Loss per Share

9 Months Ended

Sep. 30, 2021

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 and nine months ended September 30, 2021, and 2020. 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:

	Three Months Ended
	September 30, 2021		September 30, 2020
Weighted average shares outstanding
Common shares		481,619,621		302,119,428
Common shares issuable assuming exercise of nominally priced warrants		36,691,160		82,383,022
Weighted average shares outstanding		518,310,781		384,502,450

	Nine Months Ended
	September 30, 2021		September 30, 2020
Weighted average shares outstanding
Common shares		481,619,621		323,730,859
Common shares issuable assuming exercise of nominally priced warrants		36,750,535		2,674,538
Weighted average shares outstanding		518,370,156		326,405,397

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 and nine months ended September 30, 2021 and 2020, 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 September 30, 2021 and 2020, respectively (in thousands):

	2021		2020
Common stock options		31,760		32,618
Common stock purchase warrants		159,858		190,357
Convertible notes payable		98,675		56,989
		290,293		279,964