Net Loss per Share

12 Months Ended

Dec. 31, 2020

Net loss per share attributable to common stockholders:

Net Loss per Share

12. Net Loss per Share

The following is a reconciliation of the numerator (net loss) and the denominator (number of shares) used in the basic and diluted earnings per share calculations:

	Year Ended December 31,
	2020			2019
Net loss	$	(6,646,459	)	$	(4,591,284	)
Cumulative dividend on Series A Convertible Preferred Stock		(1,369,421	)		(1,429,400	)
Net loss attributable to common stockholders	$	(8,015,880	)	$	(6,020,684	)
Weighted average number of common shares and equivalents:		72,746,268			63,051,581
Basic EPS	$	(0.11	)	$	(0.10	)
Diluted EPS	$	(0.11	)	$	(0.10	)

The following table sets forth the number of common shares that were excluded from the computation of diluted earnings per share because their inclusion would have been anti-dilutive as follows:

	December 31,
	2020		2019
Shares issuable upon vesting/exercise of:
Options to purchase common stock		2,456,979		1,857,599
Series A Convertible Preferred Stock and Accumulated Dividends		43,483,062		42,497,068
Series B Convertible Preferred Stock		5,610,121		5,610,121
Restricted stock units		1,112,473		840,712
Warrants		15,385		46,155
		52,678,020		50,851,655