Prothena Corp Public Ltd Co financial data

Symbol
PRTA on Nasdaq
Location
77 Sir John Rogerson's Quay, Block C, Grand Canal Docklands, Dublin 2, Ireland
Fiscal year end
December 31
Latest financial report
10-Q - Q3 2025 - Nov 6, 2025

Key Ratios

Label TTM Value / Value Unit Change %
Current Ratio 762 % -36.7%
Debt-to-equity 16.2 % -7.11%
Return On Equity -72.7 % -200%
Return On Assets -62.5 % -204%

Shares

Label TTM Value / Value Unit Change %
Entity Common Stock, Shares Outstanding 53.8M shares +0.04%
Common Stock, Shares, Outstanding 53.8M shares +0.04%
Entity Public Float 870M USD -70%
Common Stock, Value, Issued 538K USD 0%
Weighted Average Number of Shares Outstanding, Basic 53.8M shares +0.07%
Weighted Average Number of Shares Outstanding, Diluted 53.8M shares +0.07%

Income Statement

Label TTM Value / Value Unit Change %
Revenue from Contract with Customer, Excluding Assessed Tax 11.8M USD -91.2%
Research and Development Expense 170M USD -27.2%
General and Administrative Expense 63.6M USD -5.49%
Operating Income (Loss) -255M USD -51.8%
Nonoperating Income (Expense) 16.6M USD -41.1%
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest -239M USD -70.5%
Income Tax Expense (Benefit) 41.7M USD +55.6%
Net Income (Loss) Attributable to Parent -280M USD -113%
Earnings Per Share, Basic -5 USD/shares -113%
Earnings Per Share, Diluted -5 USD/shares -113%

Balance Sheet

Label TTM Value / Value Unit Change %
Cash and Cash Equivalents, at Carrying Value 331M USD -36.3%
Accounts Receivable, after Allowance for Credit Loss, Current 0 USD -100%
Assets, Current 340M USD -36.5%
Deferred Income Tax Assets, Net 0 USD -100%
Property, Plant and Equipment, Net 2.46M USD -24.3%
Operating Lease, Right-of-Use Asset 8.85M USD -22.4%
Other Assets, Noncurrent 482K USD -87.2%
Assets 353M USD -40.8%
Accounts Payable, Current 10.5M USD +1.68%
Employee-related Liabilities, Current 7.66M USD -35.5%
Liabilities, Current 51.4M USD +10.8%
Operating Lease, Liability, Noncurrent 6.2M USD -30.2%
Other Liabilities, Noncurrent 0 USD -100%
Liabilities 57.6M USD -5.34%
Retained Earnings (Accumulated Deficit) -1.32B USD -26.9%
Stockholders' Equity Attributable to Parent 295M USD -44.8%
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 295M USD -44.8%
Liabilities and Equity 353M USD -40.8%

Popular Metrics

Label TTM Value / Value Unit Change %
Net Cash Provided by (Used in) Operating Activities -53.4M USD +27%
Net Cash Provided by (Used in) Financing Activities 836K USD -96.4%
Net Cash Provided by (Used in) Investing Activities -42K USD +59.2%
Common Stock, Shares Authorized 100M shares 0%
Common Stock, Shares, Issued 53.8M shares +0.04%
Common Stock, Par or Stated Value Per Share 0.01 USD/shares 0%
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents 332M USD -36.2%
Deferred Tax Assets, Valuation Allowance 199M USD +9.44%
Deferred Tax Assets, Gross 245M USD +11.9%
Operating Lease, Liability 9.08M USD -21%
Depreciation 900K USD 0%
Lessee, Operating Lease, Liability, to be Paid 9.93M USD -23.3%
Property, Plant and Equipment, Gross 9.38M USD -17.3%
Operating Lease, Liability, Current 2.88M USD +10.2%
Lessee, Operating Lease, Liability, to be Paid, Year Two 3.27M USD +3.52%
Lessee, Operating Lease, Liability, to be Paid, Year One 3.3M USD +3.55%
Operating Lease, Weighted Average Discount Rate, Percent 0.04 pure 0%
Lessee, Operating Lease, Liability, Undiscounted Excess Amount 850K USD -41.5%
Lessee, Operating Lease, Liability, to be Paid, Year Three 2.52M USD -22.8%
Deferred Tax Assets, Operating Loss Carryforwards 171M USD +9.71%
Unrecognized Tax Benefits 15.4M USD +15.5%
Lessee, Operating Lease, Liability, to be Paid, Year Four 2.52M USD -22.8%
Operating Lease, Payments 0 USD -100%
Additional Paid in Capital 1.62B USD +2.6%
Depreciation, Depletion and Amortization 223K USD +3.72%
Deferred Tax Assets, Net of Valuation Allowance 46M USD +24.1%