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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Reported
DateTime		TypeCompany
Symbol		Filed By
Symbol		Shares Owned
% Owned		Shares Vs. Prev ReportFiling
2024-02-12
7:11 pm
Sale		13GSANGAMO THERAPEUTICS INC
SGMO		BIOGEN INC.
BIIB		14,652,466
8.26%		-9,767,691decrease
(-40.00%)		View
2024-02-12
7:07 pm
Sale		13GDENALI THERAPEUTICS INC
DNLI		BIOGEN INC.
BIIB		12,751,365
9.23%		-558,878decrease
(-4.20%)		View
2024-02-12
4:01 pm
Purchase		13GBIOGEN INC
BIIB		PRIMECAP MANAGEMENT CO16,264,481
11.22%		563,905increase
(+3.59%)		View
2024-02-12
11:21 am
Purchase		13GBIOGEN INC
BIIB		VANGUARD GROUP INC14,521,342
10.02%		114,463increase
(+0.79%)		View
2024-02-12
10:50 am
Purchase		13GBIOGEN INC
BIIB		VANGUARD GROUP INC14,406,879
9.94%		2,430,256increase
(+20.29%)		View
2024-01-24
2:27 pm
Sale		13GBIOGEN INC
BIIB		BlackRock Inc.
BLK		14,246,320
9.8%		-13,817decrease
(-0.10%)		View
2023-09-28
4:38 pm
Sale		13DREATA PHARMACEUTICALS INC
RETA		BIOGEN INC.
BIIB		0
0%		-8,936,791decrease
(Position Closed)		View
2023-08-07
5:21 pm
Purchase		13DREATA PHARMACEUTICALS INC
RETA		BIOGEN INC.
BIIB		8,936,791
23.4%		8,936,791increase
(New Position)		View
2023-02-09
4:01 pm
Sale		13GBIOGEN INC
BIIB		PRIMECAP MANAGEMENT CO15,700,576
10.9%		-56,829decrease
(-0.36%)		View
2023-02-09
11:12 am
Purchase		13GBIOGEN INC
BIIB		VANGUARD GROUP INC11,976,623
8.32%		439,324increase
(+3.81%)		View
2023-01-24
1:56 pm
Purchase		13GBIOGEN INC
BIIB		BlackRock Inc.
BLK		14,260,137
9.9%		523,183increase
(+3.81%)		View
2022-03-07
2:51 pm
Unchanged		13GBIOGEN INC
BIIB		BlackRock Inc.
BLK		13,736,954
9.4%		0
(Unchanged)		View
2022-02-10
12:21 pm
Sale		13GBIOGEN INC
BIIB		PRIMECAP MANAGEMENT CO15,757,405
10.73%		-64,661decrease
(-0.41%)		View
2022-02-09
3:33 pm
Sale		13GBIOGEN INC
BIIB		VANGUARD GROUP INC11,537,299
7.85%		-359,211decrease
(-3.02%)		View
2022-02-08
5:05 pm
Purchase		13GBIOGEN INC
BIIB		BlackRock Inc.
BLK		13,736,954
9.4%		317,353increase
(+2.36%)		View
2021-02-12
12:02 pm
Sale		13GBIOGEN INC
BIIB		PRIMECAP MANAGEMENT CO15,822,066
10.28%		-65,313decrease
(-0.41%)		View
2021-02-10
10:39 am
Sale		13GBIOGEN INC
BIIB		VANGUARD GROUP INC11,896,510
7.73%		-1,974,028decrease
(-14.23%)		View
2021-01-28
5:56 pm
Sale		13GBIOGEN INC
BIIB		BlackRock Inc.
BLK		13,419,601
8.7%		-2,239,040decrease
(-14.30%)		View
2021-01-11
4:19 pm
Purchase		13GSAGE THERAPEUTICS INC
SAGE		BIOGEN INC.
BIIB		6,241,473
10.7%		6,241,473increase
(New Position)		View
2020-12-09
5:00 pm
Purchase		13GBIOGEN INC
BIIB		PRIMECAP MANAGEMENT CO15,887,379
10.32%		697,898increase
(+4.59%)		View
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