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.
Profit margin
0.00%
Operating margin
-129,576.00%
ROE
-63.60%
ROA
-26.40%
Debt/equity
—
Margin trends — annual
Gross margin Operating margin Profit margin
| Year | Revenue | Net income | Gross margin | Op. margin | Profit margin |
|---|---|---|---|---|---|
| 2010 | $1.24M | $-12.48M | 100.00% | -978.44% | -1,004.18% |
| 2011 | $507000.00 | $-29.67M | 100.00% | -5,768.05% | -5,852.07% |
| 2012 | $2.66M | $-41.41M | 100.00% | -1,557.94% | -1,557.98% |
| 2013 | $676000.00 | $-41.00M | 100.00% | -5,980.33% | -6,064.50% |
| 2014 | $50.85M | $-7.15M | 100.00% | -13.07% | -14.06% |
| 2015 | $1.61M | $-80.61M | 100.00% | -4,974.30% | -5,016.30% |
| 2016 | $1.05M | $-160.11M | 100.00% | -15,121.80% | -15,176.11% |
| 2017 | $27.52M | $-153.24M | 100.00% | -564.17% | -556.84% |
| 2018 | $955000.00 | $-155.65M | -10,495.08% | -16,634.03% | -16,297.91% |
| 2019 | $814000.00 | $-77.68M | -6,145.21% | -10,527.89% | -9,542.63% |
| 2020 | $853000.00 | $-111.14M | 100.00% | -13,216.18% | -13,029.78% |
| 2021 | $200.58M | $66.97M | 100.00% | 35.88% | 33.39% |
| 2022 | $53.91M | $-116.95M | 100.00% | -244.05% | -216.95% |
| 2023 | $91.37M | $-147.03M | 100.00% | -209.08% | -160.91% |
| 2024 | $135.16M | $-122.31M | 100.00% | -114.36% | -90.49% |
| 2025 | $9.68M | $-244.09M | 61.77% | -1,905.82% | -2,520.57% |