,690 Value ($000) $23,382 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 81,910 Value ($000) $21,323 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 75,300 Value ($000) $23,068 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 28,600 Value ($000) $8,346 Avg Close $330.23 Range $265.00 - $412.24

Q4 2013

Shares 20,000 Value ($000) $5,591 Avg Close $258.65 Range $221.07 - $298.82

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	85,475	$15,043	$163.37	$138.00 - $185.17
Q3 2025	75,475	$10,573	$135.17	$121.05 - $150.28
Q2 2025	50,639	$6,360	$124.60	$110.04 - $137.32
Q1 2025	18,639	$2,551	$142.96	$128.51 - $157.09
Q4 2024	29,000	$4,435	$168.67	$145.07 - $195.00
Q3 2024	35,166	$6,817	$209.21	$188.78 - $238.00
Q2 2024	43,985	$10,197	$217.32	$189.44 - $237.54
Q1 2024	59,698	$12,873	$234.20	$211.02 - $268.30
Q4 2023	102,234	$26,455	$245.62	$220.86 - $269.43
Q3 2023	104,286	$26,803	$267.47	$251.85 - $287.60
Q2 2023	95,757	$27,276	$297.86	$273.39 - $319.76
Q1 2023	87,836	$24,421	$276.70	$254.80 - $295.90
Q4 2022	70,039	$19,395	$282.44	$250.31 - $311.88
Q3 2022	110,230	$29,431	$212.38	$193.65 - $283.44
Q2 2022	92,497	$18,864	$204.43	$187.16 - $225.50
Q1 2022	81,945	$17,258	$217.46	$192.67 - $249.00
Q4 2021	66,599	$15,978	$257.12	$221.72 - $290.76
Q3 2021	83,319	$23,578	$327.75	$282.64 - $372.12
Q2 2021	73,043	$25,293	$302.94	$257.03 - $468.55
Q1 2021	49,260	$13,780	$269.69	$238.40 - $296.38
Q4 2020	65,585	$16,059	$259.08	$223.25 - $363.92
Q3 2020	67,343	$19,104	$278.91	$261.87 - $312.00
Q2 2020	64,220	$17,182	$300.59	$257.60 - $350.24
Q1 2020	75,120	$23,766	$303.47	$262.25 - $374.99
Q4 2019	102,219	$30,331	$277.46	$219.70 - $318.00
Q3 2019	52,426	$12,206	$232.85	$215.78 - $246.99
Q2 2019	115,126	$26,925	$230.90	$219.20 - $245.35
Q1 2019	150,200	$35,504	$314.89	$216.12 - $344.00
Q4 2018	33,100	$9,960	$319.14	$278.46 - $358.41
Q3 2018	36,000	$12,719	$344.30	$288.13 - $388.67
Q4 2017	65,800	$20,962	$320.80	$301.81 - $348.84
Q3 2017	84,000	$26,302	$296.11	$269.50 - $330.00
Q2 2017	57,800	$15,685	$264.42	$244.28 - $291.90
Q3 2016	71,400	$21,107	$296.18	$240.07 - $333.65
Q2 2016	96,690	$23,382	$263.54	$223.02 - $292.69
Q1 2016	81,910	$21,323	$264.15	$242.07 - $301.02
Q4 2015	75,300	$23,068	$287.35	$254.00 - $311.65
Q3 2015	28,600	$8,346	$330.23	$265.00 - $412.24
Q4 2013	20,000	$5,591	$258.65	$221.07 - $298.82