| For the year ended | December 31, 2023 | December 31, 2022 | |||||
| Risk-free interest rate | 3.71% | 3.13% | |||||
| Expected dividend yield | 0% | 0% | |||||
| Annualized stock price volatility | 83% | 81% | |||||
| Expected life of options | 5 years | 5 years | |||||
| Expected forfeiture rate | 0% | 0% | |||||
| Years ended December 31 | |||||||||
| 2023 | 2022 | 2021 | |||||||
| Risk-free interest rate | 3.06% | 2.20% | 0.91% | ||||||
| Expected dividend yield | Nil | Nil | Nil | ||||||
| Share price volatility | 68% | 67% | 67% | ||||||
| Expected forfeiture rate | 4.7% | 2.5% | 0% | ||||||
| Expected life in years | 5.0 | 5.0 | 4.90 | ||||||
