The Company has two classes of common stock: Class A common stock and Class B common stock. Shares of Class A common stock and Class B common stock are identical, except with respect to voting and conversion rights. As of December 31, 2021 and March 31, 2022, 892 million and 893 million shares of Class A common stock were issued and outstanding, respectively. As of December 31, 2021 and March 31, 2022, 8 million shares of Class B common stock were issued and outstanding. As of December 31, 2021 and March 31, 2022, 3,500 million shares of Class A common stock and 8 million shares of Class B common stock were authorized.

Upon the close of the IPO, all outstanding shares of contingently redeemable convertible preferred stock converted into shares of Class A common stock. As of December 31, 2021 and March 31, 2022, no shares of preferred stock were outstanding and 10 million shares of preferred stock were authorized.

Because the rights of the holders of Class A and Class B common stock, including liquidation and dividend rights, are identical except with respect to voting and conversion rights, undistributed earnings are allocated on a proportionate basis. As a result, net loss per share attributable to common stockholders is the same for Class A and Class B common stock, whether on an individual or combined basis.

Prior to the IPO, the Company considered shares of contingently redeemable convertible preferred stock to be participating securities because they participated in any dividends declared on the Company's common stock on an “if-converted to common stock” basis. Holders of contingently redeemable convertible preferred stock did not participate in the net loss per share with common stockholders, as they did not have a contractual obligation to share in the Company's losses.

Diluted net loss per share is computed by giving effect to all potential shares of common stock to the extent dilutive, including stock options, unvested RSUs, and stock warrants. Potential shares of common stock are excluded from the computation of diluted net loss per share if their effect would have been anti-dilutive for the periods presented or if the issuance of shares is contingent upon events that did not occur by the end of the period, in the case of stock options with a

market condition. The number of potential shares of common stock outstanding during each period that were excluded from the computation of diluted net loss per share is as follows (in millions):


	Three Months Ended March 31,
	2021	2022
Stock warrants	12	12
Contingently redeemable convertible preferred stock	561	—
Stock options	67	65
Restricted stock units	18	39
Total	658	116

A reconciliation of the numerator and denominator used in the calculation of basic and diluted net loss per share is as follows (in millions, except per share data):


	Three Months Ended March 31,
	2021		2022
Numerator
Net loss attributable to Rivian	$	(414)	$	(1,593)
Net loss attributable to common stockholders, basic and diluted	$	(414)	$	(1,593)

Denominator
Weighted-average Class A and Class B common shares outstanding - basic	101		901
Effect of dilutive securities	—		—
Weighted-average Class A and Class B common shares outstanding - diluted	101		901

Net loss per share attributable to Class A and Class B common stockholders, basic and diluted	$	(4.10)	$	(1.77)