Company facts
- Industry
- Pharmaceutical Preparations
- Headquarters
- Dublin 2
- Most recent report
- 10-Q, filed Aug 6, 2026
- Filings on record
- 1,003+ filings
- On EDGAR
- CIK 1559053
- Fiscal year ends
- December
- Filer status
- Accelerated filer
Financials 8 of 57
News 8 of 159
Prospectuses and Registrations 8 of 39
- POS AM Post-effective amendment to a registration Feb 27, 2026
- S-8 Registration statement for an employee plan Aug 8, 2025
- S-8 Registration statement for an employee plan Aug 8, 2024
- S-3ASR Automatic shelf registration Feb 22, 2024
- S-8 Registration statement for an employee plan Aug 3, 2023
- 424B5 Prospectus supplement for an offering Dec 16, 2022
- 424B5 Prospectus supplement for an offering Dec 13, 2022
- S-8 Registration statement for an employee plan Aug 10, 2022
Proxies 8 of 47
- DEFA14A Extra proxy material Mar 27, 2026
- DEF 14A Proxy statement for a shareholder vote Mar 27, 2026
- DEFA14A Extra proxy material Nov 6, 2025
- DEFA14A Extra proxy material Oct 7, 2025
- DEF 14A Proxy statement for a shareholder vote Oct 7, 2025
- PRE 14A Preliminary proxy statement Sep 25, 2025
- DEFA14A Extra proxy material Mar 28, 2025
- DEF 14A Proxy statement for a shareholder vote Mar 28, 2025
Ownership 8 of 658
- SCHEDULE 13G/A Large holder reported a passive stake, amended Aug 19, 2026
- 3 Insider reported their initial holding Aug 18, 2026
- 4 Insider reported a trade Aug 18, 2026
- SCHEDULE 13G/A Large holder reported a passive stake, amended Aug 14, 2026
- 4 Insider reported a trade Aug 11, 2026
- 3 Insider reported their initial holding Aug 11, 2026
- 4 Insider reported a trade Aug 10, 2026
- SCHEDULE 13G/A Large holder reported a passive stake, amended Aug 6, 2026
Other 8 of 43
- ARS Annual report sent to shareholders Mar 27, 2026
- EFFECT Notice that a registration became effective Mar 2, 2026
- POSASR Feb 27, 2026
- ARS Annual report sent to shareholders Mar 28, 2025
- ARS Annual report sent to shareholders Mar 29, 2024
- UPLOAD Comment letter from SEC staff Aug 23, 2023
- CORRESP Reply to SEC staff Aug 4, 2023
- UPLOAD Comment letter from SEC staff Jul 25, 2023
Everything here comes from Prothena Corp Public Ltd Co's own filings on SEC EDGAR. The filing list is rechecked every hour.