Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Summary of Reserved Shares of Common Stock

We have reserved shares of common stock for the following as of December 31, 2019:

Shares issuable upon the exercise of outstanding common stock options and    the vesting of outstanding common restricted stock units granted	16,651,154
Shares available for future grant under the 2019 Plan	15,396,254
Shares available for future grant under the Employee Stock Purchase Plan	1,551,917
Shares to be issued upon conversion of a common stock warrant	56,875
Total shares of common stock reserved for future issuance	33,656,200