Capital Stock (Tables)

9 Months Ended

Sep. 30, 2021

Equity [Abstract]

Summary of Redeemable Convertible Preferred Stock

As of December 31, 2020, the Company’s redeemable convertible preferred stock consisted of the following:

	Shares		Shares Issued and		Net Carrying		Liquidation
	Authorized		Outstanding		Value		Value
Series A		14,115,898		3,274,913	$	15,020	$	16,763
Series B		30,996,574		7,191,256		33,406		33,523
Series C		58,243,355		13,512,578		72,654		72,840
Total		103,355,827		23,978,747	$	121,080	$	123,126

Summary of Number of Shares of Common Stock into Which Redeemable Convertible Preferred Stock Shares Converted

The following table summarizes the number of shares of common stock into which each share of redeemable convertible preferred stock could have been converted as of December 31, 2020:

	Initial		Conversion		Conversion
	Conversion		Price as of		Ratio to
	Price		December 31, 2020		Common Stock
Series A	$	5.1185	$	5.1185	1
Series B	$	4.6616	$	4.6616	1
Series C	$	5.3905	$	5.3905	1

Summary of Shares of Common Stock Reserved for Future Issuance

The Company had shares of common stock reserved for future issuance upon the exercise or conversion of the following:  

	September 30,		December 31,
	2021		2020
Redeemable convertible preferred stock		—		23,978,747
Common stock option grants issued and outstanding under 2014 Plan		4,111,225		4,587,700
Common shares issuable on conversion of convertible notes payable		—		1,470,947
Common stock reserved for issuance under 2021 Plan (which superseded the 2014 Plan)		2,955,624		206,012
Common stock option grants issued and outstanding under 2021 Plan		507,842		—
Restricted stock units issued and outstanding		1,763,445		—
Common stock reserved for issuance under ESPP		710,189		—
Total shares of common stock reserved for future issuance		10,048,325		30,243,406