Equity Compensation
9 Months Ended
Sep. 30, 2016
Equity Compensation  
Equity Compensation

 

8. Equity Compensation

 

Stock Options

 

In 2003, the Board of Directors adopted the 2003 Equity Incentive Plan (the “2003 Plan”), which provided for the granting of nonqualified and incentive stock options, stock appreciation rights, stock awards, restricted stock units and restricted stock awards. Under the 2003 Plan, the Company was able to grant nonqualified and incentive stock options to directors, employees and non-employees providing services to the Company. On June 11, 2013, the Company’s Board of Directors adopted the 2013 Stock Option and Incentive Plan (the “2013 Plan”), which was subsequently approved by the Company’s stockholders. The 2013 Plan became effective as of the closing of the Company’s initial public offering. To the extent that any awards outstanding under the 2003 Plan are forfeited or lapse unexercised after August 1, 2013, the shares of common stock subject to such awards will become available for issuance under the 2013 Plan. The 2013 Plan provides for annual increases in the number of reserved shares of 5% of the outstanding number of shares of the Company’s Common Stock as of the preceding December 31. The Company and its Board of Directors decided to forego increasing the number of reserved shares on January 1, 2016, and will revisit this option for an annual increase next year.

 

A summary of stock option activity for the nine months ended September 30, 2016 is presented below:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

    

 

    

 

 

    

 

 

    

Weighted

 

 

 

 

 

Weighted

 

 

 

 

Average

 

 

 

Shares Subject

 

Average

 

Weighted

 

Remaining

 

 

 

to Options

 

Grant Date

 

Average

 

Contractual

 

 

    

Outstanding

    

Fair Value

    

Exercise Price

    

Life (Years)

  

Balance at December 31, 2015

 

4,572,672

 

 

 

 

$

10.72

 

 

 

Granted

 

50,000

 

 

4.63

 

 

8.16

 

 

 

Exercised

 

(619,757)

 

 

 

 

 

4.87

 

 

 

Expired

 

(69,832)

 

 

 

 

 

14.79

 

 

 

Forfeited

 

(51,588)

 

 

 

 

 

15.68

 

 

 

Balance at September 30, 2016

 

3,881,495

 

 

 

 

 

11.48

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Exercisable options at September 30, 2016

 

2,990,429

 

 

 

 

 

10.41

 

5.6

 

Vested and expected to vest at September 30, 2016

 

3,822,911

 

 

 

 

 

11.44

 

6.1

 

 

The following table summarizes information about stock options outstanding and exercisable at September 30, 2016:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Options Outstanding

 

Options Exercisable

 

 

 

 

 

    

 

 

    

 

    

Weighted-

    

 

    

Weighted-

 

 

 

 

 

 

Weighted

 

 

 

Average

 

 

 

Average

 

 

 

 

 

 

Average

 

Number of

 

Remaining

 

Number of

 

Remaining

 

 

 

 

 

 

Exercise

 

Underlying

 

Contractual

 

Underlying

 

Contractual

 

Range of Exercise Prices

    

Price

    

Shares

    

Life (in years)

    

Shares

    

Life (in years)

  

$

2.34

-

3.59

 

 

3.25

 

60,694

 

0.8

 

60,694

 

0.8

 

$

4.78

-

7.28

 

 

5.94

 

1,246,543

 

4.6

 

1,225,444

 

4.5

 

$

7.49

-

11.28

 

 

9.77

 

1,044,374

 

5.9

 

838,969

 

5.4

 

$

11.72

-

17.66

 

 

14.75

 

863,004

 

8.1

 

427,361

 

8.0

 

$

19.56

-

22.92

 

 

21.04

 

666,880

 

7.2

 

437,961

 

7.1

 

 

 

 

 

 

 

 

 

3,881,495

 

 

 

2,990,429

 

 

 

 

For the stock option awards vested during the three and nine months ended September 30, 2016, the total fair value was $1.3 million and $4.2 million, respectively. The following table summarizes the aggregate intrinsic-value of options exercised, exercisable and vested and expected to vest (in thousands):

 

 

 

 

 

 

 

 

 

 

 

 

For the Nine Months Ended

 

 

 

and as of September 30,

 

 

    

2016

    

2015

 

Options Exercised

 

$

2,978

 

$

1,327

 

Options Exercisable

 

 

10,491

 

 

5,333

 

Options Vested and Expected to Vest

 

 

11,065

 

 

5,389

 

The fair value of each option award was estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Three Months Ended

 

Nine Months Ended

 

 

 

September 30,

 

September 30,

 

 

    

2016

    

 

2015

    

 

2016

    

 

2015

 

 

Expected volatility

 

 

 

 

 

 

 

53

%  

 

 

 

62

%  

 

53

-

55

%  

 

Expected dividends

 

 

 

 

 

 

 

0

%  

 

 

 

0

%  

 

 

 

0

%  

 

Expected terms (in years)

 

 

 

 

 

5.3

-

6.1

 

 

 

 

6.1

 

 

5.3

-

6.1

 

 

Risk-free rate

 

 

 

 

 

1.5

-

1.8

%  

 

 

 

1.1

%  

 

1.3

-

1.8

%  

 

 

No stock options were granted during the three months ended September 30, 2016.

 

Restricted stock units

 

A summary of restricted stock unit activity for the nine months ended September 30, 2016 is presented below:

 

 

 

 

 

 

 

 

 

Number of

 

Weighted Average

 

 

    

Shares

    

Grant Date Fair Value

 

Non-vested balance at December 31, 2015

 

425,000

 

$

8.18

 

Awarded

 

1,139,846

 

 

7.37

 

Vested

 

(17,670)

 

 

7.85

 

Forfeited

 

(89,719)

 

 

7.84

 

Non-vested balance at September 30, 2016

 

1,457,457

 

 

7.57

 

 

During the nine months ended September 30, 2016, 17,670 restricted stock units vested of which 6,949 shares were withheld for tax purposes resulting in the issuance of 10,721 shares of common stock.

 

Stock-based compensation expense

 

Total stock-based compensation expense has been classified as follows in the accompanying Condensed Consolidated Statements of Operations (in thousands):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Three Months Ended

 

Nine Months Ended

 

 

 

September 30,

 

September 30,

 

 

    

2016

    

2015

    

2016

    

2015

 

Cost of revenue

 

$

38

 

$

40

 

$

128

 

$

126

 

Research and development

 

 

789

 

 

706

 

 

2,493

 

 

2,145

 

Sales and marketing

 

 

496

 

 

457

 

 

1,605

 

 

1,298

 

General and administrative

 

 

660

 

 

605

 

 

1,707

 

 

1,767

 

Total stock-based compensation expense

 

$

1,983

 

$

1,808

 

$

5,933

 

$

5,336

 

 

 

At September 30, 2016, there was $7.8 million of total unrecognized compensation cost related to non-vested stock option awards that will be recognized over a weighted-average period of 1.9 years. At September 30, 2016, there was $8.5 million of total unrecognized compensation cost related to non-vested restricted stock units that will be recognized over a weighted-average period of 2.4 years.