BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Cairn Investment Group, Inc.'s Holding History (CIK: 0001800358)

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

Q4 2025

Shares 8,096 Value ($000) $1 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 8,204 Value ($000) $1 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 8,274 Value ($000) $1 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 8,356 Value ($000) $1 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 8,363 Value ($000) $1 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 11,516 Value ($000) $2 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 11,150 Value ($000) $3 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 11,333 Value ($000) $2 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 11,126 Value ($000) $3 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 10,803 Value ($000) $3 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 10,181 Value ($000) $3 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 9,820 Value ($000) $3 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 9,565 Value ($000) $3 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 9,120 Value ($000) $2,435 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 9,210 Value ($000) $1,878 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 9,110 Value ($000) $2,033 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 7,850 Value ($000) $1,883 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 7,250 Value ($000) $2,051 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 7,137 Value ($000) $2,471 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 6,962 Value ($000) $1,948 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 7,092 Value ($000) $1,737 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 7,010 Value ($000) $1,988 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 1,175 Value ($000) $314 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 1,230 Value ($000) $389 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 1,430 Value ($000) $424 Avg Close $277.46 Range $219.70 - $318.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	8,096	$1	$163.37	$138.00 - $185.17
Q3 2025	8,204	$1	$135.17	$121.05 - $150.28
Q2 2025	8,274	$1	$124.60	$110.04 - $137.32
Q1 2025	8,356	$1	$142.96	$128.51 - $157.09
Q4 2024	8,363	$1	$168.67	$145.07 - $195.00
Q3 2024	11,516	$2	$209.21	$188.78 - $238.00
Q2 2024	11,150	$3	$217.32	$189.44 - $237.54
Q1 2024	11,333	$2	$234.20	$211.02 - $268.30
Q4 2023	11,126	$3	$245.62	$220.86 - $269.43
Q3 2023	10,803	$3	$267.47	$251.85 - $287.60
Q2 2023	10,181	$3	$297.86	$273.39 - $319.76
Q1 2023	9,820	$3	$276.70	$254.80 - $295.90
Q4 2022	9,565	$3	$282.44	$250.31 - $311.88
Q3 2022	9,120	$2,435	$212.38	$193.65 - $283.44
Q2 2022	9,210	$1,878	$204.43	$187.16 - $225.50
Q1 2022	9,110	$2,033	$217.46	$192.67 - $249.00
Q4 2021	7,850	$1,883	$257.12	$221.72 - $290.76
Q3 2021	7,250	$2,051	$327.75	$282.64 - $372.12
Q2 2021	7,137	$2,471	$302.94	$257.03 - $468.55
Q1 2021	6,962	$1,948	$269.69	$238.40 - $296.38
Q4 2020	7,092	$1,737	$259.08	$223.25 - $363.92
Q3 2020	7,010	$1,988	$278.91	$261.87 - $312.00
Q2 2020	1,175	$314	$300.59	$257.60 - $350.24
Q1 2020	1,230	$389	$303.47	$262.25 - $374.99
Q4 2019	1,430	$424	$277.46	$219.70 - $318.00