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Common Stock (Tables)

12 Months Ended

Dec. 31, 2021

Common Stock.

Schedule of reserved common stock

​

​	​	​
​	​	As of
​	​	December 31,
​		2021
Common shares reserved for exercise of pre-funded warrants	​	2,179,487
Common shares reserved for future issuance under the 2018 ESPP	​	1,137,373
Common shares reserved for exercise of outstanding stock options under the 2017 and 2018 Plans	​	3,743,400
Common shares reserved for future issuance under the 2018 Plan	​	2,394,091
Common shares reserved for unvested restricted stock units under the 2018 Plan	​	314,901
​	​	9,769,252

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