Equity Incentive Plans (Tables)

3 Months Ended

Mar. 31, 2023

Equity Incentive Plans

Summary of the Option Award Activity

The following table summarizes the stock option award activity for the three months ended March 31, 2023:

	Outstanding			Exercisable
January 1, 2023		1,268,850			357,215
Granted		—			—
Vested		—			129,320
Canceled or expired		(45,000	)		(25,000	)
Exercised		—			—
March 31, 2023		1,223,850			461,535

Summary of Total Stock-based Compensation Expense Recorded Related to Share-based Payment Awards

Total stock-based compensation recorded in the condensed statements of operations is allocated as follows (in thousands):

	Three Months Ended
	March 31,
	2023		2022
Research and development	$	31	$	20
Sales and marketing		2		1
General and administrative		51		40
Total stock-based compensation	$	84	$	61