BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Sumitomo Mitsui Trust Holdings, Inc.'s Holding History (CIK: 0001475365)

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

Q4 2025

Shares 370,627 Value ($000) $65,227 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 415,609 Value ($000) $58,219 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 414,830 Value ($000) $52,099 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 416,960 Value ($000) $57,057 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 391,496 Value ($000) $59,868 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 370,128 Value ($000) $71,746 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 360,874 Value ($000) $83,658 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 386,482 Value ($000) $83,337 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 383,102 Value ($000) $99,135 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 378,509 Value ($000) $97,281 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 380,241 Value ($000) $108,312 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 441,497 Value ($000) $122,749 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 519,795 Value ($000) $143,942 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 569,385 Value ($000) $152,026 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 648,490 Value ($000) $132,253 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 531,400 Value ($000) $111,913 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 552,001 Value ($000) $132,436 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 465,619 Value ($000) $131,766 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 494,725 Value ($000) $171,308 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 532,392 Value ($000) $148,937 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 602,271 Value ($000) $147,472 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 674,078 Value ($000) $191,222 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 763,528 Value ($000) $204,282 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 797,597 Value ($000) $252,344 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 759,460 Value ($000) $225,355 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 851,574 Value ($000) $198,263 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 787,636 Value ($000) $184,204 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 790,613 Value ($000) $186,885 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 782,565 Value ($000) $229,698 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 680,645 Value ($000) $240,479 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 667,453 Value ($000) $193,722 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 644,595 Value ($000) $176,503 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 617,461 Value ($000) $196,705 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 610,456 Value ($000) $191,146 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 622,430 Value ($000) $168,903 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 612,227 Value ($000) $167,395 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 611,690 Value ($000) $173,463 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 621,630 Value ($000) $194,589 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 620,556 Value ($000) $150,063 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 677,502 Value ($000) $176,367 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 716,090 Value ($000) $220,799 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 717,264 Value ($000) $209,305 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 611,557 Value ($000) $247,032 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 614,791 Value ($000) $259,589 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 590,408 Value ($000) $202,032 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 594,733 Value ($000) $196,744 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 570,271 Value ($000) $179,812 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 586,565 Value ($000) $179,413 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 604,124 Value ($000) $168,895 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 635,566 Value ($000) $153,019 Avg Close $223.81 Range $203.55 - $248.95

Q2 2013

Shares 636,384 Value ($000) $136,950 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	370,627	$65,227	$163.37	$138.00 - $185.17
Q3 2025	415,609	$58,219	$135.17	$121.05 - $150.28
Q2 2025	414,830	$52,099	$124.60	$110.04 - $137.32
Q1 2025	416,960	$57,057	$142.96	$128.51 - $157.09
Q4 2024	391,496	$59,868	$168.67	$145.07 - $195.00
Q3 2024	370,128	$71,746	$209.21	$188.78 - $238.00
Q2 2024	360,874	$83,658	$217.32	$189.44 - $237.54
Q1 2024	386,482	$83,337	$234.20	$211.02 - $268.30
Q4 2023	383,102	$99,135	$245.62	$220.86 - $269.43
Q3 2023	378,509	$97,281	$267.47	$251.85 - $287.60
Q2 2023	380,241	$108,312	$297.86	$273.39 - $319.76
Q1 2023	441,497	$122,749	$276.70	$254.80 - $295.90
Q4 2022	519,795	$143,942	$282.44	$250.31 - $311.88
Q3 2022	569,385	$152,026	$212.38	$193.65 - $283.44
Q2 2022	648,490	$132,253	$204.43	$187.16 - $225.50
Q1 2022	531,400	$111,913	$217.46	$192.67 - $249.00
Q4 2021	552,001	$132,436	$257.12	$221.72 - $290.76
Q3 2021	465,619	$131,766	$327.75	$282.64 - $372.12
Q2 2021	494,725	$171,308	$302.94	$257.03 - $468.55
Q1 2021	532,392	$148,937	$269.69	$238.40 - $296.38
Q4 2020	602,271	$147,472	$259.08	$223.25 - $363.92
Q3 2020	674,078	$191,222	$278.91	$261.87 - $312.00
Q2 2020	763,528	$204,282	$300.59	$257.60 - $350.24
Q1 2020	797,597	$252,344	$303.47	$262.25 - $374.99
Q4 2019	759,460	$225,355	$277.46	$219.70 - $318.00
Q3 2019	851,574	$198,263	$232.85	$215.78 - $246.99
Q2 2019	787,636	$184,204	$230.90	$219.20 - $245.35
Q1 2019	790,613	$186,885	$314.89	$216.12 - $344.00
Q4 2018	782,565	$229,698	$319.14	$278.46 - $358.41
Q3 2018	680,645	$240,479	$344.30	$288.13 - $388.67
Q2 2018	667,453	$193,722	$281.15	$249.17 - $310.91
Q1 2018	644,595	$176,503	$310.41	$259.76 - $370.57
Q4 2017	617,461	$196,705	$320.80	$301.81 - $348.84
Q3 2017	610,456	$191,146	$296.11	$269.50 - $330.00
Q2 2017	622,430	$168,903	$264.42	$244.28 - $291.90
Q1 2017	612,227	$167,395	$282.75	$260.50 - $301.42
Q4 2016	611,690	$173,463	$296.43	$268.00 - $329.83
Q3 2016	621,630	$194,589	$296.18	$240.07 - $333.65
Q2 2016	620,556	$150,063	$263.54	$223.02 - $292.69
Q1 2016	677,502	$176,367	$264.15	$242.07 - $301.02
Q4 2015	716,090	$220,799	$287.35	$254.00 - $311.65
Q3 2015	717,264	$209,305	$330.23	$265.00 - $412.24
Q2 2015	611,557	$247,032	$401.33	$368.88 - $432.88
Q1 2015	614,791	$259,589	$394.14	$334.40 - $480.18
Q4 2014	590,408	$202,032	$323.51	$290.85 - $361.93
Q3 2014	594,733	$196,744	$329.72	$298.31 - $349.00
Q2 2014	570,271	$179,812	$300.97	$272.02 - $322.25
Q1 2014	586,565	$179,413	$317.43	$270.62 - $358.89
Q4 2013	604,124	$168,895	$258.65	$221.07 - $298.82
Q3 2013	635,566	$153,019	$223.81	$203.55 - $248.95
Q2 2013	636,384	$136,950	$213.68	$191.80 - $242.64