BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

CULLEN/FROST BANKERS, INC.'s Holding History (CIK: 0000039263)

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

Q4 2025

Shares 43 Value ($000) $8 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 40 Value ($000) $6 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 40 Value ($000) $5 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 40 Value ($000) $5 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 86 Value ($000) $13 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 50 Value ($000) $10 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 100 Value ($000) $23 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 129 Value ($000) $28 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 122 Value ($000) $32 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 272 Value ($000) $70 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 272 Value ($000) $77 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 282 Value ($000) $78 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 282 Value ($000) $78 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 440 Value ($000) $117 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 2,576 Value ($000) $525 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 2,799 Value ($000) $589 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 2,799 Value ($000) $672 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 2,619 Value ($000) $741 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 2,780 Value ($000) $963 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 2,881 Value ($000) $806 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 2,915 Value ($000) $714 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 3,441 Value ($000) $976 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 3,277 Value ($000) $877 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 567 Value ($000) $179 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 602 Value ($000) $179 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 1,906 Value ($000) $444 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 2,027 Value ($000) $474 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 2,312 Value ($000) $540 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 2,342 Value ($000) $704 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 4,209 Value ($000) $1,487 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 9,987 Value ($000) $2,899 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 14,129 Value ($000) $3,868 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 15,002 Value ($000) $4,779 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 15,566 Value ($000) $4,874 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 16,048 Value ($000) $4,355 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 16,218 Value ($000) $4,434 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 16,851 Value ($000) $4,778 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 21,696 Value ($000) $6,791 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 24,459 Value ($000) $5,915 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 68,215 Value ($000) $17,757 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 56,082 Value ($000) $17,181 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 48,231 Value ($000) $14,074 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 48,306 Value ($000) $19,513 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 46,642 Value ($000) $19,694 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 44,565 Value ($000) $15,127 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 42,891 Value ($000) $14,189 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 41,808 Value ($000) $13,182 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 42,615 Value ($000) $13,035 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 41,715 Value ($000) $11,663 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 38,998 Value ($000) $9,389 Avg Close $223.81 Range $203.55 - $248.95

Q2 2013

Shares 35,434 Value ($000) $7,625 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	43	$8	$163.37	$138.00 - $185.17
Q3 2025	40	$6	$135.17	$121.05 - $150.28
Q2 2025	40	$5	$124.60	$110.04 - $137.32
Q1 2025	40	$5	$142.96	$128.51 - $157.09
Q4 2024	86	$13	$168.67	$145.07 - $195.00
Q3 2024	50	$10	$209.21	$188.78 - $238.00
Q2 2024	100	$23	$217.32	$189.44 - $237.54
Q1 2024	129	$28	$234.20	$211.02 - $268.30
Q4 2023	122	$32	$245.62	$220.86 - $269.43
Q3 2023	272	$70	$267.47	$251.85 - $287.60
Q2 2023	272	$77	$297.86	$273.39 - $319.76
Q1 2023	282	$78	$276.70	$254.80 - $295.90
Q4 2022	282	$78	$282.44	$250.31 - $311.88
Q3 2022	440	$117	$212.38	$193.65 - $283.44
Q2 2022	2,576	$525	$204.43	$187.16 - $225.50
Q1 2022	2,799	$589	$217.46	$192.67 - $249.00
Q4 2021	2,799	$672	$257.12	$221.72 - $290.76
Q3 2021	2,619	$741	$327.75	$282.64 - $372.12
Q2 2021	2,780	$963	$302.94	$257.03 - $468.55
Q1 2021	2,881	$806	$269.69	$238.40 - $296.38
Q4 2020	2,915	$714	$259.08	$223.25 - $363.92
Q3 2020	3,441	$976	$278.91	$261.87 - $312.00
Q2 2020	3,277	$877	$300.59	$257.60 - $350.24
Q1 2020	567	$179	$303.47	$262.25 - $374.99
Q4 2019	602	$179	$277.46	$219.70 - $318.00
Q3 2019	1,906	$444	$232.85	$215.78 - $246.99
Q2 2019	2,027	$474	$230.90	$219.20 - $245.35
Q1 2019	2,312	$540	$314.89	$216.12 - $344.00
Q4 2018	2,342	$704	$319.14	$278.46 - $358.41
Q3 2018	4,209	$1,487	$344.30	$288.13 - $388.67
Q2 2018	9,987	$2,899	$281.15	$249.17 - $310.91
Q1 2018	14,129	$3,868	$310.41	$259.76 - $370.57
Q4 2017	15,002	$4,779	$320.80	$301.81 - $348.84
Q3 2017	15,566	$4,874	$296.11	$269.50 - $330.00
Q2 2017	16,048	$4,355	$264.42	$244.28 - $291.90
Q1 2017	16,218	$4,434	$282.75	$260.50 - $301.42
Q4 2016	16,851	$4,778	$296.43	$268.00 - $329.83
Q3 2016	21,696	$6,791	$296.18	$240.07 - $333.65
Q2 2016	24,459	$5,915	$263.54	$223.02 - $292.69
Q1 2016	68,215	$17,757	$264.15	$242.07 - $301.02
Q4 2015	56,082	$17,181	$287.35	$254.00 - $311.65
Q3 2015	48,231	$14,074	$330.23	$265.00 - $412.24
Q2 2015	48,306	$19,513	$401.33	$368.88 - $432.88
Q1 2015	46,642	$19,694	$394.14	$334.40 - $480.18
Q4 2014	44,565	$15,127	$323.51	$290.85 - $361.93
Q3 2014	42,891	$14,189	$329.72	$298.31 - $349.00
Q2 2014	41,808	$13,182	$300.97	$272.02 - $322.25
Q1 2014	42,615	$13,035	$317.43	$270.62 - $358.89
Q4 2013	41,715	$11,663	$258.65	$221.07 - $298.82
Q3 2013	38,998	$9,389	$223.81	$203.55 - $248.95
Q2 2013	35,434	$7,625	$213.68	$191.80 - $242.64