0001567619-21-006927.txt : 20210325 0001567619-21-006927.hdr.sgml : 20210325 20210325111410 ACCESSION NUMBER: 0001567619-21-006927 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210324 FILED AS OF DATE: 20210325 DATE AS OF CHANGE: 20210325 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: EcoR1 Capital, LLC CENTRAL INDEX KEY: 0001587114 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-35676 FILM NUMBER: 21770932 BUSINESS ADDRESS: STREET 1: 357 TEHAMA STREET #3 CITY: SAN FRANCISCO STATE: CA ZIP: 94103 BUSINESS PHONE: 415-448-6534 MAIL ADDRESS: STREET 1: 357 TEHAMA STREET #3 CITY: SAN FRANCISCO STATE: CA ZIP: 94103 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: PROTHENA CORP PUBLIC LTD CO CENTRAL INDEX KEY: 0001559053 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 000000000 STATE OF INCORPORATION: L2 FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 77 SIR JOHN ROGERSON'S QUAY, BLOCK C STREET 2: GRAND CANAL DOCKLANDS CITY: DUBLIN 2 STATE: L2 ZIP: D02 T804 BUSINESS PHONE: 011-353-1-236-2500 MAIL ADDRESS: STREET 1: 77 SIR JOHN ROGERSON'S QUAY, BLOCK C STREET 2: GRAND CANAL DOCKLANDS CITY: DUBLIN 2 STATE: L2 ZIP: D02 T804 FORMER COMPANY: FORMER CONFORMED NAME: Prothena Corp plc DATE OF NAME CHANGE: 20121102 FORMER COMPANY: FORMER CONFORMED NAME: Neotope Corp Ltd DATE OF NAME CHANGE: 20120926 4 1 doc1.xml FORM 4 X0306 4 2021-03-24 0 0001559053 PROTHENA CORP PUBLIC LTD CO PRTA 0001587114 EcoR1 Capital, LLC 357 TEHAMA STREET #3 SAN FRANCISCO CA 94103 0 0 1 0 Ordinary Shares 2021-03-24 4 P 0 875000 20.75 A 11034280 I See Note 1 The filing persons (the "Filers") are EcoR1 Capital, LLC ("EcoR1"), Oleg Nodelman and EcoR1 Capital Fund Qualified, L.P. ("Qualified Fund"). EcoR1 is the general partner and investment adviser of private funds, including Qualified Fund (collectively, the "Funds"). Mr. Nodelman is the manager and controlling owner of EcoR1. EcoR1 is filing this Form 4 for itself, Mr. Nodelman and Qualified Fund. The Filers are filing this Form 4 jointly, but not as a group, and each expressly disclaims membership in a group, within the meaning of Rule 13d-5(b) under the Securities Exchange Act of 1934, as amended. The Funds hold these securities directly for the benefit of their investors. EcoR1 indirectly beneficially owns them as the investment adviser to the Funds, and Mr. Nodelman indirectly beneficially owns them as the control person of EcoR1. The Filers disclaim beneficial ownership of such securities except to the extent of their pecuniary interest therein. Qualified Fund purchased 746,500 of the Ordinary Shares purchased in this transaction. After this transaction, Qualified Fund owned 9,275,216 Ordinary Shares. Oleg Nodelman, Manager of EcoR1 Capital, LLC 2021-03-25