Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2020

Canceled/expired

Stock-based employee compensation expense

The following table summarizes the amount of share-based compensation expense by line item on the statements of operations:

Share-based compensation expense		Three Months Ended
		March 31,
(in thousands)		2020		2019
Cost of product revenue	$	-	$	1
Research and development expense		39		123
Sales, marketing, general and administrative expense		150		227
	$	189	$	351

Options activity and positions

The following table summarizes shares, weighted-average exercise price, weighted-average remaining contractual term and aggregate intrinsic value of options outstanding and options exercisable as of March 31, 2020:

				Weighted-
			Weighted-	Average
			Average	Remaining		Aggregate
			Exercise	Contractual		Intrinsic
Options	Shares		Price	Term (years)		Value
Outstanding as of March 31, 2020	4,616,000	$	1.71	6.4	$	-
Exercisable as of March 31, 2020	2,497,000	$	2.39	4.3	$	-