Net loss per share (Tables)

12 Months Ended

Mar. 31, 2020

Net loss per share

Schedule of calculation of basic and diluted net loss per share attributable to common stockholders

	Year Ended March 31,
	2020		2019		2018
Numerator:
Net loss attributable to common stockholders	$	(52,625)	$	(30,834)	$	(19,702)
Denominator:
Weighted average common shares outstanding, basic and diluted		34,261,548		23,198,400		4,978,539
Net loss per share attributable to common stockholders, basic and diluted	$	(1.54)	$	(1.33)	$	(3.96)

Schedule of anti-dilutive securities excluded from the computation of diluted net loss per share attributable to common shareholders

	Year Ended March 31,
	2020	2019	2018
Options to purchase common stock	4,964,381	3,721,784	2,520,247
Convertible preferred stock (as converted to common stock)	—	—	19,157,360
Warrants to purchase convertible preferred stock (as converted to common stock)	497,344	497,344	497,344
	5,461,725	4,219,128	22,174,951