Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 2,164 | $381 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 2,164 | $303 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 2,164 | $272 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 2,164 | $264 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 2,164 | $331 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 2,164 | $419 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 2,164 | $502 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 2,164 | $467 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 2,164 | $560 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 2,164 | $556 | $267.47 | $251.85 - $287.60 |
| Q4 2015 | 3,146 | $964 | $287.35 | $254.00 - $311.65 |
| Q3 2015 | 4,746 | $1,385 | $330.23 | $265.00 - $412.24 |
| Q2 2015 | 75,833 | $30,632 | $401.33 | $368.88 - $432.88 |
| Q1 2015 | 73,880 | $31,195 | $394.14 | $334.40 - $480.18 |
| Q4 2014 | 166,873 | $56,645 | $323.51 | $290.85 - $361.93 |
| Q3 2014 | 175,469 | $58,047 | $329.72 | $298.31 - $349.00 |
| Q2 2014 | 197,773 | $62,360 | $300.97 | $272.02 - $322.25 |
| Q1 2014 | 213,318 | $65,248 | $317.43 | $270.62 - $358.89 |
| Q4 2013 | 216,600 | $60,555 | $258.65 | $221.07 - $298.82 |
| Q3 2013 | 325,396 | $78,342 | $223.81 | $203.55 - $248.95 |
| Q2 2013 | 334,440 | $71,971 | $213.68 | $191.80 - $242.64 |
| Q1 2013 | 334,236 | $64,380 | $161.63 | $139.72 - $192.92 |
| Q4 2012 | 347,681 | $50,890 | — | — |
| Q3 2012 | 348,768 | $52,040 | — | — |