Loss per common share (Tables)

12 Months Ended

Dec. 31, 2021

Summary of computation of basic and diluted loss per common share

The following table sets forth the computation of basic and diluted loss per common share for the periods presented (in thousands, except per share amounts):

	2021			2020			2019
Numerator:
Net loss	$	(172,415	)	$	(183,524	)	$	(176,145	)
Denominator:
Weighted average common shares for basic loss per common share		397,992			275,649			246,353
Effect of dilutive securities		—			—			—
Weighted average common shares for diluted loss per common share		397,992			275,649			246,353
Loss per common share, basic and diluted	$	(0.43	)	$	(0.67	)	$	(0.72	)

Schedule of antidilutive securities excluded from computation of earnings per share

The following table sets forth the outstanding securities as of the periods presented which were not included in the calculation of diluted earnings per common share during 2021, 2020 and 2019 (in thousands):

	As of December 31,
	2021		2020		2019
Stock options		17,655		23,782		25,030
RSUs		13,584		7,061		1,240
PSUs		8,203		2,404		—
Warrants		5,127		6,535		1,833
		44,569		39,782		28,103