Prothena Corp Public (PRTA) Shares Outstanding (2012 - 2026)
Prothena Corp Public (PRTA) posted quarterly Shares Outstanding (Entity) of $53.1 million for Q1 2026, down 1.39% year-over-year from $53.8 million in Q1 2025, and down 1.4% quarter-over-quarter from $53.8 million in Q4 2025.
Prothena Corp Public (PRTA) Shares Outstanding (2012 - 2026) Analysis & Trends
Prothena Corp Public's Shares Outstanding (Entity) history runs 15 years deep, the most recent figure standing at $53.1 million for Q1 2026.
- In Q1 2026, Shares Outstanding (Entity) fell 1.39% year-over-year to $53.1 million; the TTM figure through Mar 2026 stood at $53.1 million (down 1.39% YoY), while the FY2025 annual figure was $53.8 million, changed 0.01% from the prior year.
- Shares Outstanding (Entity) for Q1 2026 stood at $53.1 million, down from $53.8 million in the prior quarter.
- The five-year high for Shares Outstanding (Entity) was $53.8 million in Q4 2025, with the low at $46.7 million in Q1 2022.
- The 5-year median for Shares Outstanding (Entity) is $53.7 million (2023), against an average of $52.4 million.
- The sharpest annual moves came in 2023 and 2026: Shares Outstanding (Entity) gained 14.28% in 2023, then slipped 1.39% in 2026.
- Prothena Corp Public's Shares Outstanding (Entity) stood at $52.1 million in 2022, then gained by 3.03% to $53.7 million in 2023, then rose by 0.27% to $53.8 million in 2024, then rose by 0.01% to $53.8 million in 2025, then declined by 1.4% to $53.1 million in 2026.
- Business Quant data shows PRTA's Shares Outstanding (Entity) at $53.1 million in Q1 2026, $53.8 million in Q4 2025, and $53.8 million in Q3 2025.
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Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Shares Outstanding (Qtr) |
|---|---|---|---|---|---|
| 1 | Vertex Pharmaceuticals | 128.13 Bn | 120.28 Bn | 2.84 Bn | 253.70 Mn |
| 2 | Regeneron Pharmaceuticals | 112.33 Bn | 104.33 Bn | 3.93 Bn | 102.80 Mn |
| 3 | Argenx Se | 53.24 Bn | 48.05 Bn | 1.41 Bn | 62.19 Mn |
| 4 | Revolution Medicines | 43.64 Bn | 43.64 Bn | - | 210.89 Mn |
| 5 | BeOne Medicines | 39.27 Bn | 34.17 Bn | 1.53 Bn | 1.45 Bn |
| 6 | MindWalk Holdings | 35.32 Bn | 35.31 Bn | 1.82 Bn | 25.05 Bn |
| 7 | Royalty Pharma | 33.72 Bn | 35.84 Bn | - | 445.06 Mn |
| 8 | Alnylam Pharmaceuticals | 30.58 Bn | 27.27 Bn | 992.69 Mn | 133.61 Mn |
| 9 | Insmed | 27.01 Bn | 25.85 Bn | 358.27 Mn | 217.35 Mn |
| 10 | Prothena Corp Public | 458.45 Mn | 170.25 Mn | - | 52.15 Mn |
Historic Data
Download Data| Date | Value |
|---|---|
| Jun 30, 2026 | 52.15 Mn |
| Mar 31, 2026 | 53.71 Mn |
| Dec 31, 2025 | 53.83 Mn |
| Sep 30, 2025 | 53.83 Mn |
| Jun 30, 2025 | 53.83 Mn |
| Mar 31, 2025 | 53.83 Mn |
| Dec 31, 2024 | 53.77 Mn |
| Sep 30, 2024 | 53.79 Mn |
| Jun 30, 2024 | 53.77 Mn |
| Mar 31, 2024 | 53.71 Mn |
| Dec 31, 2023 | 53.22 Mn |
| Sep 30, 2023 | 53.56 Mn |
| Jun 30, 2023 | 53.12 Mn |
| Mar 31, 2023 | 52.50 Mn |
| Dec 31, 2022 | 47.37 Mn |
| Sep 30, 2022 | 46.99 Mn |
| Jun 30, 2022 | 46.81 Mn |
| Mar 31, 2022 | 46.70 Mn |
| Dec 31, 2021 | 44.23 Mn |
| Sep 30, 2021 | 45.63 Mn |