Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2022

Basic and diluted net loss per share attributable to common stockholders was calculated as follows :


	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Numerator:
Net loss attributable to common stockholders ($ in millions)	$	(91.4)	$	(66.4)	$	(234.1)	$	(171.0)
Denominator:
Weighted average common shares outstanding — basic and diluted	66,877,100		61,580,145		63,482,945		61,086,238
Net loss per share attributable to common stockholders — basic and diluted	$	(1.37)	$	(1.08)	$	(3.69)	$	(2.80)

Antidilutive potential common shares

The Company excluded the following potential common shares, presented based on amounts outstanding at each period end, from the computation of diluted net loss per share attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect.


	Nine Months Ended September 30,
		2022	2021
Options to purchase common stock		9,936,571	6,032,798
Unvested restricted stock		1,735,651	130,241
Warrants for common stock (1)		412,969	—
Total		12,085,191	6,163,039

(1) Each outstanding warrant of Metromile assumed by the Company are converted automatically into warrants denominated in the Company's common stock with the number of warrants and exercise price adjusted based on the exchange ratio of 0.05263