Activist 13D/13G Filings - BIOGEN INC. (BIIB)

Real time Form 13D and 13G transaction reports:

  • Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
  • Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
  • Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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Time period
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Reported
DateTime
TypeCompany
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev ReportFiling
2024-11-04
11:20 am
Purchase
13GBIOGEN INC.
BIIB
VANGUARD GROUP INC16,677,806
11.440%
2,156,464increase
(+14.85%)
View
2024-10-16
12:11 pm
Purchase
13GBIOGEN INC.
BIIB
STATE STREET CORP
STT
7,346,505
5.000%
7,346,505increase
(New Position)
View
2024-08-16
6:40 pm
Sale
13GSANGAMO THERAPEUTICS INC
SGMO
BIOGEN INC.
BIIB
3,250,000
1.600%
-11,402,466decrease
(-77.82%)
View
2024-08-07
4:10 pm
Purchase
13GBIOGEN INC.
BIIB
BlackRock Inc.
BLK
14,646,751
10.100%
400,431increase
(+2.81%)
View
2024-02-12
7:11 pm
Sale
13GSANGAMO THERAPEUTICS INC
SGMO
BIOGEN INC.
BIIB
14,652,466
8.260%
-9,767,691decrease
(-40.00%)
View
2024-02-12
7:07 pm
Sale
13GDenali Therapeutics Inc.
DNLI
BIOGEN INC.
BIIB
12,751,365
9.230%
-558,878decrease
(-4.20%)
View
2024-02-12
4:01 pm
Purchase
13GBIOGEN INC.
BIIB
PRIMECAP MANAGEMENT CO16,264,481
11.220%
563,905increase
(+3.59%)
View
2024-02-12
11:21 am
Purchase
13GBIOGEN INC.
BIIB
VANGUARD GROUP INC14,521,342
10.020%
114,463increase
(+0.79%)
View
2024-02-12
10:50 am
Purchase
13GBIOGEN INC.
BIIB
VANGUARD GROUP INC14,406,879
9.940%
2,430,256increase
(+20.29%)
View
2024-01-24
2:27 pm
Sale
13GBIOGEN INC.
BIIB
BlackRock Inc.
BLK
14,246,320
9.800%
-13,817decrease
(-0.10%)
View
2023-09-28
4:38 pm
Sale
13DREATA PHARMACEUTICALS INC
RETA
BIOGEN INC.
BIIB
0
0.000%
-8,936,791decrease
(Position Closed)
View
2023-08-07
5:21 pm
Purchase
13DREATA PHARMACEUTICALS INC
RETA
BIOGEN INC.
BIIB
8,936,791
23.400%
8,936,791increase
(New Position)
View
2023-02-09
4:01 pm
Sale
13GBIOGEN INC.
BIIB
PRIMECAP MANAGEMENT CO15,700,576
10.900%
-56,829decrease
(-0.36%)
View
2023-02-09
11:12 am
Purchase
13GBIOGEN INC.
BIIB
VANGUARD GROUP INC11,976,623
8.320%
439,324increase
(+3.81%)
View
2023-01-24
1:56 pm
Purchase
13GBIOGEN INC.
BIIB
BlackRock Inc.
BLK
14,260,137
9.900%
523,183increase
(+3.81%)
View
2022-03-07
2:51 pm
Unchanged
13GBIOGEN INC.
BIIB
BlackRock Inc.
BLK
13,736,954
9.400%
0
(Unchanged)
View
2022-02-10
12:21 pm
Sale
13GBIOGEN INC.
BIIB
PRIMECAP MANAGEMENT CO15,757,405
10.730%
-64,661decrease
(-0.41%)
View
2022-02-09
3:33 pm
Sale
13GBIOGEN INC.
BIIB
VANGUARD GROUP INC11,537,299
7.850%
-359,211decrease
(-3.02%)
View
2022-02-08
5:05 pm
Purchase
13GBIOGEN INC.
BIIB
BlackRock Inc.
BLK
13,736,954
9.400%
317,353increase
(+2.36%)
View
2021-02-12
12:02 pm
Sale
13GBIOGEN INC.
BIIB
PRIMECAP MANAGEMENT CO15,822,066
10.280%
-65,313decrease
(-0.41%)
View
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