STOCK-BASED COMPENSATION

3 Months Ended

Mar. 31, 2020

Share-based Payment Arrangement [Abstract]

Stock Incentive Plans

We have one long-term equity incentive plan which we refer to as the 2006 Equity Incentive Plan, which we first amended and restated as of April 20, 2015 and again on March 9, 2017 (the "Restated Plan”). The Restated Plan was approved by our

stockholders at our annual stockholders meeting on June 8, 2017. We have reserved for issuance under the Restated Plan 14,000,000 shares of common stock. We can issue options (incentive and non-qualified), stock awards, stock appreciation rights, stock units and cash awards under the Restated Plan.

Options

Certain options granted under the Restated Plan to employees are intended to qualify as incentive stock options under existing tax regulations. Stock options generally vest over 3 to 5 years and expire 5 to 10 years from the date of grant.

As of March 31, 2020, we had outstanding options to acquire 527,899 shares of our common stock, of which options to acquire 298,863 shares were exercisable. The following summarizes all of our option transactions for the three months ended March 31, 2020:



Outstanding Options Under the 2006 Plan	Shares	Weighted Average Exercise price Per Common Share		Weighted Average Remaining Contractual Life (in years)	Aggregate Intrinsic Value
Balance, December 31, 2019	478,951	$	8.21
Granted	48,948	20.43
Balance, March 31, 2020	527,899	9.34		7.00	$	1,170,297
Exercisable at March 31, 2020	298,863	7.48		6.24	940,098

Aggregate intrinsic value in the table above represents the total pretax intrinsic value (the difference between our closing stock price on March 31, 2020 and the exercise price, multiplied by the number of in-the-money options as applicable) that would have been received by the holder had all holders exercised their options on March 31, 2020. No options were exercised during the three months ended March 31, 2020. As of March 31, 2020, total unrecognized stock-based compensation expense related to non-vested employee awards was $1.0 million which is expected to be recognized over a weighted average period of approximately 2.05 years.

Restricted Stock Awards

The Restated Plan permits the award of restricted stock awards (“RSA’s”). As of March 31, 2020, we have issued a total of 6,497,244 RSA’s of which 314,962 were unvested at March 31, 2020. The following summarizes all unvested RSA’s activities during the three months ended March 31, 2020:



	RSA's		Weighted-Average Remaining Contractual Term (Years)	Weighted-Average Fair Value
RSA's unvested at December 31, 2019	387,934			$	11.61
Changes during the period
Granted	378,968			$	21.30
Vested	(451,940	)		$	15.86
RSA's unvested at March 31, 2020	314,962		1.34	$	16.00

We determine the fair value of all RSA’s based on the closing price of our common stock on the award date.

Other stock bonus awards

The Restated Plan also permits the award of stock bonuses not subject to any future service period. These awards are valued and expensed based on the closing price of our common stock on the date of award. During the three months ended March 31, 2020 awards totaling 1,078 shares were granted.

Plan summary

In summary, of the 14,000,000 shares of common stock reserved for issuance under the Restated Plan, at March 31, 2020, we had issued 15,304,688 total shares between options, RSA’s and other stock awards. With options canceled and RSA’s forfeited

amounting to 3,281,040 and 61,703 shares, respectively, there remain 2,038,055 shares available under the Restated Plan for future issuance.