Note 8 - Share-based Compensation

9 Months Ended

Sep. 30, 2024

Notes to Financial Statements

Share-Based Payment Arrangement [Text Block]

8. Share-based Compensation

Our Fourth Amended and Restated 2006 Stock Option and Incentive Plan allows for granting of incentive stock options, non-qualified stock options, stock appreciation rights, restricted stock units, performance-based restricted stock units, unrestricted stock awards, and deferred stock awards to our officers, employees, directors and consultants. The components of share-based compensation expense included in the consolidated statements of operations are as follows:

	Three months ended				Nine months ended
	September 30,				September 30,
	2024		2023		2024		2023
	(in thousands)				(in thousands)
Stock option awards	$	744	$	676	$	2,217	$	2,009
Restricted stock units		556		481		1,690		1,443
Performance-based restricted stock units		310		156		922		463
Total share-based compensation	$	1,610	$	1,313	$	4,829	$	3,915

Stock-based compensation is included in our consolidated statements of operations as follows:

	Three months ended				Nine months ended
	September 30,				September 30,
	2024		2023		2024		2023
	(in thousands)				(in thousands)
Cost of sales	$	218	$	168	$	657	$	504
Sales and marketing		276		248		821		712
General and administrative		952		765		2,860		2,310
Research and development		164		132		491		389
Total stock-based compensation	$	1,610	$	1,313	$	4,829	$	3,915

We did not grant any options during the nine months ended September 30, 2024. During the nine months ended September 30, 2023, we granted options for the purchase of 1,660 shares of our common stock. During the nine months ended September 30, 2024 and 2023, we granted restricted stock units of 280 and 944, respectively. We did not grant any performance-based restricted stock units during the nine months ended September 30, 2024. During the nine months ended September 30, 2023, we granted performance-based restricted stock units of 310. We issued 162,075 and 179,954 shares of common stock following the exercise or vesting of underlying stock options, restricted stock units and performance-based restricted stock units during the nine months ended September 30, 2024 and 2023, respectively.