PRTA
Prothena Corporation plc
NASDAQ: PRTA · HEALTHCARE · BIOTECHNOLOGY
$10.87
-5.56% today
Updated 2026-04-29
Market cap
$619.62M
P/E ratio
—
P/S ratio
63.98x
EPS (TTM)
$-4.53
Dividend yield
—
52W range
$4 – $12
Volume
0.5M
Prothena Corporation plc (PRTA) Financial statements
SEC filings — annual and quarterly data.
Cash flow — annual
| Item | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Operating cash flow | $-9.08M | $-19.70M | $-42.07M | $-32.10M | $-683000.00 | $-62.45M | $-117.27M | $-131.18M | $-28.28M | $-52.97M | $-80.36M | $92.61M | $-108.82M | $-133.91M | $-150.05M | $-163.58M |
| Capital expenditures | $2.61M | $595000.00 | $1.30M | $564000.00 | $526000.00 | $1.38M | $16.64M | $3.63M | $1.77M | $555000.00 | $196000.00 | $575000.00 | $464000.00 | $2.81M | $298000.00 | $138000.00 |
| Depreciation | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Stock-based comp | $1.60M | $2.97M | $6.10M | $3.13M | $5.60M | $10.41M | $24.93M | $26.76M | $27.01M | $23.59M | $22.01M | $24.66M | $31.32M | $40.91M | $45.96M | $37.64M |
| Free cash flow | $-11.69M | $-20.29M | $-43.37M | $-32.66M | $-1.21M | $-63.84M | $-133.91M | $-134.81M | $-30.04M | $-53.52M | $-80.56M | $92.03M | $-109.28M | $-136.72M | $-150.35M | $-163.72M |
| Investing cash flow | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Financing cash flow | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends paid | — | — | — | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | — | — | — | — | — | — | — | — |
| Share repurchases | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Debt repayment | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Net change in cash | — | — | — | $51.82M | $116.90M | $77.01M | $20.39M | $30.70M | $10.04M | $-53.29M | $-80.34M | $282.36M | — | — | — | — |