Diluted net loss per share is the same as basic net loss per share for all periods presented because the effects of potentially dilutive items were antidilutive, given the Company’s net loss. The following table presents a summary of the number of securities that have been excluded from the calculation of weighted-average shares of common stock outstanding because the effect is antidilutive for each of the periods indicated.


	Three and Nine Months Ended September 30,
	2020	2019
Stock options	4,023,741	4,404,386
Restricted stock units	3,431,829	1,454,169
Performance restricted stock units	1,760,164	202,764
Shares related to convertible senior notes	3,432,837	—
Total antidilutive securities	12,648,571	6,061,319

The following table presents the calculation of the Company’s basic and diluted net loss per share for each of the periods indicated.


	Three Months Ended September 30,						Nine Months Ended September 30,
	2020		2019		2020		2019
Numerator (in thousands):
Net loss	$	(52,554)	$	(141,112)	$	(178,827)	$	(190,638)
Denominator:
Weighted-average shares of common stock outstanding, basic and diluted	68,580,439		63,358,890		66,368,686		60,690,536
Net loss per share, basic and diluted	$	(0.77)	$	(2.23)	$	(2.69)	$	(3.14)