Equity Incentive Plans (Tables)

3 Months Ended

Mar. 31, 2020

Equity Incentive Plans

Summary of Weighted-Average Assumptions to Estimate Fair Value of Employee Stock Options

	Three Months Ended March 31,
	2020
Expected term (years)	6.00
Expected volatility	83.62	%
Risk-free interest rate	1.68	%
Dividend yield	—	%

Summary of Stock-Based Compensation Expense Recognized

	Three Months Ended March 31,
	2020		2019
Research and development	$	1,058	$	760
General and administrative		1,890		1,162
Total	$	2,948	$	1,922

Summary of Total Unrecognized Stock-Based Compensation Expense, Net of Estimated Forfeitures

	Unrecognized Compensation Expense		Average Remaining Vesting Period (Years)
Stock options	$	13,401	3.0
PRSUs	$	602	0.4
ESPP	$	194	0.4