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.

• On a quarterly basis, Profit After Tax rose 154.36% year-over-year to $32.7 million in Q1 2026; TTM through Mar 2026 was -$151.2 million, a 37.1% decrease from a year earlier, with the FY2025 full-year figure at -$244.1 million, down 99.57% from the prior year.
• Profit After Tax improved to $32.7 million in Q1 2026 per PRTA's latest filing, from -$21.6 million in the prior quarter.
• Across five years, Profit After Tax topped out at $66.9 million in Q2 2024 and bottomed 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.
• Across the five-year window, Profit After Tax slumped 1162.78% in 2023 and surged 222.51% in 2024, its largest moves.
• Year by year, Profit After Tax stood at $6.3 million in 2022, then slumped by 1162.78% to -$67.5 million in 2023, then grew by 14.11% to -$58.0 million in 2024, then soared by 62.75% to -$21.6 million in 2025, then soared by 251.56% to $32.7 million in 2026.
• Per Business Quant, the three latest PRTA Profit After Tax figures stand at $32.7 million (Q1 2026), -$21.6 million (Q4 2025), and -$36.5 million (Q3 2025).