PROTHENA CORP PUBLIC LTD CO
Financial highlights
| Metric | FY 12/31/25 | FY 12/31/24 | FY 12/31/23 | FY 12/31/22 | FY 12/31/21 |
|---|---|---|---|---|---|
| Income Statement | |||||
| Revenue | $9.7M | $135.2M | $91.4M | $53.9M | $200.6M |
| Research and development | $134.9M | $222.5M | $220.6M | $135.6M | $82.3M |
| Operating expenses | $224.3M | $289.7M | $282.4M | $185.5M | $128.6M |
| Operating income | -$214.6M | -$154.6M | -$191.0M | -$131.6M | $72.0M |
| Pretax income | -$200.8M | -$128.9M | -$160.5M | -$125.6M | $71.9M |
| Income tax expense | $43.3M | -$6.6M | -$13.5M | -$8.7M | $4.9M |
| Net income | -$244.1M | -$122.3M | -$147.0M | -$116.9M | $67.0M |
| Balance Sheet | |||||
| Cash and equivalents | $307.5M | $471.4M | $618.8M | $710.4M | $579.1M |
| Current assets | $315.2M | $485.4M | $639.3M | $719.1M | $584.8M |
| Total assets | $326.8M | $547.1M | $696.4M | $758.0M | $609.4M |
| Current liabilities | $40.8M | $48.5M | $56.9M | $50.1M | $33.5M |
| Total liabilities | $46.3M | $60.2M | $135.0M | $136.0M | $143.3M |
| Stockholders' equity | $280.5M | $486.9M | $561.4M | $622.0M | $466.0M |
| Cash Flow Statement | |||||
| Cash from operations | -$163.6M | -$150.1M | -$133.9M | -$108.8M | $92.6M |
| Depreciation and amortization | $895,000 | $893,000 | $928,000 | $744,000 | $1.1M |
| Stock-based compensation | $37.6M | $46.0M | $40.9M | $31.3M | $24.7M |
Shares outstanding 52.4M · Free float 56.7%
Annual filing data through FY ended December 31, 2025; float as of July 14, 2026.