13D/13G Filings - Generation Bio Co. (GBIO)

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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Time period
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Reported
DateTime
Transaction
Date
Type Company
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev Report View
2025-02-12
09:28 am
Sale
2024-12-31 13G Generation Bio Co.
GBIO
FMR CORP 4,626,045
6.900%
-726,354decrease
(-13.57%)
Filing
History
2024-12-09
6:18 pm
Sale
2024-12-05 13G Generation Bio Co.
GBIO
BB BIOTECH AG 3,310,869
5.000%
-297,411decrease
(-8.24%)
Filing
History
2024-11-14
1:22 pm
Purchase
2024-09-30 13G Generation Bio Co.
GBIO
PRICE T ROWE ASSOCIATES INC 9,351,590
14.000%
2,425,416increase
(+35.02%)
Filing
History
2024-11-08
2:17 pm
Unchanged
2024-09-30 13G Generation Bio Co.
GBIO
BLACKROCK INC
BLK
3,415,998
5.100%
0
(Unchanged)
Filing
History
2024-10-23
5:04 pm
Purchase
2024-09-30 13G Generation Bio Co.
GBIO
BLACKROCK INC
BLK
3,415,998
5.100%
247,583increase
(+7.81%)
Filing
History
2024-02-14
10:03 am
Sale
2023-12-31 13G Generation Bio Co.
GBIO
PRICE T ROWE ASSOCIATES INC 6,926,174
10.500%
-334,872decrease
(-4.61%)
Filing
History
2024-02-13
06:17 am
Unchanged
2023-12-31 13G Generation Bio Co.
GBIO
BB BIOTECH AG 3,608,280
5.500%
0
(Unchanged)
Filing
History
2024-02-09
4:05 pm
Unchanged
2023-12-31 13G Generation Bio Co.
GBIO
Atlas Venture Fund X L.P. 7,111,939
10.800%
0
(Unchanged)
Filing
History
2024-02-09
09:03 am
Sale
2024-02-08 13G Generation Bio Co.
GBIO
FMR CORP 5,352,399
8.100%
-1,210,960decrease
(-18.45%)
Filing
History
2024-01-08
4:35 pm
Sale
2023-12-31 13G Generation Bio Co.
GBIO
BLACKROCK INC
BLK
3,168,415
4.800%
-539,652decrease
(-14.55%)
Filing
History
2023-12-11
09:09 am
Sale
2023-12-08 13G Generation Bio Co.
GBIO
FMR CORP 6,563,359
9.932%
-2,349,972decrease
(-26.36%)
Filing
History
2023-03-24
4:27 pm
Purchase
2023-03-24 13G Generation Bio Co.
GBIO
ModernaTX Inc. 5,859,375
8.900%
5,859,375increase
(New Position)
Filing
History
2023-02-14
4:18 pm
Sale
2022-12-31 13G Generation Bio Co.
GBIO
BB BIOTECH AG 3,608,280
6.100%
-244,900decrease
(-6.36%)
Filing
History
2023-02-14
4:06 pm
Sale
2022-12-31 13G Generation Bio Co.
GBIO
PFM Health Sciences, LP 2,903,192
4.900%
-110,520decrease
(-3.67%)
Filing
History
2023-02-14
12:40 pm
Purchase
2022-12-31 13G Generation Bio Co.
GBIO
T. Rowe Price Investment Management, Inc. 3,577,755
6.000%
3,577,755increase
(New Position)
Filing
History
2023-02-14
12:38 pm
Sale
2022-12-31 13G Generation Bio Co.
GBIO
PRICE T ROWE ASSOCIATES INC 7,261,046
12.200%
-1,386,075decrease
(-16.03%)
Filing
History
2023-02-09
11:19 am
Sale
2022-12-30 13G Generation Bio Co.
GBIO
The Vanguard Group 2,231,499
3.760%
-1,362,962decrease
(-37.92%)
Filing
History
2023-02-09
10:59 am
Purchase
2023-02-09 13G Generation Bio Co.
GBIO
FMR CORP 8,913,331
14.999%
376,869increase
(+4.41%)
Filing
History
2023-02-01
5:12 pm
Purchase
2022-12-31 13G Generation Bio Co.
GBIO
FARALLON CAPITAL PARTNERS LP 1,249,382
2.100%
1,249,382increase
(New Position)
Filing
History
2023-02-01
4:54 pm
Purchase
2022-12-31 13G Generation Bio Co.
GBIO
BLACKROCK INC
BLK
3,708,067
6.200%
540,411increase
(+17.06%)
Filing
History
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