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Stock Options and Restricted Stock Units - Summary of Stock Option Activity (Details) - Employee stock option - USD ($) |  | 3 Months Ended
--- | --- | ---
Jan. 23, 2023 | Mar. 31, 2023 | Mar. 31, 2022
Stock Options and Restricted Stock Units |  |  |
Number of Options, Exercised (in shares) |  | (148,167) |
Weighted Average Exercise Price Exercised (in dollars per shares) |  | $ 2.31 |
2013 Stock Plan |  |  |
Stock Options and Restricted Stock Units |  |  |
Number of Options, Outstanding - Beginning balance (in shares) |  | 6,690,490 | 5,536,896
Number of options, Granted (in shares) |  | 25,000 | 1,479,558
Number of Options, Exercised (in shares) |  | (148,167) | (22,500)
Number of Options, Forfeited/Expired (in shares) |  | (64,666) | (35,400)
Number of Options, Outstanding - Ending balance (in shares) |  | 6,502,657 | 6,958,554
Number of Options Exercisable (in shares) |  | 4,041,942 | 3,418,917
Number of Options, Vested and Expected to Vest (in shares) |  | 6,502,657 | 6,958,554
Weighted Average Exercise Price Outstanding beginning balance (in dollars per shares) |  | $ 3.09 | $ 2.66
Weighted Average Exercise Price Granted (in dollars per shares) |  | 3.31 | 5.21
Weighted Average Exercise Price Exercised (in dollars per shares) |  | 2.31 | 1.17
Weighted Average Exercise Price Forfeited/Expired (in dollars per shares) |  | 6.96 | 5.10
Weighted Average Exercise Price Outstanding Ending balance (in dollars per shares) |  | 3.07 | 3.20
Weighted Average Exercise Price Exercisable (in dollars per shares) |  | 2.03 | 1.82
Weighted Average Exercise Price Vested and Expected to Vest (in dollars per shares) |  | $ 3.07 | $ 3.20
Weighted Average Remaining Contractual Term Outstanding (in years) |  | 6 years 11 months 8 days | 7 years 10 months 2 days
Weighted Average Remaining Contractual Term Exercisable (in years) |  | 5 years 10 months 13 days | 6 years 6 months 10 days
Weighted Average Remaining Contractual Term Vested and Expected to Vest (in years) |  | 6 years 11 months 8 days | 7 years 10 months 2 days
Aggregate Intrinsic Value, Outstanding |  | $ 35,414,546 | $ 26,515,544
Aggregate Intrinsic Value, Exercisable |  | 26,301,295 | 17,679,562
Aggregate Intrinsic Value, Vested and Expected to Vest |  | $ 35,414,546 | $ 26,515,544
2021 Stock Plan |  |  |
Stock Options and Restricted Stock Units |  |  |
Number of Options, Outstanding - Beginning balance (in shares) |  | 1,027,500 |
Number of Options, Forfeited/Expired (in shares) |  | (33,500) |
Number of Options, Outstanding - Ending balance (in shares) |  | 994,000 |
Number of Options Exercisable (in shares) |  | 31,250 |
Number of Options, Vested and Expected to Vest (in shares) |  | 994,000 |
Weighted Average Exercise Price Outstanding beginning balance (in dollars per shares) |  | $ 3.46 |
Weighted Average Exercise Price Forfeited/Expired (in dollars per shares) |  | 3.41 |
Weighted Average Exercise Price Outstanding Ending balance (in dollars per shares) |  | 3.46 |
Weighted Average Exercise Price Exercisable (in dollars per shares) |  | 5.20 |
Weighted Average Exercise Price Vested and Expected to Vest (in dollars per shares) |  | $ 3.46 |
Weighted Average Remaining Contractual Term Outstanding (in years) |  | 9 years 6 months 3 days |
Weighted Average Remaining Contractual Term Exercisable (in years) |  | 9 years 3 months 14 days |
Weighted Average Remaining Contractual Term Vested and Expected to Vest (in years) |  | 9 years 6 months 3 days |
Aggregate Intrinsic Value, Outstanding |  | $ 5,051,370 |
Aggregate Intrinsic Value, Exercisable |  | 104,500 |
Aggregate Intrinsic Value, Vested and Expected to Vest |  | $ 5,051,370 |
Non employee director | 2013 Stock Plan |  |  |
Stock Options and Restricted Stock Units |  |  |
Number of options, Granted (in shares) | 25,000 |  | 110,000

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