Growth Metrics

Prothena Corp Public (PRTA) EBIAT (2016 - 2025)

Prothena Corp Public (PRTA) has 14 years of EBIAT data on record, last reported at -$21.6 million in Q4 2025.

  • For Q4 2025, EBIAT rose 62.75% year-over-year to -$21.6 million; the TTM value through Dec 2025 reached -$244.1 million, down 99.57%, while the annual FY2025 figure was -$244.1 million, 99.57% down from the prior year.
  • EBIAT reached -$21.6 million in Q4 2025 per PRTA's latest filing, up from -$36.5 million in the prior quarter.
  • Across five years, EBIAT topped out at $109.2 million in Q3 2021 and bottomed at -$125.8 million in Q2 2025.
  • Average EBIAT over 5 years is -$28.2 million, with a median of -$39.0 million recorded in 2021.
  • Peak YoY movement for EBIAT: surged 457.28% in 2021, then plummeted 1162.78% in 2023.
  • A 5-year view of EBIAT shows it stood at -$33.2 million in 2021, then soared by 119.14% to $6.3 million in 2022, then tumbled 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.
  • Per Business Quant database, its latest 3 readings for EBIAT were -$21.6 million in Q4 2025, -$36.5 million in Q3 2025, and -$125.8 million in Q2 2025.