Prothena Corp Public (PRTA) Profit After Tax (2012 - 2026)

Prothena Corp Public's Profit After Tax history runs 15 years deep, the most recent figure standing at $32.7 million for Q1 2026.

• In Q1 2026, Profit After Tax rose 154.36% year-over-year to $32.7 million; the TTM figure through Mar 2026 stood at -$151.2 million (down 37.1% YoY), while the FY2025 annual figure was -$244.1 million, down 99.57% from the prior year.
• Profit After Tax for Q1 2026 stood at $32.7 million, up from -$21.6 million in the prior quarter.
• The five-year high for Profit After Tax was $66.9 million in Q2 2024, with the low at -$125.8 million in Q2 2025.
• The 5-year median for Profit After Tax is -$45.8 million (2022), against an average of -$35.2 million.
• The sharpest annual moves came in 2023 and 2024: Profit After Tax sank 1162.78% in 2023, then surged 222.51% in 2024.
• Prothena Corp Public's Profit After Tax stood at $6.3 million in 2022, then tumbled by 1162.78% to -$67.5 million in 2023, then climbed by 14.11% to -$58.0 million in 2024, then surged by 62.75% to -$21.6 million in 2025, then surged by 251.56% to $32.7 million in 2026.
• Business Quant data shows PRTA's Profit After Tax at $32.7 million in Q1 2026, -$21.6 million in Q4 2025, and -$36.5 million in Q3 2025.