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Common Stock (Tables)

12 Months Ended

Dec. 31, 2020

Common Stock

Schedule of shares reserved for future issuance

​

​	​	​	​	​
​		As of December 31,
​		2020		2019
Shares reserved for outstanding stock option awards under the 2013 Stock Incentive Plan, as amended		174,362		312,342
Shares reserved for outstanding stock option awards and restricted stock units under the 2015 Stock Incentive Plan		3,839,345		4,254,357
Shares reserved for outstanding inducement stock option award		280,000		175,000
Remaining shares reserved, but unissued, for future awards under the 2015 Stock Incentive Plan		5,599,450		4,061,357
Remaining shares reserved, but unissued, for future awards under the 2015 Employee Stock Purchase Plan		2,137,127	​	1,630,199
​	​	12,030,284		10,433,255

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Schedule of common stock reserved for future issuance.

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