Activist 13D/13G Filings - ImmunoGen Inc. (IMGN)

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
2024-02-14
5:01 pm
Purchase
13GImmunoGen Inc.
IMGN
RA CAPITAL MANAGEMENT L.P.26,916,027
9.990%
4,840,869increase
(+21.93%)
View
2024-02-14
4:26 pm
Sale
13GImmunoGen Inc.
IMGN
Redmile Group LLC16,423,922
5.900%
-3,472,531decrease
(-17.45%)
View
2024-02-13
5:06 pm
Purchase
13GImmunoGen Inc.
IMGN
VANGUARD GROUP INC25,466,950
9.130%
11,088,515increase
(+77.12%)
View
2024-02-07
07:56 am
Sale
13GImmunoGen Inc.
IMGN
ADAGE CAPITAL PARTNERS GP L.L.C.971,928
0.350%
-10,147,072decrease
(-91.26%)
View
2024-01-25
4:59 pm
Purchase
13GImmunoGen Inc.
IMGN
BlackRock Inc.
BLK
21,823,243
8.200%
3,807,241increase
(+21.13%)
View
2024-01-22
09:50 am
Sale
13GImmunoGen Inc.
IMGN
STATE STREET CORP
STT
8,075,671
3.020%
-9,432,442decrease
(-53.87%)
View
2023-02-14
4:45 pm
Sale
13GImmunoGen Inc.
IMGN
RA CAPITAL MANAGEMENT L.P.22,075,158
9.990%
-87,800decrease
(-0.40%)
View
2023-02-14
4:20 pm
Purchase
13GImmunoGen Inc.
IMGN
Redmile Group LLC19,896,453
8.600%
274,472increase
(+1.40%)
View
2023-02-10
09:44 am
Sale
13GImmunoGen Inc.
IMGN
Flynn James E6,358,314
2.880%
-8,421,276decrease
(-56.98%)
View
2023-02-09
11:22 am
Sale
13GImmunoGen Inc.
IMGN
VANGUARD GROUP INC14,378,435
6.510%
-753,317decrease
(-4.98%)
View
2023-02-09
11:18 am
Sale
13GImmunoGen Inc.
IMGN
FMR LLC1,197,223
0.542%
-11,077,599decrease
(-90.25%)
View
2023-02-08
1:59 pm
Purchase
13GImmunoGen Inc.
IMGN
STATE STREET CORP
STT
17,508,113
7.930%
12,161,687increase
(+227.47%)
View
2023-02-06
2:53 pm
Sale
13GImmunoGen Inc.
IMGN
WELLINGTON MANAGEMENT GROUP LLP9,226,708
4.180%
-4,675,790decrease
(-33.63%)
View
2023-02-03
4:27 pm
Purchase
13GImmunoGen Inc.
IMGN
BlackRock Inc.
BLK
18,016,002
8.200%
3,152,698increase
(+21.21%)
View
2022-12-27
4:30 pm
Sale
13GImmunoGen Inc.
IMGN
ADAGE CAPITAL PARTNERS GP L.L.C.11,119,000
5.040%
-467,193decrease
(-4.03%)
View
2022-05-19
4:50 pm
Purchase
13GImmunoGen Inc.
IMGN
Flynn James E14,779,590
6.700%
14,779,590increase
(New Position)
View
2022-04-04
4:30 pm
Purchase
13GImmunoGen Inc.
IMGN
ADAGE CAPITAL PARTNERS GP L.L.C.11,586,193
5.250%
11,586,193increase
(New Position)
View
2022-03-11
2:13 pm
Unchanged
13GImmunoGen Inc.
IMGN
BlackRock Inc.
BLK
14,863,304
6.900%
0
(Unchanged)
View
2022-02-14
5:07 pm
Purchase
13GImmunoGen Inc.
IMGN
Redmile Group LLC19,621,981
8.500%
9,093,802increase
(+86.38%)
View
2022-02-14
4:11 pm
Purchase
13GImmunoGen Inc.
IMGN
RA CAPITAL MANAGEMENT L.P.22,162,958
9.990%
3,745,500increase
(+20.34%)
View
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