BIOGEN INC

CUSIP: 09062x103 Class: COM

BERKSHIRE ASSET MANAGEMENT LLC/PA's Holding History (CIK: 0000949012)

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

Q4 2025
Shares 1,535 Value ($000) $270 Avg Close — Range —
Q1 2024
Shares 2,067 Value ($000) $446 Avg Close — Range —
Q4 2023
Shares 2,077 Value ($000) $537 Avg Close — Range —
Q3 2023
Shares 2,110 Value ($000) $542 Avg Close — Range —
Q2 2023
Shares 2,204 Value ($000) $628 Avg Close — Range —
Q1 2023
Shares 2,529 Value ($000) $703 Avg Close — Range —
Q3 2022
Shares 2,352 Value ($000) $628 Avg Close — Range —
Q2 2022
Shares 2,797 Value ($000) $570 Avg Close — Range —
Q1 2022
Shares 3,622 Value ($000) $763 Avg Close — Range —
Q4 2021
Shares 3,562 Value ($000) $855 Avg Close — Range —
Q3 2021
Shares 5,490 Value ($000) $1,554 Avg Close — Range —
Q2 2021
Shares 5,568 Value ($000) $1,928 Avg Close — Range —
Q1 2021
Shares 5,853 Value ($000) $1,637 Avg Close — Range —
Q4 2020
Shares 5,512 Value ($000) $1,350 Avg Close — Range —
Q3 2020
Shares 2,181 Value ($000) $619 Avg Close — Range —
Q2 2020
Shares 2,293 Value ($000) $613 Avg Close — Range —
Q1 2020
Shares 5,434 Value ($000) $1,719 Avg Close — Range —
Q4 2019
Shares 2,224 Value ($000) $660 Avg Close — Range —
Q3 2019
Shares 2,157 Value ($000) $502 Avg Close — Range —
Q2 2019
Shares 2,270 Value ($000) $531 Avg Close — Range —
Q1 2019
Shares 2,012 Value ($000) $476 Avg Close — Range —
Q4 2018
Shares 2,002 Value ($000) $602 Avg Close — Range —
Q3 2018
Shares 2,147 Value ($000) $759 Avg Close — Range —
Q2 2018
Shares 2,135 Value ($000) $620 Avg Close — Range —
Q1 2018
Shares 1,806 Value ($000) $495 Avg Close — Range —
Q4 2017
Shares 1,870 Value ($000) $596 Avg Close — Range —
Q3 2017
Shares 1,842 Value ($000) $577 Avg Close — Range —
Q2 2017
Shares 1,967 Value ($000) $534 Avg Close — Range —
Q1 2017
Shares 2,197 Value ($000) $601 Avg Close — Range —
Q4 2016
Shares 2,008 Value ($000) $569 Avg Close — Range —
Q3 2016
Shares 2,336 Value ($000) $731 Avg Close — Range —
Q2 2016
Shares 3,763 Value ($000) $910 Avg Close — Range —
Q1 2016
Shares 2,964 Value ($000) $772 Avg Close — Range —
Q4 2015
Shares 2,896 Value ($000) $887 Avg Close — Range —
Q3 2015
Shares 2,746 Value ($000) $801 Avg Close — Range —
Q2 2015
Shares 1,877 Value ($000) $758 Avg Close — Range —
Q1 2015
Shares 1,910 Value ($000) $806 Avg Close — Range —
Q4 2014
Shares 2,176 Value ($000) $739 Avg Close — Range —
Q3 2014
Shares 2,133 Value ($000) $706 Avg Close — Range —
Q2 2014
Shares 2,133 Value ($000) $673 Avg Close — Range —
Q1 2014
Shares 2,133 Value ($000) $652 Avg Close — Range —
Q4 2013
Shares 6,068 Value ($000) $1,696 Avg Close — Range —
Q3 2013
Shares 5,218 Value ($000) $1,256 Avg Close — Range —
Q2 2013
Shares 1,713 Value ($000) $369 Avg Close — Range —