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Stockholders' Equity (Tables) | 6 Months Ended
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Jun. 30, 2023
Stockholders' Equity |
Schedule of Restricted Stock Units activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted
​ | ​ | ​ | ​ | Average
​ | ​ | Number of | ​ | Grant Date Value
​ |  | RSUs |  | Per Share
RSUs non-vested January 1, 2023 |  | 172,800 | ​ | $ | 1.80
Granted |  | 86,205 | ​ |  | 2.32
Vested |  | (150,578) | ​ |  | 1.80
Forfeited |  | (22,222) | ​ |  | 1.80
RSUs non-vested June 30, 2023 |  | 86,205 | ​ | $ | 2.32
​ | ​ | ​ | ​ | ​ | ​
Vested RSUs undelivered June 30, 2023 |  | 29,611 | ​ | $ | 3.68
Schedule of Black-Scholes option pricing model to stock options granted | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Three Months Ended | ​ | For the Six Months Ended
​ | ​ | June 30, | ​ | June 30,
​ |  | 2023 |  | 2022 |  | 2023 |  | 2022
Expected term (years) | ​ | 5.50 - 10.00 |  | 5.09 - 5.50 | ​ | ​ | 5.50 - 10.00 | ​ | ​ | 0.58 - 10.00
Risk free interest rate | ​ | 3.44% - 4.02% | ​ | 2.79% | ​ | ​ | 3.44% - 4.18% | ​ | ​ | 0.76% - 2.79%
Expected volatility | ​ | 82% - 94% | ​ | 88% | ​ | ​ | 82% - 95% | ​ | ​ | 82% - 90%
Expected dividends | ​ | 0.00% | ​ | 0.00% | ​ | ​ | 0.00% | ​ | ​ | 0.00%
Summary of the option activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  |  |  | ​ |  |  | ​ |  | ​ |
​ | ​ | ​ |  | ​ |  | ​ | ​ | ​ | ​
​ | ​ | ​ |  | Average |  | Remaining |  | Aggregate
​ |  | Number of |  | Exercise |  | Life |  | Intrinsic
​ |  | Options |  | Price |  | In Years |  | Value
Outstanding, January 1, 2023 |  | 5,380,553 | ​ | $ | 3.55 |  |  |  | ​ |
Granted |  | 677,190 | ​ |  | 2.39 |  |  |  | ​ |
Exercised |  | (88,999) | ​ |  | 1.83 |  |  |  | ​ |
Forfeited/ Expired |  | (783,666) | ​ | ​ | 3.88 |  | ​ | ​ | ​ | ​
Outstanding June 30, 2023 | ​ | 5,185,078 | ​ | $ | 3.37 | ​ | 7.1 | ​ | $ | 962,979
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Exercisable June 30, 2023 |  | 3,582,370 | ​ | $ | 3.69 |  | 6.2 | ​ | $ | 501,462
Schedule of information related to stock options | The following table presents information related to stock options as of June 30, 2023: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Options Outstanding |  | Options Exercisable
​ | ​ | ​ | ​ |  | Weighted | ​ | ​
​ | ​ |  | Outstanding |  | Average |  | Exercisable
Exercise |  | Number of |  | Remaining Life |  | Number of
Price |  | Options |  | In Years |  | Options
​ | $1.00 - $1.99 |  | 1,407,183 | ​ | 4.7 |  | 884,183
​ | $2.00 - $2.99 |  | 1,473,663 | ​ | 6.9 |  | 844,473
​ | $3.00 - $3.99 |  | 908,528 | ​ | 6.8 |  | 694,510
​ | $4.00 - $4.99 |  | 350,500 | ​ | 8.1 |  | 216,178
​ | $5.00 - $5.99 |  | 50,805 | ​ | 4.3 |  | 50,638
​ | $6.00 - $6.99 |  | 843,759 | ​ | 6.5 |  | 741,748
​ | $7.00+ |  | 150,640 | ​ | 4.8 |  | 150,640
​ | ​ | ​ | 5,185,078 | ​ | 6.2 | ​ | 3,582,370

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