Net Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Summary of Basic And Diluted Net Loss Per Share Attributable To Common Stockholders

Basic and diluted net loss per share attributable to common stockholders was calculated as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
	(in thousands, except share and per share amounts)						(in thousands, except share and per share amounts)
Numerator
Net loss	$	(8,348	)	$	(6,897	)	$	(16,149	)	$	(14,090	)
Accretion of issuance costs on redeemable convertible preferred stock		(429	)		(33	)		(456	)		(51	)
Accrued dividends on redeemable convertible preferred stock		(2,187	)		(1,476	)		(3,957	)		(2,728	)
Net Loss attributable to common stockholders	$	(10,964	)	$	(8,406	)	$	(20,562	)	$	(16,869	)
Denominator:
Weighted-average common shares outstanding—basic and diluted		1,488,489			1,429,484			1,488,489			1,413,935
Net loss per share attributable to common stockholders—basic and diluted	$	(7.37	)	$	(5.88	)	$	(13.81	)	$	(11.93	)

Summary of Potentially Dilutive Shares Excluded From The Calculation of Diluted Net Loss

The following common stock equivalents outstanding at June 30, 2020 and 2019 have been excluded from the calculation of diluted net loss per share because their inclusion would have been antidilutive:

	June 30,
	2020		2019
Options to purchase common stock		1,073,046		812,539
Unvested restricted common stock		—		5,376
Redeemable convertible preferred stock		14,948,249		6,365,368