Net loss per common share

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Net loss per common share

15. Net loss per common share

For the three and nine months ended September 30, 2020 and 2019, respectively, the following common stock equivalents were excluded from the computation of diluted net loss per share as the results would have been anti-dilutive.

	Three and nine months ended September 30, 2020		Three and nine months ended September 30, 2019
Stock options		—		480,000
Warrants to purchase shares of common stock		515,561,379		120,610,091
Convertible notes		4,964,723,277		94,933,731
		5,480,284,656		216,023,822