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Amortizatization of IntangiblesCapital ExpendituresCash from Financing ActivitiesCash from Investing ActivitiesCash from OperationsCash from RestructuringChange in Accured ExpensesChange in CashDeferred TaxesDepreciation & Amortization (CF)Depreciation and DepletionFree Cash FlowGains from Investment SecuritiesNet Cash FlowNet IncomeOther Working Capital ChangesShare-based CompensationShares Issued
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Prothena Corp Public (PRTA) Net Income (2016 - 2025)

Prothena Corp Public has reported Net Income over the past 14 years, most recently at -$21.5 million for Q4 2025.

  • Quarterly results put Net Income at -$21.5 million for Q4 2025, up 62.85% from a year ago — trailing twelve months through Dec 2025 was -$244.0 million (down 99.39% YoY), and the annual figure for FY2025 was -$244.1 million, down 99.57%.
  • Net Income for Q4 2025 was -$21.5 million at Prothena Corp Public, up from -$36.5 million in the prior quarter.
  • Over the last five years, Net Income for PRTA hit a ceiling of $109.2 million in Q3 2021 and a floor of -$125.8 million in Q2 2025.
  • Median Net Income over the past 5 years was -$39.0 million (2021), compared with a mean of -$28.2 million.
  • Biggest five-year swings in Net Income: skyrocketed 457.28% in 2021 and later plummeted 1162.62% in 2023.
  • Prothena Corp Public's Net Income stood at -$33.1 million in 2021, then skyrocketed by 119.16% to $6.3 million in 2022, then plummeted by 1162.62% to -$67.5 million in 2023, then rose by 14.06% to -$58.0 million in 2024, then skyrocketed by 62.85% to -$21.5 million in 2025.
  • The last three reported values for Net Income were -$21.5 million (Q4 2025), -$36.5 million (Q3 2025), and -$125.8 million (Q2 2025) per Business Quant data.