Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 88 | $15 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 69 | $10 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 89 | $11 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 114 | $16 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 114 | $17 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 599 | $116 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 142 | $33 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 138 | $30 | $234.20 | $211.02 - $268.30 |
| Q3 2023 | 107 | $28 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 80 | $23 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 84 | $23 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 112 | $31 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 116 | $31 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 117 | $24 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 101 | $21 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 82 | $20 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 90 | $25 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 93 | $32 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 90 | $25 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 728 | $178 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 1,090 | $309 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 1,285 | $344 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 1,285 | $407 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 1,550 | $460 | $277.46 | $219.70 - $318.00 |
| Q1 2019 | 3,750 | $886 | $314.89 | $216.12 - $344.00 |
| Q3 2018 | 2,100 | $742 | $344.30 | $288.13 - $388.67 |
| Q3 2016 | 353 | $111 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 11,403 | $2,757 | $263.54 | $223.02 - $292.69 |
| Q1 2016 | 27,923 | $7,269 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 28,162 | $8,628 | $287.35 | $254.00 - $311.65 |
| Q3 2015 | 547 | $160 | $330.23 | $265.00 - $412.24 |
| Q2 2015 | 100 | $40 | $401.33 | $368.88 - $432.88 |
| Q1 2015 | 100 | $42 | $394.14 | $334.40 - $480.18 |
| Q4 2014 | 100 | $34 | $323.51 | $290.85 - $361.93 |
| Q1 2014 | 212 | $65 | $317.43 | $270.62 - $358.89 |