Prothena Plc (PRTA) financials
Prothena Plc revenue and earnings by year
Prothena Plc's revenue was $9.68 million in the fiscal year to December 31, 2025, down 92.8% from the year before. Net income was -$244 million, -2520.6% of revenue. Since the fiscal year to December 31, 2016, revenue has grown 27.9% a year on average.
Fiscal years, each labelled by the calendar year it ended in.
Income statement, the last 10 fiscal years
| Fiscal year to | Dec 2025 | Dec 2024 | Dec 2023 | Dec 2022 | Dec 2021 | Dec 2020 | Dec 2019 | Dec 2018 | Dec 2017 | Dec 2016 |
|---|---|---|---|---|---|---|---|---|---|---|
| Revenue | 10 | 135 | 91 | 54 | 201 | 1 | 1 | 1 | 28 | 1 |
| Revenue growth | -92.8% | 47.9% | 69.5% | -73.1% | 23414.3% | 4.8% | -14.8% | -96.5% | 2508.4% | — |
| Operating income | -215 | -155 | -191 | -132 | 72 | -113 | -86 | -159 | -155 | -160 |
| Operating margin | -2216.4% | -114.4% | -209.1% | -244.1% | 35.9% | -13216.2% | -10527.9% | -16634.0% | -564.2% | -15121.8% |
| Net income | -244 | -122 | -147 | -117 | 67 | -111 | -78 | -156 | -153 | -160 |
| Net margin | -2520.6% | -90.5% | -160.9% | -217.0% | 33.4% | -13029.8% | -9542.6% | -16297.9% | -556.8% | -15176.1% |
| Diluted EPS | -$4.53 | -$2.27 | -$2.76 | -$2.47 | $1.38 | -$2.79 | -$1.95 | -$3.94 | -$4.06 | -$4.66 |
| Free cash flow | -164 | -150 | -137 | -109 | 92 | -81 | -54 | -30 | -135 | -133 |
Diluted EPS is stated in today's shares (adjusted for every split since). Quarterly statements and the income statement as a flow chart are in the app: open PRTA in Markets.
See also: PRTA returns
No forecast, no recommendation. This page describes Prothena Plc from published data; it is not advice to buy, sell or hold any security.
Figures as of the close on Oct 30, 2026 unless a row says otherwise. Prices are split adjusted; returns include dividends reinvested. Data may be delayed. See the disclaimer and how TrendArc works.