Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 255 | $45 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 21,381 | $2,995 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 333 | $42 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 215 | $29 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 215 | $33 | $168.67 | $145.07 - $195.00 |
| Q2 2024 | 20 | $5 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 25 | $5 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 5 | $1 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 5 | $1 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 5 | $1 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 5 | $1 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 5 | $1 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 5 | $1 | $212.38 | $193.65 - $283.44 |
| Q3 2020 | 5 | $1 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 5 | $1 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 5 | $2 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 5 | $1 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 5 | $1 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 5 | $1 | $230.90 | $219.20 - $245.35 |
| Q4 2018 | 5 | $2 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 17 | $6 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 128 | $37 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 106 | $29 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 166 | $52 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 171 | $53 | $296.11 | $269.50 - $330.00 |
| Q2 2017 | 156 | $42 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 188 | $51 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 110 | $31 | $296.43 | $268.00 - $329.83 |