BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

DnB Asset Management AS's Holding History (CIK: 0001456670)

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

Q4 2025

Shares 28,729 Value ($000) $5,056 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 28,218 Value ($000) $3,953 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 27,427 Value ($000) $3,445 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 26,825 Value ($000) $3,671 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 47,441 Value ($000) $7,255 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 82,144 Value ($000) $15,923 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 61,226 Value ($000) $14,193 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 53,253 Value ($000) $11,483 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 55,464 Value ($000) $14,352 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 69,512 Value ($000) $17,865 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 63,069 Value ($000) $17,965 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 59,140 Value ($000) $16,443 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 42,673 Value ($000) $11,817 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 44,890 Value ($000) $11,985,630 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 42,601 Value ($000) $8,688,048 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 42,814 Value ($000) $9,016,628 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 45,954 Value ($000) $11,025,284 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 43,266 Value ($000) $12,243,845 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 41,178 Value ($000) $14,258,706 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 51,006 Value ($000) $14,268,929 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 175,332 Value ($000) $42,931,794 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 245,724 Value ($000) $69,706,984 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 151,679 Value ($000) $40,581,716 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 147,424 Value ($000) $46,642,005 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 105,029 Value ($000) $31,165,255 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 76,254 Value ($000) $17,753,456 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 63,318 Value ($000) $14,808,181 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 137,020 Value ($000) $32,388,788 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 104,244 Value ($000) $31,369,104 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 94,366 Value ($000) $33,340,451 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 97,339 Value ($000) $28,251,671 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 87,639 Value ($000) $23,997,311 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 43,019 Value ($000) $13,704,563 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 42,693 Value ($000) $13,368,032 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 38,313 Value ($000) $10,396,616 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 49,313 Value ($000) $13,483,160 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 36,398 Value ($000) $10,321,745 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 40,698 Value ($000) $12,739,695 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 39,898 Value ($000) $9,648,134 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 35,898 Value ($000) $9,344,967 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 17,798 Value ($000) $5,452,417 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 11,798 Value ($000) $3,442,774 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 11,698 Value ($000) $4,725,290 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 11,698 Value ($000) $4,939,364 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 12,198 Value ($000) $4,140,611 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 10,898 Value ($000) $3,605,167 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 10,298 Value ($000) $3,247,062 Avg Close $300.97 Range $272.02 - $322.25

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	28,729	$5,056	$163.37	$138.00 - $185.17
Q3 2025	28,218	$3,953	$135.17	$121.05 - $150.28
Q2 2025	27,427	$3,445	$124.60	$110.04 - $137.32
Q1 2025	26,825	$3,671	$142.96	$128.51 - $157.09
Q4 2024	47,441	$7,255	$168.67	$145.07 - $195.00
Q3 2024	82,144	$15,923	$209.21	$188.78 - $238.00
Q2 2024	61,226	$14,193	$217.32	$189.44 - $237.54
Q1 2024	53,253	$11,483	$234.20	$211.02 - $268.30
Q4 2023	55,464	$14,352	$245.62	$220.86 - $269.43
Q3 2023	69,512	$17,865	$267.47	$251.85 - $287.60
Q2 2023	63,069	$17,965	$297.86	$273.39 - $319.76
Q1 2023	59,140	$16,443	$276.70	$254.80 - $295.90
Q4 2022	42,673	$11,817	$282.44	$250.31 - $311.88
Q3 2022	44,890	$11,985,630	$212.38	$193.65 - $283.44
Q2 2022	42,601	$8,688,048	$204.43	$187.16 - $225.50
Q1 2022	42,814	$9,016,628	$217.46	$192.67 - $249.00
Q4 2021	45,954	$11,025,284	$257.12	$221.72 - $290.76
Q3 2021	43,266	$12,243,845	$327.75	$282.64 - $372.12
Q2 2021	41,178	$14,258,706	$302.94	$257.03 - $468.55
Q1 2021	51,006	$14,268,929	$269.69	$238.40 - $296.38
Q4 2020	175,332	$42,931,794	$259.08	$223.25 - $363.92
Q3 2020	245,724	$69,706,984	$278.91	$261.87 - $312.00
Q2 2020	151,679	$40,581,716	$300.59	$257.60 - $350.24
Q1 2020	147,424	$46,642,005	$303.47	$262.25 - $374.99
Q4 2019	105,029	$31,165,255	$277.46	$219.70 - $318.00
Q3 2019	76,254	$17,753,456	$232.85	$215.78 - $246.99
Q2 2019	63,318	$14,808,181	$230.90	$219.20 - $245.35
Q1 2019	137,020	$32,388,788	$314.89	$216.12 - $344.00
Q4 2018	104,244	$31,369,104	$319.14	$278.46 - $358.41
Q3 2018	94,366	$33,340,451	$344.30	$288.13 - $388.67
Q2 2018	97,339	$28,251,671	$281.15	$249.17 - $310.91
Q1 2018	87,639	$23,997,311	$310.41	$259.76 - $370.57
Q4 2017	43,019	$13,704,563	$320.80	$301.81 - $348.84
Q3 2017	42,693	$13,368,032	$296.11	$269.50 - $330.00
Q2 2017	38,313	$10,396,616	$264.42	$244.28 - $291.90
Q1 2017	49,313	$13,483,160	$282.75	$260.50 - $301.42
Q4 2016	36,398	$10,321,745	$296.43	$268.00 - $329.83
Q3 2016	40,698	$12,739,695	$296.18	$240.07 - $333.65
Q2 2016	39,898	$9,648,134	$263.54	$223.02 - $292.69
Q1 2016	35,898	$9,344,967	$264.15	$242.07 - $301.02
Q4 2015	17,798	$5,452,417	$287.35	$254.00 - $311.65
Q3 2015	11,798	$3,442,774	$330.23	$265.00 - $412.24
Q2 2015	11,698	$4,725,290	$401.33	$368.88 - $432.88
Q1 2015	11,698	$4,939,364	$394.14	$334.40 - $480.18
Q4 2014	12,198	$4,140,611	$323.51	$290.85 - $361.93
Q3 2014	10,898	$3,605,167	$329.72	$298.31 - $349.00
Q2 2014	10,298	$3,247,062	$300.97	$272.02 - $322.25