Prothena Corp Public (PRTA) Retained Earnings (2012 - 2026)

Prothena Corp Public's Retained Earnings history runs 15 years deep, the most recent figure standing at -$1.3 billion for Q1 2026.

• In Q1 2026, Retained Earnings fell 8.33% year-over-year to -$1.3 billion; the TTM figure through Mar 2026 stood at -$1.3 billion (down 8.33% YoY), while the FY2025 annual figure was -$1.3 billion, down 22.14% from the prior year.
• Retained Earnings was -$1.3 billion for Q1 2026 at Prothena Corp Public, up from -$1.3 billion in the prior quarter.
• In the past five years, Retained Earnings ranged from a high of -$752.3 million in Q1 2022 to a low of -$1.3 billion in Q4 2025.
• Historically, Retained Earnings has averaged -$1.0 billion across 5 years, with a median of -$985.4 million in 2024.
• The sharpest annual moves came in 2022 and 2025: Retained Earnings grew 8.23% in 2022, then sank 30.74% in 2025.
• A 5-year view of Retained Earnings shows it stood at -$833.0 million in 2022, then fell by 17.65% to -$980.0 million in 2023, then decreased by 12.48% to -$1.1 billion in 2024, then retreated by 22.14% to -$1.3 billion in 2025, then grew by 3.45% to -$1.3 billion in 2026.
• The last three Retained Earnings figures came in at -$1.3 billion (Q1 2026), -$1.3 billion (Q4 2025), and -$1.3 billion (Q3 2025), per Business Quant data.