PRTA
Prothena Corporation plc
8.60$
+1.4%
vs. previous close
Closing price · As of: Sep 18, 2026
Statements
Cash Flow
Prothena Corporation plc (PRTA) by the numbers: income statement, balance sheet and cash flow, by year or by quarter. In the most recent period (2025), "Operating Cash Flow" came in at -164 million USD. Tick rows to compare them in a chart.
All figures in millions of USD.
Tick rows to compare them in a chart (up to 4)
| Line item | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| -0.7 | -62 | -117 | -131 | -28 | -53 | -80 | 93 | -109 | -134 | -150 | -164 | |
| 0.7 | 0.8 | 2.4 | 3.1 | 3.2 | 6.8 | 1.5 | 1.1 | 0.7 | 0.9 | 0.9 | 0.9 | |
| 5.6 | 10 | 25 | 27 | 27 | 24 | 22 | 25 | 31 | 41 | 46 | 38 | |
| 4.3 | 5.9 | 21 | 22 | -1.0 | -1.2 | -1.7 | 4.6 | 20 | – | – | – | |
| 1.4 | 11 | 19 | -7.2 | 94 | -4.4 | 3.5 | -10 | -19 | -21 | -68 | -4.2 | |
| 0.5 | 1.4 | 17 | 3.6 | 1.8 | 0.6 | 0.2 | 0.6 | 0.5 | 2.8 | 0.3 | 0.1 | |
| -0.5 | -1.4 | -17 | -3.5 | -1.7 | -0.5 | -0.2 | -0.6 | -0.5 | -2.8 | -0.3 | -0.1 | |
| 0.0 | 0.0 | 0.0 | 0.0 | – | – | – | – | – | – | – | – | |
| 118 | 137 | 139 | 168 | 44 | 0.2 | 0.2 | 94 | – | – | -0.4 | -0.1 | |
| -0.2 | -0.2 | -0.2 | -2.8 | -4.4 | – | – | – | – | – | – | – | |
| 118 | 141 | 154 | 165 | 40 | 0.2 | 0.2 | 190 | 241 | 45 | 1.6 | -0.1 | |
| 117 | 77 | 20 | 31 | 10 | -53 | -80 | 282 | 132 | -92 | -149 | -164 | |
| -1.2 | -64 | -134 | -135 | -30 | -54 | -81 | 92 | -109 | -137 | -150 | -164 |
Data as of: September 18, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.