PROTHENA CORP PUBLIC LTD CO financial data

Symbol
PRTA on Nasdaq
Location
Dublin 2, Ireland
Fiscal year end
31 December
Latest financial report
27 Feb 2026

Key Ratios

Label TTM Value / Value Unit Change %
Current Ratio 708% % -40%
Debt-to-equity 18% % 22%
Return On Equity -73% % -214%
Return On Assets -62% % -206%

Shares

Label TTM Value / Value Unit Change %
Entity Common Stock, Shares Outstanding 53,832,982 shares 0.01%
Common Stock, Shares, Outstanding 53,832,982 shares 0.01%
Entity Public Float $326,600,000 USD -62%
Common Stock, Value, Issued $538,000 USD 0%
Weighted Average Number of Shares Outstanding, Basic 53,829,000 shares 0.11%
Weighted Average Number of Shares Outstanding, Diluted 53,829,000 shares 0.11%

Income Statement

Label TTM Value / Value Unit Change %
Revenue from Contract with Customer, Excluding Assessed Tax $9,684,000 USD -93%
Research and Development Expense $134,852,000 USD -39%
General and Administrative Expense $59,392,000 USD -12%
Operating Income (Loss) $214,640,000 USD -39%
Nonoperating Income (Expense) $13,811,000 USD -46%
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest $200,829,000 USD -56%
Income Tax Expense (Benefit) $43,263,000 USD
Net Income (Loss) Attributable to Parent $244,092,000 USD -100%
Earnings Per Share, Basic -4.53 USD/shares -100%
Earnings Per Share, Diluted -4.53 USD/shares -100%

Balance Sheet

Label TTM Value / Value Unit Change %
Cash and Cash Equivalents, at Carrying Value $307,531,000 USD -35%
Accounts Receivable, after Allowance for Credit Loss, Current $0 USD -100%
Assets, Current $315,193,000 USD -35%
Deferred Income Tax Assets, Net $0 USD -100%
Property, Plant and Equipment, Net $2,144,000 USD -30%
Operating Lease, Right-of-Use Asset $8,125,000 USD -24%
Other Assets, Noncurrent $482,000 USD -87%
Assets $326,804,000 USD -40%
Accounts Payable, Current $5,875,000 USD -24%
Employee-related Liabilities, Current $11,350,000 USD -22%
Liabilities, Current $40,843,000 USD -16%
Operating Lease, Liability, Noncurrent $5,487,000 USD -33%
Liabilities $46,330,000 USD -23%
Retained Earnings (Accumulated Deficit) $1,346,433,000 USD -22%
Stockholders' Equity Attributable to Parent $280,474,000 USD -42%
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $280,474,000 USD -42%
Liabilities and Equity $326,804,000 USD -40%

Popular Metrics

Label TTM Value / Value Unit Change %
Net Cash Provided by (Used in) Operating Activities $53,363,000 USD 27%
Net Cash Provided by (Used in) Financing Activities $48,000 USD -106%
Net Cash Provided by (Used in) Investing Activities $42,000 USD 59%
Common Stock, Shares Authorized 100,000,000 shares 0%
Common Stock, Shares, Issued 53,832,982 shares 0.01%
Common Stock, Par or Stated Value Per Share 0.01 USD/shares 0%
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents $308,391,000 USD -35%
Deferred Tax Assets, Valuation Allowance $266,576,000 USD 34%
Deferred Tax Assets, Gross $268,757,000 USD 9.8%
Operating Lease, Liability $8,373,000 USD -23%
Depreciation $900,000 USD 0%
Lessee, Operating Lease, Liability, to be Paid $9,093,000 USD -25%
Property, Plant and Equipment, Gross $9,196,000 USD -19%
Operating Lease, Liability, Current $2,886,000 USD 11%
Lessee, Operating Lease, Liability, to be Paid, Year Two $3,269,000 USD 3.5%
Lessee, Operating Lease, Liability, to be Paid, Year One $3,301,000 USD 3.8%
Lessee, Operating Lease, Liability, Undiscounted Excess Amount $720,000 USD -44%
Lessee, Operating Lease, Liability, to be Paid, Year Three $2,523,000 USD -23%
Deferred Tax Assets, Operating Loss Carryforwards $203,434,000 USD 19%
Unrecognized Tax Benefits $15,909,000 USD 3.1%
Lessee, Operating Lease, Liability, to be Paid, Year Four $2,523,000 USD -23%
Operating Lease, Payments $0 USD -100%
Additional Paid in Capital $1,626,369,000 USD 2.4%
Depreciation, Depletion and Amortization $223,000 USD 3.7%
Deferred Tax Assets, Net of Valuation Allowance $2,181,000 USD -95%