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PROTHENA CORP PUBLIC LTD CO PRTA

Nasdaq · stock · Pharmaceutical Preparations · website · IPO 2012-12-21

PROTHENA CORP PUBLIC LTD CO statistics & valuation

Market cap$524.6M
P / S54.2×
P / B1.9×
Net margin-2520.6%
Return on equity-87.0%
Return on capital-75.1%

Market cap as of 2026-06-29. Multiples are price-derived and refreshed daily; everything else from the latest financial reports.

Profitability & efficiency

Net margin (%)
-15176.10% -556.80% -16297.90% -9542.60% -13029.80% 33.40% -217.00% -160.90% -90.50% -2520.60% 2016201720182019202020212022202320242025
Gross margin (%)
2016201720182019202020212022202320242025
Operating margin (%)
-15121.80% -564.20% -16634.00% -10527.90% -13216.20% 35.90% -244.10% -209.10% -114.40% -2216.40% 2016201720182019202020212022202320242025
Return on equity (%)
-43.80% -37.60% -48.20% -28.50% -60.40% 14.40% -18.80% -26.20% -25.10% -87.00% 2016201720182019202020212022202320242025
Shares outstanding
34.8M 38.5M 39.9M 39.9M 39.9M 48.5M 52.1M 53.7M 53.8M 53.8M 2016201720182019202020212022202320242025
Net debt ($)
2016201720182019202020212022202320242025
Share buybacks ($)
2016201720182019202020212022202320242025
Return on assets (%)
-34.80% -30.90% -31.20% -18.50% -33.40% 11.00% -15.40% -21.10% -22.40% -74.70% 2016201720182019202020212022202320242025
Free cash flow margin (%)
2016201720182019202020212022202320242025
Debt / equity (×)
2016201720182019202020212022202320242025
EPS ($)
-$1.95 -$2.78 $1.38 -$2.47 -$2.76 -$2.27 -$4.53 2016201720182019202020212022202320242025

Margins and returns computed from annual filings. Falling shares outstanding = buybacks; rising = dilution. Net debt = debt − cash (negative = net cash).

Key ratios (by fiscal year)

RatioFY2025FY2024FY2023FY2022FY2021FY2020FY2019FY2018FY2017FY2016
Operating margin-2216.4%-114.4%-209.1%-244.1%35.9%-13216.2%-10527.9%-16634.0%-564.2%-15121.8%
Net margin-2520.6%-90.5%-160.9%-217.0%33.4%-13029.8%-9542.6%-16297.9%-556.8%-15176.1%
Return on assets-74.7%-22.4%-21.1%-15.4%11.0%-33.4%-18.5%-31.2%-30.9%-34.8%
Return on equity-87.0%-25.1%-26.2%-18.8%14.4%-60.4%-28.5%-48.2%-37.6%-43.8%
Current ratio7.7210.0111.2414.3417.4811.5821.3628.9011.419.53

Computed from company filings · US · as of 2025-12-31. Facts plus Stocktoria's own computed scores — not investment advice.