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HealthCor Management, L.P.
> BIIB
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 12/31/2022 | BIOGEN INC. | BIIB | 0 | -69,950 | 0 | -18,677,000 | |
| 09/30/2022 | BIOGEN INC. | BIIB | 69,950 | -343,690 | 18,677,000 | -65,681,000 | $267.01 |
| 06/30/2022 | BIOGEN INC. | BIIB | 413,640 | 11,980 | 84,358,000 | -232,000 | $203.94 |
| 03/31/2022 | BIOGEN INC. | BIIB | 401,660 | -51,740 | 84,590,000 | -24,190,000 | $210.60 |
| 12/31/2021 | BIOGEN INC. | BIIB | 453,400 | -13,430 | 108,780,000 | -23,328,000 | $239.92 |
| 09/30/2021 | BIOGEN INC. | BIIB | 466,830 | 127,530 | 132,108,000 | 14,619,000 | $282.99 |
| 06/30/2021 | BIOGEN INC. | BIIB | 339,300 | 329,740 | 117,489,000 | 115,148,000 | $346.27 |
| 12/31/2020 | BIOGEN INC. | BIIB | 9,560 | 9,560 | 2,341,000 | 2,341,000 | $244.87 |
| 06/30/2020 | BIOGEN INC. | BIIB | 0 | -48,002 | 0 | -15,187,000 | |
| 03/31/2020 | BIOGEN INC. | BIIB | 48,002 | 48,002 | 15,187,000 | 15,187,000 | $316.38 |
| 12/31/2019 | BIOGEN INC. | BIIB | 0 | -356,860 | 0 | -83,084,000 | |
| 09/30/2019 | BIOGEN INC. | BIIB | 356,860 | 356,860 | 83,084,000 | 83,084,000 | $232.82 |
| 03/31/2019 | BIOGEN INC. | BIIB | 0 | -66,780 | 0 | -20,095,000 | |
| 12/31/2018 | BIOGEN INC. | BIIB | 66,780 | 55,170 | 20,095,000 | 15,993,000 | $300.91 |
| 09/30/2018 | BIOGEN INC. | BIIB | 11,610 | 11,610 | 4,102,000 | 4,102,000 | $353.32 |
| 12/31/2016 | BIOGEN INC. | BIIB | 0 | -375,000 | 0 | -117,386,000 | |
| 09/30/2016 | BIOGEN INC. | BIIB | 375,000 | -100,000 | 117,386,000 | 2,521,000 | $313.03 |
| 06/30/2016 | BIOGEN INC. | BIIB | 475,000 | 475,000 | 114,865,000 | 114,865,000 | $241.82 |
| 03/31/2016 | BIOGEN INC. | BIIB | 0 | -47,090 | 0 | -14,426,000 | |
| 12/31/2015 | BIOGEN INC. | BIIB | 47,090 | 47,090 | 14,426,000 | 14,426,000 | $306.35 |
| 09/30/2015 | BIOGEN INC. | BIIB | 0 | -32,140 | 0 | -12,983,000 | |
| 06/30/2015 | BIOGEN INC. | BIIB | 32,140 | 32,140 | 12,983,000 | 12,983,000 | $403.95 |
| 03/31/2015 | BIOGEN INC. | BIIB | 190,700 | 190,700 | 80,521,000 | 80,521,000 | $422.24 |
| 12/31/2014 | BIOGEN INC. | BIIB | 0 | -200,000 | 0 | -66,162,000 | |
| 09/30/2014 | BIOGEN INC. | BIIB | 200,000 | 200,000 | 66,162,000 | 66,162,000 | $330.81 |
| 06/30/2014 | BIOGEN INC. | BIIB | 14,000 | 14,000 | 4,414,000 | 4,414,000 | $315.29 |
| 03/31/2014 | BIOGEN INC. | BIIB | 0 | -27,800 | 0 | -7,772,000 | |
| 12/31/2013 | BIOGEN INC. | BIIB | 27,800 | 27,800 | 7,772,000 | 7,772,000 | $279.57 |
| 09/30/2013 | BIOGEN INC. | BIIB | 0 | -300,000 | 0 | -64,560,000 | |
| 06/30/2013 | BIOGEN INC. | BIIB | 300,000 | 300,000 | 64,560,000 | 64,560,000 | $215.20 |
| 03/31/2012 | BIOGEN INC. | BIIB | 0 | -50,000 | 0 | -5,503,000 | |
| 12/31/2011 | BIOGEN INC. | BIIB | 50,000 | -37,326 | 5,503,000 | -2,631,000 | $110.06 |
| 09/30/2011 | BIOGEN INC. | BIIB | 87,326 | -2,190,174 | 8,134,000 | -113,712,000 | $93.15 |
| 12/31/2009 | BIOGEN INC. | BIIB | 2,277,500 | -2,122,500 | 121,846,000 | -100,442,000 | $53.50 |
| 09/30/2009 | BIOGEN INC. | BIIB | 4,400,000 | -1,255,000 | 222,288,000 | -33,035,000 | $50.52 |
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