Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Tables)

v2.4.1.9
Stock-Based Compensation (Tables)
 3 Months Ended
Mar. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Summary of Stock Option Activity
A summary of the Company’s stock option activity for the three months ended March 31, 2015 was as follows:
 
Options
 
Weighted-Average
Exercise Price
Outstanding at December 31, 2014
1,383,479

 
$
5.13

Granted
1,485,759

 
$
0.95

Exercised
—

 
—

Forfeited
(889,822
)
 
$
3.06

Expired
(151,358
)
 
$
3.06

Outstanding at March 31, 2015
1,828,058

 
$
2.92

Exercisable at March 31, 2015
663,504

 
$
6.21

Vested and expected to vest at March 31, 2015
1,765,941

 
$
2.98

Schedule of Black-Scholes-Merton Option Pricing Model
The following assumptions were used in the Black-Scholes valuation model related to non-employee stock options granted during the three months ended March 31, 2014:
Weighted-average risk-free interest rate
2.78
%
Weighted-average expected life (in years)
10.0

Expected dividend yield
—
%
Weighted-average expected volatility
45
%
Summary of Restricted Stock Unit Activity
Restricted stock awards (“RSA”) activity for the three months ended March 31, 2015 was as follows:
 
Number of Awards
 
Weighted-Average
Grant Date
Fair Value
Unvested at December 31, 2014
—

 
$
—

Granted
30,000

 
$
0.75

Vested
(30,000
)
 
$
0.75

Forfeited
—

 
$
—

Unvested at March 31, 2015
—

 
$
—

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation expense included in the condensed consolidated statements of operations and comprehensive loss was allocated as follows (in thousands):
 
Three months ended March 31,
2015
 
2014
Cost of revenue
$
29

 
$
2

Research and development
122

 
87

General and administrative
328

 
852

Selling and marketing
142

 
420

Capitalized into inventory
39

 
43

Total stock-based compensation expense
$
660

 
$
1,404

Schedule of Unrecognized Compensation Cost, Nonvested Awards
Unrecognized stock-based compensation at March 31, 2015 was as follows (in thousands):
 
Unrecognized Stock-Based Compensation
 
Weighted Average Remaining Period of Recognition (in years)
Stock options
$
792

 
2.4
Employee Stock Option  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Schedule of Black-Scholes-Merton Option Pricing Model
The following weighted average assumptions were used in the calculation to estimate the fair value of options granted to employees three months ended March 31, 2015 and 2014:
 
Three months ended March 31,
2015
 
2014
Weighted-average risk-free interest rate
1.62
%
 
1.84
%
Weighted-average expected life (in years)
6.3

 
6.3

Expected dividend yield
—
%
 
—
%
Weighted-average expected volatility
46
%
 
48
%