Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2019

The Company recognized share-based compensation in its

Expense classification:	Three-Months Ended March 31, 2019
Manufacturing and supply	$	44
Research and development		208
Selling, general and administrative		1,268
Total share-based compensation expenses	$	1,520

Share-based compensation from:
Restricted Stock Units		463
Stock Options		1,057
Total share-based compensation expenses	$	1,520

Restricted Stock Units Awards

The following table summarizes activity relative to the Company’s awards of RSUs for the three-month period ended March 31, 2019.

	Number of Units			Weighted Average Grant Date Fair Value Per Share
	(In thousands)
Unvested at December 31, 2018		205		$	14.77
Granted		—			—
Vested		(30	)		15.03
Forfeited		(3	)		13.00
Unvested, March 31, 2019		172		$	14.75

Stock Option Activity

No stock options were granted during the three-month period ended March 31, 2018 and accordingly, the following table summarizes the Company’s stock option activity only during the three-month period ended March 31, 2019:

	Number of Options		Weighted Average Exercise Price
	(In thousands)
Outstanding at December 31, 2018		1,033	$	14.72
Granted		845	$	7.96
Exercised, Forfeited, Expired		—
Outstanding at March 31, 2019		1,878	$	11.68
Vested or expected to vest at March 31, 2019		1,745	$	11.68
Exercisable at March 31, 2019		146	$	15.04

Valuation Assumptions for Determination of Fair Value of Options

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

	Three Months Ended March 31, 2019
Expected dividend yield	None
Expected volatility		85	%
Expected term (years)		6.1
Risk-free interest rate		2.5 - 2.6	%