Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2019

The Company recognized share-based compensation in its Condensed Consolidated Statements of Operations and Comprehensive Loss during 2019 and 2018 as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
Expense classification:	2019		2018		2019		2018
Manufacture and supply	$	60	$	32	$	176	$	377
Research and development		188		192		536		2,378
Selling, general and administrative		1,622		1,102		4,480		25,786
Total share-based compensation expenses	$	1,870	$	1,236	$	5,200	$	28,541

Share-based compensation from:
Restricted stock units	$	473	$	610	$	1,403	$	610
Stock options		1,397		626		3,777		633
Non-voting common shares		--		—		--		27,298
Employee stock purchase plan		--		—		20		—
Total share-based compensation expenses	$	1,870	$	1,236	$	5,200	$	28,541

Restricted Stock Units Awards

The following tables provide information about the Company’s restricted stock and stock option unit activity during the nine months ended September 30, 2019:

Restricted stock units:	Number of Units			Weighted Average Grant Date Fair Value
	(in thousands)
Unvested at December 31, 2018		205		$	14.77
Granted		--			--
Vested		(95	)		14.91
Forfeited		(3	)		13.00
Unvested at September 30, 2019		107		$	14.70
Grant date fair value of shares vested during the period	$	1,421
Unrecognized compensation costs of RSU awards at September 30, 2019	$	1,409

Stock Option Activity

Stock options:	Number of Options			Weighted Average Exercise Price
	(in thousands)
Outstanding at December 31, 2018		1,033		$	14.72
Granted		1,253			6.67
Forfeited		(30	)		7.73
Exercised, expired		--			--
Outstanding at September 30, 2019		2,256		$	10.34
Vested or expected to vest at September 30, 2019		2,113		$	10.28
Exercisable at September 30, 2019		345		$	14.79

Valuation Assumptions for Determination of Fair Value of Options

The fair values of stock options granted during 2019 were estimated using the Black-Scholes-Merton pricing model based on the following assumptions:

Expected dividend yield	0	%
Expected volatility	85 - 95	%
Expected term (years)	5.5 - 6.1
Risk-free interest rate	1.5 - 2.6	%