Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 2,226 | $392 | $163.37 | $138.00 - $185.17 |
| Q4 2016 | 21,850 | $6,196 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 19,897 | $6,228 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 21,297 | $5,150 | $263.54 | $223.02 - $292.69 |
| Q1 2016 | 19,804 | $5,155 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 20,004 | $6,128 | $287.35 | $254.00 - $311.65 |
| Q3 2015 | 19,350 | $5,647 | $330.23 | $265.00 - $412.24 |
| Q2 2015 | 20,000 | $8,079 | $401.33 | $368.88 - $432.88 |
| Q1 2015 | 70,259 | $29,666 | $394.14 | $334.40 - $480.18 |
| Q4 2014 | 68,250 | $23,167 | $323.51 | $290.85 - $361.93 |
| Q3 2014 | 117,700 | $38,936 | $329.72 | $298.31 - $349.00 |
| Q2 2014 | 120,150 | $37,884 | $300.97 | $272.02 - $322.25 |
| Q1 2014 | 118,800 | $36,337 | $317.43 | $270.62 - $358.89 |
| Q4 2013 | 119,600 | $33,449 | $258.65 | $221.07 - $298.82 |
| Q3 2013 | 120,150 | $28,927 | $223.81 | $203.55 - $248.95 |
| Q2 2013 | 119,118 | $25,634 | $213.68 | $191.80 - $242.64 |