BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

NORGES BANK's Holding History (CIK: 0001374170)

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

Q4 2025
Shares 2,638,834 Value ($000) $464,408 Avg Close $163.37 Range $138.00 - $185.17
Q2 2025
Shares 2,264,177 Value ($000) $284,358 Avg Close $124.60 Range $110.04 - $137.32
Q4 2024
Shares 2,325,199 Value ($000) $355,569 Avg Close $168.67 Range $145.07 - $195.00
Q3 2024
Shares 2,264,392 Value ($000) $438,930 Avg Close $209.21 Range $188.78 - $238.00
Q2 2024
Shares 2,078,745 Value ($000) $481,895 Avg Close $217.32 Range $189.44 - $237.54
Q1 2024
Shares 1,523,141 Value ($000) $328,435 Avg Close $234.20 Range $211.02 - $268.30
Q4 2023
Shares 1,463,571 Value ($000) $378,728 Avg Close $245.62 Range $220.86 - $269.43
Q3 2023
Shares 1,529,096 Value ($000) $392,993 Avg Close $267.47 Range $251.85 - $287.60
Q2 2023
Shares 1,439,225 Value ($000) $409,963 Avg Close $297.86 Range $273.39 - $319.76
Q1 2023
Shares 1,377,534 Value ($000) $382,996 Avg Close $276.70 Range $254.80 - $295.90
Q4 2022
Shares 1,307,702 Value ($000) $362,129 Avg Close $282.44 Range $250.31 - $311.88
Q3 2022
Shares 1,244,737 Value ($000) $332,345 Avg Close $212.38 Range $193.65 - $283.44
Q2 2022
Shares 1,179,767 Value ($000) $240,602 Avg Close $204.43 Range $187.16 - $225.50
Q1 2022
Shares 1,371,053 Value ($000) $288,744 Avg Close $217.46 Range $192.67 - $249.00
Q4 2021
Shares 1,555,205 Value ($000) $373,125 Avg Close $257.12 Range $221.72 - $290.76
Q3 2021
Shares 1,622,011 Value ($000) $459,013 Avg Close $327.75 Range $282.64 - $372.12
Q2 2021
Shares 1,821,151 Value ($000) $630,610 Avg Close $302.94 Range $257.03 - $468.55
Q1 2021
Shares 1,752,068 Value ($000) $490,141 Avg Close $269.69 Range $238.40 - $296.38
Q4 2020
Shares 1,903,653 Value ($000) $466,128 Avg Close $259.08 Range $223.25 - $363.92
Q3 2020
Shares 2,015,029 Value ($000) $571,623 Avg Close $278.91 Range $261.87 - $312.00
Q2 2020
Shares 2,139,660 Value ($000) $572,466 Avg Close $300.59 Range $257.60 - $350.24
Q1 2020
Shares 2,221,875 Value ($000) $702,957 Avg Close $303.47 Range $262.25 - $374.99
Q4 2019
Shares 2,413,625 Value ($000) $716,195 Avg Close $277.46 Range $219.70 - $318.00
Q3 2019
Shares 2,254,989 Value ($000) $525,006 Avg Close $232.85 Range $215.78 - $246.99
Q2 2019
Shares 2,066,244 Value ($000) $483,233 Avg Close $230.90 Range $219.20 - $245.35
Q1 2019
Shares 2,060,447 Value ($000) $487,050 Avg Close $314.89 Range $216.12 - $344.00
Q4 2018
Shares 2,143,228 Value ($000) $644,940 Avg Close $319.14 Range $278.46 - $358.41
Q3 2018
Shares 2,163,493 Value ($000) $764,383 Avg Close $344.30 Range $288.13 - $388.67
Q2 2018
Shares 2,171,447 Value ($000) $630,241 Avg Close $281.15 Range $249.17 - $310.91
Q1 2018
Shares 2,120,089 Value ($000) $580,522 Avg Close $310.41 Range $259.76 - $370.57
Q4 2017
Shares 2,165,734 Value ($000) $689,938 Avg Close $320.80 Range $301.81 - $348.84
Q3 2017
Shares 2,019,198 Value ($000) $632,252 Avg Close $296.11 Range $269.50 - $330.00
Q2 2017
Shares 2,014,477 Value ($000) $546,648 Avg Close $264.42 Range $244.28 - $291.90
Q1 2017
Shares 2,103,834 Value ($000) $575,231 Avg Close $282.75 Range $260.50 - $301.42
Q4 2016
Shares 2,129,658 Value ($000) $603,929 Avg Close $296.43 Range $268.00 - $329.83
Q3 2016
Shares 2,046,202 Value ($000) $611,769 Avg Close $296.18 Range $240.07 - $333.65
Q2 2016
Shares 1,898,069 Value ($000) $458,991 Avg Close $263.54 Range $223.02 - $292.69
Q1 2016
Shares 1,816,599 Value ($000) $472,897 Avg Close $264.15 Range $242.07 - $301.02
Q4 2015
Shares 1,946,875 Value ($000) $596,426 Avg Close $287.35 Range $254.00 - $311.65
Q3 2015
Shares 1,975,930 Value ($000) $576,596 Avg Close $330.23 Range $265.00 - $412.24
Q2 2015
Shares 1,676,323 Value ($000) $677,134 Avg Close $401.33 Range $368.88 - $432.88
Q1 2015
Shares 1,650,587 Value ($000) $696,944 Avg Close $394.14 Range $334.40 - $480.18
Q4 2014
Shares 1,645,805 Value ($000) $558,669 Avg Close $323.51 Range $290.85 - $361.93
Q3 2014
Shares 1,645,805 Value ($000) $544,449 Avg Close $329.72 Range $298.31 - $349.00
Q2 2014
Shares 1,654,768 Value ($000) $521,765 Avg Close $300.97 Range $272.02 - $322.25
Q1 2014
Shares 1,671,668 Value ($000) $511,313 Avg Close $317.43 Range $270.62 - $358.89
Q4 2013
Shares 1,671,668 Value ($000) $467,649 Avg Close $258.65 Range $221.07 - $298.82
Q3 2013
Shares 1,722,326 Value ($000) $414,668 Avg Close $223.81 Range $203.55 - $248.95
Q2 2013
Shares 1,850,405 Value ($000) $398,207 Avg Close $213.68 Range $191.80 - $242.64
Q1 2013
Shares 1,861,919 Value ($000) $359,182 Avg Close $161.63 Range $139.72 - $192.92
Q3 2012
Shares 1,855,999 Value ($000) $276,971 Avg Close — Range —
Q2 2012
Shares 1,828,191 Value ($000) $266,605 Avg Close — Range —