Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q3 2025 | 5,100 | $714 | $135.17 | $121.05 - $150.28 |
| Q1 2025 | 1,940 | $265 | $142.96 | $128.51 - $157.09 |
| Q1 2024 | 8,114 | $1,750 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 11,600 | $3,002 | $245.62 | $220.86 - $269.43 |
| Q2 2021 | 11,500 | $3,982 | $302.94 | $257.03 - $468.55 |
| Q4 2020 | 4,200 | $1,028 | $259.08 | $223.25 - $363.92 |
| Q2 2020 | 25,000 | $6,689 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 10,100 | $3,195 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 17,800 | $5,282 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 4,300 | $1,001 | $232.85 | $215.78 - $246.99 |
| Q4 2018 | 9,009 | $2,711 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 1,309 | $462 | $344.30 | $288.13 - $388.67 |
| Q2 2017 | 4,000 | $1,085 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 5,676 | $1,552 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 3,110 | $882 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 2,310 | $723 | $296.18 | $240.07 - $333.65 |
| Q1 2016 | 1,604 | $418 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 1,047 | $321 | $287.35 | $254.00 - $311.65 |