Prothena Corp PLC

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Prothena Corp PLC
TickerPRTA
CIK #0001559053
CUSIPG72800108
SectorLife Sciences - Pharmaceutical Preparations
Address25-28 North Wall Quay, Dublin, DUBLIN 1
Source [EDGAR]
CIK Filing 2011 - 2025
[0001559053] 10-K
[0001559053] 10-Q
[0001559053] 3
[0001559053] 4
[0001559053] 5
[0001559053] 8-K
[0001559053] D
[0001559053] SC 13D
[0001559053] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Adar1 Capital Management LLC Prothena Corp Public Ltd Co [2025-08-14] 0.0
Logos Global Management LP Prothena Corp Public Ltd Co [2025-06-04] 0.0
Wellington Management Group LLP Prothena Corp Public Ltd Co [2024-11-08] 7.77
Fennell Todd W Prothena Corp Public Ltd Co [2024-02-14] 81945.85
Scully William P Prothena Corp Public Ltd Co [2024-02-14] 81946.53
State Street Corp Prothena Corp Public Ltd Co [2024-01-24] 5.14
Scully William P Prothena Corp Public Ltd Co [2022-06-27] 5.41
First Light Asset Management LLC Prothena Corp Public Ltd Co [2022-03-01] 3.87
FMR LLC Prothena Corp Public Ltd Co [2022-02-09] 0.0
Price T Rowe Associates Inc /MD/ Prothena Corp Public Ltd Co [2021-06-10] 11.7
First Light Asset Management LLC Prothena Corp Public Ltd Co [2021-02-16] 7.34
OrbiMed Advisors LLC Prothena Corp PLC [2020-02-14] 5.74
EcoR1 Capital LLC Prothena Corp PLC [2019-12-13] 23.6
EcoR1 Capital LLC Prothena Corp PLC [2019-08-26] 23.6
Great Point Partners LLC Prothena Corp PLC [2019-08-05] 5.18
Scopia Capital Management LP Prothena Corp PLC [2019-01-10] 11.6
Woodford Investment Management LLP Prothena Corp PLC [2015-10-09] 20.1
CF Woodford Investment Fund Prothena Corp PLC [2015-04-07] 11.0
Woodford Investment Management LLP Prothena Corp PLC [2015-02-26] 10.3
Vanguard Specialized Funds Prothena Corp PLC [2015-02-06] 6.07
BlackRock Inc Prothena Corp PLC [2015-02-02] 6.1
Adage Capital Partners GP LLC Prothena Corp PLC [2014-05-02] 4.73
Integrated Core Strategies US LLC Prothena Corp PLC [2014-03-07] 3.27
OrbiMed Advisors LLC Prothena Corp PLC [2014-02-13] 1.89
Price T Rowe Associates Inc /MD/ Prothena Corp PLC [2014-02-07] 6.6
RA Capital Management LLC Prothena Corp PLC [2013-08-27] 0.3
Wellington Management Co LLP Prothena Corp PLC [2013-02-14] 0.77
FMR LLC Prothena Corp PLC [2013-02-14] 0.0
Johnson & Johnson Prothena Corp PLC [2013-02-13] 14.82
[2013-02-01] None
Elan Corp PLC Prothena Corp PLC [2012-12-28] 18.0
Form 3/4/5 Filer 2011 - 2025
Prothena Corp Public Ltd Co
Kinney Gene G.
Malecek Michael J
Nguyen Tran
Smith Brandon S.
Swanson Chad J.
Walker Karin L
Zago Wagner M.
Cobb Paula K
Dunn William H. Jr.
Cooke Shane
Collier Richard T
Welch Daniel G
Selkoe Dennis J.
Kim Helen Susan
Ekman Lars
EcoR1 Capital, LLC
Scully William P
Ford David A
Karp Carol D.
Garren Hideki
Harfstrand Karl Anders Olof
Patel Sanjiv
Tripuraneni Radhika
Henney Christopher S
Nodelman OLEG
Homan Arthur W
Nickerson Tara
Noonberg Sarah B.
McNinch David B.
Koller Martin
Schenk Dale B.
PERRIGO Co plc
Elan Corp PLC
Elan Science One Ltd
Fawcett John Randall
Form 13F Holdings
Firm Period DFND Voting Shares
FMR LLC [2025-06-30] DFND 7,901,218 7,901,218
BlackRock, Inc. [2025-06-30] SOLE 3,807,782 3,939,398
Adar1 Capital Management LLC [2025-06-30] SOLE 3,375,009 3,375,009
Armistice Capital LLC [2025-06-30] SOLE 2,236,000 2,236,000
Vanguard Group Inc [2025-06-30] SOLE 0 2,114,993
Citadel Advisors LLC [2025-06-30] DFND 1,370,222 1,370,222
Palo Alto Investors LP [2025-06-30] SOLE 1,274,753 1,274,753
Federated Hermes Inc [2025-06-30] DFND 1,181,087 1,181,087
State Street Corp [2025-06-30] DFND 875,598 1,005,002
Susquehanna International Group LLP [2025-06-30] OTR 91,950 955,350
Morgan Stanley [2025-06-30] DFND 826,057 953,256
Geode Capital Management LLC [2025-06-30] DFND 933,446 933,446
Dimensional Fund Advisors LP [2025-06-30] SOLE 878,630 922,875
Rangeley Capital LLC [2025-06-30] SOLE 715,367 715,367
Jacobs Levy Equity Management Inc [2025-06-30] SOLE 606,429 693,154
Balyasny Asset Management LP [2025-06-30] SOLE 575,792 575,792
Trexquant Investment LP [2025-06-30] SOLE 552,826 552,826
Goldman Sachs Group Inc [2025-06-30] DFND 528,319 528,323
Cubist Systematic Strategies, LLC [2025-06-30] DFND 0 501,764
Rock Springs Capital Management LP [2025-06-30] SOLE 492,601 492,601
Granahan Investment Management LLC [2025-06-30] SOLE 417,909 461,082
Birchview Capital LP [2025-06-30] SOLE 451,019 451,019
Qube Research & Technologies Ltd [2025-06-30] SOLE 414,828 414,828
D. E. Shaw & Co., Inc. [2025-06-30] DFND 391,495 391,495
Mariner LLC [2025-06-30] SOLE 0 386,708
Northern Trust Corp [2025-06-30] DFND 327,625 328,088
Jane Street Group LLC [2025-06-30] DFND 260,453 316,653
Nordea Investment Management AB [2025-06-30] DFND 0 311,605
Schonfeld Strategic Advisors LLC [2025-06-30] SOLE 307,341 307,341
Charles Schwab Investment Management Inc [2025-06-30] SOLE 275,084 275,084
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