Prothena Corp Public (PRTA) Enterprise Value (2012 - 2026)

Prothena Corp Public's Enterprise Value history runs 15 years deep, the most recent figure standing at -$329.5 million for Q1 2026.

• On a quarterly basis, Enterprise Value rose 21.17% year-over-year to -$329.5 million in Q1 2026; TTM through Mar 2026 was -$329.5 million, a 21.17% increase from a year earlier, with the FY2025 full-year figure at -$307.5 million, up 34.76% from the prior year.
• Enterprise Value fell to -$329.5 million in Q1 2026 per PRTA's latest filing, from -$307.5 million in the prior quarter.
• Across five years, Enterprise Value topped out at -$307.5 million in Q4 2025 and bottomed at -$710.4 million in Q4 2022.
• The 5-year median for Enterprise Value is -$519.3 million (2024), against an average of -$515.1 million.
• Across the five-year window, Enterprise Value sank 57.69% in 2022 and surged 36.29% in 2025, its largest moves.
• Year by year, Enterprise Value stood at -$710.4 million in 2022, then climbed by 12.7% to -$620.2 million in 2023, then gained by 23.99% to -$471.4 million in 2024, then soared by 34.76% to -$307.5 million in 2025, then retreated by 7.13% to -$329.5 million in 2026.
• Per Business Quant, the three latest PRTA Enterprise Value figures stand at -$329.5 million (Q1 2026), -$307.5 million (Q4 2025), and -$330.8 million (Q3 2025).