STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2019

STOCK-BASED COMPENSATION

Summary of Stock Options Outstanding

The following table summarizes stock options outstanding and changes for the three-month periods ending March 31, 2019 and 2018:

	March 31, 2019			March 31, 2018
		Weighted			Weighted
	Number of	Average		Number of	Average
	Stock	Exercise		Stock	Exercise
	Options	Price		Options	Price
Stock options outstanding at beginning of period	19,170	$	79.78	5,723	$	276.50
Granted	—		—	—		—
Expired	(280)		179.68	(112)		624.00
Stock options outstanding at end of period	18,890	$	78.21	5,611	$	269.50
Stock options exercisable at end of period	18,890	$	78.21	1,828	$	682.50

Summary of Stock Options Outstanding and Exercisable by Stock Option Plan

The following table summarizes stock options outstanding and exercisable by stock option plan at March 31, 2019:

	Outstanding Stock Options			Exercisable Stock Options
	Number of	Weighted		Number of	Weighted
	Outstanding	Average		Exercisable	Average
Stock Option Plan	Stock Options	Exercise  Price		Stock Options	Exercise Price
2004 Plan	96	$	1,752.25	96	$	1,752.25
2004 Directors’ Plan	11		9,332.73	11		9,332.73
2013 Plan	12,766		35.41	12,766		35.41
Replacement Stock Options-Alabama Graphite	5,568		80.96	5,568		80.96
Replacement Stock Options-Anatolia Energy	449		676.22	449		676.22
	18,890	$	78.21	18,890	$	78.21

Summary of Status of Non-vested Restricted Shares

The following table summarizes RSU activity for the three-month periods ended March 31, 2019 and 2018:

	March 31,			March 31,
	2019			2018
		Weighted-			Weighted-
		Average			Average
	Number of	Grant Date		Number of	Grant Date
	RSUs	Fair Value		RSUs	Fair Value
Unvested RSUs at beginning of period	2,260	$	70.00	3,578	$	70.00
Granted	—		—	—		—
Forfeited	(565)		70.00	(189)		70.00
Vested	—		—	—		—
Unvested RSUs at end of period	1,695	$	70.00	3,389	$	70.00