Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 72,614 | $13 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 65,682 | $9 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 68,242 | $9 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 66,670 | $9 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 88,687 | $14 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 91,367 | $18 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 97,355 | $23 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 93,473 | $20 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 95,852 | $25 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 92,243 | $24 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 91,213 | $26 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 94,061 | $26 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 91,658 | $25 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 100,130 | $26,735 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 100,149 | $20,424 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 100,535 | $21,173 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 98,057 | $23,526 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 90,015 | $25,473 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 92,940 | $32,182 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 93,720 | $26,218 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 95,152 | $23,299 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 87,092 | $24,706 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 87,169 | $23,322 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 103,999 | $32,903 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 100,614 | $29,855 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 96,232 | $22,405 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 130,482 | $30,516 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 125,808 | $29,738 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 127,165 | $38,266 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 125,786 | $44,448 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 86,792 | $25,191 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 32,872 | $9,001 | $310.41 | $259.76 - $370.57 |