Note 9 - Net Loss Per Share of Common Stock

9 Months Ended

Sep. 30, 2021

Notes to Financial Statements

Earnings Per Share [Text Block]

9. Net loss per share of Common Stock

The following table summarizes the computation of basic and diluted net loss per share of the Company (in thousands, except per share data):

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2021			2020			2021			2020
Net loss	$	(11,086	)	$	(10,660	)	$	(26,195	)	$	(26,497	)
Basic and diluted net loss per share	$	(0.53	)	$	(0.66	)	$	(1.33	)	$	(1.69	)
Weighted-average shares used to compute basic and diluted net loss per share		20,763			16,055			19,758			15,658

Basic net loss attributable to common stockholders per share is computed by dividing the net loss attributable to common stockholders by the weighted-average number of common shares outstanding for the period. Diluted net loss attributable to common stockholders per share is computed by dividing the net loss attributable to common stockholders by the weighted-average number of common shares and dilutive common stock equivalents outstanding for the period, determined using the treasury-stock method and the as-if converted method, for convertible securities, if inclusion of these is dilutive. Because the Company has reported a net loss for each of the three and nine months ended September 30, 2021 and 2020, the Company did not have dilutive common stock equivalents and therefore diluted net loss per common share is the same as basic net loss per common share for those periods.

The following potentially dilutive securities outstanding at the end of the three and nine months ended September 30, 2021 and 2020 have been excluded from the computation of diluted shares outstanding:

	Nine Months Ended
	September 30,
	2021		2020
Options to purchase common stock		2,433,675		2,204,141
Restricted stock units		—		1,441