PRTANasdaq United States
Market cap
$458.614 M
$8.76 +2.10%
Close of 7 Aug 2026
Revenue
$9.68M
#3177 by revenue
Earnings
-$244.1M
Loss-making
Shares outstanding
51,336,974
Latest filing cover page
P/E ratio
—
Cap ÷ net income
Where these numbers come from
Share counts and financials for Prothena Corp Public are taken from its own SEC filings via EDGAR — public record, not an estimate. Market cap is shares outstanding multiplied by the latest close. Last updated 9 Aug 2026. Read the methodology.