Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Loss Per Share

The following table sets forth the computation of basic and diluted net loss per share (in thousands, except share and per‑share

data):

	Three Months Ended March 31,
	2020			2019
Numerator:
Net loss attributable to common stockholders	$	(19,620	)	$	(12,074	)
Denominator:
Weighted‑average common shares and pre-funded warrants outstanding—basic and diluted	94,723,513			38,447,319
Net loss per share attributable to common stockholders —basic and diluted	$	(0.21	)	$	(0.31	)

Schedule of Potential Common Shares Issuable Upon Conversion of Warrants

Potential dilutive common share equivalents consist of the following:

	March 31,
	2020	2019
Stock options to purchase common stock	7,745,936	4,564,742
Unvested restricted stock units	170,313	275,000
Stock warrants to purchase common stock	23,084,120	95,619
Total	31,000,369	4,935,361