STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2022

Summary of Stock option and restricted stock activity

A summary of stock option and restricted stock activity under the 2022 Plan and Inducement Grants during the six months ended June 30, 2022 and 2021 is presented below:

(in thousands)	Options	Inducement Grants	RSAs
Outstanding at December 31, 2020	756	180	352
Granted	84	61	457
Options Exercised/RSAs Vested	(5)	—	(111)	(1)
Forfeited	(58)	—	(73)
Expired	—	—	—
Outstanding at June 30, 2021	777	241	625
Outstanding at December 31, 2021	747	241	707
Granted	36	—	669
Options Exercised/RSAs Vested	(1)	—	(209)	(2)
Forfeited	(37)	—	(24)
Expired	—	—	—
Outstanding at June 30, 2022	745	241	1,143

(1) Includes 25 thousand shares purchased from employees to cover employee income taxes related to income earned upon vesting of restricted stock. The shares purchased are held in treasury and the $0.8 million total purchase price for the shares is included in Treasury stock in our accompanying unaudited interim condensed consolidated balance sheets.

(2) Includes 56 thousand shares purchased from employees to cover employee income taxes related to income earned upon vesting of restricted stock. The shares purchased are held in treasury and the $1.6 million total purchase price for the shares is included in Treasury stock in our accompanying unaudited interim condensed consolidated balance sheets.

2016 Employee Stock Purchase Plan

Summary of allocated expense

(in thousands)	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Cost of sales	$	19	$	4	$	29	$	8
Research and development		15		6		22		11
Selling, general, and administrative		39		23		60		46
	$	73	$	33	$	111	$	65

2022 Plan

Summary of allocated expense

(in thousands)	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Cost of sales	$	124	$	2	$	259	$	2
Research and development		180		149		345		263
Selling, general, and administrative		3,379		2,660		6,278		4,383
	$	3,683	$	2,811	$	6,882	$	4,648