BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

State of Alaska, Department of Revenue's Holding History (CIK: 0001370102)

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

Q4 2025
Shares 17,187 Value ($000) $3 Avg Close $163.37 Range $138.00 - $185.17
Q3 2025
Shares 18,182 Value ($000) $3 Avg Close $135.17 Range $121.05 - $150.28
Q2 2025
Shares 19,059 Value ($000) $2 Avg Close $124.60 Range $110.04 - $137.32
Q1 2025
Shares 19,719 Value ($000) $3 Avg Close $142.96 Range $128.51 - $157.09
Q4 2024
Shares 19,179 Value ($000) $3 Avg Close $168.67 Range $145.07 - $195.00
Q3 2024
Shares 24,870 Value ($000) $5 Avg Close $209.21 Range $188.78 - $238.00
Q2 2024
Shares 29,770 Value ($000) $7 Avg Close $217.32 Range $189.44 - $237.54
Q1 2024
Shares 33,640 Value ($000) $7 Avg Close $234.20 Range $211.02 - $268.30
Q4 2023
Shares 38,550 Value ($000) $10 Avg Close $245.62 Range $220.86 - $269.43
Q3 2023
Shares 47,175 Value ($000) $12 Avg Close $267.47 Range $251.85 - $287.60
Q2 2023
Shares 47,740 Value ($000) $14 Avg Close $297.86 Range $273.39 - $319.76
Q1 2023
Shares 48,664 Value ($000) $14 Avg Close $276.70 Range $254.80 - $295.90
Q4 2022
Shares 48,421 Value ($000) $13 Avg Close $282.44 Range $250.31 - $311.88
Q3 2022
Shares 47,579 Value ($000) $12,702 Avg Close $212.38 Range $193.65 - $283.44
Q2 2022
Shares 49,760 Value ($000) $10,147 Avg Close $204.43 Range $187.16 - $225.50
Q1 2022
Shares 53,995 Value ($000) $11,370 Avg Close $217.46 Range $192.67 - $249.00
Q4 2021
Shares 57,835 Value ($000) $13,875 Avg Close $257.12 Range $221.72 - $290.76
Q3 2021
Shares 65,920 Value ($000) $18,654 Avg Close $327.75 Range $282.64 - $372.12
Q2 2021
Shares 69,534 Value ($000) $24,077 Avg Close $302.94 Range $257.03 - $468.55
Q1 2021
Shares 59,966 Value ($000) $16,774 Avg Close $269.69 Range $238.40 - $296.38
Q4 2020
Shares 64,664 Value ($000) $15,833 Avg Close $259.08 Range $223.25 - $363.92
Q3 2020
Shares 90,946 Value ($000) $25,798 Avg Close $278.91 Range $261.87 - $312.00
Q2 2020
Shares 59,016 Value ($000) $15,788 Avg Close $300.59 Range $257.60 - $350.24
Q1 2020
Shares 32,329 Value ($000) $10,227 Avg Close $303.47 Range $262.25 - $374.99
Q4 2019
Shares 30,682 Value ($000) $9,103 Avg Close $277.46 Range $219.70 - $318.00
Q3 2019
Shares 33,762 Value ($000) $7,860 Avg Close $232.85 Range $215.78 - $246.99
Q2 2019
Shares 29,129 Value ($000) $6,809 Avg Close $230.90 Range $219.20 - $245.35
Q1 2019
Shares 30,001 Value ($000) $7,090 Avg Close $314.89 Range $216.12 - $344.00
Q4 2018
Shares 31,186 Value ($000) $9,382 Avg Close $319.14 Range $278.46 - $358.41
Q3 2018
Shares 30,994 Value ($000) $10,949 Avg Close $344.30 Range $288.13 - $388.67
Q2 2018
Shares 32,458 Value ($000) $9,418 Avg Close $281.15 Range $249.17 - $310.91
Q1 2018
Shares 26,358 Value ($000) $7,215 Avg Close $310.41 Range $259.76 - $370.57
Q4 2017
Shares 22,248 Value ($000) $7,086 Avg Close $320.80 Range $301.81 - $348.84
Q3 2017
Shares 1,840 Value ($000) $576 Avg Close $296.11 Range $269.50 - $330.00