Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 84,228 | $15 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 99,316 | $14 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 97,601 | $12 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 80,254 | $11 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 81,935 | $13 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 68,502 | $13 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 67,206 | $16 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 64,060 | $14 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 57,533 | $15 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 75,764 | $19 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 74,790 | $21 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 69,235 | $19 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 66,222 | $18 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 78,399 | $20,933 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 79,985 | $16,312 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 42,314 | $8,911 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 65,686 | $15,759 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 87,583 | $24,785 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 96,340 | $33,360 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 87,206 | $24,396 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 61,681 | $15,103 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 64,379 | $18,263 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 65,223 | $17,450 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 39,372 | $12,457 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 43,872 | $13,018 | $277.46 | $219.70 - $318.00 |
| Q4 2016 | 4,800 | $1,361 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 8,500 | $2,661 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 10,030 | $2,425 | $263.54 | $223.02 - $292.69 |
| Q1 2016 | 15,030 | $3,913 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 39,973 | $12,246 | $287.35 | $254.00 - $311.65 |