Prothena Corp Public (PRTA) Operating Expenses (2012 - 2026)

Prothena Corp Public's Operating Expenses history runs 15 years deep, the most recent figure standing at $21.0 million for Q1 2026.

• On a quarterly basis, Operating Expenses fell 69.23% year-over-year to $21.0 million in Q1 2026; TTM through Mar 2026 was $177.0 million, a 36.01% decrease from a year earlier, with the FY2025 full-year figure at $224.3 million, down 22.57% from the prior year.
• Operating Expenses eased to $21.0 million in Q1 2026 per PRTA's latest filing, from $24.2 million in the prior quarter.
• Across five years, Operating Expenses topped out at $89.0 million in Q2 2025 and bottomed at $21.0 million in Q1 2026.
• The 5-year median for Operating Expenses is $67.0 million (2024), against an average of $59.0 million.
• Across the five-year window, Operating Expenses surged 73.14% in 2022 and sank 69.23% in 2026, its largest moves.
• Year by year, Operating Expenses stood at $50.0 million in 2022, then surged by 57.68% to $78.8 million in 2023, then dropped by 14.98% to $67.0 million in 2024, then plunged by 63.86% to $24.2 million in 2025, then dropped by 13.11% to $21.0 million in 2026.
• Per Business Quant, the three latest PRTA Operating Expenses figures stand at $21.0 million (Q1 2026), $24.2 million (Q4 2025), and $42.7 million (Q3 2025).