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WELLINGTON MANAGEMENT GROUP LLP
> BIIB
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | BIOGEN INC. | BIIB | 5,346,359 | -106,529 | 1,522,910,360,000 | 6,843,910,000 | $284,850.00 |
| 03/31/2023 | BIOGEN INC. | BIIB | 5,452,888 | 317,271 | 1,516,066,450,000 | 1,514,695,240,000 | $278,030.00 |
| 09/30/2022 | BIOGEN INC. | BIIB | 5,135,617 | -1,151,108 | 1,371,210,000 | 89,095,000 | $267.00 |
| 06/30/2022 | BIOGEN INC. | BIIB | 6,286,725 | 37,199 | 1,282,115,000 | -34,036,000 | $203.94 |
| 03/31/2022 | BIOGEN INC. | BIIB | 6,249,526 | 65,071 | 1,316,151,000 | -167,625,000 | $210.60 |
| 12/31/2021 | BIOGEN INC. | BIIB | 6,184,455 | 606,735 | 1,483,776,000 | -94,663,000 | $239.92 |
| 09/30/2021 | BIOGEN INC. | BIIB | 5,577,720 | -24,141 | 1,578,439,000 | -361,317,000 | $282.99 |
| 06/30/2021 | BIOGEN INC. | BIIB | 5,601,861 | -300,980 | 1,939,756,000 | 288,436,000 | $346.27 |
| 03/31/2021 | BIOGEN INC. | BIIB | 5,902,841 | 120,868 | 1,651,320,000 | 235,546,000 | $279.75 |
| 12/31/2020 | BIOGEN INC. | BIIB | 5,781,973 | 924,781 | 1,415,774,000 | 37,886,000 | $244.86 |
| 09/30/2020 | BIOGEN INC. | BIIB | 4,857,192 | 83,432 | 1,377,888,000 | 100,669,000 | $283.68 |
| 06/30/2020 | BIOGEN INC. | BIIB | 4,773,760 | 678,521 | 1,277,219,000 | -18,432,000 | $267.55 |
| 03/31/2020 | BIOGEN INC. | BIIB | 4,095,239 | -560,517 | 1,295,651,000 | -85,852,000 | $316.38 |
| 12/31/2019 | BIOGEN INC. | BIIB | 4,655,756 | 983,560 | 1,381,503,000 | 526,542,000 | $296.73 |
| 09/30/2019 | BIOGEN INC. | BIIB | 3,672,196 | -126,769 | 854,961,000 | -33,503,000 | $232.82 |
| 06/30/2019 | BIOGEN INC. | BIIB | 3,798,965 | -1,409,937 | 888,464,000 | -342,816,000 | $233.87 |
| 03/31/2019 | BIOGEN INC. | BIIB | 5,208,902 | -192,089 | 1,231,280,000 | -393,987,000 | $236.38 |
| 12/31/2018 | BIOGEN INC. | BIIB | 5,400,991 | -133,019 | 1,625,267,000 | -329,954,000 | $300.92 |
| 09/30/2018 | BIOGEN INC. | BIIB | 5,534,010 | 473,880 | 1,955,221,000 | 486,568,000 | $353.31 |
| 06/30/2018 | BIOGEN INC. | BIIB | 5,060,130 | -13,675 | 1,468,653,000 | 79,343,000 | $290.24 |
| 03/31/2018 | BIOGEN INC. | BIIB | 5,073,805 | -35,457 | 1,389,310,000 | -238,349,000 | $273.82 |
| 12/31/2017 | BIOGEN INC. | BIIB | 5,109,262 | -58,400 | 1,627,659,000 | 9,560,000 | $318.57 |
| 09/30/2017 | BIOGEN INC. | BIIB | 5,167,662 | -60,818 | 1,618,099,000 | 199,298,000 | $313.12 |
| 06/30/2017 | BIOGEN INC. | BIIB | 5,228,480 | -483,875 | 1,418,801,000 | -143,071,000 | $271.36 |
| 03/31/2017 | BIOGEN INC. | BIIB | 5,712,355 | -131,919 | 1,561,872,000 | -95,446,000 | $273.42 |
| 12/31/2016 | BIOGEN INC. | BIIB | 5,844,274 | 1,306,695 | 1,657,318,000 | 236,920,000 | $283.58 |
| 09/30/2016 | BIOGEN INC. | BIIB | 4,537,579 | 4,537,579 | 1,420,398,000 | 1,420,398,000 | $313.03 |
| 06/30/2016 | BIOGEN INC. | BIIB | 4,811,659 | 4,811,659 | 1,163,555,000 | 1,163,555,000 | $241.82 |
| 03/31/2016 | BIOGEN INC. | BIIB | 4,658,269 | -620,971 | 1,212,640,000 | -404,655,000 | $260.32 |
| 12/31/2015 | BIOGEN INC. | BIIB | 5,279,240 | -383,653 | 1,617,295,000 | -35,194,000 | $306.35 |
| 09/30/2015 | BIOGEN INC. | BIIB | 5,662,893 | 828,706 | 1,652,489,000 | -300,232,000 | $291.81 |
| 06/30/2015 | BIOGEN INC. | BIIB | 4,834,187 | 1,366,907 | 1,952,721,000 | 488,696,000 | $403.94 |
| 03/31/2015 | BIOGEN INC. | BIIB | 3,467,280 | 931,435 | 1,464,025,000 | 603,233,000 | $422.24 |
| 12/31/2014 | BIOGEN INC. | BIIB | 2,535,845 | 1,006,795 | 860,792,000 | 354,967,000 | $339.45 |
| 09/30/2014 | BIOGEN INC. | BIIB | 1,529,050 | -272,075 | 505,825,000 | -62,087,000 | $330.81 |
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