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Buy Day today: Neutral (52) Mixed market breadth · major macro event coming up
PRTA

Prothena Corporation plc

Healthcare · Biotechnology

8.40$ -4.6% vs. previous close Closing price · As of: Sep 30, 2026

Statements

Income Statement

All figures as the change versus the prior period, in percent. Periods without a positive comparison base stay empty.

Tick rows to compare them in a chart (up to 4)

Income Statement PRTA
Line item 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
– -59.2% +424.3% -74.6% +7,422.8% -96.8% -34.3% +2,508.4% -96.5% -14.8% +4.8% +23,414.3% -73.1% +69.5% +47.9% -92.8%
– +122.7% +48.3% -7.2% +40.3% +3.0% +104.5% +12.6% -24.8% -49.8% +47.3% +9.9% -91.8% +3,172.1% -98.4% +3.3%
– -59.2% +424.3% -74.6% +7,422.8% -96.8% -34.3% +2,508.4% -464.2% – – +23,414.3% -73.1% +69.5% +47.9% -95.6%
– +147.0% +41.2% -23.7% +47.6% +52.0% +104.5% +12.6% -24.8% -49.8% +47.3% +9.9% +64.7% +62.7% +0.9% -39.4%
– +54.2% +78.0% +51.6% +26.6% +21.3% +77.7% +17.5% -11.9% -15.9% +8.3% +19.7% +7.7% +23.9% +8.7% -11.6%
– +121.9% +48.1% -6.7% +39.9% +41.8% +96.9% +13.8% -21.4% -75.2% +218.4% +13.2% +44.2% +52.3% +2.6% -34.2%
– – – – – – – – – – – – -282.8% – – –
– – – – -100.0% – – +327.3% +0.2% +121.9% +1.0% -18.5% -0.8% – – –
– – – – – – – – – – – – -274.6% – – –
– +33.1% -98.6% +6,816.7% +95.4% -13.6% +63.2% -481.6% – – -174.7% – -275.0% – – –
– – – – – – – – – – – – -274.6% – – –
– – – – – – – – – – – – -266.1% – – –

Data as of: September 30, 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.

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