BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Gulf International Bank (UK) Ltd's Holding History (CIK: 0001598697)

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

Q4 2025

Shares 7,901 Value ($000) $1 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 7,924 Value ($000) $1 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 7,924 Value ($000) $1 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 7,924 Value ($000) $1 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 11,323 Value ($000) $2 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 11,438 Value ($000) $2 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 11,949 Value ($000) $3 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 12,429 Value ($000) $3 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 12,366 Value ($000) $3 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 13,803 Value ($000) $4 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 15,154 Value ($000) $4 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 18,896 Value ($000) $5 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 26,177 Value ($000) $7 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 26,177 Value ($000) $6,989 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 27,452 Value ($000) $5,633 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 27,052 Value ($000) $5,697 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 27,052 Value ($000) $6,490 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 31,808 Value ($000) $9,001 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 32,174 Value ($000) $11,140 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 32,749 Value ($000) $9,161 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 36,189 Value ($000) $8,861 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 41,559 Value ($000) $11,789 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 43,107 Value ($000) $11,533 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 45,086 Value ($000) $14,264 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 46,111 Value ($000) $13,682 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 46,311 Value ($000) $10,782 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 46,606 Value ($000) $10,899 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 49,394 Value ($000) $11,675 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 49,329 Value ($000) $14,844 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 72,078 Value ($000) $25,465 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 66,981 Value ($000) $19,440 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 66,881 Value ($000) $18,313 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 67,596 Value ($000) $21,534 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 67,656 Value ($000) $21,184 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 67,756 Value ($000) $18,386 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 67,666 Value ($000) $18,501 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 66,786 Value ($000) $18,939 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 66,786 Value ($000) $20,906 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 66,786 Value ($000) $16,150 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 66,786 Value ($000) $17,385 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 69,641 Value ($000) $21,335 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 68,091 Value ($000) $19,870 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 68,091 Value ($000) $27,505 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 67,903 Value ($000) $28,671 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 67,833 Value ($000) $23,026 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 67,106 Value ($000) $22,199 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 65,870 Value ($000) $20,769 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 65,870 Value ($000) $20,148 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 65,481 Value ($000) $18,307 Avg Close $258.65 Range $221.07 - $298.82

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	7,901	$1	$163.37	$138.00 - $185.17
Q3 2025	7,924	$1	$135.17	$121.05 - $150.28
Q2 2025	7,924	$1	$124.60	$110.04 - $137.32
Q1 2025	7,924	$1	$142.96	$128.51 - $157.09
Q4 2024	11,323	$2	$168.67	$145.07 - $195.00
Q3 2024	11,438	$2	$209.21	$188.78 - $238.00
Q2 2024	11,949	$3	$217.32	$189.44 - $237.54
Q1 2024	12,429	$3	$234.20	$211.02 - $268.30
Q4 2023	12,366	$3	$245.62	$220.86 - $269.43
Q3 2023	13,803	$4	$267.47	$251.85 - $287.60
Q2 2023	15,154	$4	$297.86	$273.39 - $319.76
Q1 2023	18,896	$5	$276.70	$254.80 - $295.90
Q4 2022	26,177	$7	$282.44	$250.31 - $311.88
Q3 2022	26,177	$6,989	$212.38	$193.65 - $283.44
Q2 2022	27,452	$5,633	$204.43	$187.16 - $225.50
Q1 2022	27,052	$5,697	$217.46	$192.67 - $249.00
Q4 2021	27,052	$6,490	$257.12	$221.72 - $290.76
Q3 2021	31,808	$9,001	$327.75	$282.64 - $372.12
Q2 2021	32,174	$11,140	$302.94	$257.03 - $468.55
Q1 2021	32,749	$9,161	$269.69	$238.40 - $296.38
Q4 2020	36,189	$8,861	$259.08	$223.25 - $363.92
Q3 2020	41,559	$11,789	$278.91	$261.87 - $312.00
Q2 2020	43,107	$11,533	$300.59	$257.60 - $350.24
Q1 2020	45,086	$14,264	$303.47	$262.25 - $374.99
Q4 2019	46,111	$13,682	$277.46	$219.70 - $318.00
Q3 2019	46,311	$10,782	$232.85	$215.78 - $246.99
Q2 2019	46,606	$10,899	$230.90	$219.20 - $245.35
Q1 2019	49,394	$11,675	$314.89	$216.12 - $344.00
Q4 2018	49,329	$14,844	$319.14	$278.46 - $358.41
Q3 2018	72,078	$25,465	$344.30	$288.13 - $388.67
Q2 2018	66,981	$19,440	$281.15	$249.17 - $310.91
Q1 2018	66,881	$18,313	$310.41	$259.76 - $370.57
Q4 2017	67,596	$21,534	$320.80	$301.81 - $348.84
Q3 2017	67,656	$21,184	$296.11	$269.50 - $330.00
Q2 2017	67,756	$18,386	$264.42	$244.28 - $291.90
Q1 2017	67,666	$18,501	$282.75	$260.50 - $301.42
Q4 2016	66,786	$18,939	$296.43	$268.00 - $329.83
Q3 2016	66,786	$20,906	$296.18	$240.07 - $333.65
Q2 2016	66,786	$16,150	$263.54	$223.02 - $292.69
Q1 2016	66,786	$17,385	$264.15	$242.07 - $301.02
Q4 2015	69,641	$21,335	$287.35	$254.00 - $311.65
Q3 2015	68,091	$19,870	$330.23	$265.00 - $412.24
Q2 2015	68,091	$27,505	$401.33	$368.88 - $432.88
Q1 2015	67,903	$28,671	$394.14	$334.40 - $480.18
Q4 2014	67,833	$23,026	$323.51	$290.85 - $361.93
Q3 2014	67,106	$22,199	$329.72	$298.31 - $349.00
Q2 2014	65,870	$20,769	$300.97	$272.02 - $322.25
Q1 2014	65,870	$20,148	$317.43	$270.62 - $358.89
Q4 2013	65,481	$18,307	$258.65	$221.07 - $298.82