Prothena Corp Public (PRTA) Shares Outstanding (Weighted Average) (2012 - 2026)

Prothena Corp Public's Shares Outstanding (Weighted Average) history runs 15 years deep, the most recent figure standing at $53.7 million for Q1 2026.

• In Q1 2026, Shares Outstanding (Weighted Average) changed 0.22% year-over-year to $53.7 million; the TTM figure through Mar 2026 stood at $53.7 million (changed 0.22% YoY), while the FY2025 annual figure was $53.8 million, changed 0.11% from the prior year.
• Shares Outstanding (Weighted Average) was $53.7 million for Q1 2026 at Prothena Corp Public, roughly flat from $53.8 million in the prior quarter.
• In the past five years, Shares Outstanding (Weighted Average) ranged from a high of $53.8 million in Q3 2025 to a low of $46.7 million in Q1 2022.
• Historically, Shares Outstanding (Weighted Average) has averaged $52.0 million across 5 years, with a median of $53.7 million in 2026.
• The sharpest annual moves came in 2022 and 2026: Shares Outstanding (Weighted Average) increased 16.03% in 2022, then dropped 0.22% in 2026.
• A 5-year view of Shares Outstanding (Weighted Average) shows it stood at $47.4 million in 2022, then rose by 12.34% to $53.2 million in 2023, then gained by 1.04% to $53.8 million in 2024, then grew by 0.11% to $53.8 million in 2025, then declined by 0.22% to $53.7 million in 2026.
• The last three Shares Outstanding (Weighted Average) figures came in at $53.7 million (Q1 2026), $53.8 million (Q4 2025), and $53.8 million (Q3 2025), per Business Quant data.