Prothena Corp Public (PRTA) Common Equity (2012 - 2026)

Prothena Corp Public's Common Equity history runs 15 years deep, the most recent figure standing at $312.6 million for Q1 2026.

• In Q1 2026, Common Equity fell 28.57% year-over-year to $312.6 million; the TTM figure through Mar 2026 stood at $312.6 million (down 28.57% YoY), while the FY2025 annual figure was $280.5 million, down 42.4% from the prior year.
• Common Equity was $312.6 million for Q1 2026 at Prothena Corp Public, up from $280.5 million in the prior quarter.
• In the past five years, Common Equity ranged from a high of $622.0 million in Q4 2022 to a low of $280.5 million in Q4 2025.
• Historically, Common Equity has averaged $470.4 million across 5 years, with a median of $486.9 million in 2024.
• The sharpest annual moves came in 2022 and 2025: Common Equity soared 87.09% in 2022, then slumped 44.8% in 2025.
• A 5-year view of Common Equity shows it stood at $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 slumped by 42.4% to $280.5 million in 2025, then grew by 11.46% to $312.6 million in 2026.
• The last three Common Equity figures came in at $312.6 million (Q1 2026), $280.5 million (Q4 2025), and $295.0 million (Q3 2025), per Business Quant data.