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Basic and Diluted Net Loss per Common Share

6 Months Ended

Jun. 30, 2019

Basic and Diluted Net Loss per Common Share

The following table provides a reconciliation of the numerator and denominator used in computing basic and diluted net loss attributable to common stockholders per common share:



	Three Months Ended June 30,						Six Months Ended June 30,
(in thousands, except per share amounts)	2019			2018			2019			2018
Numerator:
Net loss attributable to common stockholders	$	(84,551	)	$	(61,833	)	$	(204,850	)	$	(111,751	)
Denominator:
Weighted average common shares outstanding — basic and diluted	238,089,824			188,621,423			225,848,013			182,303,128

Dilutive common stock equivalents would include the dilutive effect of common stock options, convertible debt units, RSUs, and warrants for common stock equivalents. Potentially dilutive common stock equivalents were excluded from the diluted earnings per share denominator for all periods because of their anti-dilutive effect.

The table below presents potential shares of common stock that were excluded from the computation as they were anti-dilutive using the treasury stock method:



	As of June 30,
(in thousands)	2019	2018
Options to purchase common stock	17,849	15,869
Convertible notes	462	40,850
Outstanding warrants, convertible to common stock	2,555	2,657
Unvested restricted stock units	5,885	3,556
Vested restricted stock units, unissued	227	111
Total number of potentially issuable shares	26,978	63,043