Net Loss Per Share

6 Months Ended

Jun. 30, 2022

Net Loss Per Share

Net Loss Per Share

10.  Net Loss Per Share

	Three months ended June 30,				Six months ended June 30,
	2022		2021		2022		2021
	(in thousands, except shares and per share data)				(in thousands, except shares and per share data)
Net loss	$	(1,345)	$	(382)	$	(3,522)	$	(1,256)
Prefered stock dividends		(18)		—		(18)		—
Net loss attributable to common stockholders	$	(1,363)	$	(382)	$	(3,540)	$	(1,256)
Basic and diluted weighted average common shares outstanding		11,230,525		9,688,407		10,996,996		9,411,611
Basic and diluted net loss per share attributable to common stockholders	$	(0.12)	$	(0.04)	$	(0.32)	$	(0.13)

The following potential common shares were excluded from the calculation of diluted net loss per share attributable to common stockholders for the six months ended June 30, 2022 and 2021 because including them would have had an anti-dilutive effect:

	Six months ended June 30,
	2022	2021
Options to purchase common stock	2,402,603	1,534,894
Warrants to purchase common stock	1,888,622	2,043,201
Series E convertible preferred stock	686,680	—
Total	4,977,905	3,578,095