Net loss per share (Tables)

12 Months Ended

Dec. 31, 2019

Net loss per share

Schedule of basic and diluted net loss per share

	Year ended December 31,
	2019		2018		2017
Numerator:
Net loss	$	(43,037)	$	(16,237)	$	(12,723)
Denominator:
Weighted-average common shares outstanding, basic and diluted		17,859,935		914,375		911,777
Net loss per share, basic and diluted	$	(2.41)	$	(17.76)	$	(13.95)

Schedule of potentially dilutive securities that were not included in the diluted per share calculations

	Year ended December 31,
	2019	2018	2017
Series A Preferred Stock	—	1,604,574	1,604,574
Series B Preferred Stock	—	5,730,612	5,730,612
Series C Preferred Stock	—	8,074,447	8,074,447
Series D Preferred Stock	—	—	—
Options issued and outstanding	2,999,284	1,606,325	1,434,150
Total	2,999,284	17,015,958	16,843,783