Prothena Corporation plc
PRTANASDAQHealthcare● Active
$8.56
$-0.23(-2.62%)
Market Cap$448143709
P/E Ratio—
52W High$11.8
52W Low$4.95
Prothena Corporation plc (PRTA) · Cash Flow
Annual, quarterly, or TTM views · SEC 10-K & 10-Q via FMP · adjust period and M/B/T below.
FMP · PRTA · as of 2026-06-10
Financial statements
Operating CF · CapEx · Free Cash Flow
| Breakdown | 2025-12 | 2024-12 | 2023-12 | 2022-12 | 2021-12 |
|---|---|---|---|---|---|
| Operating Activities | |||||
| Net Income | ($244.09M) | ($122.31M) | ($147.03M) | ($116.95M) | $66.97M |
| Depreciation & Amort. | $0.90M | $0.89M | $0.93M | $0.74M | $1.11M |
| Stock-Based Comp. | $37.64M | $45.96M | $40.91M | $31.32M | $24.66M |
| Change in Working Capital | ($4.17M) | ($67.94M) | ($20.53M) | ($18.80M) | ($10.40M) |
| Net Cash from Operations | ($163.58M) | ($150.05M) | ($133.91M) | ($108.82M) | $92.61M |
| Investing Activities | |||||
| Capital Expenditure | ($0.14M) | ($0.30M) | ($2.81M) | ($0.46M) | ($0.57M) |
| Purchases of Investments | $0.00M | $0.00M | $0.00M | $0.00M | $0.00M |
| Sales of Investments | $0.00M | $0.00M | $0.00M | $0.00M | $0.00M |
| Net Cash from Investing | ($0.14M) | ($0.30M) | ($2.77M) | ($0.46M) | ($0.57M) |
| Financing Activities | |||||
| Common Stock Repurchased | $0.00M | ($0.35M) | $0.00M | $0.00M | $0.00M |
| Dividends Paid | $0.00M | $0.00M | $0.00M | $0.00M | $0.00M |
| Debt Issued / Repaid | $0.00M | $0.00M | $0.00M | $0.00M | $0.00M |
| Net Cash from Financing | ($0.14M) | $1.55M | $45.10M | $241.46M | $190.33M |
| Free Cash Flow | |||||
| Free Cash Flow | ($163.72M) | ($150.35M) | ($136.72M) | ($109.28M) | $92.03M |
| FCF Margin %(computed) | — | -111.24% | -149.63% | -202.74% | 45.88% |
Data source: Financial Modeling Prep · Last updated: 2026-06-10 · USD · M
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About Prothena Corporation plc (PRTA) Cash Flow Statement
Prothena Corporation plc generated operating cash flow of ($0.16B) and free cash flow of ($0.16B) for 2025 — a FCF margin of -1690.60%. Capital expenditure was ($0.00B).
Frequently asked questions
PRTA · 4 questionsProthena Corporation plc generated free cash flow of ($0.16B) for 2025, down 8.9% year-over-year.
PRTA free cash flowFCF margincash flow yield
· Source: FMP /stable/cash-flow-statement · SEC EDGAR Form 10-K & 10-Q · As of 2026-06-10