Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 12 | $2 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 4 | $1 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 6 | $1 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 6 | $1 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 2 | $0 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 2 | $0 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 2 | $0 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 2 | $0 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 2 | $1 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 2 | $1 | $267.47 | $251.85 - $287.60 |
| Q1 2023 | 2 | $1 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 2 | $1 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 2 | $1 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 2 | $407 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 1 | $210 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 1 | $239 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 1 | $282 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 1 | $346 | $302.94 | $257.03 - $468.55 |
| Q1 2019 | 109,859 | $25,968,470 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 108,238 | $32,570,978 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 104,745 | $37,007,455 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 123,613 | $35,877,437 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 132,787 | $36,359,736 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 138,348 | $44,073,522 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 179,058 | $56,066,641 | $296.11 | $269.50 - $330.00 |
| Q2 2017 | 189,630 | $51,457,996 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 204,754 | $55,983,839 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 196,359 | $55,683,485 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 225,669 | $70,641,167 | $296.18 | $240.07 - $333.65 |