The following table presents the calculation of basic and diluted net loss per share attributable to common stockholders (in thousands, except per share data):


	Three Months Ended March 31,
	2022		2021

Net loss attributable to common stockholders	$	(5,709)	$	(154,918)

Weighted-average shares outstanding – Basic and Diluted	151,683,819		61,693,067

Net loss per share – Basic and Diluted	$	(0.04)	$	(2.51)

Due to the net losses for the three months ended March 31, 2022 and 2021, basic and diluted net loss per common share were the same, as the effect of potentially dilutive securities would have been anti-dilutive.

The following outstanding balances of common share equivalent securities have been excluded from the calculation of diluted weighted-average common shares outstanding because the effect is anti-dilutive for the periods presented:


	March 31, 2022	March 31, 2021
Stock options	3,707,113	4,379,633
RSUs	4,633,968	—
Warrants	11,461,227	3,362,047
Number of securities outstanding	19,802,308	7,741,680