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Net Loss Per Share (Tables)
9 Months Ended
Sep. 30, 2020
Earnings Per Share [Abstract]  
Summary of Potentially Dilutive Securities Excluded from Computation of Diluted Weighted-Average Shares Outstanding
The following table presents securities that have been excluded from the computations of diluted weighted-average shares outstanding as they would be anti-dilutive:
 Nine Months Ended September 30,
 20202019
Unvested common stock from early exercise of options36,772 75,043 
Stock options to purchase common stock6,577,620 5,892,781 
Common stock offering from ESPP12,482 — 
Total6,626,874 5,967,824