We compute net loss per share using the two-class method required for multiple classes of common stock. Our participating securities include any shares issued on the early exercise of stock options subject to repurchase because holders of such shares have non-forfeitable dividend rights in the event a dividend is paid on common stock.

In March 2017, we completed our initial public offering (“IPO”) in which we issued and sold 160.3 million shares of Class A common stock, inclusive of the over-allotment. In addition, on the closing of the IPO, our Chief Executive Officer (“CEO”) received an RSU award (“CEO award”) for 37.4 million shares of Series FP preferred stock, which was fully vested on grant and automatically converted into an equivalent number of shares of Class C common stock on the closing of the IPO. Following the IPO, we have three classes of authorized common stock – Class A common stock, Class B common stock, and Class C common stock.

Basic net loss per share is computed by dividing net loss attributable to each class of stockholders by the weighted-average number of such class of shares of stock outstanding during the period. Vested restricted stock units (“RSUs”) that have not been settled, including the vested CEO award, and restricted stock awards (“RSAs”) for which the risk of forfeiture has lapsed have been included in the appropriate common share class used to calculate basic net loss per share.

For the calculation of diluted net loss per share, net loss per share attributable to common stockholders for basic net loss per share is adjusted by the effect of dilutive securities, including awards under our equity compensation plans. Diluted net loss per share attributable to common stockholders is computed by dividing the resulting net loss attributable to common stockholders by the weighted-average number of fully diluted common shares outstanding. For the three months ended March 31, 2019 and 2018, our potentially dilutive shares relating to stock options, RSUs, RSAs, and common stock subject to repurchase, were not included in the computation of diluted net loss per share as the effect of including these shares in the calculation would have been anti-dilutive.

The numerators and denominators of the basic and diluted net loss per share computations for our common stock are calculated as follows for the three months ended March 31, 2019 and 2018:

	Three Months Ended March 31,
	2019									2018
	(in thousands, except per share data)
	Class A Common			Class B Common			Class C Common			Class A Common			Class B Common			Class C Common
Numerator:
Net loss	$	(239,860	)	$	(13,601	)	$	(56,946	)	$	(276,790	)	$	(32,989	)	$	(76,006	)
Net loss attributable to common stockholders	$	(239,860	)	$	(13,601	)	$	(56,946	)	$	(276,790	)	$	(32,989	)	$	(76,006	)
Denominator:
Basic shares:
Weighted-average common shares - Basic		1,035,932			58,741			245,942			911,906			108,683			250,409
Diluted shares:
Weighted-average common shares - Diluted		1,035,932			58,741			245,942			911,906			108,683			250,409
Net loss per share attributable to common stockholders:
Basic	$	(0.23	)	$	(0.23	)	$	(0.23	)	$	(0.30	)	$	(0.30	)	$	(0.30	)
Diluted	$	(0.23	)	$	(0.23	)	$	(0.23	)	$	(0.30	)	$	(0.30	)	$	(0.30	)

The following potentially dilutive shares were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive for the periods presented: