Net Loss Per Share

6 Months Ended

Jun. 30, 2020

The Company has reported a net loss for the three and six months ended June 30, 2020, and 2019. For this reason basic and diluted net loss per share are the same for all periods presented. Since the shares underlying the 8,342,128 pre-funded warrants were issuable for little or no consideration, they are considered outstanding for both basic and diluted earnings per share. During the second quarter 2020, all 8,342,128 pre-funded warrants were exercised, but had no effect on basic and diluted shares at exercise because all were included in both basic and diluted from the period of issuance. 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 June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Numerator:
Net loss attributable to common stockholders	$	(24,081	)	$	(16,394	)	$	(43,701	)	$	(28,468	)
Denominator:
Weighted‑average common shares and pre-funded warrants outstanding—basic and diluted	96,785,915			44,855,083			95,754,714			41,668,902
Net loss per share attributable to common stockholders —basic and diluted	$	(0.25	)	$	(0.37	)	$	(0.46	)	$	(0.68	)

All potential dilutive common shares have been excluded from the computation of the diluted net loss per share for all periods presented, as the effect would have been anti-dilutive. Potential dilutive common share equivalents consist of the following:



	June 30,
	2020	2019
Stock options to purchase common stock	7,473,613	4,637,463
Unvested restricted stock units	159,375	275,000
Stock warrants to purchase common stock	14,841,100	95,619
Total	22,474,088	5,008,082