Prothena Corp Public Ltd Co SEC filings PRTA
Prothena Corp Public Ltd Co has 1,006 filings in SEC EDGAR's recent list, going back to Jan 31, 2013. Its latest annual report, Form ARS, was filed on Mar 27, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| ARS | Annual report to shareholders | Mar 27, 2026 | Dec 31, 2025 |
| 10-K | Annual report | Feb 27, 2026 | Dec 31, 2025 |
| ARS | Annual report to shareholders | Mar 28, 2025 | Dec 31, 2024 |
| 10-K | Annual report | Feb 27, 2025 | Dec 31, 2024 |
| ARS | Annual report to shareholders | Mar 29, 2024 | Dec 31, 2023 |
| 10-K | Annual report | Feb 22, 2024 | Dec 31, 2023 |
| ARS | Annual report to shareholders | Mar 31, 2023 | Dec 31, 2022 |
| 10-K | Annual report | Feb 28, 2023 | Dec 31, 2022 |
| 10-K | Annual report | Feb 25, 2022 | Dec 31, 2021 |
| 10-K | Annual report | Feb 26, 2021 | Dec 31, 2020 |
| 10-K | Annual report | Mar 3, 2020 | Dec 31, 2019 |
| 10-K | Annual report | Mar 15, 2019 | Dec 31, 2018 |
| 10-K | Annual report | Feb 26, 2018 | Dec 31, 2017 |
| 10-K | Annual report | Feb 27, 2017 | Dec 31, 2016 |
| 10-K | Annual report | Feb 25, 2016 | Dec 31, 2015 |
| 10-K | Annual report | Mar 13, 2015 | Dec 31, 2014 |
| 10-K/A | Amended annual report | Jun 6, 2014 | Dec 31, 2013 |
| 10-K | Annual report | Mar 7, 2014 | Dec 31, 2013 |
| 10-K | Annual report | Mar 29, 2013 | Dec 31, 2012 |
Showing 19 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- PRTA (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- Ireland
- Headquarters
- Dublin 2, Ireland
- SEC filer status
- Accelerated filer
- SEC CIK
- 1559053
- Former names
- Prothena Corp plc (until May 22, 2020); Neotope Corp Ltd (until Oct 1, 2012)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.