Loss per Share

3 Months Ended

Mar. 31, 2022

4.	Loss per Share

The net loss per share is calculated by dividing the net loss attributable to common stockholders by the weighted average number of shares outstanding for the three months ended March 31, 2022, and 2021. In accordance with ASC Topic 260-10-45-13, Earnings Per Share, the weighted average of number of shares outstanding includes outstanding common stock and shares issuable for nominal consideration. Accordingly, warrants issued with a $0.01 per share exercise price, are included in weighted average shares outstanding as follows (shares in thousands):

	Three Months Ended
	March 31, 2022		March 31, 2021
Weighted average shares outstanding
Common shares		498,723		481,620
Common shares issuable assuming excercise of nominally priced warrants		26,691		36,871
Weighted average shares outstanding		525,414		518,491

Diluted net loss per share would be computed by dividing the net loss attributable to common stockholders by the weighted average number of shares of common stock and dilutive common stock equivalents outstanding. To the extent that securities are “anti-dilutive,” they are excluded from the calculation of diluted net loss per share. As a result of the net loss for the three months ended March 31, 2022 and 2021, all potentially dilutive shares were anti-dilutive and therefore excluded from the computation of diluted net loss per share. Anti-dilutive equity securities consist of the following at March 31, 2022 and 2021, respectively (in thousands):

	2022		2021
Common stock options		31,759		31,864
Common stock purchase warrants		183,435		142,266
Convertible notes payable		94,172		60,329
		309,366		234,459