BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Connor, Clark & Lunn Investment Management Ltd.'s Holding History (CIK: 0001596800)

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

Q3 2025

Shares 116,928 Value ($000) $16,379 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 217,738 Value ($000) $27,346 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 277,834 Value ($000) $38,019 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 140,320 Value ($000) $21,458 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 22,744 Value ($000) $4,409 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 88,502 Value ($000) $20,517 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 12,037 Value ($000) $2,596 Avg Close $234.20 Range $211.02 - $268.30

Q2 2023

Shares 54,037 Value ($000) $15,392 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 107,268 Value ($000) $29,824 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 62,227 Value ($000) $17,232 Avg Close $282.44 Range $250.31 - $311.88

Q1 2022

Shares 11,787 Value ($000) $2,482 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 6,888 Value ($000) $1,653 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 8,578 Value ($000) $2,427 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 16,041 Value ($000) $5,555 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 31,689 Value ($000) $8,865 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 90,625 Value ($000) $22,190 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 34,874 Value ($000) $9,893 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 70,625 Value ($000) $18,896 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 36,147 Value ($000) $11,436 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 68,677 Value ($000) $20,379 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 104,925 Value ($000) $24,429 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 144,700 Value ($000) $33,841 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 91,875 Value ($000) $21,717 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 10,600 Value ($000) $3,190 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 34,300 Value ($000) $12,119 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 21,150 Value ($000) $6,139 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 30,650 Value ($000) $8,393 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 15,150 Value ($000) $4,826 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 12,125 Value ($000) $3,797 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 11,675 Value ($000) $3,168 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 11,800 Value ($000) $3,226 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 10,000 Value ($000) $2,836 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 9,700 Value ($000) $3,036 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 37,475 Value ($000) $9,062 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 76,800 Value ($000) $19,993 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 70,275 Value ($000) $21,529 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 73,775 Value ($000) $21,528 Avg Close $330.23 Range $265.00 - $412.24

Q3 2014

Shares 8,500 Value ($000) $2,812 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 5,800 Value ($000) $1,948 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 1,200 Value ($000) $405 Avg Close $317.43 Range $270.62 - $358.89

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	116,928	$16,379	$135.17	$121.05 - $150.28
Q2 2025	217,738	$27,346	$124.60	$110.04 - $137.32
Q1 2025	277,834	$38,019	$142.96	$128.51 - $157.09
Q4 2024	140,320	$21,458	$168.67	$145.07 - $195.00
Q3 2024	22,744	$4,409	$209.21	$188.78 - $238.00
Q2 2024	88,502	$20,517	$217.32	$189.44 - $237.54
Q1 2024	12,037	$2,596	$234.20	$211.02 - $268.30
Q2 2023	54,037	$15,392	$297.86	$273.39 - $319.76
Q1 2023	107,268	$29,824	$276.70	$254.80 - $295.90
Q4 2022	62,227	$17,232	$282.44	$250.31 - $311.88
Q1 2022	11,787	$2,482	$217.46	$192.67 - $249.00
Q4 2021	6,888	$1,653	$257.12	$221.72 - $290.76
Q3 2021	8,578	$2,427	$327.75	$282.64 - $372.12
Q2 2021	16,041	$5,555	$302.94	$257.03 - $468.55
Q1 2021	31,689	$8,865	$269.69	$238.40 - $296.38
Q4 2020	90,625	$22,190	$259.08	$223.25 - $363.92
Q3 2020	34,874	$9,893	$278.91	$261.87 - $312.00
Q2 2020	70,625	$18,896	$300.59	$257.60 - $350.24
Q1 2020	36,147	$11,436	$303.47	$262.25 - $374.99
Q4 2019	68,677	$20,379	$277.46	$219.70 - $318.00
Q3 2019	104,925	$24,429	$232.85	$215.78 - $246.99
Q2 2019	144,700	$33,841	$230.90	$219.20 - $245.35
Q1 2019	91,875	$21,717	$314.89	$216.12 - $344.00
Q4 2018	10,600	$3,190	$319.14	$278.46 - $358.41
Q3 2018	34,300	$12,119	$344.30	$288.13 - $388.67
Q2 2018	21,150	$6,139	$281.15	$249.17 - $310.91
Q1 2018	30,650	$8,393	$310.41	$259.76 - $370.57
Q4 2017	15,150	$4,826	$320.80	$301.81 - $348.84
Q3 2017	12,125	$3,797	$296.11	$269.50 - $330.00
Q2 2017	11,675	$3,168	$264.42	$244.28 - $291.90
Q1 2017	11,800	$3,226	$282.75	$260.50 - $301.42
Q4 2016	10,000	$2,836	$296.43	$268.00 - $329.83
Q3 2016	9,700	$3,036	$296.18	$240.07 - $333.65
Q2 2016	37,475	$9,062	$263.54	$223.02 - $292.69
Q1 2016	76,800	$19,993	$264.15	$242.07 - $301.02
Q4 2015	70,275	$21,529	$287.35	$254.00 - $311.65
Q3 2015	73,775	$21,528	$330.23	$265.00 - $412.24
Q3 2014	8,500	$2,812	$329.72	$298.31 - $349.00
Q2 2014	5,800	$1,948	$300.97	$272.02 - $322.25
Q1 2014	1,200	$405	$317.43	$270.62 - $358.89