Activist 13D/13G Filings - Prothena Corporation plc (PRTA)

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‚Äôs 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
2023-03-10
09:30 am
Purchase
13GProthena Corporation plc
PRTA
FMR LLC5,264,847
10.015%
1,317,575increase
(+33.38%)
View
2023-02-14
4:19 pm
Purchase
13GProthena Corporation plc
PRTA
Avidity Partners Management LP2,953,000
5.7%
2,953,000increase
(New Position)
View
2023-02-14
2:32 pm
Sale
13GProthena Corporation plc
PRTA
SCULLY WILLIAM P2,463,000
4.82%
-67,500decrease
(-2.67%)
View
2023-02-14
12:38 pm
Purchase
13GProthena Corporation plc
PRTA
PRICE T ROWE ASSOCIATES INC3,205,903
6.3%
198,392increase
(+6.60%)
View
2023-02-09
12:31 pm
Purchase
13GProthena Corporation plc
PRTA
FMR LLC3,947,272
7.719%
1,305,531increase
(+49.42%)
View
2023-01-31
5:52 pm
Sale
13GProthena Corporation plc
PRTA
BlackRock Inc.
BLK
3,485,068
6.8%
-387,232decrease
(-10.00%)
View
2022-08-10
2:56 pm
Sale
13GProthena Corporation plc
PRTA
PRICE T ROWE ASSOCIATES INC3,007,511
6.4%
-2,941,350decrease
(-49.44%)
View
2022-06-27
12:01 pm
Purchase
13GProthena Corporation plc
PRTA
SCULLY WILLIAM P2,530,500
5.41%
2,530,500increase
(New Position)
View
2022-03-01
4:32 pm
Sale
13GProthena Corporation plc
PRTA
First Light Asset Management LLC1,805,038
3.87%
-1,124,302decrease
(-38.38%)
View
2022-02-14
2:34 pm
Purchase
13GProthena Corporation plc
PRTA
PRICE T ROWE ASSOCIATES INC5,948,861
12.7%
775,253increase
(+14.98%)
View
2022-02-09
10:24 am
Purchase
13GProthena Corporation plc
PRTA
FMR LLC2,641,741
5.669%
1,159,380increase
(+78.21%)
View
2022-02-03
4:41 pm
Purchase
13GProthena Corporation plc
PRTA
BlackRock Inc.
BLK
3,872,300
8.3%
179,330increase
(+4.86%)
View
2022-01-13
6:45 pm
Purchase
13DProthena Corporation plc
PRTA
EcoR1 Capital LLC11,584,280
24.9%
2,157,640increase
(+22.89%)
View
2021-06-10
12:44 pm
Purchase
13GProthena Corporation plc
PRTA
PRICE T ROWE ASSOCIATES INC5,173,608
11.7%
3,656,970increase
(+241.12%)
View
2021-02-17
8:14 pm
Purchase
13DProthena Corporation plc
PRTA
EcoR1 Capital Fund L.P.10,309,980
25.7%
10,309,980increase
(New Position)
View
2021-02-16
4:44 pm
Purchase
13GProthena Corporation plc
PRTA
First Light Asset Management LLC2,929,340
7.34%
2,929,340increase
(New Position)
View
2021-02-16
4:13 pm
Sale
13GProthena Corporation plc
PRTA
GREAT POINT PARTNERS LLC977,647
2.45%
-1,123,294decrease
(-53.47%)
View
2021-02-12
5:07 pm
Sale
13GProthena Corporation plc
PRTA
ORBIMED ADVISORS LLC1,485,458
3.72%
-802,981decrease
(-35.09%)
View
2021-02-08
10:31 am
Sale
13GProthena Corporation plc
PRTA
FMR LLC1,482,361
3.713%
-1,844,988decrease
(-55.45%)
View
2021-01-29
5:21 pm
Purchase
13GProthena Corporation plc
PRTA
BlackRock Inc.
BLK
3,692,970
9.3%
268,207increase
(+7.83%)
View
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