Basic loss per common share is calculated by dividing net loss by the weighted-average number of shares of common stock outstanding during the period. Diluted loss per common share is calculated using the treasury share method by giving effect to all potentially dilutive securities that were outstanding. Potentially dilutive options, restricted stock units and warrants to purchase common stock that were outstanding during the periods presented were excluded from the diluted loss per share calculation for the periods presented because such shares had an anti-dilutive effect due to the net loss reported in those periods. Therefore, basic and diluted loss per common share is the same for each of the years ended December 31, 2023 and 2022.

The following is the computation of loss per common share for the years ended December 31, 2023 and 2022:


	Year Ended December 31,
		2023		2022
Net loss		$	(16,914)	$	(2,582)
Weighted-average basic and diluted common shares outstanding		8,013,840		4,619,471
Loss per share - basic and diluted		$	(2.11)	$	(0.56)

The outstanding securities presented below were excluded from the calculation of loss per common share, for the periods presented, because such securities would have been anti-dilutive due to the Company’s loss per share during that period:


	December 31,
	2023	2022
Options to purchase common stock	12,115	222,833
Restricted stock units	3,043	20,885
Performance stock units	—	97,643
Warrants to purchase common stock	50,110	576,261