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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Convertible preferred stock, shares authorized	51,981,513	41,053,358
Convertible preferred stock, shares issued	51,450,435	40,524,346
Convertible preferred stock, shares outstanding	51,450,435	40,524,346
Liquidation Preference	$ 76,619	$ 57,161
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	70,000,000	58,000,000
Common stock, shares issued	615,907	538,793
Common stock, shares outstanding	615,907	538,793
Series A convertible preferred stock
Convertible preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Convertible preferred stock, shares authorized	3,067,519	3,067,519
Convertible preferred stock, shares issued	2,819,027	2,819,027
Convertible preferred stock, shares outstanding	2,819,027	2,819,027
Liquidation Preference	$ 5,051	$ 4,766
Series A-1 convertible preferred stock
Convertible preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Convertible preferred stock, shares authorized	3,970,776	3,970,776
Convertible preferred stock, shares issued	3,730,366	3,730,366
Convertible preferred stock, shares outstanding	3,730,366	3,730,366
Liquidation Preference	$ 5,906	$ 5,572
Series A-2 convertible preferred stock
Convertible preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Convertible preferred stock, shares authorized	3,565,063	3,565,063
Convertible preferred stock, shares issued	3,565,063	3,565,063
Convertible preferred stock, shares outstanding	3,565,063	3,565,063
Liquidation Preference	$ 6,355	$ 5,997
Series B convertible preferred stock
Convertible preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Convertible preferred stock, shares authorized	30,450,000	30,450,000
Convertible preferred stock, shares issued	30,409,890	30,409,890
Convertible preferred stock, shares outstanding	30,409,890	30,409,890
Liquidation Preference	$ 43,269	$ 40,826
Series B-1 convertible preferred stock
Convertible preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Convertible preferred stock, shares authorized	10,928,155	0
Convertible preferred stock, shares issued	10,926,089	0
Convertible preferred stock, shares outstanding	10,926,089	0
Liquidation Preference	$ 16,038

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Face amount or stated value per share of common stock.

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