| Schedule of summary of stock option activity |
| | | | | | | | | | | | | Weighted-average | | | | | | | Remaining | | | Number of | | Weighted-average | | Contractual Term | Options | | Shares | | Exercise Price | | (in years) | Outstanding at January 1, 2020 | | 23,020,981 | | 0.06 | | 7.06 | Granted | | 1,719,754 | | 0.16 | | | Exercised | | (1,097,370) | | 0.02 | | | Forfeited or expired | | (167,381) | | 0.15 | | | Outstanding at December 31, 2020 | | 23,475,984 | | 0.06 | | 6.53 | | | | | | | | Outstanding at January 1, 2021 | | 23,475,984 | | 0.06 | | 6.53 | Granted | | 12,285,359 | | 5.10 | | | Exercised | | (1,160,930) | | 0.09 | | | Forfeited or expired | | (192,464) | | 0.84 | | | Outstanding at December 31, 2021 | | 34,407,949 | | 1.86 | | 6.98 | Exercisable at December 31, 2020 | | 18,023,695 | | 0.04 | | 5.96 | Exercisable at December 31, 2021 | | 19,603,474 | | 0.05 | | 5.21 |
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