Stock-Based Compensation (Tables)
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12 Months Ended |
Dec. 31, 2025 |
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| Stock-Based Compensation |
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| Schedule of stock options activity |
| | | | | | | | | | Number of Options | | Weighted-Average Exercise Price | Balance at December 31, 2024 | | | 89,051,943 | | $ | 0.3232 | Stock options granted | | | 18,250,000 | | | 0.0789 | Stock options forfeited | | | 7,280,000 | | | 0.1588 | Vested stock options expired | | | 5,683,474 | | | 0.2950 | Balance at December 31, 2025 | | | 94,338,469 | | $ | 0.2904 | Vested at December 31, 2025 | | | 65,505,252 | | $ | 0.3552 |
| | | | | | | | | | Number of Options | | Weighted-Average Exercise Price | Balance at December 31, 2023 | | | 93,349,943 | | $ | 0.3338 | Stock options granted | | | 9,695,000 | | | 0.1364 | Stock options forfeited | | | 11,740,000 | | | 0.2326 | Vested stock options expired | | | 2,253,000 | | | 0.4286 | Balance at December 31, 2024 | | | 89,051,943 | | $ | 0.3232 | Vested at December 31, 2024 | | | 55,925,830 | | $ | 0.3563 |
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| Summary of issued and outstanding stock options |
| | | | | | | | | | | Grant Year | | Weighted-Average
Exercise Price | | Number of Options
Issued
and Outstanding | | Number of
Vested Options
Outstanding | | Number of
Unvested Options
Outstanding | | Weighted-Average
Remaining Life
Outstanding
(Years) | 2020 | | 0.21 | | 14,162,500 | | 14,162,500 | | — | | 5.00 | 2021 | | 0.83 | | 18,000,000 | | 18,000,000 | | — | | 5.61 | 2022 | | 0.27 | | 35,692,219 | | 27,419,162 | | 8,273,057 | | 6.48 | 2023 | | 0.21 | | 7,027,500 | | 4,252,500 | | 2,775,000 | | 7.65 | 2024 | | 0.15 | | 6,306,250 | | 1,671,090 | | 4,635,160 | | 8.79 | 2025 | | 0.07 | | 13,150,000 | | — | | 13,150,000 | | 9.47 | Balance at December 31, 2025 | | | | 94,338,469 | | 65,505,252 | | 28,833,217 | | |
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| Schedule of the continuity of SARs |
| | | | | | | | | | Number of SARs | | Weighted-Average Exercise Price | Balance at December 31, 2024 | | | 13,521,379 | | $ | 0.13 | SARs granted (non-employee directors) | | | 13,369,453 | | | 0.10 | Balance at December 31, 2025 | | | 26,890,832 | | $ | 0.12 | Vested at December 31, 2025 | | | 13,521,379 | | | 0.13 | | | | | | | | | | | Number of SARs | | Weighted-Average Exercise Price | Balance at December 31, 2023 | | | — | | $ | — | SARs granted (non-employee directors) | | | 13,521,379 | | | 0.13 | Balance at December 31, 2024 | | | 13,521,379 | | $ | 0.13 | Vested at December 31, 2024 | | | — | | | — | | | | | | | |
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| Employee Stock Option |
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| Stock-Based Compensation |
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| Summary of fair value assumptions |
The fair value of stock options granted during the year ended December 31, 2025, was estimated using the Black-Scholes option pricing model with the following assumptions: | | | | | | | | | | | | | | | Grant Year | | Weighted-Average
Volatility | | | Weighted-Average
Risk-Free Interest Rate | | | Weighted-Average
Expected Life
(In Years) | | | Weighted-Average
Common Share Price | | | Weighted-Average
Exercise Price | 2020 | | 96 | % | | 0.47 | % | | 9.53 | | $ | 0.21 | | $ | 0.22 | 2021 | | 117 | | | 1.09 | | | 6.19 | | | 0.65 | | | 0.65 | 2022 | | 112 | | | 3.09 | | | 5.90 | | | 0.26 | | | 0.27 | 2023 | | 108 | | | 3.96 | | | 6.25 | | | 0.21 | | | 0.22 | 2024 | | 87 | | | 4.30 | | | 6.25 | | | 0.13 | | | 0.14 | 2025 | | 87 | | | 4.14 | | | 6.25 | | | 0.07 | | | 0.08 |
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| Stock Appreciation Rights (SARs) |
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| Stock-Based Compensation |
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| Summary of fair value assumptions |
| | | | | | | | | | | December 31, | | | December 31, | | | | | 2025 | | | 2024 | | Closing share price | | $ | 0.10 | | | 0.12 | | Exercise price | | | 0.12 | | | 0.13 | | Expected term (years) | | | 4.9 | | | 5.4 | | Expected volatility | | | 97.2 | % | | 65.4 | % | Risk-free interest rate | | | 3.7 | % | | 4.4 | % |
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