Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 33,462 | $5,889 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 33,400 | $4,679 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 33,400 | $4,195 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 33,400 | $4,570 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 102,838 | $15,726 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 16,852 | $3,267 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 16,852 | $3,907 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 16,840 | $3,631 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 16,800 | $4,347 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 16,792 | $4,346 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 14,125 | $3,989 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 14,125 | $4,328 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 8,525 | $2,361 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 8,525 | $2,254 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 16,993 | $3,466 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 15,812 | $3,330 | $217.46 | $192.67 - $249.00 |
| Q2 2021 | 815 | $282 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 1,615 | $449 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 1,874 | $457 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 1,974 | $558 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 2,174 | $572 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 800 | $253 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 1,000 | $297 | $277.46 | $219.70 - $318.00 |
| Q4 2018 | 31,220 | $9,395 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 31,266 | $11,118 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 37,950 | $11,015 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 38,220 | $10,466 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 37,940 | $12,087 | $320.80 | $301.81 - $348.84 |