Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 16,808 | $2,958 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 5,180 | $726 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 5,180 | $651 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 5,180 | $709 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 6,044 | $924 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 5,029 | $975 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 5,029 | $1,166 | $217.32 | $189.44 - $237.54 |
| Q4 2019 | 27,600 | $8,190 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 35,200 | $8,195 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 26,500 | $6,282 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 8,400 | $2,058 | $314.89 | $216.12 - $344.00 |
| Q2 2018 | 19,000 | $5,515 | $281.15 | $249.17 - $310.91 |
| Q4 2015 | 12,900 | $3,952 | $287.35 | $254.00 - $311.65 |
| Q3 2015 | 15,100 | $4,406 | $330.23 | $265.00 - $412.24 |
| Q2 2015 | 14,600 | $5,898 | $401.33 | $368.88 - $432.88 |
| Q1 2015 | 14,600 | $6,165 | $394.14 | $334.40 - $480.18 |
| Q4 2014 | 19,100 | $6,483 | $323.51 | $290.85 - $361.93 |
| Q3 2014 | 3,600 | $1,191 | $329.72 | $298.31 - $349.00 |