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SHARE-BASED COMPENSATION (Tables) | 9 Months Ended
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Sep. 30, 2021
SHARE-BASED COMPENSATION. |
Schedule of Common Stock Options | The following table summarizes information related to the Company’s common stock options as of September 30, 2021:
​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | Weighted
​ | ​ | Number | ​ | Average
​ | ​ | of Stock | ​ | Exercise
​ | ​ | Options | ​ | Price
Options outstanding at January 1, 2021 |  | 3,183,708 | ​ | $ | 1.71
Granted |  | 315,620 | ​ |  | 7.25
Exercised |  | (185,951) | ​ |  | 2.00
Canceled/Forfeited |  | (76,333) | ​ |  | 3.33
Expired |  | — | ​ |  | —
Options outstanding at September 30, 2021 |  | 3,237,044 | ​ | $ | 2.19
Options exercisable at September 30, 2021 |  | 2,614,425 | ​ | $ | 1.66

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