NASDAQ:PRTA
Prothena Corp. Public Ltd. Co.
Prothena Corp. Public Ltd. Co.'s revenue fell 92.8% in fiscal 2025 to $9.7M while operating margin fell to −2216.4%.Summary generated from Prothena Corp. Public Ltd. Co.'s SEC filings. Latest annual report filed Feb 27, 2026.
Key statistics
Fiscal 2025 from SEC filings. MethodologyRevenue (FY25)$9.7M
Revenue growth−92.8%
Revenue, 5-yr CAGR+62.6%
Gross marginn/a
Operating margin−2216.4%
Net margin−2520.6%
ROICn/a
Return on equity−63.6%
Debt / equityn/a
Free cash flown/a
FCF marginn/a
Share count change+0.1%
Financials
| Item | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Revenue | 201 | 54 | 91 | 135 | 10 |
| Operating income | 72 | −132 | −191 | −155 | −215 |
| Net income | 67 | −117 | −147 | −122 | −244 |
| Free cash flow | n/a | n/a | n/a | n/a | n/a |
Recent filings
- 4Insider transaction report
Oct 9, 2026 - 4Insider transaction report
Oct 6, 2026 - 8-KDirector or officer change
Oct 2, 2026 - 10-QQuarterly report for the period ended Jun 30, 2026
Aug 6, 2026 - 8-KResults of operations and financial condition
Aug 6, 2026 - 8-KResults of a shareholder vote
May 15, 2026 - 10-QQuarterly report for the period ended Mar 31, 2026
May 7, 2026 - 8-KResults of operations and financial condition
May 7, 2026