BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

DekaBank Deutsche Girozentrale's Holding History (CIK: 0001456228)

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

Q4 2025

Shares 108,721 Value ($000) $26 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 108,721 Value ($000) $15 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 108,721 Value ($000) $14 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 109,198 Value ($000) $15 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 108,721 Value ($000) $16 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 108,721 Value ($000) $21 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 106,968 Value ($000) $24 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 109,198 Value ($000) $23 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 283,268 Value ($000) $73 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 284,129 Value ($000) $73 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 238,599 Value ($000) $67 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 234,282 Value ($000) $64 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 150,360 Value ($000) $41 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 152,824 Value ($000) $40,251 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 173,051 Value ($000) $35,151 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 176,544 Value ($000) $37,353 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 188,527 Value ($000) $46,537 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 124,601 Value ($000) $35,508 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 191,945 Value ($000) $65,994 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 214,943 Value ($000) $59,298 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 214,351 Value ($000) $52,435 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 236,254 Value ($000) $66,042 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 72,997 Value ($000) $18,895 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 64,601 Value ($000) $20,522 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 73,612 Value ($000) $22,006 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 137,911 Value ($000) $31,887 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 195,272 Value ($000) $46,900 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 180,753 Value ($000) $64,061 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 168,779 Value ($000) $49,887 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 180,753 Value ($000) $64,061 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 190,886 Value ($000) $55,343 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 236,265 Value ($000) $64,531 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 217,352 Value ($000) $64,070 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 217,152 Value ($000) $64,011 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 188,744 Value ($000) $51,528 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 192,118 Value ($000) $51,870 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 189,676 Value ($000) $54,846 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 204,849 Value ($000) $62,732 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 163,474 Value ($000) $39,072 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 194,401 Value ($000) $49,439 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 186,206 Value ($000) $57,720 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 167,161 Value ($000) $47,471 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 153,725 Value ($000) $62,035 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 146,418 Value ($000) $62,983 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 144,963 Value ($000) $49,506 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 146,655 Value ($000) $48,429 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 135,911 Value ($000) $43,106 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 155,553 Value ($000) $46,061 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 162,519 Value ($000) $45,244 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 152,499 Value ($000) $36,905 Avg Close $223.81 Range $203.55 - $248.95

Q2 2013

Shares 149,894 Value ($000) $33,228 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	108,721	$26	$163.37	$138.00 - $185.17
Q3 2025	108,721	$15	$135.17	$121.05 - $150.28
Q2 2025	108,721	$14	$124.60	$110.04 - $137.32
Q1 2025	109,198	$15	$142.96	$128.51 - $157.09
Q4 2024	108,721	$16	$168.67	$145.07 - $195.00
Q3 2024	108,721	$21	$209.21	$188.78 - $238.00
Q2 2024	106,968	$24	$217.32	$189.44 - $237.54
Q1 2024	109,198	$23	$234.20	$211.02 - $268.30
Q4 2023	283,268	$73	$245.62	$220.86 - $269.43
Q3 2023	284,129	$73	$267.47	$251.85 - $287.60
Q2 2023	238,599	$67	$297.86	$273.39 - $319.76
Q1 2023	234,282	$64	$276.70	$254.80 - $295.90
Q4 2022	150,360	$41	$282.44	$250.31 - $311.88
Q3 2022	152,824	$40,251	$212.38	$193.65 - $283.44
Q2 2022	173,051	$35,151	$204.43	$187.16 - $225.50
Q1 2022	176,544	$37,353	$217.46	$192.67 - $249.00
Q4 2021	188,527	$46,537	$257.12	$221.72 - $290.76
Q3 2021	124,601	$35,508	$327.75	$282.64 - $372.12
Q2 2021	191,945	$65,994	$302.94	$257.03 - $468.55
Q1 2021	214,943	$59,298	$269.69	$238.40 - $296.38
Q4 2020	214,351	$52,435	$259.08	$223.25 - $363.92
Q3 2020	236,254	$66,042	$278.91	$261.87 - $312.00
Q2 2020	72,997	$18,895	$300.59	$257.60 - $350.24
Q1 2020	64,601	$20,522	$303.47	$262.25 - $374.99
Q4 2019	73,612	$22,006	$277.46	$219.70 - $318.00
Q3 2019	137,911	$31,887	$232.85	$215.78 - $246.99
Q2 2019	195,272	$46,900	$230.90	$219.20 - $245.35
Q1 2019	180,753	$64,061	$314.89	$216.12 - $344.00
Q4 2018	168,779	$49,887	$319.14	$278.46 - $358.41
Q3 2018	180,753	$64,061	$344.30	$288.13 - $388.67
Q2 2018	190,886	$55,343	$281.15	$249.17 - $310.91
Q1 2018	236,265	$64,531	$310.41	$259.76 - $370.57
Q4 2017	217,352	$64,070	$320.80	$301.81 - $348.84
Q3 2017	217,152	$64,011	$296.11	$269.50 - $330.00
Q2 2017	188,744	$51,528	$264.42	$244.28 - $291.90
Q1 2017	192,118	$51,870	$282.75	$260.50 - $301.42
Q4 2016	189,676	$54,846	$296.43	$268.00 - $329.83
Q3 2016	204,849	$62,732	$296.18	$240.07 - $333.65
Q2 2016	163,474	$39,072	$263.54	$223.02 - $292.69
Q1 2016	194,401	$49,439	$264.15	$242.07 - $301.02
Q4 2015	186,206	$57,720	$287.35	$254.00 - $311.65
Q3 2015	167,161	$47,471	$330.23	$265.00 - $412.24
Q2 2015	153,725	$62,035	$401.33	$368.88 - $432.88
Q1 2015	146,418	$62,983	$394.14	$334.40 - $480.18
Q4 2014	144,963	$49,506	$323.51	$290.85 - $361.93
Q3 2014	146,655	$48,429	$329.72	$298.31 - $349.00
Q2 2014	135,911	$43,106	$300.97	$272.02 - $322.25
Q1 2014	155,553	$46,061	$317.43	$270.62 - $358.89
Q4 2013	162,519	$45,244	$258.65	$221.07 - $298.82
Q3 2013	152,499	$36,905	$223.81	$203.55 - $248.95
Q2 2013	149,894	$33,228	$213.68	$191.80 - $242.64