EcoR1 Capital, LLC - Dec 31, 2024 SCHEDULE 13D/A Report for Prothena Corporation plc Ordinary Shares (PRTA)

Filing Manager
EcoR1 Capital, LLC
Reporting Manager
EcoR1 Capital, LLC
Security
Prothena Corporation plc Ordinary Shares
Symbol
PRTA
Shares outstanding
53.9M shares
Disclosed Ownership
11.6M shares
Ownership
21.5%
Form type
SCHEDULE 13D/A
Date filed
1/3/2025, 07:45 PM
Date of event
Dec 31, 2024
Next filing
May 6, 2025
SEC
View on sec.gov

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
EcoR1 Capital, LLC 21.5% 11.6M 0 11.6M /s/ Oleg Nodelman Manager 0001587114
Oleg Nodelman 21.5% 11.6M 0 11.6M /s/ Oleg Nodelman Reporting person 0001454385
EcoR1 Capital Fund Qualified, L.P. 20.2% 10.8M 0 10.8M /s/ Oleg Nodelman Manager of the General Partner, EcoR1 Capital, LLC 0001598292