Prothena Corporation plc
Income Statement
| Line Item | Jun 2026 | Mar 2026 | Dec 2025 | Sep 2025 | Jun 2025 | Mar 2025 | Dec 2024 | Sep 2024 |
|---|---|---|---|---|---|---|---|---|
| Revenue | $1.0M | $51.1M | $21.0K | $2.4M | $4.4M | $2.8M | $2.1M | $970.0K |
| Cost of Revenue | — | — | — | — | — | — | — | — |
| Gross Profit | — | — | — | — | — | — | — | — |
| Gross Margin | — | — | — | — | — | — | — | — |
| Operating Expenses | ||||||||
| Research & Development | $8.8M | $12.6M | $14.6M | $28.9M | $40.5M | $50.8M | $50.2M | $50.7M |
| SG&A Expense | $10.9M | $12.7M | $12.6M | $13.2M | $15.9M | $17.6M | $16.8M | $16.8M |
| Operating Income | $-21.1M | $30.0M | $-24.2M | $-40.2M | $-84.6M | $-65.6M | $-64.9M | $-66.5M |
| Operating Margin | -2,089.2% | 58.8% | -115,252.4% | -1,666.3% | -1,914.4% | -2,319.0% | -3,056.9% | -6,857.0% |
| Interest Expense | — | — | — | — | — | — | — | — |
| Pretax Income | $-18.6M | $32.7M | $-21.6M | $-36.9M | $-81.0M | $-61.4M | $-59.5M | $-59.8M |
| Income Tax Expense | $2.0K | $1.0K | $10.0K | $-371.0K | $44.8M | $-1.2M | $-1.5M | $-835.0K |
| Net Income | $-18.6M | $32.7M | $-21.6M | $-36.5M | $-125.8M | $-60.2M | $-58.0M | $-59.0M |
| Net Margin | -1,839.9% | 64.1% | -102,804.8% | -1,513.1% | -2,845.4% | -2,128.5% | -2,729.9% | -6,082.6% |
| EPS (Basic) | $-0.36 | $0.61 | $-0.39 | $-0.68 | $-2.34 | $-1.12 | $-1.07 | $-1.10 |
| EPS (Diluted) | $-0.36 | $0.60 | $-0.39 | $-0.68 | $-2.34 | $-1.12 | $-1.05 | $-1.10 |
| Shares Outstanding (Basic) | 52.1M | 53.7M | 53.8M | 53.8M | 53.8M | 53.8M | 53.8M | 53.8M |
| Shares Outstanding (Diluted) | 52.1M | 54.1M | 53.8M | 53.8M | 53.8M | 53.8M | 53.8M | 53.8M |
| Dividends Per Share | — | — | — | — | — | — | — | — |