Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 15,300 | $2,693 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 15,300 | $2,143 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 15,300 | $1,922 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 11,796 | $1,614 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 16,300 | $2,493 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 16,150 | $3,131 | $209.21 | $188.78 - $238.00 |
| Q3 2021 | 8,100 | $2,292 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 8,100 | $2,805 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 19,600 | $5,483 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 8,900 | $2,179 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 8,900 | $2,525 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 8,900 | $2,381 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 13,500 | $4,271 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 13,500 | $4,006 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 13,500 | $3,143 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 13,500 | $3,157 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 13,500 | $3,191 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 13,500 | $4,062 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 13,500 | $4,770 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 13,500 | $3,918 | $281.15 | $249.17 - $310.91 |