Quick Answer
PROTHENA CORP PUBLIC LTD CO reported Stockholders Equity of $280.47 million for fiscal year 2025.
PROTHENA CORP PUBLIC LTD CO Stockholders Equity — Annual History
| Fiscal Year | Stockholders Equity | YoY Change |
|---|---|---|
| 2025 | $280.47M | -42.4% |
| 2024 | $486.93M | -13.3% |
| 2023 | $561.37M | -9.8% |
| 2022 | $622.04M | +33.5% |
| 2021 | $466.04M | +153.3% |
| 2020 | $184.01M | -32.6% |
| 2019 | $272.92M | -15.5% |
| 2018 | $323.00M | -20.7% |
| 2017 | $407.19M | +11.4% |
| 2016 | $365.40M | +1.3% |
| 2015 | $360.67M | +24.4% |
| 2014 | $289.89M | +67.3% |
| 2013 | $173.27M | +37.0% |
| 2012 | $126.48M | +2065.3% |
| 2011 | -$6.44M | -21353.3% |
| 2010 | -$30.0K | — |
Quarterly Stockholders Equity
| Quarter Ending | Stockholders Equity | YoY | QoQ |
|---|---|---|---|
| September 30, 2025 | $294.99M | -44.8% | -9.0% |
| June 30, 2025 | $324.33M | -44.3% | -25.9% |
| March 31, 2025 | $437.68M | -12.9% | -10.1% |
| December 31, 2024 | $486.93M | -13.3% | -8.9% |
| September 30, 2024 | $534.36M | -13.4% | -8.2% |
| June 30, 2024 | $581.92M | +0.0% | +15.8% |
| March 31, 2024 | $502.40M | -17.3% | -10.5% |
| December 31, 2023 | $561.37M | -9.8% | -9.1% |
- PROTHENA CORP PUBLIC LTD CO showed a decrease of -42.4% in Stockholders Equity compared to the prior fiscal year.
- Over the 2010–2025 period, PROTHENA CORP PUBLIC LTD CO’s stockholders equity has grown by 935013.3% (from -$30.0 thousand to $280.47 million).
- The most recent figure is from PROTHENA CORP PUBLIC LTD CO’s fiscal year 2025 report (Form 10-K), filed with the SEC on February 27, 2026.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
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