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Summary of Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2021
Accounting Policies [Abstract]  
Summary of Outstanding Potentially Dilutive Shares of Common Stock Excluded from Calculation of Diluted Net Loss Per Share

The following outstanding potentially dilutive shares of common stock have been excluded from the calculation of diluted net loss per share for the periods presented due to their anti-dilutive effect:

 

 

 

March 31,

 

 

December 31,

 

 

 

2021

 

 

2020

 

Options to purchase common stock

 

 

6,263,306

 

 

 

5,071,740

 

Common stock subject to repurchase

 

 

222,660

 

 

 

256,056

 

Employee stock purchase plan contingently issuable

 

 

32,578

 

 

 

12,931

 

PSUs contingently issuable

 

 

227,537

 

 

 

 

Underwriter option shares contingently issuable

 

 

 

 

 

562,500

 

Total

 

 

6,746,081

 

 

 

5,903,227