PROTHENA CORP PUBLIC LTD CO Earnings Per Share Disclosure
| Year Ended December 31, | ||||||||||||||||||||
| 2025 | 2024 | 2023 | ||||||||||||||||||
| Numerator: | ||||||||||||||||||||
Net loss | $ | (244,092) | $ | (122,310) | $ | (147,028) | ||||||||||||||
| Denominator: | ||||||||||||||||||||
Weighted-average ordinary shares outstanding used in per share calculations | 53,829 | 53,772 | 53,216 | |||||||||||||||||
Net loss per share: | ||||||||||||||||||||
Basic and diluted net loss per ordinary share | $ | (4.53) | $ | (2.27) | $ | (2.76) | ||||||||||||||
| Year Ended December 31, | |||||||||||||||||
| 2025 | 2024 | 2023 | |||||||||||||||
| Stock options to purchase ordinary shares | 10,289 | 11,107 | 9,866 | ||||||||||||||
| Restricted Stock Units (RSU) | 1,091 | 6 | 25 | ||||||||||||||
| Total | 11,380 | 11,113 | 9,891 | ||||||||||||||
Historical Timeline
| Fiscal Year | Filed | |
|---|---|---|
| 2025 | Feb 27, 2026 | Showing above |
| 2018 | Mar 15, 2019 | |
| 2017 | Feb 26, 2018 | |
| 2016 | Feb 27, 2017 | |
About Earnings Per Share Disclosures
The earnings per share disclosure breaks down the calculation from net income to both basic and diluted EPS, revealing the full impact of a company's capital structure on per-share economics. The reconciliation between basic and diluted share counts exposes how many stock options, RSUs, convertible securities, and warrants are potentially dilutive to existing shareholders.
Key signals: a widening gap between basic and diluted shares indicates growing dilution from equity compensation or convertible instruments. Anti-dilutive securities excluded from the diluted calculation deserve attention — they represent latent dilution that will materialize if the stock price rises. Watch for the effect of share buybacks on per-share metrics: EPS growth driven primarily by repurchases rather than income growth signals weakening fundamentals. Compare year-over-year changes in the diluted share count against equity compensation expense to assess whether management is effectively managing dilution.