EcoR1 Capital, LLC - May 2, 2025 SCHEDULE 13D/A Report for PROTHENA CORP PUBLIC LTD CO Ordinary Shares (PRTA)

Filing Manager
EcoR1 Capital, LLC
Reporting Manager
EcoR1 Capital, LLC
Security
PROTHENA CORP PUBLIC LTD CO Ordinary Shares
Symbol
PRTA
Shares outstanding
53.6M shares
Disclosed Ownership
5.3M shares
Ownership
9.9%
Form type
SCHEDULE 13D/A
Date filed
5/6/2025, 07:08 PM
Date of event
May 2, 2025
Previous filing
Jan 3, 2025
Next filing
May 29, 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 9.9% 5.3M 0 5.3M /s/ Oleg Nodelman Manager 0001587114
Oleg Nodelman 9.9% 5.3M 0 5.3M /s/ Oleg Nodelman Reporting person 0001454385
EcoR1 Capital Fund Qualified, L.P. 9.2% 4.97M 0 4.97M /s/ Oleg Nodelman Manager of the General Partner, EcoR1 Capital, LLC 0001598292