Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity and Share-Based Compensation

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Stockholders' Equity and Share-Based Compensation
9 Months Ended
Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stockholders' Equity and Share-Based Compensation
Stockholders’ Equity and Share-Based Compensation
Options and Restricted Stock Units
The Company had the following common stock option activity during the thirty-nine weeks ended September 30, 2017:
Granted options to purchase 1,445 common shares.
Exercise of 1,074 options to purchase common shares.
Forfeiture of 161 option to purchase common shares.
Expiration of 361 options to purchase common shares.

The following table summarizes the Company’s restricted stock unit ("RSU") activity for the thirty-nine weeks ended September 30, 2017, and details regarding the awards outstanding and exercisable at September 30, 2017 (in thousands):
 
Shares
 
Weighted
Average
Exercise Price
 
Weighted Average
Remaining
Contractual
Term (in years)
 
Aggregate
Intrinsic Value
Awards outstanding, December 31, 2016
937

 
$

 
 
 
 
Awarded
1,649

 
$

 
 
 
 
Vested
(592
)
 
$

 
 
 
 
Forfeited
(903
)
 
$

 
 
 
 
Awards outstanding, September 30, 2017
1,091

 
$

 
0.85
 
$
3,153

Vested and expected to vest at September 30, 2017
1,091

 
$

 
0.85
 
$
3,153

During the thirty-nine weeks ended September 30, 2017, 67 RSU's that vested were time-based and 525 were performance-based. For the RSUs awarded, the number of shares issued on the date of vest is net of the minimum statutory withholding requirements that we pay in cash to the appropriate taxing authorities on behalf of our employees. For those employees who elect not to receive shares net of the minimum statutory withholding requirements, the appropriate taxes are paid directly by the employee. During the thirty-nine weeks ended September 30, 2017, we withheld 220 shares to satisfy $743 of employees' tax obligations. Although shares withheld are not issued, they are treated as a common stock repurchase in our consolidated financial statements, as they reduce the number of shares that would have been issued upon vesting.

For the thirteen and thirty-nine weeks ended September 30, 2017, we recorded compensation expense of $574 and $2,242, respectively. As of September 30, 2017, there was unrecognized compensation expense of $4,844.

Non-Controlling Interest

Non-controlling interests represent equity interests in consolidated subsidiaries that are not attributable, either directly or
indirectly, to the Company (i.e., minority interests). The Company's non-controlling interests consisted of the minority equity holders' proportionate share of the equity of AutoMD. However, during March, 2017 AutoMD filed for dissolution, therefore the Company no longer has any non-controlling interests.
As of December 31, 2016 there were 1,405 stock options outstanding under the AutoMD 2014 Equity Incentive Plan (the "AMD Plan"). On March 6, 2017, the AMD Plan was terminated upon the dissolution of AutoMD, and all outstanding options were canceled.