Share-Based Compensation (Tables)

6 Months Ended

Jun. 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 June 30,				Six Months Ended June 30,
Expense classification:	2019		2018		2019		2018
Manufacture and supply	$	72	$	345	$	116	$	345
Research and development		140		2,186		348		2,186
Selling, general and administrative		1,598		24,774		2,866		24,774
Total share-based compensation expenses	$	1,810	$	27,305	$	3,330	$	27,305

Share-based compensation from:
Restricted stock units	$	467	$	—	$	930	$	—
Stock options		1,323		7		2,380		7
Non-voting common shares		—		27,298		—		27,298
Employee stock purchase plan		20		—		20		—
Total share-based compensation expenses	$	1,810	$	27,305	$	3,330	$	27,305

Restricted Stock Units Awards

The following tables provides information about the Company’s restricted stock and stock option unit activity during the six months ended June 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		(59	)		15.03
Forfeited		(3	)		13.00
Unvested at June 30, 2019		143		$	14.70
Grant date fair value of shares vested during the period	$	896
Unrecognized compensation costs of RSU awards at June 30, 2019	$	1,881

Stock Option Activity

Stock options:	Number of Options			Weighted Average Exercise Price
	(in thousands)
Outstanding at December 31, 2018		1,033		$	14.72
Granted		975			7.51
Forfeited		(25	)		7.77
Exercised, expired		—			—
Outstanding at June 30, 2019		1,983		$	11.26
Vested or expected to vest at June 30, 2019		1,868		$	11.12
Exercisable at June 30, 2019		223		$	14.32

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	1.9 - 2.6	%