Balance Sheet
Accounts PayablesAccumulated ExpensesAssetsCash & Current InvestmentsCash & EquivalentsCommon EquityCurrent AssetsCurrent Deferred RevenueCurrent LeasesLiabilities and Shareholders EquityLong-Term Deferred TaxNon-Current AssetsNon-Current Deffered RevenueOperating LeasesOther Accumulated ExpensesOther Non-Current AssetsPayablesPrepaid AssetsProperty, Plant & Equipment (Net)Retained EarningsShareholder's EquityTotal Current LiabilitiesTotal LiabilitiesTotal Non-Current LiabilitiesTreasury Shares
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Ratios

Prothena Corp Public (PRTA) Common Equity (2016 - 2025)

Prothena Corp Public (PRTA) has 14 years of Common Equity data on record, last reported at $280.5 million in Q4 2025.

  • For Q4 2025, Common Equity fell 42.4% year-over-year to $280.5 million; the TTM value through Dec 2025 reached $280.5 million, down 42.4%, while the annual FY2025 figure was $280.5 million, 42.4% down from the prior year.
  • Common Equity reached $280.5 million in Q4 2025 per PRTA's latest filing, down from $295.0 million in the prior quarter.
  • Across five years, Common Equity topped out at $622.0 million in Q4 2022 and bottomed at $234.6 million in Q1 2021.
  • Average Common Equity over 5 years is $418.8 million, with a median of $466.0 million recorded in 2021.
  • Peak YoY movement for Common Equity: skyrocketed 153.28% in 2021, then tumbled 44.8% in 2025.
  • A 5-year view of Common Equity shows it stood at $466.0 million in 2021, then skyrocketed by 33.47% to $622.0 million in 2022, then decreased by 9.75% to $561.4 million in 2023, then decreased by 13.26% to $486.9 million in 2024, then crashed by 42.4% to $280.5 million in 2025.
  • Per Business Quant database, its latest 3 readings for Common Equity were $280.5 million in Q4 2025, $295.0 million in Q3 2025, and $486.9 million in Q4 2024.