ALNYLAM PHARMACEUTICALS INC. (ALNY) - 13D/13G Filings

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 have beem 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
Transaction
Date
TypeCompany
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev ReportView
2026-05-14
1:55 pm
Sale
2026-03-3113GALYNLAM PHARMACEUTICALS INC
ALNY
Capital World Investors10,916,799
8.200%
-5,482,090decrease
(-33.43%)
Filing
History
2026-05-14
10:19 am
Purchase
2026-03-3113GALYNLAM PHARMACEUTICALS INC
ALNY
Capital Research Global Investors9,471,181
7.100%
2,502,668increase
(+35.91%)
Filing
History
2026-05-06
11:00 am
Sale
2026-03-3113GALYNLAM PHARMACEUTICALS INC
ALNY
FMR LLC14,640,525
11.000%
-2,193,570decrease
(-13.03%)
Filing
History
2026-04-29
4:44 pm
Purchase
2026-03-3113GALYNLAM PHARMACEUTICALS INC
ALNY
VANGUARD CAPITAL MANAGEMENT LLC7,104,536
5.350%
7,104,536increase
(New Position)
Filing
History
2026-03-26
3:24 pm
Sale
2026-03-1313GALYNLAM PHARMACEUTICALS INC
ALNY
VANGUARD GROUP INC0
0.000%
-13,056,605decrease
(Position Closed)
Filing
History
2025-11-05
11:26 am
Purchase
2025-09-3013GALYNLAM PHARMACEUTICALS INC
ALNY
FMR LLC16,834,095
12.800%
2,078,491increase
(+14.09%)
Filing
History
2025-04-07
11:51 am
Purchase
2025-03-3113GALYNLAM PHARMACEUTICALS INC
ALNY
VANGUARD GROUP INC13,056,605
10.030%
1,112,710increase
(+9.32%)
Filing
History
2025-02-13
2:14 pm
Purchase
2024-12-3113GALYNLAM PHARMACEUTICALS INC
ALNY
Capital Research Global Investors6,968,513
5.400%
6,968,513increase
(New Position)
Filing
History
2024-11-12
09:50 am
Purchase
2024-11-0813GALYNLAM PHARMACEUTICALS INC
ALNY
FMR LLC14,755,604
11.484%
1,490,226increase
(+11.23%)
Filing
History
2024-11-08
10:34 am
Sale
2024-09-3013GALYNLAM PHARMACEUTICALS INC
ALNY
Wellington Management Group LLP5,018,779
3.910%
-2,234,128decrease
(-30.80%)
Filing
History
2024-08-12
09:40 am
Purchase
2024-08-0913GALYNLAM PHARMACEUTICALS INC
ALNY
FMR LLC13,265,378
10.484%
2,922,981increase
(+28.26%)
Filing
History
2024-07-05
10:24 am
Sale
2024-06-2813GALYNLAM PHARMACEUTICALS INC
ALNY
BAILLIE GIFFORD & CO6,032,656
4.770%
-934,441decrease
(-13.41%)
Filing
History
2024-02-13
4:59 pm
Purchase
2023-12-2913GALYNLAM PHARMACEUTICALS INC
ALNY
VANGUARD GROUP INC11,943,895
9.520%
436,779increase
(+3.80%)
Filing
History
2024-02-09
6:14 pm
Sale
2024-02-0713GALYNLAM PHARMACEUTICALS INC
ALNY
Capital World Investors16,398,889
13.100%
-195,069decrease
(-1.18%)
Filing
History
2024-02-09
08:40 am
Purchase
2023-12-2913GALYNLAM PHARMACEUTICALS INC
ALNY
Wellington Management Group LLP7,252,907
5.780%
991,265increase
(+15.83%)
Filing
History
2024-02-09
08:35 am
Sale
2024-02-0813GALYNLAM PHARMACEUTICALS INC
ALNY
FMR LLC10,342,397
8.239%
-3,200,428decrease
(-23.63%)
Filing
History
2024-01-29
12:18 pm
Sale
2023-12-2913GALYNLAM PHARMACEUTICALS INC
ALNY
BAILLIE GIFFORD & CO6,967,097
5.550%
-2,440,774decrease
(-25.94%)
Filing
History
2024-01-26
5:25 pm
Sale
2023-12-3113GALYNLAM PHARMACEUTICALS INC
ALNY
BlackRock Inc.
BLK
8,546,557
6.800%
-119,145decrease
(-1.37%)
Filing
History
2023-02-14
12:38 pm
Sale
2022-12-3113GALYNLAM PHARMACEUTICALS INC
ALNY
T. Rowe Price Associates, Inc.4,074,144
3.300%
-2,461,224decrease
(-37.66%)
Filing
History
2023-02-13
2:49 pm
Purchase
2023-02-1413GALYNLAM PHARMACEUTICALS INC
ALNY
Capital World Investors16,593,958
13.500%
3,777,181increase
(+29.47%)
Filing
History
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