Earnings Per Share

9 Months Ended

Sep. 30, 2021

F. Earnings Per Share – Basic earnings per share (EPS) amounts are computed by dividing earnings by the average number of common shares outstanding. Diluted EPS amounts assume the issuance of common stock for all potentially dilutive share equivalents outstanding.

The information used to compute basic and diluted EPS attributable to Alcoa Corporation common shareholders was as follows (shares in millions):

	Third quarter ended September 30,					Nine months ended September 30,
	2021		2020			2021		2020
Net income (loss) attributable to Alcoa Corporation	$	337	$	(49	)	$	821	$	(166	)
Average shares outstanding – basic		187		186			187		186
Effect of dilutive securities:
Stock options		—		—			—		—
Stock units		4		—			3		—
Average shares outstanding – diluted		191		186			190		186

Options to purchase less than five hundred thousand shares of common stock outstanding at September 30, 2021 were excluded because they had a weighted average exercise price of $53.30 per share which was greater than the average market price of Alcoa Corporation’s common stock.

In the third quarter and nine-month period of 2020, basic average shares outstanding and diluted average shares outstanding were the same because the effect of potential shares of common stock was anti-dilutive. Had Alcoa generated net income in the third quarter or nine-month period of 2020, one million common share equivalents related to six million outstanding stock units and stock options combined would have been included in diluted average shares outstanding for the periods. Options to purchase two million shares of common stock outstanding at September 30, 2020 were excluded because they had a weighted average exercise price of $26.50 per share which was greater than the average market price of Alcoa Corporation’s common stock.