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(Tables)
12 Months Ended
Dec. 31, 2019
Equity [Abstract]  
Schedule of Stock by Class
The Company’s common stock has been reserved for the following potential future issuances:
 
As of December 31,
 
2019
 
2018
Shares underlying outstanding stock options
4,494,889

 
7,588,405
Shares available for future stock option grants
2,726,225

 
3,556,507
Shares available for issuance under the 2018 Employee Stock Purchase Plan
689,917

 
922,250
Total
7,911,031

 
12,067,162