Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q3 2025 | 100 | $14 | $135.17 | $121.05 - $150.28 |
| Q1 2022 | 531 | $112 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 546 | $131 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 697 | $197 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 938 | $325 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 952 | $266 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 952 | $233 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 1,280 | $366 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 1,280 | $342 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 1,286 | $407 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 1,371 | $407 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 1,371 | $319 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 1,385 | $324 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 1,503 | $355 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 1,527 | $460 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 1,532 | $541 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 1,512 | $439 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 1,535 | $420 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 1,550 | $494 | $320.80 | $301.81 - $348.84 |