BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

WELLS FARGO & COMPANY/MN's Holding History (CIK: 0000072971)

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

Q4 2025

Shares 119,338 Value ($000) $21,002 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 176,264 Value ($000) $24,691 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 165,962 Value ($000) $20,843 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 154,485 Value ($000) $21,140 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 111,043 Value ($000) $16,981 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 206,470 Value ($000) $40,022 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 247,760 Value ($000) $57,436 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 221,076 Value ($000) $47,670 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 231,451 Value ($000) $59,892 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 214,673 Value ($000) $55,173 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 249,828 Value ($000) $71,164 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 255,022 Value ($000) $70,904 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 266,108 Value ($000) $73,691 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 318,978 Value ($000) $85,168 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 359,079 Value ($000) $73,230 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 439,730 Value ($000) $92,608 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 400,979 Value ($000) $96,204 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 573,576 Value ($000) $162,317 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 549,636 Value ($000) $190,322 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 580,736 Value ($000) $162,461 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 598,679 Value ($000) $146,592 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 752,373 Value ($000) $213,432 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 744,724 Value ($000) $199,251 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 702,537 Value ($000) $222,269 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 834,205 Value ($000) $247,534 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 847,418 Value ($000) $197,295 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 850,256 Value ($000) $198,849 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 951,588 Value ($000) $224,936 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 1,056,569 Value ($000) $317,944 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 1,006,100 Value ($000) $355,465 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 1,048,627 Value ($000) $304,354 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 1,014,779 Value ($000) $277,867 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 1,150,477 Value ($000) $366,507 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 975,992 Value ($000) $305,603 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 1,188,575 Value ($000) $322,532 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 1,145,496 Value ($000) $313,202 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 963,151 Value ($000) $273,131 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 1,085,887 Value ($000) $339,914 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 1,074,590 Value ($000) $259,858 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 835,033 Value ($000) $217,377 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 779,225 Value ($000) $238,715 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 1,281,252 Value ($000) $373,881 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 2,229,360 Value ($000) $900,532 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 2,408,190 Value ($000) $1,016,800 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 2,711,313 Value ($000) $920,358 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 2,692,471 Value ($000) $890,641 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 2,506,052 Value ($000) $790,210 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 2,409,971 Value ($000) $737,116 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 2,134,062 Value ($000) $596,624 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 1,979,560 Value ($000) $476,597 Avg Close $223.81 Range $203.55 - $248.95

Q2 2013

Shares 1,932,775 Value ($000) $415,933 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	119,338	$21,002	$163.37	$138.00 - $185.17
Q3 2025	176,264	$24,691	$135.17	$121.05 - $150.28
Q2 2025	165,962	$20,843	$124.60	$110.04 - $137.32
Q1 2025	154,485	$21,140	$142.96	$128.51 - $157.09
Q4 2024	111,043	$16,981	$168.67	$145.07 - $195.00
Q3 2024	206,470	$40,022	$209.21	$188.78 - $238.00
Q2 2024	247,760	$57,436	$217.32	$189.44 - $237.54
Q1 2024	221,076	$47,670	$234.20	$211.02 - $268.30
Q4 2023	231,451	$59,892	$245.62	$220.86 - $269.43
Q3 2023	214,673	$55,173	$267.47	$251.85 - $287.60
Q2 2023	249,828	$71,164	$297.86	$273.39 - $319.76
Q1 2023	255,022	$70,904	$276.70	$254.80 - $295.90
Q4 2022	266,108	$73,691	$282.44	$250.31 - $311.88
Q3 2022	318,978	$85,168	$212.38	$193.65 - $283.44
Q2 2022	359,079	$73,230	$204.43	$187.16 - $225.50
Q1 2022	439,730	$92,608	$217.46	$192.67 - $249.00
Q4 2021	400,979	$96,204	$257.12	$221.72 - $290.76
Q3 2021	573,576	$162,317	$327.75	$282.64 - $372.12
Q2 2021	549,636	$190,322	$302.94	$257.03 - $468.55
Q1 2021	580,736	$162,461	$269.69	$238.40 - $296.38
Q4 2020	598,679	$146,592	$259.08	$223.25 - $363.92
Q3 2020	752,373	$213,432	$278.91	$261.87 - $312.00
Q2 2020	744,724	$199,251	$300.59	$257.60 - $350.24
Q1 2020	702,537	$222,269	$303.47	$262.25 - $374.99
Q4 2019	834,205	$247,534	$277.46	$219.70 - $318.00
Q3 2019	847,418	$197,295	$232.85	$215.78 - $246.99
Q2 2019	850,256	$198,849	$230.90	$219.20 - $245.35
Q1 2019	951,588	$224,936	$314.89	$216.12 - $344.00
Q4 2018	1,056,569	$317,944	$319.14	$278.46 - $358.41
Q3 2018	1,006,100	$355,465	$344.30	$288.13 - $388.67
Q2 2018	1,048,627	$304,354	$281.15	$249.17 - $310.91
Q1 2018	1,014,779	$277,867	$310.41	$259.76 - $370.57
Q4 2017	1,150,477	$366,507	$320.80	$301.81 - $348.84
Q3 2017	975,992	$305,603	$296.11	$269.50 - $330.00
Q2 2017	1,188,575	$322,532	$264.42	$244.28 - $291.90
Q1 2017	1,145,496	$313,202	$282.75	$260.50 - $301.42
Q4 2016	963,151	$273,131	$296.43	$268.00 - $329.83
Q3 2016	1,085,887	$339,914	$296.18	$240.07 - $333.65
Q2 2016	1,074,590	$259,858	$263.54	$223.02 - $292.69
Q1 2016	835,033	$217,377	$264.15	$242.07 - $301.02
Q4 2015	779,225	$238,715	$287.35	$254.00 - $311.65
Q3 2015	1,281,252	$373,881	$330.23	$265.00 - $412.24
Q2 2015	2,229,360	$900,532	$401.33	$368.88 - $432.88
Q1 2015	2,408,190	$1,016,800	$394.14	$334.40 - $480.18
Q4 2014	2,711,313	$920,358	$323.51	$290.85 - $361.93
Q3 2014	2,692,471	$890,641	$329.72	$298.31 - $349.00
Q2 2014	2,506,052	$790,210	$300.97	$272.02 - $322.25
Q1 2014	2,409,971	$737,116	$317.43	$270.62 - $358.89
Q4 2013	2,134,062	$596,624	$258.65	$221.07 - $298.82
Q3 2013	1,979,560	$476,597	$223.81	$203.55 - $248.95
Q2 2013	1,932,775	$415,933	$213.68	$191.80 - $242.64