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Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2020

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Option Activity

Stock option activity under the 2019 Plan is set forth below for the nine months ended September 30, 2020:

										Weighted
										Average
						Number of				Exercise
		Shares				Shares				Price Per
		Available				Outstanding				Share
Balances at December 31, 2019			1,874,759				1,313,468			$	9.77
Stock options authorized			873,321				—
Stock options granted			(343,621	)			343,621				34.75
Stock options exercised			—				(122,743	)			4.62
Stock options forfeited			16,381				(16,381	)			11.61
Balances at September 30, 2020			2,420,840				1,517,965			$	15.66

Summary of RSU Activity

RSU activity under the 2019 Plan is set forth below for the nine months ended September 30, 2020:

						Weighted
						Average
		Number of				Grant Date
		Shares				Fair Value
		Outstanding				Per Share
Balances at December 31, 2019			—			$	—
RSUs granted			56,500				44.66
RSUs vested and settled			—				—
RSUs forfeited			—				—
Balances at September 30, 2020			56,500			$	44.66

Summary of Stock-based Compensation Expense

Total stock-based compensation expense recognized for options and RSUs granted to both employees and non-employees and for the employee stock purchase plan was as follows (in thousands):

		For the Three Months Ended September 30,								For the Nine Months Ended September 30,
		2020				2019				2020				2019
Research and development		$	1,125			$	212			$	3,450			$	611
General and administrative			880				219				2,678				544
Total stock-based compensation expense		$	2,005			$	431			$	6,128			$	1,155

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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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-Publisher FASB
-Name Accounting Standards Codification
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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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